CN101024398B - Electric parking brake device and control method for electric parking brake - Google Patents
Electric parking brake device and control method for electric parking brake Download PDFInfo
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- CN101024398B CN101024398B CN2007100802869A CN200710080286A CN101024398B CN 101024398 B CN101024398 B CN 101024398B CN 2007100802869 A CN2007100802869 A CN 2007100802869A CN 200710080286 A CN200710080286 A CN 200710080286A CN 101024398 B CN101024398 B CN 101024398B
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Abstract
在电动停车制动设备(150)中，当有制动需求时，电动执行器(30)使停车制动器(14)进行制动。执行器控制装置(102)通过控制电动执行器(30)的动作来控制停车制动器(14)的制动和释放。状态存储装置(106)存储停车制动器(14)的控制状态。当车辆系统起动时，如果存储在状态存储装置(106)中的停车制动器(14)的控制状态指示停车制动器(14)的制动或者释放的控制被中断，则执行器控制装置(102)完成被中断的控制。因而，电动停车制动设备可以用于其中电源电压降低的不能预见的情况。
In the electric parking brake device (150), when there is a braking demand, the electric actuator (30) makes the parking brake (14) perform braking. The actuator control device (102) controls braking and release of the parking brake (14) by controlling the action of the electric actuator (30). A state storage device (106) stores a control state of the parking brake (14). When the vehicle system is started, if the control state of the parking brake (14) stored in the state storage device (106) indicates that the control of braking or releasing of the parking brake (14) is interrupted, the actuator control means (102) completes Interrupted control. Thus, the electric parking brake apparatus can be used in unforeseen situations in which the power supply voltage drops.
Description
Technical field
The present invention relates to electronic stopping brake equipment, more specifically, relate to the technology of the action of controlling electric parking brake.
Background technology
Parking brake generally is installed in the vehicle.In the simplest form of parking brake, by control lever pulling cable so that dynamic friction parts, with braking turning unit and wheel.Yet, also be extensive use of wherein based on the electronic stopping brake equipment of driving motors such as switching manipulation with winding and unwinding cable.Can mesh and separate electronic stopping brake equipment by automatic guidance, the state by the identification vehicle and carry out this automatic guidance such as the operation that the chaufeur of switching manipulation etc. will carry out.
Traditionally, for the safety of the action that improves electronic stopping brake equipment, when vehicle in predetermined following time of motoring condition, the generation of braking force is restricted (for example, referring to Japanese Patent Application Publication No.HEI 11-180270) in the electric parking brake.
The various controls of adopting electronic stopping brake equipment have been described.Although adopt the simple and easy or automatic operation of Based Intelligent Control and vehicle more and more, also in the improvement that continues to seek further function and safety.Particularly, consider the characteristic of electricity powered stopping brake equipment, expect that electronic stopping brake equipment can be used for unpredictalbe situation that power line voltage reduces with being well suited for.
Summary of the invention
Even the invention provides a kind of when unforeseeable situation that the power line voltage that vehicle takes place descends, the electronic stopping brake equipment that can more suitably move.
Electronic stopping brake equipment according to one aspect of the invention comprises: electric actuator brakes parking brake when braking requirement; Actuator controller is used for controlling by the action of control electronic actuators the braking and the release of parking brake; And releasing limiting device, be used for release control when Vehicular system stop starting time limit vehicle brake.
Aforementioned " starting of Vehicular system " can be this starting that for example is installed in the starting of the electronic control unit in the vehicle and for example can carries out when the propulsion source of vehicle starts.According to this aspect, avoided releasing sb. unconditionally of when Vehicular system starts parking brake; Thereby, can avoid in the bevelled position, vehicle begins situation about moving immediately when Vehicular system starts.Thereby, can guarantee safety.
