CN101537831A - Control method of automobile electric control parking and start assisting by manual transmission and system thereof - Google Patents
Control method of automobile electric control parking and start assisting by manual transmission and system thereof Download PDFInfo
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- CN101537831A CN101537831A CN200910097642A CN200910097642A CN101537831A CN 101537831 A CN101537831 A CN 101537831A CN 200910097642 A CN200910097642 A CN 200910097642A CN 200910097642 A CN200910097642 A CN 200910097642A CN 101537831 A CN101537831 A CN 101537831A
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Abstract
The invention discloses a control method of automobile electric control parking and start assisting by manual transmission, and a system thereof. The control method comprises the following steps of: collecting signals by a signal collecting unit, receiving signals by an electronic control unit, carrying out analysis, judgment and decision-making, and driving a left-rear wheel direct current motor, a right-rear wheel direct current motor and three two-position two-way normally-opened electromagnetic valves to work. The system comprises the signal collecting unit, the electronic control unit, a hydraulic control unit and a parking implementing unit; the signal collecting unit comprises a sensor which can reflect the operating intention of the driver and real-time state of the automobile and a switch; the hydraulic control unit comprises three two-position two-way normally-opened electromagnetic valves and three one-way valves; and the parking implementing unit comprises a left-rear wheel electronic parking brake and a right-rear wheel electronic parking brake. The control method and the system thereof can realize the functions of electric control parking, start assisting, emergent braking and the like.
Description
Technical field
The present invention relates to a kind of hand gear automobile electric control parking and start assisting control method and system thereof.
Background technology
At present, the Parking of most hand gear automobiles is to draw brake-applying handle to make the rear axle Parking Brake produce lock torque by chaufeur, thereby cause what realized trailing wheel generation braking force on the road surface, under this Parking mode, need operate the clutch simultaneously pedal, Das Gaspedal and brake-applying handle of chaufeur just can make automobile start to walk on the ramp; When only needing the short time Parking, wait for traffic lamp for example, a lot of chaufeurs often do not draw brake-applying handle, but slam pedal of clutch and brake pedal simultaneously, under this Parking mode, need operate the clutch simultaneously pedal, Das Gaspedal and brake pedal of chaufeur just can make automobile start to walk on the ramp.
Adopt the manual automobile of these two kinds of Parkings and starting mode to have big defective, (1) braking during standstill power can vary with each individual, there is very big potential safety hazard undoubtedly in this automobile for Parking on the ramp, (2) to take cab space bigger for brake-applying handle, the layout that is unfavorable for other devices, (3) automobile is when the more travels down of traffic signal lamp, start-stop often, this just requires the chaufeur pedal that operates the clutch continually, Das Gaspedal, brake-applying handle or brake pedal, labour intensity is big, when (4) starting to walk, rely on driver's experiences release opportunity of braking during standstill fully, especially in the abrupt slope operating mode, do not have the chaufeur of rich experiences often to be difficult to gentle start, it is sloping or flame-out to cause that very easily automobile slips.
For solving the problems of the technologies described above, Germany Lucas Automotive Gmbh successively discloses " being used to operate the method for Vehicular brake device " (application number is 200580003615.9), " car brake, caliper brake particularly " (application number is 200680035641.4), my company discloses " a kind of vehicle electronic brake system actuator " (application number is 200710156334.8), " a kind of ECU (Electrical Control Unit) of electronic parking braking system of vehicle " (application number is 200810121737.3), but the technical scheme that everybody proposes has all for the hand gear automobile that a precondition---the target vehicle must dispose the ESP device, otherwise can't realize the start assisting function.Reality is that Chinese automobile market only has 7% vehicle that the ESP device has been installed, add that the ESP core technology is still monopolized by external auto parts and components manufacturer at present, even being housed, the hand gear automobile of ESP device used the disclosed technique scheme of my company, because the ECU (Electrical Control Unit) of control executing mechanism can't be carried out efficient communication with the ESP device, electric control parking and start assisting function can't realize simultaneously, therefore according to existing technical scheme, most of hand gear user vehicles can't be used the device that can overcome above-mentioned technological deficiency fully in a short time.
Summary of the invention
The objective of the invention is provides a kind of electric control parking and start assisting control method and system thereof for the hand gear automobile, make the hand gear automobile that does not dispose the ESP device also can realize electric control parking and start assisting function simultaneously, thereby effectively improve the control comfort and the drive safety of chaufeur.
