CN103183022B - Torque control method and the system of hybrid vehicle electricity idling - Google Patents

Torque control method and the system of hybrid vehicle electricity idling Download PDF

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Publication number
CN103183022B
CN103183022B CN201110456957.3A CN201110456957A CN103183022B CN 103183022 B CN103183022 B CN 103183022B CN 201110456957 A CN201110456957 A CN 201110456957A CN 103183022 B CN103183022 B CN 103183022B
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motor
moment
shelves
feed
idle
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CN103183022A (en
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马成杰
周宇星
邱国茂
陈森涛
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SAIC Motor Corp Ltd
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SAIC Motor Corp Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles

Abstract

The invention provides the idle torque control method of a kind of motor of hybrid power automobile. The method comprises and judges whether motor enters idle pattern; In the situation that motor enters idle pattern, judge whether motor enters the idle pattern of motor by automatic start-up mode; And in the situation that motor enters the idle pattern of motor by automatic start-up mode, according to the gear that enters automatic start-up mode, feed-forward moment is set, not the in the situation that of entering the idle pattern of motor by automatic start-up mode at motor, the feed-forward moment when feed-forward moment is set is driving pattern. The present invention also provides corresponding system. Method of the present invention or system can effectively be controlled the moment of motor when idle.

Description

Torque control method and the system of hybrid vehicle electricity idling
Technical field
The invention belongs to hybrid vehicle control technology field, relate in particular to hybrid vehicle and enter motor idling fortuneTorque Control when row.
Background technology
With automatic gear-box and there is the idle hybrid vehicle of motor, there is no the feelings of power stage at engineLow or the power of battery in condition incision gear shift position, battery SOC (state-of-charge) can trigger automatic startup when low. In the time that this automatically starts asMeet the idle condition of motor that enters, automobile just can enter the idle pattern of motor. How to the idle mould of motorMoment under formula is controlled, and is one of problem of studying of industry.
Summary of the invention
In view of this, the object of the present invention is to provide the idle moment of torsion controlling party of a kind of motor of hybrid power automobileMethod. The method comprises and judges whether motor enters idle pattern; In the situation that motor enters idle pattern, judgementWhether motor enters the idle pattern of motor by automatic start-up mode; And it is idle to enter motor at motor by automatic start-up modeIn the situation of speed running mode, according to the gear that enters automatic start-up mode, feed-forward moment being set, is not by oneself at motorMoving start-up mode enters in the situation of the idle pattern of motor, the feed-forward when feed-forward moment is set is driving patternMoment, the corresponding gear of its middle rolling car pattern is D shelves.
Preferably, the method for the invention also comprises acquisition feed-forward moment correction value. Preferably, obtain feed-forwardMoment correction value comprises according to predefined condition judgment whether being started by hybrid controller order engine controllerWhether oil spout igniting, after carrying out oil spout igniting, trampled and the different output torques of engine are set not according to throttleWith coefficient, thereby and the output torque that this coefficient is multiplied by engine is obtained to feed-forward moment correction value.
Preferably, described method also comprises the rotating speed of target idle according to predefined motor and actual motorThe difference of rotating speed obtains PID control moment.
Preferably, described method further comprises that, according to set feed-forward moment, described feed-forward moment is repaiiedOn the occasion of and PID control moment obtain motor idle control output torque.
Preferably, the gear that described basis enters automatic start-up mode arranges feed-forward moment and comprises whether judging motorTriggering by R shelves the idle pattern that enters, is, the in the situation that of entering idle pattern with the triggering of R shelves, forward direction to be set at motorFeedback moment is the feed-forward moment of R shelves, is not the in the situation that of entering idle pattern with the triggering of R shelves at motor, judgementWhether motor triggers by P shelves or N shelves the idle pattern that enters, and is to trigger with P shelves or N shelves the idle pattern that enters at motorSituation under, it is the feed-forward moment of P shelves or N shelves that feed-forward moment is set, and is not to touch with P shelves or N shelves at motorSend out and enter in the situation of idle pattern, it is the feed-forward moment of D shelves that feed-forward moment is set.
The present invention also provides a kind of motor of hybrid power automobile idle torque control system, and described system comprises useIn judging whether motor enters the first judge module of idle pattern, be electricity for the judged result at the first judge moduleMachine enters in the situation of idle pattern, judges whether motor enters of the idle pattern of motor by automatic start-up modeTwo judge modules are that motor enters the idle pattern of motor by automatic start-up mode for the result at the second judge moduleIn situation, according to the gear that enters automatic start-up mode, feed-forward moment being set, is motor in the result of the second judge moduleNot to be entered in the situation of the idle pattern of motor by automatic start-up mode, when feed-forward moment is set is driving patternThe moment of feed-forward moment arranges module.