Releasing limiting device can have: the serviceability determining section is used for determining the serviceability by the brake operating parts of driver's operation; Forbid control part with release, when Vehicular system starts,, then discharge the release control of forbidding control part parking prohibition drg if determine the brake operating parts under off working state." the brake operating parts " herein mentioned are foot brake pedals for example, only can Parking permitted when foot brake pedal is depressed by chaufeur the release of drg.According to this aspect, because if the brake operating parts when not being operated parking brake just do not discharge, so can avoid when Vehicular system starts vehicle to begin situation about moving immediately, can guarantee safety.On the other hand, because, just carry out the preliminary control of electric parking brake equipment, so can be when Vehicular system starts according to the release of situation automatic guidance parking brake as long as the brake operating parts are operated.
Electric parking brake equipment may further include the status storage of the state of a control that is used to store parking brake.Indicate the braking of parking brake or the control of release to be interrupted if be stored in the state of a control of the parking brake in the status storage when Vehicular system starts, then actuator controller can recover interrupted control under the control of releasing limiting device." status storage " herein mentioned can for example be the nonvolatile memory such as EEPROM etc.According to this aspect, even in the control of electrical parking brake the wherein unforeseeable situation of power line voltage decline takes place midway, the content of the control that stops halfway can easily being discerned in the back.Thereby the interrupted control that can recover electrical parking brake when Vehicular system starts makes it possible to realize in mode more completely the control of electrical parking brake.
Releasing limiting device can comprise: the state of a control amount is obtained part, is used to obtain the state of a control amount of parking brake; With the state restricted part, when Vehicular system starts, if the state of a control amount of parking brake in preset range, then the state restricted part makes actuator controller carry out control of braking so that parking brake is braked." the state of a control amount of parking brake " is even for example can be that power cut-off also can mechanically maintained physical quantity (such as cable tension of the braking force that is provided for producing parking brake etc.)." preset range " for example can be illustrated in the braking of parking brake or discharge in the scope of the state of a control amount of unusual state is arranged.In this respect, same, if in the control of electric parking brake unforeseeable situation such as degradation under the power line voltage takes place midway, electrical parking brake also can automatically be braked when Vehicular system starts.Thereby electrical parking brake can be by control with being more suitable for.And, be stored in " status storage " with the control content of wherein relevant Halfway Stopping and compare with electrical parking brake, owing to do not need to store the control content of Halfway Stopping, can save the use of the storage area of EEPROM etc.
Description of drawings
From the description of following exemplary embodiment, with reference to accompanying drawing, aforementioned and further purpose of the present invention, feature and advantage will become obviously, and wherein similarly label is used for representing similar elements, wherein:
Fig. 1 is the scantling plan of vehicle among the comparative example.
Fig. 2 is the scantling plan of electric parking brake equipment among the comparative example.
The diagram of circuit of Fig. 3 illustrates the control program that system's starting among the comparative example time is used for parking brake.
Fig. 4 is the scantling plan of vehicle among first embodiment.
Fig. 5 is the scantling plan of electric parking brake equipment among first embodiment.
The diagram of circuit of Fig. 6 illustrates the control program that system's starting among first embodiment time is used for parking brake.
Fig. 7 is the scantling plan of the electric parking brake equipment among second embodiment.
The scope of the state of a control amount of the schematically illustrated parking brake of Fig. 8.
The diagram of circuit of Fig. 9 illustrates the control program that system's starting among second embodiment time is used for parking brake.
The specific embodiment
As background technology of the present invention and for the ease of understanding, will the comparative examples embodiment of electric parking brake equipment be described.When the state of a control of electrical parking brake is stored among the EEPROM, and when Vehicular system starts, judge whether the actuating electronic parking brake according to the state of a control that is stored among the EEPROM.For example, even in the control way of electrical parking brake, power line voltage is step-down for a certain reason, is arranged in the information storage on way at EEPROM about control.Thereby, when Vehicular system starts, can recover by the control of the interruption of electrical parking brake, make it possible to guarantee to control more completely.
