CN109062174B - Range-extending type hybrid power system performance test bench system - Google Patents

Range-extending type hybrid power system performance test bench system Download PDF

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Publication number
CN109062174B
CN109062174B CN201810568139.4A CN201810568139A CN109062174B CN 109062174 B CN109062174 B CN 109062174B CN 201810568139 A CN201810568139 A CN 201810568139A CN 109062174 B CN109062174 B CN 109062174B
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torque
speed sensor
control unit
hybrid power
rack
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CN109062174A (en
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赵治国
陈家毅
雷丹
倪润宇
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Tongji University
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Tongji University
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00Testing or monitoring of control systems or parts thereof
    • G05B23/02Electric testing or monitoring
    • G05B23/0205Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0208Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
    • G05B23/0213Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/24Pc safety
    • G05B2219/24065Real time diagnostics

Abstract

The invention relates to a performance test rack system of an extended range type hybrid power system, which is used for the performance test of the extended range type hybrid power system and comprises a road load simulation motor control unit, a road load simulation motor, a battery simulator/electronic load and a rack measurement and control unit; the rack measuring and controlling unit comprises a first torque rotating speed sensor, a second torque rotating speed sensor, a third torque rotating speed sensor, a rack controlling unit, a rack rapid prototype controller and an upper computer calibration system. Compared with the prior art, the method has the advantages that the performance of the hybrid power system can be better tested and evaluated, and the better energy economy and longitudinal driving performance of the extended range hybrid vehicle can be realized.

