CN103696857B - A kind of electronic throttle valve device for range extender of electric vehicle and controlling method - Google Patents
A kind of electronic throttle valve device for range extender of electric vehicle and controlling method Download PDFInfo
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Abstract
For the active demand of electric motor car to distance increasing unit, the invention provides a kind of electronic throttle valve device for range extender of electric vehicle, comprise accelerator pedal position sensor, throttle position sensor, electronic throttle control unit ECU, closure final controlling element, motor and electronic throttle.The present invention also provides a controlling method adopting apparatus of the present invention: step one, obtains the running parameter of vehicle; The rotating speed of motor that step 2 measuring and calculating vehicle is current and the aperture of electronic throttle, judge that current being in of motor shuts down working state, startup working state, idling work state or power generation operation state; Step 3, according to four kinds of working staties, controls the aperture size of electronic throttle: step 4, according to four kinds of working staties, carries out ignition advance angle to motor.Useful technique effect of the present invention is: this product and controlling method pattern simple and reliable; The power character of electric motor car, Economy, course continuation mileage can be improved.
Description
Technical field
The invention belongs to electric vehicle manufacturing technology field, be specifically related to the Electronic Throttle Control technology of range extender of electric vehicle, be specially a kind of electronic throttle valve device for range extender of electric vehicle and controlling method.
Background technique
Energy-conserving and environment-protective are one of major techniques of automotive technology development.From early 1990s, countries in the world, have all dropped into substantial contribution in electric vehicle research and development, and are proposed various electric vehicle.In recent years, stroke-increasing electric automobile becomes the focus of research gradually.Extended-range electric vehicle is a kind of special hybrid vehicle.It mainly adopts electromotion system, and band generator set be made up of mini engine, generator, rectifying device of simultaneously holding concurrently, is called distance increasing unit.This vehicle, the electric power that general battery carries can ensure the normal driving in certain mileage.Once electricity is not enough, distance increasing unit entry into service, is battery charging as generator, adds the course continuation mileage of vehicle.The technology mode of extended-range electric vehicle is simple and reliable, and its longer continual mileage can reach the level of traditional vehicle substantially.And distance increasing unit electronic control technology, be one of core technology determining every key parameters such as extended-range electric vehicle power character, Economy, course continuation mileage.The Electronic Throttle Control of type range extender engine is the key technology determining distance increasing unit startability, generating Index For Steady-state, dynamic response index.The application of Electronic Throttle Control method on range extender system, achieve the correlation function requirement of extended-range electric vehicle car load to distance increasing unit, logic is concisely clear, software simulating practical simplicity.
Summary of the invention
For the active demand of electric motor car to distance increasing unit; the invention provides a kind of electronic throttle valve device for range extender of electric vehicle and controlling method; according to the requirement of vehicle management system, control distance increasing unit and start, shut down, export by specific voltage or electric current realization generating.Distance increasing unit energy source comes from motor, and when distance increasing unit carries out generating output, motor generally carries out permanent speed closed loop control, and output torque is with loaded self-adaptive, realizes the automatic control of air input of engine by air.
Concrete product structure and method are as follows successively:
For an electronic throttle valve device for range extender of electric vehicle, comprise accelerator pedal position sensor 1, throttle position sensor 2, electronic throttle control unit ECU3, closure final controlling element 4, motor 5 and electronic throttle 6; Electronic throttle 6 is arranged in motor 5, and is connected with electronic throttle control unit ECU3 by closure final controlling element 4; Motor 5 is provided with throttle position sensor 2, in order to the folding condition of real-time detected electrons closure 6; Electronic throttle control unit ECU3 is connected with automatic transmission electronic control unit with accelerator pedal position sensor 1, throttle position sensor 2, engine electronic control unit respectively; Accelerator pedal position sensor 1 passes to electronic throttle control unit ECU3 by needing the information of acceleration or deceleration, calculate corresponding best throttle position by electronic throttle control unit ECU3 again and send control command to sending control signal to closure final controlling element 4, electronic throttle 6 being reached by closure final controlling element 4 the best throttle opening position that electronic throttle control unit 3 calculates; In addition, electronic throttle control unit ECU3 obtains the real-time vehicle condition information of vehicle self and the real time position situation of electronic throttle 6 from engine electronic control unit, automatic transmission electronic control unit and throttle position sensor 2 respectively, the optimum position of electronic throttle 6 is constantly revised, makes the aperture of electronic throttle 6 reach the ideal position of vehicle traveling.
In addition, accelerator pedal position sensor 1, is made up of two contactless linear potentiometer sensors, and accelerator pedal position sensor 1 produces the voltage signal Input connection valve electronic control unit ECU3 that react accelerator travel size and rate of change;
By link rotatable mechanism 7, electronic throttle 6 and closure final controlling element 4 are interconnected;
The shaft of link rotatable mechanism 7 is vertically connected with quarter butt 10, left side limiting stopper 11 and right side limiting stopper 12 is respectively equipped with in quarter butt 10 moving direction, F shape bounding means 13 is provided with at the right-hand member of left side limiting stopper 11, F shape bounding means 13 moves left and right relative to left side limiting stopper 11, the shaft of F shape bounding means 13 is provided with successively the first position-limited lever 14 and the second position-limited lever 15 straight down, wherein, be connected with the right-hand member of left side limiting stopper 11 by the left side of a Returnning spring 9 by the first position-limited lever 14, be connected with the right-hand member of quarter butt 10 by the left side of another root Returnning spring 9 by the second position-limited lever 15, the bottom of the first position-limited lever 14 is lower than the top of quarter butt 10, namely by Returnning spring 9, link rotatable mechanism 7 is drawn round about, guarantee when having fault at electronic throttle control unit ECU3, the corner of the electronic throttle 6 be connected with link rotatable mechanism 7 can be returned to the equilibrium position jointly determined by two Returnning springs 9, guarantee that motor 5 can normally work.