For achieving the above object, the technical solution used in the present invention is:
A kind of hand gear automobile electric control parking and start assisting control method, by clutch position sensor, brake-pressure sensor, throttle position switch, Slope Transducer, car speed sensor, engine speed sensor, ignition lock, one P PARK Position P switch, after the signal that the signal gathering unit that start assisting switch and braking during standstill switch are formed is gathered is received by the data reception module in the electronic control unit, enter the data processing module in the electronic control unit, data processing module is analyzed the data that the transmission of data receiver module comes, after judgement and the decision-making, send control command, one tunnel instruction enters the DC machine driver module in the electronic control unit, make it drive left rear wheel electronic brake device that the left rear wheel DC machine is housed and the off hind wheel electronic brake device work that the off hind wheel DC machine is housed respectively, another road instruction enters the solenoid-driven module in the electronic control unit, make it drive first respectively, second, the 3rd 2/2-way normally open solenoid valve work, by control left rear wheel DC machine, the off hind wheel DC machine, first, second, the energising opportunity of the 3rd 2/2-way normally open solenoid valve and outage realize electric control parking opportunity, start assisting, the emergency brake function, wherein the electric control parking function comprises hydraulic pressure Parking subfunction at least, armstrong's patent Parking subfunction, automation Parking subfunction;
Specifically, whether described electronic control unit is opened according to described start assisting switch and is judged that automobile is in hydraulic pressure Parking pattern or is in mechanical Parking pattern;
Under described hydraulic pressure Parking pattern, when automobile does not carry out hydraulic parking braking, described electronic control unit is controlled closing opportunity of described three 2/2-way normally open solenoid valves according to the signal of described car speed sensor, ignition lock, clutch position sensor, brake-pressure sensor, Slope Transducer collection, thereby realizes first subfunction---the hydraulic pressure parking function in the electric control parking function;
Under described mechanical Parking pattern, when automobile does not carry out mechanical braking during standstill, described electronic control unit is according to described car speed sensor, ignition lock, the braking during standstill switch, brake-pressure sensor, the current feedback signal of the signal of Slope Transducer collection and described left rear wheel DC machine and off hind wheel DC machine is controlled the just commentaries on classics opportunity of described left rear wheel DC machine and off hind wheel DC machine and is stopped opportunity, thereby mechanical braking during standstill is implemented, when automobile carries out mechanical braking during standstill, described electronic control unit is according to described ignition lock, the braking during standstill switch, brake-pressure sensor, the current feedback signal of the signal of Slope Transducer collection and described left rear wheel DC machine and off hind wheel DC machine is controlled the counter-rotating opportunity of described left rear wheel DC machine and off hind wheel DC machine and is stopped opportunity, thereby mechanical braking during standstill is removed, so just realized second subfunction---the armstrong's patent parking function in the electric control parking function;
The realization of described automation parking function has three kinds of situations at least; To be described electronic control unit control the just commentaries on classics opportunity and the opportunity of stopping of left rear wheel DC machine and off hind wheel DC machine according to the current feedback signal of the signal of described car speed sensor, throttle position switch, brake-pressure sensor, Slope Transducer collection and described left rear wheel DC machine and off hind wheel DC machine for first kind of situation; Second kind of situation is that automobile has carried out hydraulic parking braking, described electronic control unit is at first controlled the just commentaries on classics opportunity and the opportunity of stopping of described left rear wheel DC machine and off hind wheel DC machine according to the current feedback signal of the signal of hydraulic parking braking time, described braking during standstill switch, brake-pressure sensor, Slope Transducer collection and described left rear wheel DC machine and off hind wheel DC machine, drive second, the 3rd 2/2-way normally open solenoid valve dead electricity and opening simultaneously then; The third situation is that automobile does not carry out braking during standstill, and described electronic control unit is controlled the just commentaries on classics opportunity and the opportunity of stopping of described left rear wheel DC machine and off hind wheel DC machine according to the current feedback signal of the signal of described car speed sensor, ignition lock, brake-pressure sensor, Slope Transducer collection and described left rear wheel DC machine and off hind wheel DC machine;
Described start assisting function must be worked as automobile and carry out could realizing behind the hydraulic parking braking, specifically, described electronic control unit is controlled the dutycycle of first 2/2-way normally open solenoid valve and opening opportunity of second, the 3rd 2/2-way normally open solenoid valve according to the signal of a described P PARK Position P switch, braking during standstill switch, engine speed sensor, throttle position switch, Slope Transducer collection, thereby realizes the start assisting function;
