WO2016070876A1 - Verfahren zur schwingungsdämpfung eines antriebsstrangs mittels einer elektromaschine - Google Patents
Verfahren zur schwingungsdämpfung eines antriebsstrangs mittels einer elektromaschine Download PDFInfo
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- WO2016070876A1 WO2016070876A1 PCT/DE2015/200473 DE2015200473W WO2016070876A1 WO 2016070876 A1 WO2016070876 A1 WO 2016070876A1 DE 2015200473 W DE2015200473 W DE 2015200473W WO 2016070876 A1 WO2016070876 A1 WO 2016070876A1
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- electric machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/20—Reducing vibrations in the driveline
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
- B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/20—Reducing vibrations in the driveline
- B60W2030/206—Reducing vibrations in the driveline related or induced by the engine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0001—Details of the control system
- B60W2050/0002—Automatic control, details of type of controller or control system architecture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0001—Details of the control system
- B60W2050/0019—Control system elements or transfer functions
- B60W2050/0028—Mathematical models, e.g. for simulation
- B60W2050/0037—Mathematical models of vehicle sub-units
- B60W2050/0041—Mathematical models of vehicle sub-units of the drive line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0685—Engine crank angle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/081—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/083—Torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/088—Inertia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1015—Input shaft speed, e.g. turbine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the invention relates to a method for vibration damping of a drive train with an internal combustion engine with a voltage applied to a crankshaft engine torque, an electric machine, a transmission with a transmission input shaft and arranged between the crankshaft and transmission input shaft torque transmission device with at least one oscillatory inertial mass with a moment of inertia and a state controller Control of the electric machine by means of torsional vibrations at the transmission input shaft compensating compensation torque.
- Drive trains with an internal combustion engine and an electric machine are known as hybrid drive trains, in which the internal combustion engine and / or electric machine contribute moments for driving the vehicle.
- the internal combustion engine and the electric machine are coupled to one another via a mechanical interface and transmit the impressed engine torque (internal combustion engine) and operating torque (electric machine) via a transmission input shaft to a transmission and from there to the drive wheels.
- a torque transmission device is provided between the crankshaft of the internal combustion engine and the transmission input shaft, which dampens torsional vibrations, for example as a torsional vibration damper, as friction clutch can disconnect and couple the crankshaft from the transmission input shaft and / or otherwise transmits the engine torque to the transmission input shaft.
- the torque transmission device on the input side or output side to be rotatably coupled to a rotor of the electric machine.
- the internal combustion engine is subject to torsional vibration due to its principle of operation, whose vibration excitations of the drive train and the vehicle body lead to a loss of comfort in the vehicle and which are damped in a known manner by means of vibration damping devices, for example torsional vibration dampers, centrifugal pendulums and the like.
- vibration damping devices for example torsional vibration dampers, centrifugal pendulums and the like.
- rapid changes such as jumps in the moments of electric machine or
- the object of the invention is to provide a method for vibration damping of a
- the proposed method is used for the vibration damping of a drive train with an internal combustion engine with an applied torque to a crankshaft torque.
- the engine torque is due to the operating principle of the internal combustion engine, for example, as a diesel or gasoline engine torsional vibration.
- the drive train is equipped as a hybrid drive train with an electric machine, the sole drive of the vehicle with the internal combustion engine or the electric machine, a hybrid drive, a start of the internal combustion engine by the electric machine, a recuperation of mechanical energy to electrical energy gie and their storage and the like allowed.
- a transmission is provided with a plurality of automatically switched or manually insertable gears, automatically operated shift stages or continuously variable transmission with a transmission input shaft.
- a dual-clutch transmission may be provided with two partial transmissions with two transmission input shafts.
- a torque transmission device is provided, for example, one of a torsional vibration damper, for example a dual mass flywheel, multi-mass flywheel, a one-mass flywheel with downstream torsional vibration damper such as torsional vibration damper in a clutch disc, a torsional vibration damper such as a centrifugal pendulum on the one hand and / or a switching and / or starting clutch, distributor clutch and / or the like may be formed.
- the torque transmission device has at least one oscillatory inertia, that is to say from the engine torque to the oscillation and / or vibration-neutralizing flywheel mass with an inertia moment.
- the electric machine can be connected directly or by means of a coupling decoupled with the crankshaft at the pulley plane or the transmission side of the engine or arranged on the output side of the torque transmitting device and thus directly or coupled to the transmission input shaft or on a flywheel of the torque transmitting device, for example, with respect to the crankshaft and / or be arranged uncoupled from the transmission input shaft by means of corresponding couplings.
- the electric machine is controlled to provide the driving, starting, recuperation and the like to provide an operating torque from a higher-level controller.