Fig. 1 is the scantling plan according to comparative example's vehicle 10.Vehicle 10 is provided with the near front wheel 12FL, off front wheel 12FR, left rear wheel 12RL and off hind wheel 12RR (below, if necessary, the near front wheel 12FL, off front wheel 12FR, left rear wheel 12RL and off hind wheel 12RR will be generically and collectively referred to as " wheel 12 ").Left rear wheel 12RL and off hind wheel 12RR are provided with left rear wheel parking brake 14L and off hind wheel parking brake 14R (below, left rear wheel parking brake 14L and off hind wheel parking brake 14R will be generically and collectively referred to as " parking brake 14 ").
Left rear wheel parking brake 14L and off hind wheel parking brake 14R are connected to electric actuator 30 by cable 48 respectively.Electronic actuators 30 is provided with electrical motor 32.Its propulsive effort pulling cable 48 of electrical motor 32 usefulness is so that left rear wheel parking brake 14L and off hind wheel parking brake 14R brake.Along with cable 48 is pulled, left rear wheel parking brake 14L and off hind wheel parking brake 14R brake left rear wheel 12RL and off hind wheel 12RR respectively.Any one is provided with the tension pick-up 34 that detects cable 48 tension force at least among left rear wheel parking brake 14L and the off hind wheel parking brake 14R.
Inside at the passenger accommodation of vehicle 10 is provided with ignition lock 16 and parking brake application of force switch 18.User by vehicle 10 operates the power supply that ignition lock 16 comes opening and closing vehicle 10.
ECU 100 is based on judging from the information of parking brake application of force switch 18 inputs whether parking brake application of force switch 18 is opened or closed.ECU 100 is based on the electrical motor 32 input actuated signals of tension data to being arranged on electric actuator 30 of the cable of importing from tension pick-up 34 48.By via electric actuator 30 pulling or discharge cable 48, exactly corresponding to parking brake application of force switch 18 open and close operation, electrical motor 32 activates the braking and the release of parking brakes 14.In addition, when ECU 100 receives when being used for the control command signal of parking brake 14 from another system, ECU 100 is also to control parking brake 14 with the roughly the same mode of the situation of the on/off operation of parking brake application of force switch 18.
Fig. 2 is the scantling plan of the electronic stopping brake equipment 150 among the comparative example.Electronic stopping brake equipment 150 comprises electric actuator 30, two cables 48 and actuator controllers 102 and is included in status storage 106 among the ECU 100.One end of each cable 48 is connected to electric actuator 30, and the other end of each cable is connected in the wheel 12 of vehicle 10 corresponding one.
Electronic stopping brake equipment 150 among the comparative example is connected to the left rear wheel parking brake 14L that is arranged among the left rear wheel 12RL, and is connected to the off hind wheel parking brake 14R that is arranged among the off hind wheel 12RR.In addition, in modification, the notion of electronic stopping brake equipment 150 can be defined as the part that makes parking brake 14 be included as electronic stopping brake equipment 150 structures.
For left rear wheel parking brake 14L and off hind wheel parking brake 14R, adopt drum brake mechanism.Each of left rear wheel parking brake 14L and off hind wheel parking brake 14R has tubular brake wheel 50, be arranged on a pair of brake shoe brake cheek 51 in the brake wheel 50 and be fixed to the friction lining 52 of each brake shoe brake cheek 51, tubular brake wheel 50 is fixed to wheel 12 and rotates with wheel 12, when friction lining 52 and brake wheel 50 push when contacting, friction lining 52 is to wheel 12 brake activation power.
Brake-shoe lever 53 is assembled in two brake shoe brake cheek 51 that are arranged in the brake wheel 50 via lever pin.One end of cable 48 is connected to brake-shoe lever 53.Brake-shoe lever 53 is connected to another brake shoe brake cheek 51 via hoof strut bar 54.When cable 48 during by electric actuator 30 pulling, two brake shoe brake cheek 51 in each brake wheel 50 open via brake-shoe lever 53 and hoof strut bar 54, make the inner peripheral surface of friction lining 52 extruding contact brake wheels 50, thus to wheel 12 brake activation power.