Described electronic control unit is also controlled the just commentaries on classics opportunity and the opportunity of stopping of described left rear wheel DC machine and off hind wheel DC machine according to the signal of described car speed sensor, throttle position switch, the collection of braking during standstill switch and the current feedback signal of described left rear wheel DC machine and off hind wheel DC machine, thereby emergency brake is implemented;
A kind of system that is used to implement described hand gear automobile electric control parking and start assisting control method comprises signal gathering unit, electronic control unit, hydraulic control unit and Parking performance element; Wherein:
(1) signal gathering unit: comprise clutch position sensor, brake-pressure sensor, throttle position switch, Slope Transducer, car speed sensor, engine speed sensor, ignition lock, a P PARK Position P switch, start assisting switch and braking during standstill switch, the mouth of described each sensor and each switch links to each other with the electronic control unit corresponding input end respectively;
(2) electronic control unit: comprise the data reception module that each input end links to each other with the corresponding mouth of each switch with each sensor of described signal gathering unit respectively, the data processing module that input end links to each other with the data reception module mouth, DC machine driver module and the solenoid-driven module that input end links to each other with the corresponding mouth of data processing module respectively;
(3) hydraulic control unit: comprise clutch hydraulic pressure control module and drg hydraulic control module; The clutch hydraulic pressure control module comprises and is connected on first 2/2-way normally open solenoid valve on the hydraulic tubing between clutch mass cylinder and the clutch operating cylinder and first check valve in parallel with it, the feeder ear of first 2/2-way normally open solenoid valve links to each other with the corresponding mouth of solenoid-driven module, first check valve oppositely ends in clutch mass cylinder conducting to the clutch operating cylinder direction; The drg hydraulic control module comprise on the two-way brake piping that is connected on the master brake cylinder mouth respectively second, the 3rd 2/2-way normally open solenoid valve and respectively with second, the 3rd second, the 3rd check valve that the 2/2-way normally open solenoid valve is in parallel, the feeder ear of second, the 3rd 2/2-way normally open solenoid valve links to each other with the corresponding mouth of solenoid-driven module respectively, second, the 3rd check valve oppositely ends in master brake cylinder conducting to the drg direction;
(4) Parking performance element: comprise left rear wheel electronic brake device and off hind wheel electronic brake device, both inside are equipped with left rear wheel DC machine and off hind wheel DC machine respectively, and the feeder ear of described left rear wheel DC machine and off hind wheel DC machine links to each other with the corresponding mouth of described DC machine driver module respectively.
The beneficial effect that the present invention has is:
(1) eliminates the braking force difference that causes by the strength difference of chaufeur, guaranteed the safety of Parking in the gradient scope of automobile design requirement;
(2) steering unit replaces with the braking during standstill switch by the braking during standstill pull bar, has both saved cab space, has reduced the labour intensity of chaufeur again;
(3) as long as open the start assisting switch, the short time braking during standstill just can continue to have stepped on pedal of clutch and brake pedal, need only put in first gear during starting, stepping on the throttle pedal just can gentle start, this greatly reduces the labour intensity of chaufeur, embodies particularly evidently on the more road of traffic signal lamp;
(4) the start assisting function has been eliminated the driver's experiences difference, has guaranteed the safety that the hand gear automobile (is started to walk as the abrupt slope) under some special operation condition;
(5) combine the safe and reliable advantage of hydraulic pressure parking device rapid, the mechanical parking device of response, the short time braking during standstill is realized by the hydraulic pressure parking device, guaranteed the rapidity of Parking, long-time braking during standstill is realized by mechanical parking device, has guaranteed the reliability of Parking.
In a word, the present invention has remedied many deficiencies of prior art scheme, has widened electric control parking and the field of application of start assisting function in the hand gear automobile, for the user provides safety and comfortable driving environment more.The present invention is particularly useful for not disposing the hand gear automobile of ESP (Electronic Stability Program, electronic stability program) device.
Description of drawings
Fig. 1 is a kind of hand gear automobile electric control parking that the present invention relates to and the transmission block diagram of start assisting system.
Fig. 2 is the connection diagram of hydraulic control unit, Parking performance element and the peripheral parts of a kind of hand gear automobile electric control parking that the present invention relates to and start assisting system.
When graph of a relation between accelerator open degree when Fig. 3 is vehicle starting and the engine torque reduced value and vehicle starting park the gradient and vehicle starting the time graph of a relation between the resisting moment that need overcome.
Clutch engagement amount when Fig. 4 is vehicle starting and be delivered to graph of a relation between the moment of torsion on the wheel.