Preferably, system of the present invention also comprise for according to predefined condition judgment whether by hybrid powerControl order engine controller commencement of fuel injection igniting, after carrying out oil spout igniting, whether trampled according to throttle andThe different output torques of engine are set different coefficients, thereby and this coefficient are multiplied by before the output torque acquisition of engineTo the correction value computing unit of feedback moment correction value.
Preferably, system of the present invention also comprises the rotating speed of target idle according to predefined motor and realityThe control moment that the difference of the motor speed on border obtains PID control moment obtains module.
Preferably, system of the present invention also comprises the correction value of calculating according to correction value computing unit, controlSquare obtains module and obtains PID control moment, and moment arranges the set feed-forward moment acquisition motor idling of moduleThe control output torque acquisition module of the control output torque of operation.
Preferably, in system of the present invention, described moment arrange module comprise judge motor whether by R shelves trigger intoEntering the first judging unit of idle pattern, is that motor is triggered and entered by R shelves in the judged result of described the first judging unitIn the situation of idle pattern, it is the first moment setting unit of R shelves feed-forward moment that feed-forward moment is set, at electricityMachine is not to trigger and enter in the situation of idle pattern with R shelves, judges whether motor is triggered and entered idling fortune by P shelves or N shelvesThe second judging unit of row mode, and be that motor is to enter idle with P shelves or the triggering of N shelves in the judged result of the second judging unitIn the situation of speed running mode, it is the feed-forward moment of P shelves or N shelves that feed-forward moment is set, and at the second judgement listThe judged result of unit is to trigger and enter in the situation of idle pattern with P shelves or N shelves, feed-forward moment is set is D shelvesThe second moment setting unit of feed-forward moment.
According to method of the present invention and/or system, can effectively control the moment of motor when idle.
Brief description of the drawings
Fig. 1 is the flow chart of the torque control method of hybrid vehicle electricity idling of the present invention.
Fig. 2 is the schematic diagram of selecting moment output according to switch.
Fig. 3 is the schematic diagram of the idle torque control system of motor of hybrid power automobile according to the present invention.
Fig. 4 has further provided moment and has arranged the schematic diagram of module 34.
Fig. 5 is according to the output torque of motor of the present invention, engine output torque, engine speed and mixedClose the relativeness figure of dynamic Control state.
Detailed description of the invention
Further illustrate the torque control method under the idle pattern of motor of the present invention below in conjunction with accompanying drawing.
In description of the invention, term " motor idle (below claiming electric idling) " refers to by motor output torqueTo drive automobile and engine there is no oil spout igniting; Or mainly by motor output torque to drive automobile, but engine nowCommencement of fuel injection is lighted a fire and is had moment output while engine also not steady to hybrid controller (HCU) transmission engineThe signal of fixed work.
Mainly drive automobile by motor output torque, commencement of fuel injection igniting of engine has moment output, but also to mixedClose the signal of steady operation of engine of power controller HCU feedback. Term " electric idling rotating speed of target " can be according to vapourCar freely which kind of pattern enters electric idling and sets respectively. In the present invention, automobile can enter electric idling by automatic start-up mode,Or by entering electric idling in D shelves driving pattern. It is zero by engine from rotating speed that term " start-up mode automatically " refers to motorDrag to idling speed. Term " driving pattern " refers to automobile with the speed operation higher than certain value (such as 30 kilometer/meter)Pattern.
Say simply, first the torque control method of hybrid power system electricity idling of the present invention controls electric idling mouldThe selection of moment under formula, and then selected moment is revised.