Ball-screw 40 and balancing device 44 that electric actuator 30 has electrical motor 32, driven by electrical motor 32.When the actuated signal as the braking request was input to electrical motor 32, electrical motor 32 activated, feasible first gear, 36 rotations that are fixed to the axle drive shaft of electrical motor 32. First gear 36 and 38 engagements of second gear, second gear 38 is fixed to the ball-screw 40 with ball threaded portion.Thereby along with 36 rotations of first gear, ball-screw 40 is via 38 rotations of second gear.
The inner peripheral surface of screwed part 42 has tooth portion, and screwed part 42 is screwed onto the ball threaded portion of ball-screw 40.Along with ball-screw 40 rotations, screwed part 42 moves along the direction of the axis of ball-screw 40.Balancing device 44 is assembled to screwed part 42 via S. A. 46, makes balancing device 44 to pivot around S. A. 46.Two cables 48 that are connected to parking brake 14 are connected respectively to two opposite ends of balancing device 44.When ball-screw 40 rotations, screwed part 42 moves along the direction of the rotation axis of ball-screw 40, spurs cable 48 or unclamps this pulling, and parking brake 14 is braked or discharged thus.Because balancing device 44 is assembled to screwed part 42 pivotly, so the pivot of the Tension Difference between two cables 48 by balancing device 44 is absorbed.As a result, because the propulsive effort of electrical motor 32, two cables 48 are spurred by tension force, make the braking force that equates be applied to left rear wheel 12RL and off hind wheel 12RR.
The tension pick-up 34 that detects cable 48 tension force is set in electric actuator 30.The tension force of cable 48 is represented the state of a control amount of parking brake 14.Tension pick-up 34 is arranged between balancing device 44 and the parking brake 14.Because in the tension force pulling that two cables 48 are equated, tension pick-up 34 can detect tension force, so can detect tension force accurately.Tension pick-up 34 is connected to ECU 100, and the tension data of the cable 48 that is detected by tension pick-up 34 is input to ECU 100.No matter have unregulated power to supply with, can mechanically keep the tension force of cable 48.Thereby even when being fed to the power breakdown of electric actuator 30, tension force also can access and keep.
ECU 100 comprises and being used for by exporting actuated signals and the actuator controller 102 at control motor 32 to electrical motor 32.Actuator controller 102 is by according to the on/off operation of parking brake application of force switch 18 and to electrical motor 32 output actuated signals, controls parking brake 14 and brakes and discharge.In addition, when actuator controller 102 receives when being used for the control command signal of parking brake 14 from another system, actuator controller 102 is also braked and is discharged to control parking brake 14 with essentially identical mode under the on/off operation situation of parking brake application of force switch 18.When parking brake 14 will carry out glancing impact, actuator controller 102 outputs are used to make the actuated signal of electrical motor 32 rotations, are increased to the control target that can be considered in " normal brake application " scope up to the tension data from tension pick-up 34.In the time will discharging parking brake 14, actuator controller 102 outputs make the actuated signal of electrical motor 32 contrarotations, are reduced to the control target that can be considered in " normal release " scope up to the tension data from tension pick-up 34 feedbacks.The control target that can be considered to the control target of " normal brake application " and can be considered to " normal discharge " is determined according to the vehicle 10 residing states size of the inclination at vehicle 10 stop position places (for example).By obtain the chart that stop position inclination data and reference wherein define corresponding relation between inclination value and the tension force from the acceleration sensor (not shown), actuator controller 102 determines that control target are as required tension force.Because determine the control target of tension force in this way according to the size of inclination, thus can limit the generation of unnecessary tension force, and can keep the durability of parking brake 14 and cable 48.
ECU 100 further comprises the status storage 106 of the state of a control that is used to store parking brake 14.Status storage 106 for example is made of the nonvolatile memory such as EEPROM etc.When carrying out the control of braking of parking brake 14, the mark of expression " the parking brake control of braking is interrupted " in the actuator controller 102 opening memory storages 106, when carrying out the release control of parking brake 14, the mark of expression in the opening memory storage 106 " parking brake discharges control and is interrupted ".