Among the figure: 100, signal gathering unit, 105, clutch position sensor, 110, brake-pressure sensor, 115, throttle position switch, 120, Slope Transducer, 125, car speed sensor, 130, engine speed sensor, 135, ignition lock, 140, one P PARK Position P switch, 145, the start assisting switch, 150, the braking during standstill switch, 200, electronic control unit, 210, data reception module, 220, data processing module, 230, the DC machine driver module, 240, the solenoid-driven module, 300, hydraulic control unit, 310, the clutch hydraulic pressure control module, 320, the drg hydraulic control module, 311, the 2/2-way normally open solenoid valve, 312, check valve, 321, check valve, 322, the 2/2-way normally open solenoid valve, 323, the 2/2-way normally open solenoid valve, 324, check valve, 400, the Parking performance element, 410, left rear wheel electronic brake device, 420, off hind wheel electronic brake device, 510, pedal of clutch, 520, clutch mass cylinder, 530, clutch operating cylinder, 610, brake pedal, 620, vacuum booster, 630, master brake cylinder, 640, the ABS hydraulic control unit, 650, the near front wheel drg, 660, the off front wheel drg.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, a kind of hand gear automobile electric control parking and the start assisting system that the present invention relates to comprise signal gathering unit 100, electronic control unit 200, hydraulic control unit 300 and Parking performance element 400, wherein:
(1) signal gathering unit 100, comprise clutch position sensor 105, brake-pressure sensor 110, throttle position switch 115, Slope Transducer 120, car speed sensor 125, engine speed sensor 130, ignition lock 135, a P PARK Position P switch 140, start assisting switch 145 and braking during standstill switch 150, the mouth of described each sensor and each switch links to each other with the corresponding input end of electronic control unit 200 respectively;
(2) electronic control unit 200, comprise the data reception module 210 that each input end and signal gathering unit 100 each sensor link to each other with the corresponding mouth of each switch, the data processing module 220 that input end links to each other with data reception module 210 mouths, DC machine driver module 230 and the solenoid-driven module 240 that input end links to each other with data processing module 220 corresponding mouths respectively;
(3) hydraulic control unit 300, comprise clutch hydraulic pressure control module 310 and drg hydraulic control module 320; Clutch hydraulic pressure control module 310 comprises and is connected on the 2/2-way normally open solenoid valve 311 that can switch on continuously on the hydraulic tubing between clutch mass cylinder 520 and the clutch operating cylinder 530 and check valve 312 in parallel with it, the feeder ear of 2/2-way normally open solenoid valve 311 links to each other with the corresponding mouth of solenoid-driven module 240, check valve 312 oppositely ends in clutch mass cylinder 520 conducting to clutch operating cylinder 530 directions; Drg hydraulic control module 320 comprises and is connected between master brake cylinder 630 and the ABS hydraulic control unit 640 on the two-way brake piping respectively and the 2/2-way normally open solenoid valve 322 and 323 that can switch on continuously, the check valve 321 and 324 in parallel with 2/2-way normally open solenoid valve 322 and 323 respectively, 2/2-way normally open solenoid valve 322 links to each other with the corresponding mouth of solenoid-driven module 240 respectively with 323 feeder ear, check valve 321 and 324 conductings on master brake cylinder 630 to ABS hydraulic control units 640 directions oppositely end;
(4) the Parking performance element 400, comprise left rear wheel electronic brake device 410 and off hind wheel electronic brake device 420, both inside are equipped with left rear wheel DC machine 411 and off hind wheel DC machine 421 respectively, and the feeder ear of left rear wheel DC machine 411 and off hind wheel DC machine 421 links to each other with the corresponding mouth of DC machine driver module 230 respectively;
By clutch position sensor 105, brake-pressure sensor 110, throttle position switch 115, Slope Transducer 120, car speed sensor 125, engine speed sensor 130, ignition lock 135, one P PARK Position P switch 140, after the signal that the signal gathering unit 100 that start assisting switch 145 and braking during standstill switch 150 are formed is gathered is received by the data reception module in the electronic control unit 200 210, enter the data processing module 220 in the electronic control unit 200,220 pairs of data receiver modules of data processing module 210 transmit the data of coming and analyze, after judgement and the decision-making, send control command, one tunnel instruction enters the DC machine driver module 230 in the electronic control unit 200, make it drive left rear wheel electronic brake device 410 work that left rear wheel DC machine 411 is housed and off hind wheel electronic brake device 420 work that off hind wheel DC machine 421 is housed respectively, another road instruction enters the solenoid-driven module 240 in the electronic control unit 200, make it drive 2/2-way normally open solenoid valve 311 respectively, 322,323 work, thereby reach the purpose of control clutch hydraulic line pressure and drg hydraulic line pressure.