Under original state, electronic throttle 6 is in equilibrium position under the effect of Returnning spring 9, when closure final controlling element 4 drive link rotating mechanism 7 is to left movement, when quarter butt 10 contacts with left side limiting stopper 11, namely reach the restraining position that link rotatable mechanism 7 runs left, now electronic throttle 6 is in full-gear; When closure final controlling element 4 drive link rotating mechanism 7 moves right, when quarter butt 10 contacts with right side limiting stopper 12, namely reach the restraining position that link rotatable mechanism 7 runs to the right, now electronic throttle 6 is in full-shut position; Electronic throttle 6 is provided with two throttle position sensor 2; The voltage signal that above-mentioned two throttle position sensor 2 export is inverse ratio with the aperture increase of electronic throttle 6, and the voltage signal sum that above-mentioned two throttle position sensor 2 export equals the power supply total voltage of throttle position sensor 2 all the time, realizes the mutual detection of two throttle position sensor 2 signals;
Closure final controlling element 4 is a control motor; The Driving Torque of closure final controlling element 4 and the dutycycle of pulse-width signal are directly proportional, and the sense of rotation of closure final controlling element 4 is controlled by the Returnning spring be connected with electronic throttle 6; When the dutycycle that closure final controlling element 4 receives is constant, when the resisting moment of the Returnning spring that the Driving Torque of closure final controlling element 4 is connected with same electronic throttle 6 keeps balancing, guarantee that the valve opening saving electronic throttle 6 is constant; When the dutycycle that closure final controlling element 4 receives increases, the driving moment of closure final controlling element 4 overcomes the resisting moment of Returnning spring, and the throttle opening of electronic throttle 6 increases; When the dutycycle that closure final controlling element 4 receives reduces, closure final controlling element 4 Driving Torque is less than the resisting moment of Returnning spring, and the throttle opening of electronic throttle 6 also reduces thereupon.
For a controlling method for the electronic throttle valve device of range extender of electric vehicle, specifically control by following step:
Step one: the running parameter being obtained vehicle by electronic throttle control unit ECU3: crankshaft-position signal, camshaft-position signal, actual throttle opening amount signal, boost pressure signal, intake air temperature signals and coolant temperature signal;
Step 2: calculate the current rotating speed of motor 5 of vehicle and the aperture of electronic throttle 6 according to the signal obtained in step one by electronic throttle control unit ECU3, judges that current being in of motor 5 shuts down working state, startup working state, idling work state or power generation operation state;
Step 3: the four kinds of working staties obtained according to step 2 judgement, go out corresponding target throttle aperture by following formulae discovery respectively, control the aperture size of electronic throttle 6:
3.1 shut down working state or start working state
By water temperature and the rotating speed of motor 5, determine the aperture size of electronic throttle 6;
Shut down working state or the electronic throttle target aperture ETC_SP started under working state is the functional value obtained by inquiring about a bivariate table, this bivariate table for independent variable, exports electronic throttle target aperture ETC_SP with water temperature and rotating speed;
ETC_SP=f (water temperature, rotating speed), electronic throttle target aperture ETC_SP are worth with the rising of water temperature and diminish, and be worth diminish with the rising of rotating speed;
3.2 idling work states
Idling work state comprises the basic aperture of idling, speed closed loop PID regulates aperture, and fan compensates, temperature correction;
Electronic throttle target aperture ETC_SP during idling is that the basic aperture ETC_SP_IS_BAS of idling and speed closed loop PID regulate aperture ETC_SP_IS_PID and fan and temperature correction ETC_SP_ADD_LOAD sum;
ETC_SP＝ETC_SP_IS_BAS+ETC_SP_IS_PID+ETC_SP_ADD_LOAD；
The basic aperture ETC_SP_IS_BAS of idling according to motor with or without air-conditioning, current driving parked state is classified, inquire about two one dimension tables under corresponding state respectively according to different states, namely the functional value obtained tabling look-up is added is the basic aperture ETC_SP_IS_BAS of idling.Two one dimension tables respectively with water temperature and intake temperature for independent variable, throttle opening value corresponding under exporting different water temperature and various inlet temperature respectively;
Speed closed loop PID regulates aperture ETC_SP_IS_PID to be the output quantity that the speed closed loop of electronic throttle control unit ECU3 under engine idle conditions controls, what this speed closed loop controlled employing is PID regulator, and its P entry value ETC_SP_IS_P, I entry value ETC_SP_IS_I and D entry value ETC_SP_IS_D adopt calibration scale to realize respectively; Wherein, the one dimension table that the calibration scale of P entry value ETC_SP_IS_P and I entry value ETC_SP_IS_I is all is independent variable with rotating speed deviation, namely the functional value checked in by inquiring about this one dimension table is the regulated quantity of the P entry value ETC_SP_IS_P of throttle opening and the regulated quantity of I entry value ETC_SP_IS_I; The one dimension table that the calibration scale of D entry value ETC_SP_IS_D is independent variable with the difference of current rotating speed deviation and last rotating speed deviation, by inquire about this one dimension table the functional value checked in namely be the regulated quantity of the D entry value ETC_SP_IS_D of throttle opening;