- For vibration damping of the drive train by means of Elektronnasch ine is a state controller provided. This regulates a compensating moment of the electric machine on the electric machine, which torsional vibrations at the output of the torque transmission device, for example at the
- Compensated input shaft or in other words, the damping or the frequencies of the entire system of the drive train by means of shifting the vibration eigenvalues changed.
- non-detectable rotational characteristics of the drive train are determined as feedback state variables of the state controller by means of at least one observer, who determines the reconstructed rotational characteristics of the at least one flywheel from detected rotational speeds or rotational angles of the drive train.
- the reconstructed rotational characteristics are determined as a function of disturbance variables in the form of a load torque applied to an output of the torque transmission device and a torque induced on the output via the torque transmission device. From the rotational parameters reconstructed by means of the at least one observer, the compensating torque is determined by means of the state controller and the electric machine is controlled by means of this.
- the at least one observer who determines the reconstructed rotational characteristics of the at least one flywheel from detected rotational speeds or rotational angles of the drive train.
- the reconstructed rotational characteristics are determined as a function of disturbance variables in the form of a load torque applied to an output of the torque transmission device and a torque induced on the output via the torque transmission device.
- the compensating torque is determined by means of the
- an observer may be an observer to Luenberger or the like.
- Compensating moment This is then modulated on the operating torque of the electric machine for hybrid operation of the drive train, for example, added up.
- the provided rotational characteristics fed into the at least one observer can be the rotational angle and angular velocity of a flywheel,
- Differential angle and / or differential angular velocities between two flywheels for example, a primary flywheel mass and a secondary flywheel of a designed as a dual mass flywheel torque transmission device.
- the rotational characteristics can be determined directly by means of the
- Flywheel associated sensors for example, on the crankshaft, arranged on the transmission input shaft incremental angle sensors, resolvers or the like are detected.
- a detection of the rotational characteristics indirectly for example by means of other locations, kinematically connected to the flywheel sensors, for example via a gear ratio of the transmission with the transmission input shaft kinematically connected wheel speed sensors of the drive wheels or the like may be provided. From the rotational characteristics in the form of angles, differential angles, differential angular velocities and the like, the missing, ie not accessible, rotational values can be determined by means of an estimate.
- the behavior for example, by means of spring means coupled to one another flywheels, for example in the form of a torsional vibration damper such as a dual mass flywheel can not be linear.
- Transmission input shaft applied load torque and a torque induced via the torque transmitting device can be determined.
- an explicit estimate of the disturbance variables can be provided, for these externally for example, by means of a neuro-fuzzy system, so that they can be used as a known input from the observer.
- the disturbance variables can be decoupled from the rest of the system via, for example, an Unknown Input Observer or estimated as states, for example by means of a Pl observer.
- the estimation of the torque transmitted via the torque transmission device can be carried out by means of a neuro-fuzzy system.
- the rotational characteristics of the torque transmission device for example, the angular velocities of the flywheel masses of a dual mass flywheel serve as input variables, for example, the rotational speeds of the primary and secondary side.
- a harmonically-activated neural network may be provided.
- the advantage of using a HANN is that only the secondary speed is needed.
- the decoupling from the disturbances may be performed by an Unknown Input Observer, for example, wheel speeds of the drive quantities or the like.
- Perturbations are carried out by means of a proportional integral observer.
- the particular disturbing moment becomes
- Torque transmission device such as a dual-mass flywheel given as input to a conventional linear observer, who can estimate the load torque as state or decouple suitable. This observer then determines the missing rotational parameters. Not on
- a state controller that controls the required Kompensationsmo- ment for active vibration damping based on rotation angles and rotational angular velocities of the individual moments of inertia of the drive train of vibration damping, for example, torsional vibrations, such as harmonics of the engine, oscillations caused by torque jumps and the like, the vibration isolation of the drive train.
- Observer of the powertrain for example, for the reconstruction of the output of a torque transmission device such as a
- Dual mass flywheel or input of a transmission such as
- Transmission input shaft an observer for the internal combustion engine, in particular their engine torque is provided and used to control the state controller.
- the observation of the engine torque can also be observed in the observer
- a so-called X-mass oscillator is observed with the number x of oscillatory inertia rotating inertia masses with corresponding moments of inertia.
- X-mass oscillator From such an X-mass oscillator are already torsional vibration dampening torsional vibration damper, dual mass flywheels, optionally in
- Torque transmission devices for example, one-way flywheels arranged between the crankshaft and transmission input shaft torsional vibration dampers such as a built-in friction clutch torsional vibration damper comprises.
- Neuro-fuzzy system based on two speeds, preferably the primary and secondary speeds of a dual-mass flywheel,
- Pl-Observer Proportional integral observer
- HANN Harmonically activated neural network
- the powertrain observer may also be designed for non-linear systems such as X-mass oscillators.
- Powertrain in particular the torque transmission device such as
- Dual mass flywheel can be increased in an advantageous manner.