Fig. 1 is the flow chart of the torque control method of hybrid vehicle electricity idling of the present invention. Start step itAfter, enter step 10, judge whether motor has entered the idle pattern of motor, if yes then enter step 12, otherwise finish.In step 12, judge whether motor enters the idle pattern of motor from automatic start-up mode, if yes then enter step 14, noEnter step 46. In the present invention, if automobile is not to enter the idle pattern of motor from automatic start-up mode, be fromDriving pattern enters the idle pattern of motor. In the situation that automobile enters the idle pattern of motor from driving pattern, asShown in step 46, forward direction moment selector switch is set, so that moment output is arranged on according to driving pattern output feed-forwardMoment; Automobile is with the feed-forward moment operation of driving pattern, as shown in step 48 subsequently. Enter from automatic start-up mode at automobileEnter in the situation of the idle pattern of motor, further judge whether it is to be switched to R shelves to trigger automatic startup mould in step 14Formula and enter the idle pattern of motor; If so, enter step 16, otherwise enter step 15. Triggering and automatically opening with R shelvesDynamic model formula and entering in the situation of the idle pattern of motor, arranges forward direction moment selector switch, makes moment output loop quiltBe arranged on according to R shelves output feed-forward moment; Automobile is with the feed-forward moment operation of R shelves, as shown in step 18 subsequently. AsFruit is not to trigger automatic start-up mode and enter the idle pattern of motor with R shelves, judges whether it is to trigger with P shelves or N shelvesThereby engine enters the idle pattern of motor, if so, enter step 26, otherwise enter step 36. In step 26, establishPut forward direction moment selector switch, moment output loop is configured to according to P shelves or N shelves output feed-forward moment; SubsequentlyAutomobile is with the feed-forward moment operation of P shelves or N shelves, as shown in step 28. In step 36, forward direction moment selector switch is set,Moment output loop is configured to according to D shelves output feed-forward moment; Automobile is with the feed-forward moment fortune of D shelves subsequentlyOK, as shown in step 38. As mentioned above, judged automobile be how to enter the idle pattern of motor after, just according to shouldJudged result is exported corresponding moment, thereby has effectively reached the Torque Control under the idle state of motor.
In description as above, the R shelves that are switched to of meaning shown in step 14 enter electric idle to trigger automatic start-up modeFast mode refers to autostop pattern (that is, engine speed is zero, the pattern of no-output power), and human pilot switches shelvesThereby automatic start-up mode is triggered to R shelves in position. After automatic start-up mode, motor just enters idle state. Step 15Shown in be switched to P shelves or the N shelves of meaning enter electric idling mode to trigger automatic start-up mode and refer at autostop mouldWhen formula, thereby switching gear, human pilot triggers automatic start-up mode to P shelves or N shelves. Equally, automatically, start-up mode completes itAfter, just enter electric idling mode.
According to the present invention, the feed-forward moment in each embodiment can obtain according to the motor input speed table setting in advanceArrive. Motor speed table has provided the motor speed of input and the corresponding relation of feed-forward moment, it should be noted that identical electricityFeed-forward moment corresponding to machine rotating speed possibility, as understood by those skilled in the art, the motor speed of input and frontCorresponding relation to feedback moment also depends on different gears.
According to an example of the present invention, moment selector switch can be set corresponding to select according to different judged resultsMoment loop. Fig. 2 has provided the signal of selecting moment output according to switch. In the time that switch is arranged on diverse location, different powerSquare output is selected. As directed, in the time entering into step 46 according to the judgement of step 12, just establish by turn on-switch 204Put forward direction moment, that is according to driving pattern output feed-forward moment, when the judged result according to step 14 enters step 16Time, just by turn on-switch 201, forward direction moment is set, that is according to R shelves output feed-forward moment, when according to step 15When judged result enters step 26, just by turn on-switch 202, forward direction moment is set, that is according to before R shelves or the output of N shelvesTo feedback moment, in the time entering step 36 according to the judged result of step 15, just by turn on-switch 203, forward force is setSquare, that is according to D shelves output feed-forward moment.
Further, also comprise to selected according to the torque control method of hybrid vehicle of the present invention electricity idlingThe moment of selecting is revised. The correction of moment is comprised and obtains moment correction value and according to this value, engine output torque enteredRow is revised.
How to obtain moment correction value at this formal specification with example: in the idle pattern of motor, judge whether byOil spout igniting when hybrid controller HCU order engine controller is opened. After the igniting of engine commencement of fuel injection, basis respectivelyWhether driver steps on the gas and the different output torques of engine are set different coefficients, this coefficient is multiplied by the output of engineMoment, just obtains feed-forward moment correction value. In this example, judge whether by hybrid controller HCU order engineWhen controller leaves, whether oil spout igniting can lower than calibration value, the battery set can be with discharge power according to state-of-charge SOCThe no time of moving lower than the calibration value of setting or at electric idling mode has been greater than the conditions such as the calibration value of setting.
In addition, carry out PID control according to the difference of the idle rotating speed of target motor and actual motor speed, to calculateGo out PID control moment. At this, PID controls and refers to ratio, integration, differential control. PID control moment is target electricity idlingThe difference of rotating speed and actual motor speed not with PID control in proportional, integration item, differential term product and.