When the starting Vehicular system, actuator controller 102 reads the state of a control of the parking brake 14 that is stored in the status storage 106.If be stored in the parking brake 14 in the status storage 106 state of a control indication parking brake 14 braking or discharge control and also do not finish, then actuator controller 102 recovers the control also do not finished.For example, if the control of braking of parking brake 14 takes place or discharge the unexpected situation that control is cut off the power supply and interrupted owing to the power supply of for example ECU 100 in control process, then the control content of Halfway Stopping is stored in the status storage 106.The reason that for example can imagine the power cut-off of ECU 100 for example is the reduction of contingent cell pressure when fire an engine, deliberately takes off the abnormal condition etc. of battery.If actuator controller 102 has recovered the braking of the parking brake 14 also do not finished or has discharged control, then when control finishes, actuator controller 102 is closed the indication " the parking brake control of braking is interrupted " that is stored in the status storage 106 or the mark of " parking brake discharges control and is interrupted ".
Fig. 3 is the diagram of circuit that illustrates according to the control program when system starts of comparative example's parking brake 14.At first, when ECU 100 startings (S10), actuator controller 102 reads the state of a control (S12) of parking brake 14 from status storage 106.If the state of a control of indication parking brake 14 is the interrupted mark of control of braking to be out (being "Yes" among the S14), then to handle and proceed to step S16.If the interrupted mark of indication control of braking is to close (being "No" among the S14), and the interrupted mark of indication release control is out (being "Yes" among the S22), then handles proceeding to step S24.If it also is to close (being "No" among the S22), the processing of then skipping S24 and later step that indication discharges the interrupted mark of control.
The common control of braking of parking brake 14 is represented in the processing of S16 to S20, this control of braking also except when the time beyond system when starting carry out.In the flow process of Fig. 3 that the flow process of carrying out when system starts is shown, no matter the state of storing in status storage 106 how, is also carried out the common control of braking of parking brake 14.At first, before the starting of the control of braking of parking brake 14, what actuator controller 102 was carried out the interrupted mark of indication control of braking in the opening memory storages 106 writes processing (S16).Then, actuator controller 102 driving motors 32 are to carry out the control of braking (S18) of parking brake 14.After finishing control of braking, the indication interrupted mark of control of braking (S20) in the actuator controller 102 closed condition memory storages 106.In addition, (process that comprises the common control of braking of parking brake 14) is because under the situation that low generation ECU 100 such as power line voltage reset in the S18 way, do not carry out S20, but keep the opening that the control of braking that writes among the S16 is interrupted mark, and be stored in the status storage 106.Thereby, when when next start system, having read the interrupted mark of control of braking, the control of braking of the parking brake 14 that recovery is not also finished.
S24 represents the common release control of parking brake 14 to the processing of S28, and this discharges the time execution of control can also be when start except system.In the flow process of Fig. 3 that the flow process of carrying out is shown,, also carry out the common release control of parking brake 14 no matter the interrupted mark of control of braking is opened or closed in status storage 106 when system starts.At first, before the release of parking brake 14 control beginning, what actuator controller 102 carried out that indication in the opening memory storages 106 discharges the interrupted mark of control writes processing (S24).Then, actuator controller 102 driving motors 32 are carried out the release control (S26) of parking brake 14.After carrying out release control, status storage 106 is closed indication and is discharged control interrupted mark (S28).In addition, if (process that comprises the common release control of parking brake 14) resetting in the S24 way owing to low generation ECU 100 such as power line voltage, then do not carry out S28, but the opening of interrupted mark is controlled in the release that keeps writing among the S24, and be stored in the status storage 106.Thereby, when next start system, read when discharging the interrupted mark of control, recover the interrupted release control of parking brake 14.