- the compensation torque of the electric machine advantageously an active damping can be proposed, which allows a simple integration of the vibration damping, for example as a subordinate controller, without any involvement in the overall vehicle control is required.
- the state controller can allow a targeted adjustment of the damping and the rigidity of the system such as torque transmitting device and thus reduce the amplitudes in the resonance points of the drive train.
- the angles and angular velocities of the moments of inertia of the underlying X-mass oscillator and the load torque are estimated by an observer.
- both jumps of the electric motor and the vibration excitation by the internal combustion engine can be identified and damped by means of the two observers.
- the active damping by means of the electric machine, in particular by the connection of the state controller with an observer in particular to Luen- berger, a Kalman filter for determining the crankshaft torque or similar methods particularly advantageous.
- the current, high-resolution engine torque can be estimated.
- An extension of the observer to the estimate of a torque transfer device as a non-linear component may be advantageous.
- the engine torque for example the frequency behavior thereof, can be determined from at least one rotational vibration-relevant variable of the internal combustion engine, for example a position of the load lever, top dead center (TDC) and / or the like, and as an input variable for the precontrol of the engine torque, for example that deviating from a mean torque Frequency behavior in which at least one observer is used.
- at least one rotational vibration-relevant variable of the internal combustion engine for example a position of the load lever, top dead center (TDC) and / or the like
- TDC top dead center
- Torque transmission device such as dual-mass flywheel reduced observer of the X-mass oscillator can be combined. This may possibly omit nonlinearities of the torque transmission device. Alternatively or additionally, a state of the torque transmission device which is only detected stationary in this case can be overcome by the nonlinearities of the torque transmission device, for example in tabular form in FIG.
- TDC top dead center
- Figure 1 is a block diagram of a powertrain with active vibration damping in various embodiments
- FIG. 2 shows a block diagram for clarifying a reconstructed engine torque transmitted via a torque transmission device
- Figure 3 is a block diagram illustrating a controller
- FIG. 1 shows the block diagram 1 with the drive train 2 shown schematically.
- the flywheel masses 3, 5, 9 form an X-mass oscillator with three masses, wherein the flywheel mass 3 is connected to the moment of inertia J i with the crankshaft of the internal combustion engine.
- the flywheel 5 with the moment of inertia J 2 is rotationally coupled by means of the spring device 7 and the friction device 8 with the flywheel 3 and forms the torque transmission Device 4 in the form of a dual mass flywheel.
- the torque transmission device 4 is rotationally coupled by means of the output 1 1, for example with a transmission input shaft of a transmission or the like and transmits the output torque M a b to the transmission input shaft.
- the flywheel 5 is rotationally coupled to the rotor of the electric machine 6 or formed from this.
- the electric machine 6 forms with the internal combustion engine the hybrid drive of the vehicle, optionally starts the internal combustion engine and recuperates during braking operations of the vehicle mechanical energy into electrical energy.
- the internal combustion engine the hybrid drive of the vehicle, optionally starts the internal combustion engine and recuperates during braking operations of the vehicle mechanical energy into electrical energy.
- Electric machine 6 by means of the operating torque M b0 ost controlled by a total control of the vehicle. Of the overall control is also the
- the state controller 12 determines the compensation torque M reg i e r, which ost on the operating torque M b0
- the active vibration damping by the electric machine 6 is independent of the overall control of the vehicle and can therefore as Additional module in essence for all hybrid powertrains made available, if necessary, also be retrofitted.
- the state controller 12 is returned with state variables such as detectable or reconstructed rotational characteristics of the drive train 2, for example, rotation angles ⁇ , q> 2, ⁇ 3, rotational angular velocities ⁇ , Ü) 2, ⁇ 3 and the like
- Observer 13, 14, 15 is shown in the form of several embodiments.
- At least the observer 13 serves
- the electric machine 6 is identified by means of predetermined current variables I, the rotational angle q> 2 or the like and the reconstructed electric machine torque M em , r is determined.
- the optionally present nonlinearity of the torque transmission device 4 is imaged in the observer 14.
- the reconstructed engine torque Mvm.r by means of a middle, for example, via CAN bus
- Motor torque M vm , m by estimation, a neuro-fuzzy system, a Kalmann filter or the like can be determined.
- the observer 13 and the moments taken into account as disturbance variables in the observer 14 are omitted in the form of the induced moment M in d and the load moment M
- As t are identified by means of the moment of inertia J 3 associated rotational characteristics, for example in the form of rotation angle q> 3 and / or rotational angular velocities 003 and decoupled or estimated.
- the observer 14 can be embodied, for example, as Unknown Input Pbserver or Pl observer.