As shown in Figure 3, the accelerator open degree when abscissa α is vehicle starting, corresponding ordinate T
tBeing engine torque increases value after kinking is calculated through change-speed box and main reduction gear reduction of speed, automobile when the starting stage, engine speed in a certain narrow interval, α and T
tCan be simplified to linear relationship; When being vehicle starting, abscissa i parks the gradient, corresponding ordinate T
zThe resisting moment that need overcome when being vehicle starting, the real road gradient is generally less, so i and T
zAlso can be simplified to linear relationship, T
F1And T
I1Be respectively that automobile is i in the gradient
1The ramp on the rolling resistance moment and the grade resistance square in when starting.
As shown in Figure 4, the engagement amount of power-transfer clutch when abscissa L is vehicle starting, ordinate T
cBe that driving engine is delivered to the moment of torsion on the wheel, T after the conversion of clutch engagement amount
C1The engagement amount that is power-transfer clutch is L
1The time, driving engine is delivered to the moment of torsion on the wheel.
Principle of work of the present invention is as follows:
Use hand gear automobile of the present invention and can realize functions such as electric control parking, start assisting, emergency brake, electric control parking function wherein comprises subfunctions such as hydraulic pressure Parking, armstrong's patent Parking, automation Parking, is introduced one by one below;
When start assisting switch 145 is opened, automobile enters hydraulic pressure Parking pattern, if this moment, automobile did not carry out hydraulic parking braking, work as car speed sensor 125 detected values so less than a certain threshold value, ignition lock 135 is opened, clutch position sensor 105 detects power-transfer clutch to be separated fully, the braking during standstill power sum of cooresponding four wheels of brake-pressure sensor 110 detected values is during greater than the product of cooresponding braking during standstill power of Slope Transducer 120 detected values and safety factor β, electronic control unit 200 sends control command, drive 2/2-way normally open solenoid valve 311,322 and 323 simultaneously electric and close, this moment, chaufeur can release the clutch pedal 510 and brake pedal 610, pedal of clutch 510 is by the elastic element self-return that carries, brake pedal 610 is by elastic element that carries and vacuum booster 620 in-to-in elastic element self-returns, this moment, the clutch operating cylinder 530 inner pressure that keep can be kept the separation of power-transfer clutch short time fully, four car side brakes 650,660,410, the 420 inner pressure that keep can be kept the Parking of automobile short time fully, be automobile in setting-up time, can not stop working or slip the slope, so just realized first subfunction in the electric control parking function---hydraulic pressure parking function, typical condition are the more urban highways of traffic signal lamp;
When start assisting switch 145 cuts out, automobile enters mechanical Parking pattern, when automobile does not carry out mechanical braking during standstill, car speed sensor 125 detected values are less than a certain threshold value, ignition lock 135 is opened, braking during standstill switch 150 detects chaufeur the intention of implementing braking during standstill, the braking during standstill power sum of cooresponding four wheels of brake-pressure sensor 110 detected values is during greater than the product of cooresponding braking during standstill power of Slope Transducer 120 detected values and safety factor β, electronic control unit 200 sends control command, driving DC machine 411 and 421 just changes simultaneously, be not less than until the braking during standstill power sum that electronic control unit 200 detects the cooresponding braking during standstill power of working current of DC machine 411 and 421 and cooresponding two trailing wheels of brake-pressure sensor 110 detected values behind the product of cooresponding braking during standstill power of Slope Transducer 120 detected values and safety factor β and quit work, this moment, chaufeur can discharge the hydraulic braking force that applies, braking during standstill power is born by the slip screw transmission device that electronic brake device 410 and 420 in-to-ins have an auto-lock function fully, when automobile has carried out mechanical braking during standstill, ignition lock 135 is opened, braking during standstill switch 150 detects chaufeur the intention of removing braking during standstill, the braking during standstill power sum of cooresponding four wheels of brake-pressure sensor 110 detected values is during greater than the product of cooresponding braking during standstill power of Slope Transducer 120 detected values and safety factor β, electronic control unit 200 sends control command, driving DC machine 411 and 421 reverses simultaneously, until electronic control unit 200 detect the working current of DC machine 411 and 421 cooresponding drag moment all less than the master gauge definite value after and quit work, so just realized second subfunction---the armstrong's patent parking function in the electric control parking function;