Electronic throttle control unit ECU3, by calculating the difference of the real-time actual speed of work at present setting speed and collection as rotating speed deviation, inquires about P item table and the I item table of PID regulator respectively; In addition, electronic throttle control unit ECU3 is by calculating the difference of current rotating speed deviation and last rotating speed deviation, the D item table of inquiry PID regulator, and obtain under n moment condition according to following algorithm, the electronic throttle target aperture ETC_SP of the electronic throttle 6 calculated by speed closed loop PID regulator:
ETC_SP_IS_I_SUM(n)＝ETC_SP_IS_I_SUM(n-1)+ETC_SP_IS_I(n)；
ETC_SP＝ETC_SP_IS_P+ETC_SP_IS_I_SUM+ETC_SP_IS_D；
Fan and temperature correction ETC_SP_ADD_LOAD are divided into fan load to compensate throttle opening correction ETC_SP_FAC_TIA two-part composition of ETC_SP_ADD_FAN and intake temperature;
Wherein fan load compensates according to there being fan-free, high low speed fan-status inquires about calibration value under each corresponding state, the compensation rate under the stable situation during this calibration value compensates as fan load; In addition, when fan-status to have between fan-free, high low speed fan under situation of change, fan load compensates an additional transient state fan load on the basis of stable state fan load compensation and compensates, and this transient state fan load compensates inquires about a calibration value in the fan-status change moment; In addition, transient state fan load compensates and will taper to null value by this calibration value by certain gradient;
The functional value that the one dimension table that the throttle opening correction ETC_SP_FAC_TIA of intake temperature take intake temperature as independent variable by inquiry obtains, this functional value is exactly the throttle opening correction ETC_SP_FAC_TIA of intake temperature;
3.3 power generation operation states
Power generation operation state is decided by the speed closed loop PID adjustment module based on generating rotating speed of target; Electronic throttle control unit ECU3 inputs to PID module according to the deviation of generate electricity rotating speed of target and actual speed and regulates, and final regulated quantity is the target open position ETC_SP_GE_PID of electronic throttle 6;
Its P entry value ETC_SP_GE_P, I entry value ETC_SP_GE_I and D entry value ETC_SP_GE_D adopt calibration scale to realize respectively; Wherein, the one dimension table that the calibration scale of P entry value ETC_SP_GE_P and I entry value ETC_SP_GE_I is all is independent variable with rotating speed deviation, namely the functional value checked in by inquiring about this one dimension table is the regulated quantity of the P entry value ETC_SP_GE_P of throttle opening and the regulated quantity of I entry value ETC_SP_GE_I; The one dimension table that the calibration scale of D entry value ETC_SP_GE_D is independent variable with the difference of current rotating speed deviation and last rotating speed deviation, by inquire about this one dimension table the functional value checked in namely be the regulated quantity of the D entry value ETC_SP_GE_D of throttle opening;
Electronic throttle control unit ECU3, by calculating the difference of the real-time actual speed of work at present setting speed and collection as rotating speed deviation, inquires about P item table and the I item table of PID regulator respectively; In addition, electronic throttle control unit ECU3 is by calculating the difference of current rotating speed deviation and last rotating speed deviation, the D item table of inquiry PID regulator, and obtain under n moment condition according to following algorithm, the electronic throttle target aperture ETC_SP of the electronic throttle 6 calculated by speed closed loop PID regulator:
ETC_SP_GE_I_SUM(n)＝ETC_SP_GE_I_SUM(n-1)+ETC_SP_GE_I(n)；
ETC_SP＝ETC_SP_GE_P+ETC_SP_GE_I_SUM+ETC_SP_GE_D；
Step 4: judge and four kinds of working staties obtaining according to step 2, by electronic throttle control unit ECU3, ignition advance angle is carried out to motor 5, the i.e. control on igniting opportunity of motor 5:
First, signal sampling is carried out to the current suction pressure of motor 5 and temperature, draw the best charge flow rate of motor 5 and corresponding motor 5 fuel injection quantity according to suction pressure, temperature and speed-density formula and air fuel ratio formulae discovery;
Subsequently, transient state oil spout compensation is carried out to the above-mentioned fuel injection quantity calculated, obtains final fuel injection quantity;
Finally the aperture size of electronic throttle 6 is coordinated to carry out oil spout by controlling motor 5 to electronic throttle control unit ECU3 by this numerical value.
Useful technique effect
This product and controlling method entry into service when electric vehicle electricity is not enough, and be charge in batteries as generator, add the course continuation mileage of electric vehicle.This product and controlling method pattern simple and reliable, substantially can reach the level of traditional vehicle at longer continual mileage.This product and controlling method, can improve the power character of electric motor car, Economy, course continuation mileage, and in addition, this product and controlling method optimize startability, generating Index For Steady-state, the dynamic response index of distance increasing unit.This product and controlling method achieve the correlation function requirement of extended-range electric vehicle car load to distance increasing unit, and logic is concisely clear, software simulating practical simplicity.