- FIG. 2 shows, with reference to block diagram 1 of FIG. 1, the block diagram 16, which schematically illustrates the identification of the torque transmission device 4 designed as a dual mass flywheel and the reconstruction of the torque M in d induced on the output 11.
- the observer's reference model 17 uses the difference angles ⁇ 2 and the differential angular velocities ⁇ 00 12 between the flywheel masses 3, 5.
- a linearization is achieved by using in the reference model 17 a set of local moduli 18, 19,... That characterize the system properties of the torque transmission device 4. ... 20 according to the equation
- Weighting functions ⁇ , ⁇ 2 , ... ⁇ means of the input variables of the speed oo 2 of the flywheel 5 and the differential angle ⁇ 2 of the two flywheel masses 3, 5.
- Weighting functions ⁇ , ⁇ 2 , ... ⁇ means of the input variables of the speed oo 2 of the flywheel 5 and the differential angle ⁇ 2 of the two flywheel masses 3, 5.
- ⁇ , ⁇ 2 , ... ⁇ means of the input variables of the speed oo 2 of the flywheel 5 and the differential angle ⁇ 2 of the two flywheel masses 3, 5.
- Torque transmission device i ⁇ W 10 + w i, l " ⁇ 1 + w i, 2 * u 2 + W 3 ⁇ U l 2 + W i A ' " 2 2 + w i, S ' u l ' ⁇ 2 with the Input values ui, u 2 , for example, the difference angles A9i 2 and the Differenzwinkelgeschwindigkeieten ⁇ 2 ( Figure 2) and parameterization factors Wi, o, Wi, i, Wi, 2 ,. , .Wi , 5 are based.
- FIG. 3 shows the block diagram 21, in which the observer 14a identifies the non-linearly behaving drive train and reconstruction of its reconstructed rotational characteristics as a linear observer in various ways, possibly due to the torque transmission device 4a
- the inputs of the observer 14a are the electric machine torque M em formed in the block 23 from the operating torque M b0 east and the compensation torque Mreg.
- the non-linear estimation takes over the neuro-fuzzy system 22, which uses the rotational angular velocities ⁇ , oo as input variables 2 of the flywheel masses of the torque transmission device, ie the primary and secondary side of a dual mass flywheel processed.
- the state controller 12a generates from the rotational characteristics of the observer 14a corresponding to the state controller 12 and the observer 14 of Figure 1, the compensation torque M reg i e r-
- the transmitted via the torque transfer device 4a engine torque M V km as Disturbance input identified and supplied as an input to the observer 14a.
- a corresponding parameterization of the state controller 12a allows a free input of system properties, for example, frequencies,
- a harmonically activated neural network can be trained. This is preferably done offline, that is, for example, before the use of active vibration damping for each
- a secondary-side rotational characteristic for example the secondary-side rotational speed of a dual-mass flywheel, is sufficient as the input variable for the HANN.
- Unknown input variables in the Unknown Input upper server serve to decouple the disturbance variables on the two output side rotational parameters, for example the secondary-side rotational speed and a wheel rotational speed of the drive wheels.
- the linear observer 14a may be interpreted as a Pl-observer according to an unknown-input observer.
- the disturbance variables are estimated as states.
- Torque transmission device a torque transmission device
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Hybrid Electric Vehicles (AREA)
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Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2017524045A JP2017537830A (ja) | 2014-11-07 | 2015-10-08 | 電気機械を用いたドライブトレーンの振動減衰方法 |
CN201580060652.7A CN107074240B (zh) | 2014-11-07 | 2015-10-08 | 用于借助于电机对动力传动系进行振动衰减的方法 |
DE112015007008.7T DE112015007008A5 (de) | 2014-11-07 | 2015-10-08 | Verfahren zur Schwingungsdämpfung eines Antriebsstrangs mittels einer Elektromaschine |
US15/520,292 US10300920B2 (en) | 2014-11-07 | 2015-10-08 | Method for vibration damping of a drive train by means of an electric machine |
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DE102014222779.8 | 2014-11-07 | ||
DE102014222779.8A DE102014222779A1 (de) | 2014-11-07 | 2014-11-07 | Verfahren zur Schwingungsdämpfung eines Antriebsstrangs mittels einer Elektromaschine |
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US (1) | US10300920B2 (de) |
JP (1) | JP2017537830A (de) |
CN (1) | CN107074240B (de) |
DE (2) | DE102014222779A1 (de) |
WO (1) | WO2016070876A1 (de) |
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Also Published As
Publication number | Publication date |
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JP2017537830A (ja) | 2017-12-21 |
US10300920B2 (en) | 2019-05-28 |
US20170334448A1 (en) | 2017-11-23 |
DE112015007008A5 (de) | 2018-07-26 |
CN107074240A (zh) | 2017-08-18 |
CN107074240B (zh) | 2020-06-30 |
DE102014222779A1 (de) | 2016-05-12 |
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