As mentioned above, when system started, the electronic stopping brake equipment 150 among the comparative example was controlled parking brake 14 in the mode that is more suitable for.In the prior art, even in the control way of parking brake 14 unforeseeable low pressure takes place, parking brake 14 may be meshed partly when recovering electric power, thereby no matter parking brake actual being engaged whether, do not have other selection can only open the indicator lamp that indication parking brake 14 is braked, perhaps close indicator lamp.Thereby, can imagine such situation, although wherein in fact do not apply enough braking forces, indicate the indicator lamp of parking brake 14 brakings to open.According to the comparative example,, make parking brake 14 can be controlled as state more completely if the control of parking brake 14 owing to the unforeseeable low pressure that takes place in control process is interrupted, is controlled and can be recovered when ECU starting 100 next time so.And, can place completely braking mode or open or closed indicator lamp after the release position completely at parking brake 14.
In first exemplary embodiment according to electronic stopping brake equipment of the present invention, the control content of actuator controller 102 is that with the different of actuator controller 102 among the comparative example being controlled under the restriction that is caused by following releasing limiting device of parking brake 14 is restored.Below, main description and comparative example's difference, and the description of omitting common trait.
Fig. 4 is the scantling plan according to the vehicle 10 of first embodiment.Electronic stopping brake equipment in the present embodiment and the electronic stopping brake equipment among the comparative example have roughly the same 26S Proteasome Structure and Function, obtain the serviceability of the brake service parts that caused by chaufeur from drg detecting device 20 except ECU 100.The serviceability of brake service parts is represented chaufeur pressing down foot brake pedal.Drg detecting device 20 can be by measuring the brake lamp (not shown) voltage or detect the brake service parts based on the information that the ECU from the action that monitors foot-operated brake obtains and whether be operated.
Fig. 5 is the scantling plan according to the electronic stopping brake equipment 152 of first embodiment.Electronic stopping brake equipment 152 in the present embodiment has roughly the same 26S Proteasome Structure and Function with the electronic stopping brake equipment 150 among the comparative example, except comprise releasing limiting device 104 in ECU 100.When Vehicular system starts, the release of releasing limiting device 104 discouraging of parking drgs 14 control.Releasing limiting device 104 comprises and is used for obtaining part 110 and control part 112 is forbidden in release from the serviceability that drg detecting device 20 obtains the serviceability of the brake service parts that caused by chaufeur, release forbids that control part 112 is used for getting access under the situation of the information of brake service parts under non-operating state when Vehicular system starts, the release of parking prohibition drg 14 control.Forbid that the release that control part 112 is carried out parking brakes 14 forbids control as long as discharge, actuator controller 102 is the drive controlling of operating motor 32 not just.That is, only forbid in release that control part 112 stops to carry out and discharge under the situation of forbidding controlling that actuator controller 102 is carried out the recovery that the release of parking brakes 14 is controlled when system start.
The diagram of circuit of Fig. 6 illustrates the control program that is used for parking brake 14 according to first embodiment when system starts.Flow process and the flow process among the Fig. 3 among the comparative example among Fig. 6 are roughly the same, except S44.Particularly, the S30 among Fig. 6 is roughly the same to the processing of the processing of S42 and the S10 to S22 among Fig. 3, and the processing of S46 to S50 and the processing of the S24 to S28 among Fig. 3 are roughly the same.
If in S42, the interrupted mark of indication release control that is stored in the status storage 106 is out (being "Yes" in S42), and (being "Yes" among the S44) controlled in the release of then only carrying out S46 and later step under the situation that the brake operating parts have been operated.If the brake service parts are not operation (being "No" among the S44) also, then skip the release control of S46 and later step.
According to present embodiment, if the brake service parts also are not operated when system starts, then parking brake 14 can not be released automatically.Thereby, even the release of indication parking brake 14 is controlled interrupted mark and is out in system's when starting status storage 106, also avoided when system starts vehicle to begin situation about moving immediately, thereby, safety improved.On the other hand, as long as the brake operating parts are operated when system starts, the release control of the parking brake 14 that then automatic recovery is not also finished.Thereby electric parking brake can be so that mode is controlled more completely.