Accompanying drawing explanation
Fig. 1 is the logic diagram of circuit of this product.
Fig. 2 is the mechanical structure sketch of electronic throttle in Fig. 1.
Fig. 3 is the corresponding relation sketch of engine speed after adopting this product and controlling method and electronic throttle target aperture ETC_SP.
Sequence number in figure is: accelerator pedal position sensor 1, throttle position sensor 2, electronic throttle control unit ECU3, closure final controlling element 4, motor 5, electronic throttle 6, link rotatable mechanism 7, Returnning spring 9, quarter butt 10, left side limiting stopper 11, right side limiting stopper 12, F shape bounding means 13, first position-limited lever 14, second position-limited lever 15.
Embodiment
Now be described with reference to the accompanying drawings structural feature of the present invention.
See Fig. 1, a kind of electronic throttle valve device for range extender of electric vehicle, comprises accelerator pedal position sensor 1, throttle position sensor 2, electronic throttle control unit ECU3, closure final controlling element 4, motor 5 and electronic throttle 6; Electronic throttle 6 is arranged in motor 5, and is connected with electronic throttle control unit ECU3 by closure final controlling element 4; Motor 5 is provided with throttle position sensor 2, in order to the folding condition of real-time detected electrons closure 6; Electronic throttle control unit ECU3 is connected with automatic transmission electronic control unit with accelerator pedal position sensor 1, throttle position sensor 2, engine electronic control unit respectively; Accelerator pedal position sensor 1 passes to electronic throttle control unit ECU3 by needing the information of acceleration or deceleration, calculate corresponding best throttle position by electronic throttle control unit ECU3 again and send control command to sending control signal to closure final controlling element 4, electronic throttle 6 being reached by closure final controlling element 4 the best throttle opening position that electronic throttle control unit 3 calculates; In addition, electronic throttle control unit ECU3 obtains the real-time vehicle condition information of vehicle self and the real time position situation of electronic throttle 6 from engine electronic control unit, automatic transmission electronic control unit and throttle position sensor 2 respectively, the optimum position of electronic throttle 6 is constantly revised, makes the aperture of electronic throttle 6 reach the ideal position of vehicle traveling; See Fig. 2, accelerator pedal position sensor 1, is made up of two contactless linear potentiometer sensors, and accelerator pedal position sensor 1 produces the voltage signal Input connection valve electronic control unit ECU3 that react accelerator travel size and rate of change;
By link rotatable mechanism 7, electronic throttle 6 and closure final controlling element 4 are interconnected, the shaft of link rotatable mechanism 7 is vertically connected with quarter butt 10, left side limiting stopper 11 and right side limiting stopper 12 is respectively equipped with in quarter butt 10 moving direction, F shape bounding means 13 is provided with at the right-hand member of left side limiting stopper 11, F shape bounding means 13 moves left and right relative to left side limiting stopper 11, the shaft of F shape bounding means 13 is provided with successively the right side that the first position-limited lever 14 straight down and the second position-limited lever 15, first position-limited lever 14 and the second position-limited lever 15 are all positioned at quarter butt 10, wherein, be connected with the right-hand member of left side limiting stopper 11 by the left side of a Returnning spring 9 by the first position-limited lever 14, be connected with the right-hand member of quarter butt 10 by the left side of another root Returnning spring 9 by the second position-limited lever 15, the bottom of the first position-limited lever 14 is lower than the top of quarter butt 10, namely by Returnning spring 9, link rotatable mechanism 7 is drawn round about, guarantee when having fault at electronic throttle control unit ECU3, the corner of the electronic throttle 6 be connected with link rotatable mechanism 7 can be returned to the equilibrium position jointly determined by two Returnning springs 9, guarantee that motor 5 can normally work.
Under original state, electronic throttle 6 is in equilibrium position under the effect of Returnning spring 9, when closure final controlling element 4 drive link rotating mechanism 7 is to left movement, when quarter butt 10 contacts with left side limiting stopper 11, namely reach the restraining position that link rotatable mechanism 7 runs left, now electronic throttle 6 is in full-gear; When closure final controlling element 4 drive link rotating mechanism 7 moves right, when quarter butt 10 contacts with right side limiting stopper 12, namely reach the restraining position that link rotatable mechanism 7 runs to the right, now electronic throttle 6 is in full-shut position;
Electronic throttle 6 is provided with two throttle position sensor 2; The voltage signal that above-mentioned two throttle position sensor 2 export is inverse ratio with the aperture increase of electronic throttle 6, and the voltage signal sum that above-mentioned two throttle position sensor 2 export equals the power supply total voltage of throttle position sensor 2 all the time, realizes the mutual detection of two throttle position sensor 2 signals;
Closure final controlling element 4 is a control motor; The Driving Torque of closure final controlling element 4 and the dutycycle of pulse-width signal are directly proportional, and the sense of rotation of closure final controlling element 4 is controlled by the Returnning spring be connected with electronic throttle 6; When the dutycycle that closure final controlling element 4 receives is constant, when the resisting moment of the Returnning spring that the Driving Torque of closure final controlling element 4 is connected with same electronic throttle 6 keeps balancing, guarantee that the valve opening saving electronic throttle 6 is constant; When the dutycycle that closure final controlling element 4 receives increases, the driving moment of closure final controlling element 4 overcomes the resisting moment of Returnning spring, and the throttle opening of electronic throttle 6 increases; When the dutycycle that closure final controlling element 4 receives reduces, closure final controlling element 4 Driving Torque is less than the resisting moment of Returnning spring, and the throttle opening of electronic throttle 6 also reduces thereupon.