The 3rd subfunction in the electric control parking function---the realization of automation parking function has three kinds of situations at least, first kind of situation be when car speed sensor 125 detected values greater than a certain threshold value and the trend that increases is gradually arranged, when throttle position switch 115 detects chaufeur and does not quicken to be intended to, electronic control unit 200 sends control command, driving DC machine 411 and 421 just changes simultaneously, be not less than until the braking during standstill power sum that electronic control unit 200 detects the cooresponding braking during standstill power of working current of DC machine 411 and 421 and cooresponding two trailing wheels of brake-pressure sensor 110 detected values behind the product of cooresponding braking during standstill power of Slope Transducer 120 detected values and safety factor β and quit work, typical condition is that automobile slips the slope on the ramp; Second kind of situation is to surpass setting-up time when the automobile hydraulic braking during standstill, braking during standstill switch 150 detects chaufeur when not implementing the intention of braking during standstill, electronic control unit 200 sends control command, at first driving DC machine 411 and 421 just changes simultaneously, be not less than until the braking during standstill power sum that electronic control unit 200 detects the cooresponding braking during standstill power of working current of DC machine 411 and 421 and cooresponding two trailing wheels of brake-pressure sensor 110 detected values behind the product of cooresponding braking during standstill power of Slope Transducer 120 detected values and safety factor β and quit work, drive 2/2-way normally open solenoid valve 322 and 323 dead electricity and opening simultaneously then, the braking during standstill power of this moment is born by the slip screw transmission device that electronic brake device 410 and 420 in-to-ins have an auto-lock function fully, and typical condition is that the automobile hydraulic Parking surpasses certain hour; The third situation is not carry out braking during standstill when automobile, car speed sensor 125 detected values are less than a certain threshold value, when ignition lock 135 is closed, electronic control unit 200 will send control command, driving DC machine 411 and 421 just changes simultaneously, be not less than until the braking during standstill power sum that electronic control unit 200 detects the cooresponding braking during standstill power of working current of DC machine 411 and 421 and cooresponding two trailing wheels of brake-pressure sensor 110 detected values behind the product of cooresponding braking during standstill power of Slope Transducer 120 detected values and safety factor β and quit work, typical condition is that automobile does not carry out braking during standstill but driving engine is flame-out;
When automobile is i in the gradient
1The ramp on be in the hydraulic parking braking state, one P PARK Position P switch 140 detects chaufeur put in first gear, braking during standstill switch 150 detects the intention that chaufeur is not removed braking during standstill, engine speed sensor 130 detects engine speed in setting range, throttle position switch 115 detected accelerator open degrees drop on started district as shown in Figure 3, and to be engine torque increase value after kinking is calculated greater than the cooresponding grade resistance square of Slope Transducer 120 detected values T through change-speed box and main reduction gear reduction of speed
I1With rolling resistance of wheel square T
F1Sum T
Z1The time, electronic control unit 200 by 2/2-way normally open solenoid valve 311 control clutchs engagement amount and engaging speed and feed back by clutch position sensor 105, when driving engine is delivered to torque T on the wheel after the conversion of clutch engagement amount
C1Be not less than T
Z1The time, electronic control unit 200 at first makes 2/2-way normally open solenoid valve 322 and 323 dead electricity and opening simultaneously, hydraulic braking force is released, then make power-transfer clutch with certain engaging speed full engagement by control 2/2-way normally open solenoid valve 311, like this, automobile is able to gentle start, and chaufeur is as long as a foot throttle just can be realized the start assisting function, and typical condition is the more urban highways of traffic signal lamp;
When car speed sensor 125 detected values detect chaufeur and do not have step on the accelerator, braking during standstill switch 150 to detect chaufeur the intention of implementing emergency brake is arranged greater than a certain threshold value, throttle position switch 115, electronic control unit 200 sends control command, driving DC machine 411 and 421 just changes simultaneously, the cooresponding emergency brake power of the working current sum that detects DC machine 411 and 421 until electronic control unit 200 greater than the emergency brake power of setting after and quit work, automobile is able to steadily slow down until stopping, and emergency brake is achieved.