Electronic stopping brake equipment among electronic stopping brake equipment in the present embodiment and first embodiment different are the limiting program that undertaken by releasing limiting device.Below, main different with first embodiment are described, and the description of the common feature of omission and comparative example and first embodiment.
Fig. 7 is the scantling plan according to the electronic stopping brake equipment 154 of second embodiment.Electronic stopping brake equipment 154 in the present embodiment is with the different of electronic stopping brake equipment 152 among first embodiment, the driving that actuator controller 102 comes control motor 32 based on the tension data that receives from tension pick-up 34.
In the present embodiment, releasing limiting device 104 comprises that the state of a control amount of the state of a control amount of obtaining parking brake 14 obtains part 114 and state restricted part 116, and state restricted part 116 is used for coming by actuator controller 102 according to the state of a control amount of parking brake 14 control of discouraging of parking drg 14 when Vehicular system starts.
The state of a control amount is obtained part 114 and is obtained the state of a control amount of tension data as parking brake 14 from tension pick-up 34.State restricted part 116 makes the control of braking of parking brake 14 carry out via actuator controller 102, if when system the starts state of a control amount of parking brake 14 of making is in the scope except that normal range, then the state of a control amount of parking brake 14 enters normal range.The scope that is considered to the state of a control amount of normal parking brake 14 can be determined according to the position inclination size that vehicle 10 stops.
Fig. 8 schematically shows the scope of the state of a control amount of parking brake 14.As shown in Figure 8, the state of a control of parking brake 14 is still determined in " abnormal ranges " in " normal range " based on the size of the state of a control amount of parking brake 14.For example, if the state of a control amount of parking brake 14 is the values in normal brake application scope 120, then state restricted part 116 determines that parking brake 14 is in complete braking mode.If the state of a control amount of parking brake 14 is the values in normal release scope 124, then state restricted part 116 determines that parking brake 14 is in complete release position.If the state of a control amount of parking brake 14 is not in normal brake application scope 120 or when normally discharging value in the scope 124, promptly, when being the value in abnormal ranges 122, state restricted part 116 is determined the control of braking of parking brake 14 or discharges control to interrupt.
Even the state of a control amount that is noted that parking brake 14 herein is in abnormal ranges 122, the control of braking of state of a control amount in abnormal ranges 122 indication parking brake 14 is interrupted or discharges control does not have difference between being interrupted.Thereby, if the state of a control amount of parking brake 14 in abnormal ranges 122, state restricted part in the present embodiment 116 is implemented as the recovery of the control of parking brake 14 recovery of control of braking without exception.Thereby, eliminated the braking of the interruption of parking brake 14; And, can avoid because the motion of not expecting of the vehicle 10 that the automatic release of parking brake 14 causes.
The diagram of circuit of Fig. 9 illustrates the control program that is used for parking brake 14 according to second embodiment when system starts.At first, when ECU 100 startings (S60), actuator controller 102 is determined the control target (S62) of electric actuator 30 based on the tension data that obtains from tension pick-up 34.If the tension data that obtains from tension pick-up 34 is not in normal braking scope 120 or discharge normally in the scope 124 (being "No" the S64), then state restricted part 116 determines that the control of parking brake 14 is in the state of interruption, and carries out the control of braking (S66) of parking brake 14 via actuator controller 102.In normal brake application scope 120 or normally discharge the scope 124 and (be "Yes" among the S64), then skip S66 if in S64, determine the tension data that obtains from tension pick-up 34.
According to present embodiment,, parking brake 14 is braked if unforeseeable situation such as low power line voltage takes place in the control of parking brake 14 way.Thereby as in other embodiments, parking brake 14 can be by control with being more suitable for.And, compare with first and second embodiment, owing to do not need the control content about the Halfway Stopping of parking brake 14 is stored in the nonvolatile memory such as status storage 106, so use that can the conserve memory zone.In addition, when system starts, avoided the automatic release of parking brake 14, and can prevent the motion of not expecting of vehicle 10, thereby improved safety.