See Fig. 3, a kind of controlling method of the electronic throttle valve device for range extender of electric vehicle, is characterized in that, controls by following step:
Step one: the running parameter being obtained vehicle by electronic throttle control unit ECU3: crankshaft-position signal, camshaft-position signal, actual closure ON signal degree, boost pressure signal, intake air temperature signals and coolant temperature signal;
Step 2: calculate the current rotating speed of motor 5 of vehicle and the aperture of electronic throttle 6 according to the signal obtained in step one by electronic throttle control unit ECU3, judges that current being in of motor 5 shuts down working state, startup working state, idling work state or power generation operation state;
Step 3: the four kinds of working staties obtained according to step 2 judgement, go out corresponding target throttle aperture by following formulae discovery respectively, control the aperture size of electronic throttle 6.
3.1 shut down working state or start working state
By water temperature and the rotating speed of motor 5, determine the aperture size of electronic throttle 6;
Shut down working state or the electronic throttle target aperture ETC_SP started under working state is the functional value obtained by inquiring about a bivariate table, this bivariate table for independent variable, exports electronic throttle target aperture ETC_SP with water temperature and rotating speed;
ETC_SP=f (water temperature, rotating speed), namely electronic throttle target aperture ETC_SP is worth with the rising of water temperature and diminishes, and is worth diminishes with the rising of rotating speed.
3.2 idling work states
Idling work state regulates aperture by the basic aperture of idling, speed closed loop PID, and fan and temperature correction three part composition; Electronic throttle target aperture ETC_SP during idling is that the basic aperture ETC_SP_IS_BAS of idling and speed closed loop PID regulate aperture ETC_SP_IS_PID and fan and temperature correction ETC_SP_ADD_LOAD sum;
ETC_SP＝ETC_SP_IS_BAS+ETC_SP_IS_PID+ETC_SP_ADD_LOAD；
The basic aperture ETC_SP_IS_BAS of idling according to motor with or without air-conditioning, current driving parked state is classified, inquire about two one dimension tables under corresponding state respectively according to different states, namely the functional value obtained tabling look-up is added is the basic aperture ETC_SP_IS_BAS of idling.Two one dimension tables respectively with water temperature and intake temperature for independent variable, throttle opening value corresponding under exporting different water temperature and various inlet temperature respectively.
Speed closed loop PID regulates aperture ETC_SP_IS_PID to be the output quantity that the speed closed loop of electronic throttle control unit ECU3 under engine idle conditions controls, what this speed closed loop controlled employing is PID regulator, and its P entry value ETC_SP_IS_P, I entry value ETC_SP_IS_I and D entry value ETC_SP_IS_D adopt calibration scale to realize respectively; Wherein, the one dimension table that the calibration scale of P entry value ETC_SP_IS_P and I entry value ETC_SP_IS_I is all is independent variable with rotating speed deviation, namely the functional value checked in by inquiring about this one dimension table is the regulated quantity of the P entry value ETC_SP_IS_P of throttle opening and the regulated quantity of I entry value ETC_SP_IS_I; The one dimension table that the calibration scale of D entry value ETC_SP_IS_D is independent variable with the difference of current rotating speed deviation and last rotating speed deviation, by inquire about this one dimension table the functional value checked in namely be the regulated quantity of the D entry value ETC_SP_IS_D of throttle opening.
Electronic throttle control unit ECU3, by calculating the difference of the real-time actual speed of work at present setting speed and collection as rotating speed deviation, inquires about P item table and the I item table of PID regulator respectively; In addition, electronic throttle control unit ECU3 is by calculating the difference of current rotating speed deviation and last rotating speed deviation, the D item table of inquiry PID regulator, and obtain under n moment condition according to following algorithm, the electronic throttle target aperture ETC_SP of the electronic throttle 6 calculated by speed closed loop PID regulator:
ETC_SP_IS_I_SUM(n)＝ETC_SP_IS_I_SUM(n-1)+ETC_SP_IS_I(n)；
ETC_SP＝ETC_SP_IS_P+ETC_SP_IS_I_SUM+ETC_SP_IS_D。
Fan and temperature correction ETC_SP_ADD_LOAD are divided into fan load to compensate throttle opening correction ETC_SP_FAC_TIA two-part composition of ETC_SP_ADD_FAN and intake temperature.
Wherein fan load compensates according to there being fan-free, high low speed fan-status inquires about calibration value under each corresponding state, the compensation rate under the stable situation during this calibration value compensates as fan load; In addition, when fan-status to have between fan-free, high low speed fan under situation of change, fan load compensates an additional transient state fan load on the basis of stable state fan load compensation and compensates, and this transient state fan load compensates inquires about a calibration value in the fan-status change moment; In addition, transient state fan load compensates and will taper to null value by this calibration value by certain gradient;
The functional value that the one dimension table that the throttle opening correction ETC_SP_FAC_TIA of intake temperature take intake temperature as independent variable by inquiry obtains, this functional value is exactly the throttle opening correction ETC_SP_FAC_TIA of intake temperature.