Just can draw electricity according to the forward direction torque-feedback, forward direction moment correction value and the PID control moment sum that obtainThe control output torque that machine is idle.
Fig. 3 shows the schematic diagram of the idle torque control system of motor of hybrid power automobile according to the present invention.As shown in the figure, this system comprises the first judge module 30, the second judge modules 32, and moment arranges module 34. The first judgementModule 30 judges whether motor enters idle pattern, and the second judge module 32 in the judged result of the first judge module 30 isMotor enters in the situation of idle pattern, judges whether motor enters the idle pattern of motor by automatic start-up mode,Be that motor enters motor idling by automatic start-up mode and transports and moment arranges module 34 in the judged result of the second judge module 32In the situation of row mode, according to the gear that enters automatic start-up mode, feed-forward moment is set, at sentencing of the second judge moduleDisconnected result is that motor is not to be entered in the situation of the idle pattern of motor by automatic start-up mode, feed-forward moment is set and isFeed-forward moment when driving pattern. Alternatively, this system also comprises correction value computing unit 36, with according to predefinedWhether condition judgment is lighted a fire by hybrid controller order engine controller commencement of fuel injection, after carrying out oil spout igniting,Whether trampled and the different output torques of engine are set different coefficients according to throttle, and this coefficient is multiplied by engineThereby output torque obtain feed-forward moment correction value. Described system also can comprise according to predefined motor idling fortuneThe control moment that the difference of the rotating speed of target of row and actual motor speed obtains PID control moment obtains module 38. Described systemAlso comprise and control output torque acquisition module 40, the correction value that it calculates according to correction value computing unit 36, control moment obtainsThe control moment that module 38 obtains, and moment arranges the set control output torque of module 34 and obtains motor idling fortuneControl output torque when row.
Fig. 4 has further provided moment and has arranged the schematic diagram of module 34. As shown in the figure, moment arranges module 34 and comprises firstJudging unit 340, the first moment setting unit 342, the second judging units 344, and the second moment setting unit 346. FirstJudging unit 340 judges that whether motor is triggered and entered idle pattern by R shelves, in its judged result for to be touched by R shelves for motorSend out and enter in the situation of idle pattern, it is R shelves feed-forward power that the first moment setting unit 342 arranges feed-forward momentSquare; Be that motor is not to trigger with R shelves the situation that enters idle pattern in the judged result of described the first judging unit 340Under, the second judging unit 344 judges whether motor triggers by P shelves or N shelves the idle pattern that enters, and is electricity in its judged resultMachine is to trigger and enter in the situation of idle pattern with P shelves or N shelves, and the second moment setting unit 346 arranges feed-forward powerSquare is the feed-forward moment of P shelves or N shelves, and the judged result of the second judging unit 344 for trigger with P shelves or N shelves intoEnter in the situation of idle pattern, the second moment setting unit 346 arranges the feed-forward power that feed-forward moment is D shelvesSquare.
Fig. 5 is according to the output torque of motor of the present invention, engine output torque, engine speed and mixedClose the relativeness figure of dynamic Control state. What the longitudinal axis of Fig. 5 was illustrated is motor speed, it should be noted that, the longitudinal axis of Fig. 5 is sameShi Ye has represented the output torque of motor, does not just show with the form of concrete numerical value. In Fig. 5, first area 42 correspondencesMotor speed closed loop control, in this region, engine oil-break or engine commencement of fuel injection but also not to hybrid power controlThe signal of steady operation of device feedback engine processed. In first area 42, motor be output as selected feed-forward moment,Moment correction value and PID control moment sum (as shown in curve 420). The corresponding engine of second area 44 enters moment closed loopRegion, in this region, has exited electric idle pattern, that is has fought to hybrid controller at engine oil spout pointThe signal of steady operation of feedback engine, automobile has exited electric idle pattern.
In the present invention, the engine sending to the hybrid controller HCU signal of steady operation all refers to: startMachine controller has completed the starting control of engine open loop and has entered torque structure control model, the starting of described engine open loopTo be mean engine carry out the moment of open loop ground control engine by default air inflow, electric fiery angle, oil spout in control, described in enter momentStructure control pattern refers to and has started the machine power of starting that air inflow, the angle of ignition, the oil spout control of engine closed-loop satisfies the demandsSquare.
According to the idle torque control method of motor of the present invention and corresponding system, can effectively control electricityMoment when machine is idle.