The invention is not restricted to previous embodiment.And, can be based in the art those skilled in the art's understanding, embodiment is increased various modifications such as design modification etc., the embodiment that has increased such modification can be within the scope of the present invention.
Above in conjunction with first embodiment, the example that whether has been operated to the release control of discouraging of parking drg 14 when system starts according to the brake service parts has been described.Above in conjunction with second embodiment, the example of coming the release control of discouraging of parking drg 14 when system starts according to the state of a control amount of parking brake 14 has been described.In these are revised, can be by controlling except the release that comes discouraging of parking drg 14 in conjunction with the method the said method of first or second embodiment.Such releasing limiting device can add among the comparative example to realize electronic stopping brake equipment of the present invention.
Claims (6)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006041576A JP4466582B2 (en) | 2006-02-17 | 2006-02-17 | Electric parking brake device |
| JP2006-041576 | 2006-02-17 | ||
| JP2006041576 | 2006-02-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101024398A CN101024398A (en) | 2007-08-29 |
| CN101024398B true CN101024398B (en) | 2010-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100802869A Expired - Fee Related CN101024398B (en) | 2006-02-17 | 2007-02-16 | Electric parking brake device and control method for electric parking brake |
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| Country | Link |
|---|---|
| JP (1) | JP4466582B2 (en) |
| CN (1) | CN101024398B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008018946A1 (en) * | 2008-04-15 | 2009-10-22 | Lucas Automotive Gmbh | Technique for releasing an electric parking brake |
| DE102010041099A1 (en) * | 2010-09-21 | 2012-03-22 | Robert Bosch Gmbh | Electrically actuated parking brake i.e. automatic parking brake, recalibrating method for vehicle, involves setting memory request such that parking brake is opened after temporary failure of control unit |
| JP5766582B2 (en) * | 2011-10-31 | 2015-08-19 | 株式会社ハイレックスコーポレーション | Electric parking brake device |
| JP6182311B2 (en) * | 2012-11-30 | 2017-08-16 | 日立オートモティブシステムズ株式会社 | Brake device |
| JP5989530B2 (en) * | 2012-12-04 | 2016-09-07 | オムロンオートモーティブエレクトロニクス株式会社 | Electric parking brake control device |
| JP6129553B2 (en) | 2012-12-28 | 2017-05-17 | 日立オートモティブシステムズ株式会社 | Brake system |
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| WO2021192457A1 (en) * | 2020-03-26 | 2021-09-30 | 日立Astemo株式会社 | Electric parking brake device |
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| JP7424263B2 (en) * | 2020-09-30 | 2024-01-30 | 株式会社アドヴィックス | Vehicle electric parking brake device |
| DE102020214600A1 (en) | 2020-11-19 | 2022-05-19 | Robert Bosch Gesellschaft mit beschränkter Haftung | Control method for adjusting an electromechanical parking brake |
| JP7480742B2 (en) * | 2021-04-30 | 2024-05-10 | トヨタ自動車株式会社 | Electric tractor, control program for electric tractor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629043A (en) * | 1983-01-31 | 1986-12-16 | Mazda Motor Corporation | Electric parking brake system for a vehicle |
-
2006
- 2006-02-17 JP JP2006041576A patent/JP4466582B2/en active Active
-
2007
- 2007-02-16 CN CN2007100802869A patent/CN101024398B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629043A (en) * | 1983-01-31 | 1986-12-16 | Mazda Motor Corporation | Electric parking brake system for a vehicle |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-67932A 2002.03.08 |
| JP特开2005-247194A 2005.09.15 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101024398A (en) | 2007-08-29 |
| JP2007216896A (en) | 2007-08-30 |
| JP4466582B2 (en) | 2010-05-26 |
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