3.3 power generation operation states
Power generation operation state is decided by the speed closed loop PID adjustment module based on generating rotating speed of target; Electronic throttle control unit ECU3 inputs to PID module according to the deviation of generate electricity rotating speed of target and actual speed and regulates, and final regulated quantity is the target open position ETC_SP_GE_PID of electronic throttle 6.
Its P entry value ETC_SP_GE_P, I entry value ETC_SP_GE_I and D entry value ETC_SP_GE_D adopt calibration scale to realize respectively; Wherein, the one dimension table that the calibration scale of P entry value ETC_SP_GE_P and I entry value ETC_SP_GE_I is all is independent variable with rotating speed deviation, namely the functional value checked in by inquiring about this one dimension table is the regulated quantity of the P entry value ETC_SP_GE_P of throttle opening and the regulated quantity of I entry value ETC_SP_GE_I; The one dimension table that the calibration scale of D entry value ETC_SP_GE_D is independent variable with the difference of current rotating speed deviation and last rotating speed deviation, by inquire about this one dimension table the functional value checked in namely be the regulated quantity of the D entry value ETC_SP_GE_D of throttle opening.
Electronic throttle control unit ECU3, by calculating the difference of the real-time actual speed of work at present setting speed and collection as rotating speed deviation, inquires about P item table and the I item table of PID regulator respectively; In addition, electronic throttle control unit ECU3 is by calculating the difference of current rotating speed deviation and last rotating speed deviation, the D item table of inquiry PID regulator, and obtain under n moment condition according to following algorithm, the electronic throttle target aperture ETC_SP of the electronic throttle 6 calculated by speed closed loop PID regulator:
ETC_SP_GE_I_SUM(n)＝ETC_SP_GE_I_SUM(n-1)+ETC_SP_GE_I(n)；
ETC_SP＝ETC_SP_GE_P+ETC_SP_GE_I_SUM+ETC_SP_GE_D。
Step 4: judge and four kinds of working staties obtaining according to step 2, by electronic throttle control unit ECU3, ignition advance angle is carried out to motor 5, the i.e. control on igniting opportunity of motor 5:
First, signal sampling is carried out to the current suction pressure of motor 5 and temperature, draw the best charge flow rate of motor 5 and corresponding motor 5 fuel injection quantity according to suction pressure, temperature and speed-density formula and air fuel ratio formulae discovery;
Subsequently, transient state oil spout compensation is carried out to the above-mentioned fuel injection quantity calculated, obtains final fuel injection quantity;
Finally the aperture size of electronic throttle 6 is coordinated to carry out oil spout by controlling motor 5 to electronic throttle control unit ECU3 by this numerical value.
In addition, what the speed closed loop of electronic throttle control unit ECU3 controlled to adopt is pi regulator, and its P entry value ETC_SP_P and I entry value ETC_SP_I adopts calibration scale to realize respectively; Wherein, the one dimension table that the calibration scale of P entry value ETC_SP_P and I entry value ETC_SP_I is all is independent variable with rotating speed deviation, namely the functional value checked in by inquiring about this one dimension table is the regulated quantity of the P entry value ETC_SP_P of throttle opening and the regulated quantity of I entry value ETC_SP_I;
Electronic throttle control unit ECU3 is by calculating the difference of the real-time actual speed of work at present setting speed and collection as rotating speed deviation, inquire about P item table and the I item table of pi regulator respectively, and obtain under n moment condition according to following algorithm, the electronic throttle target aperture ETC_SP of the electronic throttle 6 calculated by speed closed loop pi regulator:
ETC_SP_I_SUM(n)＝ETC_SP_I_SUM(n-1)+ETC_SP_I(n)；
ETC_SP＝ETC_SP_P+ETC_SP_I_SUM。
The generating operation mode on car load is simulated in Bench calibration experiment, by adjustable electric load, this product is loaded, and under different loading amplitudes, the regulated quantity of the P entry value ETC_SP_P of throttle opening and the regulated quantity of I entry value ETC_SP_I are demarcated in detail, finally reach stable state and the loading methods of Generation Control:
In engine bench test experiment, the initial operating mode of motor 5 is (1500rpm) no-load running under generating rotating speed of target, by twice shock load, and the correctness of the stability that checking motor 5 rotating speed controls and Electronic Throttle Control.The load of twice loading is respectively: when first time loads, load is loaded on 38% of distance increasing unit rated generation power by unloaded (0%); When second time loads, load increases to 65% by 38%.Experimental data curve as shown in Figure 3.Visible, under the effect of engine speed closed loop PID adjustment module, target open position all corresponding increase when loading for twice of electronic throttle 6.And under the effect of electronic throttle 6 position-force control, electronic throttle 6 physical location is servo-actuated with target location all the time, substantially coincidence is reached, thus the fast quick-recovery realizing twice shock load rear engine rotating speed is laid equal stress on and is newly reached stable, thus demonstrate this product and controlling method according to different motor 5 actual conditionss, can reach controlling functions and the effect of expection.In addition, the target location of electronic throttle 6 is according to the logic of controlling calculation, change with the change of motor 5 operating mode, and electronic throttle 6 physical location also servo-actuated under self-position feedback control (physical location curve almost overlaps with target location curve).The change curve of correlated variables as shown in Figure 3.This experimental verification, based on the Electronic Throttle Control algorithm of type range extender engine operating mode, according to different motor actual conditions, can realize the controlling functions of design.