The existence of check valve 312,321,324 has guaranteed that chaufeur is higher than the control preceence of 200 pairs of pedal of clutchs 510 of electronic control unit and brake pedal 610 to the manipulation preceence of pedal of clutch 510 and brake pedal 610, can guarantee that simultaneously chaufeur still can be handled power-transfer clutch and drg respectively by pedal of clutch 510 and brake pedal 610 when 2/2-way normally open solenoid valve 311,322,323 or electronic control unit 200 break down.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (8)
1. hand gear automobile electric control parking and start assisting control method, it is characterized in that: by clutch position sensor (105), brake-pressure sensor (110), throttle position switch (115), Slope Transducer (120), car speed sensor (125), engine speed sensor (130), ignition lock (135), one P PARK Position P switch (140), after the signal that the signal gathering unit (100) that start assisting switch (145) and braking during standstill switch (150) are formed is gathered is received by the data reception module (210) in the electronic control unit (200), enter the data processing module (220) in the electronic control unit (200), the data that data processing module (220) comes data receiver module (210) transmission are analyzed, after judgement and the decision-making, send control command, one tunnel instruction enters the DC machine driver module (230) in the electronic control unit (200), make it drive left rear wheel electronic brake device (410) that left rear wheel DC machine (411) is housed and the off hind wheel electronic brake device (420) that off hind wheel DC machine (421) is housed work respectively, another road instruction enters the solenoid-driven module (240) in the electronic control unit (200), make it drive first respectively, second, the 3rd 2/2-way normally open solenoid valve (311,322,323) work, by control left rear wheel DC machine (411), off hind wheel DC machine (421), first, second, the 3rd 2/2-way normally open solenoid valve (311,322,323) energising opportunity and outage realize electric control parking opportunity, start assisting, the emergency brake function, wherein the electric control parking function comprises hydraulic pressure Parking subfunction at least, armstrong's patent Parking subfunction, automation Parking subfunction.
2. a kind of hand gear automobile electric control parking according to claim 1 and start assisting control method is characterized in that: whether described electronic control unit (200) is opened according to described start assisting switch (145) is judged that automobile is in hydraulic pressure Parking pattern or is in mechanical Parking pattern.
3. a kind of hand gear automobile electric control parking according to claim 2 and start assisting control method, it is characterized in that: in described hydraulic pressure Parking pattern, be when automobile does not carry out hydraulic parking braking, described electronic control unit (200) is according to described car speed sensor (125), ignition lock (135), clutch position sensor (105), brake-pressure sensor (110), the signal that Slope Transducer (120) is gathered is controlled described three 2/2-way normally open solenoid valves (311,322, closing opportunity 323), thereby first subfunction---the hydraulic pressure parking function in the realization electric control parking function.
4. a kind of hand gear automobile electric control parking according to claim 2 and start assisting control method, it is characterized in that: in described mechanical Parking pattern, be when automobile does not carry out mechanical braking during standstill, described electronic control unit (200) is according to described car speed sensor (125), ignition lock (135), braking during standstill switch (150), brake-pressure sensor (110), the signal that Slope Transducer (120) is gathered and the current feedback signal of described left rear wheel DC machine (411) and off hind wheel DC machine (421) are controlled the just commentaries on classics opportunity of described left rear wheel DC machine (411) and off hind wheel DC machine (421) and are stopped opportunity, thereby mechanical braking during standstill is implemented, when automobile carries out mechanical braking during standstill, described electronic control unit (200) is according to described ignition lock (135), braking during standstill switch (150), brake-pressure sensor (110), the signal that Slope Transducer (120) is gathered and the current feedback signal of described left rear wheel DC machine (411) and off hind wheel DC machine (421) are controlled the counter-rotating opportunity of described left rear wheel DC machine (411) and off hind wheel DC machine (421) and are stopped opportunity, thereby mechanical braking during standstill is removed, so just realized second subfunction---the armstrong's patent parking function in the electric control parking function.
5. a kind of hand gear automobile electric control parking according to claim 1 and start assisting control method is characterized in that: the realization of described automation parking function has three kinds of situations at least; First kind of situation is that described electronic control unit (200) is controlled the just commentaries on classics opportunity of left rear wheel DC machine (411) and off hind wheel DC machine (421) and stopped opportunity according to the signal of described car speed sensor (125), throttle position switch (115), brake-pressure sensor (110), Slope Transducer (120) collection and the current feedback signal of described left rear wheel DC machine (411) and off hind wheel DC machine (421); Second kind of situation is that automobile has carried out hydraulic parking braking, described electronic control unit (200) is at first according to the hydraulic parking braking time, described braking during standstill switch (150), brake-pressure sensor (110), the signal that Slope Transducer (120) is gathered and the current feedback signal of described left rear wheel DC machine (411) and off hind wheel DC machine (421) are controlled the just commentaries on classics opportunity of described left rear wheel DC machine (411) and off hind wheel DC machine (421) and are stopped opportunity, drive second then, the 3rd 2/2-way normally open solenoid valve (322,323) dead electricity and opening simultaneously; The third situation is that automobile does not carry out braking during standstill, and described electronic control unit (200) is controlled the just commentaries on classics opportunity of described left rear wheel DC machine (411) and off hind wheel DC machine (421) and stopped opportunity according to the signal of described car speed sensor (125), ignition lock (135), brake-pressure sensor (110), Slope Transducer (120) collection and the current feedback signal of described left rear wheel DC machine (411) and off hind wheel DC machine (421).