Claims (11)

1. the idle torque control method of motor of hybrid power automobile, is characterized in that, described method comprises:
Judge whether motor enters idle pattern;
In the situation that motor enters idle pattern, judge whether motor enters motor by automatic start-up mode idlePattern; And
In the situation that motor enters the idle pattern of motor by automatic start-up mode, according to the shelves that enter automatic start-up modePosition arranges feed-forward moment, is not the in the situation that of entering the idle pattern of motor by automatic start-up mode at motor, arrangesFeed-forward moment when feed-forward moment is driving pattern.
2. torque control method according to claim 1, is characterized in that, described method also comprises the feed-forward power that obtainsSquare correction value.
3. torque control method according to claim 2, is characterized in that, obtains described feed-forward moment correction value bagDraw together:
Judge whether to be lighted a fire by hybrid controller order engine controller commencement of fuel injection,
After carrying out oil spout igniting, whether trampled and the different output torques of engine are set and different are according to throttleNumber, and
Thereby the output torque that this coefficient is multiplied by engine obtains feed-forward moment correction value.
4. torque control method according to claim 2, is characterized in that, described method also comprises according to predefinedThe difference of the rotating speed of target that motor is idle and actual motor speed obtains PID control moment.
5. torque control method according to claim 4, is characterized in that, described method further comprises according to setFeed-forward moment, described feed-forward moment correction value and PID control moment to obtain the idle control of motor defeatedGo out moment.
6. torque control method according to claim 1, is characterized in that, described basis enters the shelves of automatic start-up modePosition arranges feed-forward moment and comprises:
Judge whether motor triggers by R shelves the idle pattern that enters,
, the in the situation that of entering idle pattern with the triggering of R shelves, the feed-forward that feed-forward moment is R shelves to be set at motorMoment,
To trigger enter idle pattern in the situation that with R shelves at motor, judge motor whether by P shelves or N shelves trigger intoEnter idle pattern,
That the in the situation that of entering idle pattern with P shelves or the triggering of N shelves, it is P shelves or N shelves that feed-forward moment is set at motorFeed-forward moment, and
Not to trigger enter idle pattern in the situation that with P shelves or N shelves at motor, feed-forward moment is set is D shelvesFeed-forward moment.
7. the idle torque control system of motor of hybrid power automobile, is characterized in that, described control system comprises:
The first judge module, for judging whether motor enters idle pattern,
The second judge module, for being that motor enters idle pattern in the judged result of the first judge module,Judge whether motor enters the idle pattern of motor by automatic start-up mode,
Moment arranges module, is that motor enters motor idling by automatic start-up mode for the judged result at the second judge moduleIn the situation of operational mode, according to the gear that enters automatic start-up mode, feed-forward moment is set, at the second judge moduleJudged result is that motor is not to be entered in the situation of the idle pattern of motor by automatic start-up mode, and feed-forward moment is setFeed-forward moment during for driving pattern.
8. system according to claim 7, is characterized in that, described system also comprises for judging whether by hybrid powerControl order engine controller commencement of fuel injection igniting, after carrying out oil spout igniting, whether trampled according to throttle andThe different output torques of engine are set different coefficients, thereby and this coefficient are multiplied by before the output torque acquisition of engineTo the correction value computing unit of feedback moment correction value.
9. system according to claim 8, is characterized in that, also comprises the order idle according to predefined motorMark rotating speed and the difference of actual motor speed obtain the control moment acquisition module of PID control moment.
10. system according to claim 9, is characterized in that, described system also comprises according to correction value computing unit instituteThe correction value of calculating, control moment obtains module and obtains PID control moment, and moment that the set forward direction of module is set is anti-Feedback moment obtains the control output torque acquisition module of the idle control output torque of motor.
11. systems according to claim 7, is characterized in that, described moment arranges module and comprises:
Judge whether motor triggers by R shelves the first judging unit that enters idle pattern,
Be that motor is triggered and entered idle pattern by R shelves in the judged result of described the first judging unit, arrangeFeed-forward moment is the first moment setting unit of R shelves feed-forward moment,
Be that motor is not to trigger and enter idle pattern with R shelves in the judged result of described the first judging unit,Judge whether motor triggers by P shelves or N shelves the second judging unit that enters idle pattern, and
Be that motor is to trigger and enter idle pattern with P shelves or N shelves in the judged result of the second judging unit, establishPutting feed-forward moment is the feed-forward moment of P shelves or N shelves, and is with P shelves or N in the judged result of the second judging unitShelves trigger and enter in the situation of idle pattern, and it is the second moment of the feed-forward moment of D shelves that feed-forward moment is setSetting unit.
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