Claims (2)
1. adopt the controlling method of the electronic throttle valve device being used for range extender of electric vehicle, it is characterized in that controlling by following step:
Step one: the running parameter being obtained vehicle by electronic throttle control unit ECU (3): crankshaft-position signal, camshaft-position signal, actual throttle opening amount signal, boost pressure signal, intake air temperature signals and coolant temperature signal;
Step 2: calculate the current rotating speed of motor (5) of vehicle and the aperture of electronic throttle (6) according to the signal obtained in step one by electronic throttle control unit ECU (3), judges that current being in of motor (5) shuts down working state, startup working state, idling work state or power generation operation state;
Step 3: the four kinds of working staties obtained according to step 2 judgement, go out corresponding target throttle aperture by following formulae discovery respectively, control the aperture size of electronic throttle (6):
3.1 shut down working state or start working state
By water temperature and the rotating speed of motor (5), determine the aperture size of electronic throttle (6);
Shut down working state or the electronic throttle target aperture ETC_SP started under working state is the functional value obtained by inquiring about a bivariate table, this bivariate table for independent variable, exports electronic throttle target aperture ETC_SP with water temperature and rotating speed; Electronic throttle target aperture ETC_SP=f (water temperature, rotating speed) is worth with the rising of water temperature and diminishes, and is worth diminishes with the rising of rotating speed;
3.2 idling work states
Idling work state regulates aperture by the basic aperture of idling, speed closed loop PID, and fan and temperature correction three part composition; Electronic throttle target aperture ETC_SP during idling is that the basic aperture ETC_SP_IS_BAS of idling and speed closed loop PID regulate aperture ETC_SP_IS_PID and fan and temperature correction ETC_SP_ADD_LOAD sum;
ETC_SP＝ETC_SP_IS_BAS+ETC_SP_IS_PID+ETC_SP_ADD_LOAD；
The basic aperture ETC_SP_IS_BAS of idling according to motor with or without air-conditioning, current driving parked state is classified, inquire about two one dimension tables under corresponding state respectively according to different states, namely the functional value obtained tabling look-up is added is the basic aperture ETC_SP_IS_BAS of idling; Two one dimension tables respectively with water temperature and intake temperature for independent variable, throttle opening value corresponding under exporting different water temperature and various inlet temperature respectively;
Speed closed loop PID regulates aperture ETC_SP_IS_PID to be the output quantity that the speed closed loop of electronic throttle control unit ECU (3) under engine idle conditions controls, what this speed closed loop controlled employing is PID regulator, and its P entry value ETC_SP_IS_P, I entry value ETC_SP_IS_I and D entry value ETC_SP_IS_D adopt calibration scale to realize respectively; Wherein, the one dimension table that the calibration scale of P entry value ETC_SP_IS_P and I entry value ETC_SP_IS_I is all is independent variable with rotating speed deviation, namely the functional value checked in by inquiring about this one dimension table is the regulated quantity of the P entry value ETC_SP_IS_P of throttle opening and the regulated quantity of I entry value ETC_SP_IS_I; The one dimension table that the calibration scale of D entry value ETC_SP_IS_D is independent variable with the difference of current rotating speed deviation and last rotating speed deviation, by inquire about this one dimension table the functional value checked in namely be the regulated quantity of the D entry value ETC_SP_IS_D of throttle opening; Electronic throttle control unit ECU (3), by calculating the difference of the real-time actual speed of work at present setting speed and collection as rotating speed deviation, inquires about P item table and the I item table of PID regulator respectively; In addition, electronic throttle control unit ECU (3) is by calculating the difference of current rotating speed deviation and last rotating speed deviation, the D item table of inquiry PID regulator, and obtain under n moment condition according to following algorithm, the electronic throttle target aperture ETC_SP of the electronic throttle (6) calculated by speed closed loop PID regulator:
ETC_SP_IS_I_SUM(n)＝ETC_SP_IS_I_SUM(n-1)+ETC_SP_IS_I(n)；
ETC_SP＝ETC_SP_IS_P+ETC_SP_IS_I_SUM+ETC_SP_IS_D；
Fan and temperature correction ETC_SP_ADD_LOAD are divided into fan load to compensate throttle opening correction ETC_SP_FAC_TIA two-part composition of ETC_SP_ADD_FAN and intake temperature;
Wherein fan load compensates according to there being fan-free, high low speed fan-status inquires about calibration value under each corresponding state, the compensation rate under the stable situation during this calibration value compensates as fan load; In addition, when fan-status to have between fan-free, high low speed fan under situation of change, fan load compensates an additional transient state fan load on the basis of stable state fan load compensation and compensates, and this transient state fan load compensates inquires about a calibration value in the fan-status change moment; In addition, transient state fan load compensates and will taper to null value by this calibration value by certain gradient;
The functional value that the one dimension table that the throttle opening correction ETC_SP_FAC_TIA of intake temperature take intake temperature as independent variable by inquiry obtains, this functional value is exactly the throttle opening correction ETC_SP_FAC_TIA of intake temperature;
3.3 power generation operation states