6. a kind of hand gear automobile electric control parking according to claim 1 and start assisting control method, it is characterized in that: described start assisting function must be worked as automobile and carry out could realizing behind the hydraulic parking braking, specifically, described electronic control unit (200) is according to a described P PARK Position P switch (140), braking during standstill switch (150), engine speed sensor (130), throttle position switch (115), the signal that Slope Transducer (120) is gathered is controlled the dutycycle of first 2/2-way normally open solenoid valve (311) and second, the 3rd 2/2-way normally open solenoid valve (322, opening opportunity 323), thus realize the start assisting function.
7. a kind of hand gear automobile electric control parking according to claim 1 and start assisting control method, it is characterized in that: described electronic control unit (200) is also controlled the just commentaries on classics opportunity of described left rear wheel DC machine (411) and off hind wheel DC machine (421) and is stopped opportunity according to the signal of described car speed sensor (125), throttle position switch (115), braking during standstill switch (150) collection and the current feedback signal of described left rear wheel DC machine (411) and off hind wheel DC machine (421), thereby emergency brake is implemented.
8. a system that implements described hand gear automobile electric control parking of claim 1 and start assisting control method comprises signal gathering unit (100), electronic control unit (200), hydraulic control unit (300) and Parking performance element (400); It is characterized in that:
(1) signal gathering unit (100): comprise clutch position sensor (105), brake-pressure sensor (110), throttle position switch (115), Slope Transducer (120), car speed sensor (125), engine speed sensor (130), ignition lock (135), a P PARK Position P switch (140), start assisting switch (145) and braking during standstill switch (150), the mouth of described each sensor and each switch links to each other with electronic control unit (200) corresponding input end respectively;
(2) electronic control unit (200): comprise the data reception module (210) that each input end links to each other with the corresponding mouth of each switch with each sensor of described signal gathering unit (100) respectively, the data processing module (220) that input end links to each other with data reception module (210) mouth, DC machine driver module (230) and the solenoid-driven module (240) that input end links to each other with the corresponding mouth of data processing module (220) respectively;
(3) hydraulic control unit (300): comprise clutch hydraulic pressure control module (310) and drg hydraulic control module (320); Clutch hydraulic pressure control module (310) comprises and is connected on first 2/2-way normally open solenoid valve (311) on the hydraulic tubing between clutch mass cylinder (520) and the clutch operating cylinder (530) and first check valve (312) in parallel with it, the feeder ear of first 2/2-way normally open solenoid valve (311) links to each other with the corresponding mouth of solenoid-driven module (240), first check valve (312) oppositely ends in clutch mass cylinder (520) conducting to clutch operating cylinder (530) direction; Drg hydraulic control module (320) comprises second on the two-way brake piping that is connected on master brake cylinder (630) mouth respectively, the 3rd 2/2-way normally open solenoid valve (322,323) and respectively with second, the 3rd 2/2-way normally open solenoid valve (322,323) second of parallel connection, the 3rd check valve (321,324), second, the 3rd 2/2-way normally open solenoid valve (322,323) feeder ear links to each other with the corresponding mouth of solenoid-driven module (240) respectively, second, the 3rd check valve (321,324) in master brake cylinder (630) conducting to the drg direction, oppositely end;
(4) Parking performance element (400): comprise left rear wheel electronic brake device (410) and off hind wheel electronic brake device (420), both inside are equipped with left rear wheel DC machine (411) and off hind wheel DC machine (421) respectively, and the feeder ear of described left rear wheel DC machine (411) and off hind wheel DC machine (421) links to each other with the corresponding mouth of described DC machine driver module (230) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097642A CN101537831B (en) | 2009-04-13 | 2009-04-13 | Control method of automobile electric control parking and start assisting by manual transmission and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097642A CN101537831B (en) | 2009-04-13 | 2009-04-13 | Control method of automobile electric control parking and start assisting by manual transmission and system thereof |
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| Publication Number | Publication Date |
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| CN101537831A true CN101537831A (en) | 2009-09-23 |
| CN101537831B CN101537831B (en) | 2012-10-03 |
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| CN200910097642A Expired - Fee Related CN101537831B (en) | 2009-04-13 | 2009-04-13 | Control method of automobile electric control parking and start assisting by manual transmission and system thereof |
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