Power generation operation state is decided by the speed closed loop PID adjustment module based on generating rotating speed of target; Electronic throttle control unit ECU (3) inputs to PID module according to the deviation of generate electricity rotating speed of target and actual speed and regulates, and final regulated quantity is the target open position ETC_SP_GE_PID of electronic throttle (6); Its P entry value ETC_SP_GE_P, I entry value ETC_SP_GE_I and D entry value ETC_SP_GE_D adopt calibration scale to realize respectively; Wherein, the one dimension table that the calibration scale of P entry value ETC_SP_GE_P and I entry value ETC_SP_GE_I is all is independent variable with rotating speed deviation, namely the functional value checked in by inquiring about this one dimension table is the regulated quantity of the P entry value ETC_SP_GE_P of throttle opening and the regulated quantity of I entry value ETC_SP_GE_I; The one dimension table that the calibration scale of D entry value ETC_SP_GE_D is independent variable with the difference of current rotating speed deviation and last rotating speed deviation, by inquire about this one dimension table the functional value checked in namely be the regulated quantity of the D entry value ETC_SP_GE_D of throttle opening; Electronic throttle control unit ECU (3), by calculating the difference of the real-time actual speed of work at present setting speed and collection as rotating speed deviation, inquires about P item table and the I item table of PID regulator respectively; In addition, electronic throttle control unit ECU (3) is by calculating the difference of current rotating speed deviation and last rotating speed deviation, the D item table of inquiry PID regulator, and obtain under n moment condition according to following algorithm, the electronic throttle target aperture ETC_SP of the electronic throttle (6) calculated by speed closed loop PID regulator:
ETC_SP_GE_I_SUM(n)＝ETC_SP_GE_I_SUM(n-1)+ETC_SP_GE_I(n)；
ETC_SP＝ETC_SP_GE_P+ETC_SP_GE_I_SUM+ETC_SP_GE_D；
Step 4: the four kinds of working staties obtained according to step 2 judgement, by electronic throttle control unit ECU (3), ignition advance angle is carried out to motor (5), the i.e. control on igniting opportunity of motor (5): first, signal sampling is carried out to the current suction pressure of motor (5) and temperature, draws best charge flow rate and corresponding motor (5) fuel injection quantity of motor (5) according to suction pressure, temperature and speed-density formula and air fuel ratio formulae discovery; Subsequently, transient state oil spout compensation is carried out to the above-mentioned fuel injection quantity calculated, obtains final fuel injection quantity; Finally the aperture size of electronic throttle (6) is coordinated to carry out oil spout by controlling motor (5) to electronic throttle control unit ECU (3) by this numerical value.
2. the controlling method of a kind of electronic throttle valve device for range extender of electric vehicle as claimed in claim 1, it is characterized in that: what the speed closed loop of electronic throttle control unit ECU (3) controlled to adopt is pi regulator, and its P entry value ETC_SP_P and I entry value ETC_SP_I adopts calibration scale to realize respectively; Wherein, the one dimension table that the calibration scale of P entry value ETC_SP_P and I entry value ETC_SP_I is all is independent variable with rotating speed deviation, namely the functional value checked in by inquiring about this one dimension table is the regulated quantity of the P entry value ETC_SP_P of throttle opening and the regulated quantity of I entry value ETC_SP_I;
Electronic throttle control unit ECU (3) is by calculating the difference of the real-time actual speed of work at present setting speed and collection as rotating speed deviation, inquire about P item table and the I item table of pi regulator respectively, and obtain under n moment condition according to following algorithm, the electronic throttle target aperture ETC_SP of the electronic throttle (6) calculated by speed closed loop pi regulator:
ETC_SP_I_SUM(n)＝ETC_SP_I_SUM(n-1)+ETC_SP_I(n)；
ETC_SP＝ETC_SP_P+ETC_SP_I_SUM。
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| CN106555679B (en) * | 2015-09-28 | 2019-10-01 | 长城汽车股份有限公司 | Throttle control method, system and the vehicle of dual fuel engine |
| CN105781751A (en) * | 2015-11-26 | 2016-07-20 | 奇瑞汽车股份有限公司 | Two-cylinder engine for range extender |
| KR102437279B1 (en) * | 2016-03-23 | 2022-08-29 | 현대두산인프라코어(주) | Calibration device and calibration method of throttle valve for mechanical engine |
| CN106246359A (en) * | 2016-10-18 | 2016-12-21 | 上海叶盛电气有限公司 | A kind of stroke-increasing electric automobile electronics throttle-valve body |
| CN109960241B (en) * | 2017-12-26 | 2021-06-18 | 长城汽车股份有限公司 | Automatic test method and system for automobile ECU internal calibration meter |
| CN108407624B (en) * | 2018-03-12 | 2021-03-26 | 杭州赫日新能源科技有限公司 | Control method of hybrid excitation type internal combustion power generation range extending system of electric automobile |
| CN111322164B (en) * | 2020-03-12 | 2022-03-01 | 宁波洁程汽车科技有限公司 | Engine rotating speed control method based on Q-learning |
| CN111852669A (en) * | 2020-07-10 | 2020-10-30 | 浙江亚特电器有限公司 | Method for controlling position of throttle valve of digital generator |
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| DE102010003000A1 (en) * | 2010-03-18 | 2011-09-22 | Bayerische Motoren Werke Aktiengesellschaft | Method for controlling range-extender in electric vehicle, involves determining power rating according to required drive torque, where range-extender is controlled according to power rating |
| CN202357902U (en) * | 2011-08-08 | 2012-08-01 | 武汉理工大学 | Electric vehicle power system with fuel cell as vehicle-mounted extended range type charger |
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