Description

Range-extending type hybrid power system performance test bench system
Technical Field
The invention relates to the field of new energy automobiles, in particular to a performance test bench system of an extended range type hybrid power system.
Background
The extended-range hybrid power system has become a development hotspot of new energy automobiles at the present stage by virtue of the obvious advantages of simple structure, high oil saving rate, small spatial arrangement pressure, lower cost, high energy density, long driving range and the like. Extended range hybrid vehicles must rely on efficient energy management strategies and reliable mode switching control to further improve the energy economy and longitudinal drivability of the vehicle.
At the present stage, the energy management strategy and the mode switching strategy of the hybrid electric vehicle are generally tested and evaluated in an off-line simulation and real vehicle test mode, the off-line simulation needs to establish a whole vehicle and each part model, and the off-line simulation has a certain difference from the real vehicle condition and cannot better verify the effectiveness of the control strategy; the real vehicle test can accurately verify the control strategy, but the development period is long, the test cost is high, and the progress of the whole vehicle research and development is influenced. Therefore, it is necessary to design an extended range hybrid system performance test bench solution for the early development of vehicles.
Disclosure of Invention
The present invention is directed to a system for testing performance of an extended range hybrid power system, which overcomes the above-mentioned drawbacks of the prior art.
The purpose of the invention can be realized by the following technical scheme:
a kind of range extending hybrid power system performance test rack system, used for the performance test of the range extending hybrid power system, the said range extending hybrid power system includes increasing the range device system, electrically driving the drive unit, power storage battery and its battery management system BMS, wherein the said range extending system includes auxiliary power unit APU, engine control unit, generator control unit, clutch and clutch actuator, the said electrically driving the drive unit including driving motor, driving motor control unit, synchronizer actuator and decelerator, the said rack system includes road load simulation motor control unit, road load simulation motor, battery simulator/electronic load, rack measures and the control unit; the rack measuring and controlling unit comprises a first torque rotating speed sensor, a second torque rotating speed sensor, a third torque rotating speed sensor, a rack controlling unit, a rack rapid prototype controller and an upper computer calibration system;
the road load simulation motor is connected with the speed reducer, the road load simulation motor control unit is respectively connected with the road load simulation motor and the battery simulator/electronic load, the first torque and speed sensor is connected between the generator and the synchronizer, the second torque and speed sensor is connected between the synchronizer actuating mechanism and the speed reducer, the third torque and speed sensor is connected between the speed reducer and the driving motor, the upper computer calibration system is respectively connected with the rack control unit and the rack rapid prototype controller, and the rack rapid prototype controller is respectively connected with the battery management system BMS, the auxiliary power unit APU, the first torque and speed sensor, the second torque and speed sensor, the third torque and speed sensor, the synchronizer actuating mechanism, the driving motor control unit, the road load simulation motor control unit, The stand control unit is connected.
Preferably, the auxiliary power unit APU is connected to the engine control unit and the generator control unit, respectively.
Preferably, the engine, the clutch actuator, the generator, the first torque and speed sensor, the synchronizer actuator, the second torque and speed sensor, the speed reducer and the road load simulation motor are sequentially connected; the driving motor, the third torque and rotating speed sensor, the speed reducer and the road load simulation motor are sequentially connected.
Preferably, the road load simulation motor control unit controls the road load simulation motor to simulate a vehicle running load and load the load on the output shaft of the speed reduction device.
Preferably, the battery simulator/electronic load is used for recovering braking energy generated by the road load simulation motor.
Preferably, the first torque and rotation speed sensor, the second torque and rotation speed sensor and the third torque and rotation speed sensor are used for measuring the torque and rotation speed of the transmission shaft in real time.
Preferably, the rack rapid prototype controller runs an energy management strategy, a mode switching strategy, a driver model and a vehicle longitudinal dynamics model which are established by an upper computer, and is used for developing and debugging the energy management strategy and the mode switching control strategy of the modular extended range hybrid power system, testing and evaluating the performance of the extended range hybrid power system.
Compared with the prior art, the method can accurately calculate the key parameters such as real sliding friction work, impact degree and the like in the mode switching process of the hybrid power system, can develop the research work of the energy management strategy and the mode switching control strategy of the hybrid power system, and can well test and evaluate the performance of the hybrid power system so as to realize better energy economy and longitudinal driving performance of the novel extended range hybrid vehicle.
Drawings
FIG. 1 is a schematic diagram of an overall structure of a performance testing bench of an extended range hybrid power system;
FIG. 2 is a schematic diagram of a bench-based scheme control system for performance testing of an extended range hybrid power system;
FIG. 3 is a schematic diagram of an overall structure of a bench-derived scheme for testing the performance of an extended range hybrid system;
FIG. 4 is a schematic diagram of a control system of a bench-derived strategy for performance testing of an extended range hybrid power system;
FIG. 5 is a schematic diagram of a second embodiment of a bench-derived performance testing scheme for an extended range hybrid power system;
FIG. 6 is a schematic diagram of a second control system of a bench-derived strategy for performance testing of an extended range hybrid power system;
the reference numbers in the figures illustrate:
1. a power storage battery; 2. an engine; 3. a clutch; 4. a clutch actuator; 5. a generator; 6. a first torque-to-speed sensor; 7. a synchronizer; 8. a synchronizer actuator; 9. a second torque and rotation speed sensor; 10. a reduction gear; 11. battery simulator/electronic load; 12. a road load simulating motor; 13. a third torque and rotation speed sensor; 14. a road load simulation motor control unit; 15. a drive motor; 16. an upper computer calibration system; 17. a stage control unit; 18. a drive motor control unit; 19. a rack rapid prototype controller; 20. an auxiliary power unit; 21. a battery management system; 22. a generator control unit; 23. an engine control unit; 24. a reduction gear control unit.
"a" represents a CAN bus, "b" represents a mechanical connection, "c" represents a normal electrical connection, and "d" represents a high voltage electrical connection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
As shown in fig. 1, the extended range hybrid system performance test bench scheme includes three parts, namely, a test object (extended range hybrid system), a road load simulation motor 12, a battery simulator/electronic load 11, and a bench measurement and control unit. The range extending type hybrid power system comprises a range extender system, an electric drive transmission device, a power storage battery 1, a Battery Management System (BMS)21 and the like, wherein the range extender system comprises an Auxiliary Power Unit (APU)20, an engine 2, an engine control unit 23, a generator 5, a generator control unit 22, a clutch 3, a clutch executing mechanism 4 and the like, and the APU has a clutch control function; the electric drive transmission device comprises a drive motor 15, a drive motor control unit 18, a synchronizer 7, a synchronizer actuating mechanism 8, a speed reducing device 10 and the like; the bench measuring and controlling unit comprises a first torque and rotating speed sensor 6, a second torque and rotating speed sensor 9, a third torque and rotating speed sensor 13, a bench controlling unit 17, a bench rapid prototype controller 19 and an upper computer calibration system 16 thereof.
The auxiliary power unit 20 is connected with an engine control unit 23 and a generator control unit 22 respectively; the rack rapid prototype controller 19 is connected with a battery management system 21, an auxiliary power unit 20, a first torque and rotation speed sensor 6, a second torque and rotation speed sensor 9, a third torque and rotation speed sensor 13, a synchronizer actuating mechanism 8, a driving motor control unit 18, a road load simulation motor control unit 14, a rack control unit 17 and an upper computer calibration system 16; the upper computer calibration system 16 is respectively connected with a rack rapid prototype controller 19 and a rack control unit 17; the battery simulator/electronic load 11 and the road load simulation motor control unit 14.
The bench scheme control system for the performance test of the extended range type hybrid power system is shown in fig. 2, and a Simulink model is established by Matlab/Simulink software in an upper computer calibration system and comprises a driver model, a vehicle model and a control strategy.
The driver model, the vehicle model and the control strategy generate C codes through RTW, the C codes are downloaded into the rack rapid prototype controller, the vehicle model calculates the running resistance of the vehicle under different working conditions to obtain the load of a driving system, the load is communicated with the road load simulation motor control unit through the CAN bus, and then the road load simulation motor is controlled by the road load simulation motor control unit to load the load onto the output shaft of the speed reducer. The control strategy determines the current running mode of the vehicle according to the states of the opening degree of an accelerator pedal, the opening degree of a brake pedal, the vehicle speed, the state of charge of a battery and the like of the vehicle, calculates the rotating speed/torque of each power source, distributes the rotating speed/torque of an engine, the rotating speed/torque of a generator and the rotating speed/torque of a driving motor through a CAN bus, simultaneously controls a clutch actuating mechanism through an auxiliary power unit, and controls a synchronizer actuating mechanism through a rack rapid prototype controller to realize the switching between the modes.
The method is characterized in that a graphical monitoring interface is established by utilizing calibration software in an upper computer calibration system, signals such as the rotating speed/torque of an engine, the rotating speed/torque of a generator, the rotating speed/torque of a driving motor, the state of a clutch, the state of a synchronizer, the state of charge of a battery and the like can be monitored, and parameters in a control strategy can be calibrated based on the graphical calibration interface.
The control of the clutch actuating mechanism and the synchronizer actuating mechanism is one of the important research points of the mode switching of the hybrid power system, so that the test bench adopts the real clutch and synchronizer on the real vehicle, the on-load operation can be realized, and the operation condition of the real vehicle can be reflected more truly. Through reasonable arrangement of the torque and rotating speed sensors, the test bench can truly calculate key parameters such as sliding friction power and impact degree. In conclusion, the test bench can better develop and debug the energy management strategy and the mode switching control strategy of the modular extended range hybrid power system, and test and evaluate the performance of the extended range hybrid power system.
Fig. 3 is a schematic diagram of an overall structure of a derived scheme of a range-extended hybrid power system performance test bench, in which an engine control unit 23, a generator control unit 22 and a clutch actuator 4 are directly connected to a bench rapid prototyping controller 19, and fig. 4 is a schematic diagram of a control system of a derived scheme of a corresponding range-extended hybrid power system performance test bench.
Fig. 5 is a schematic diagram of the whole structure of the derived scheme of the extended range hybrid system performance test bench, in which the clutch actuator 4 and the synchronizer actuator 8 are connected to the reduction gear control unit 24, the reduction gear control unit 24 is connected to the rapid prototyping controller 19 of the bench, and fig. 6 is a schematic diagram of the control system of the derived scheme of the extended range hybrid system performance test bench.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. The utility model provides a range extending type hybrid power system capability test rack system for range extending type hybrid power system capability test, range extending type hybrid power system include range extender system, electrically drive transmission, power battery (1) and battery management system BMS (21) thereof, wherein the range extender system includes auxiliary power unit APU (20), engine (2), engine control unit (23), generator (5), generator control unit (22), clutch (3) and clutch actuating mechanism (4), electrically drive transmission include driving motor (15), driving motor control unit (18), synchronizer (7), synchronizer actuating mechanism (8) and decelerator (10), characterized in that, the rack system include road load simulation motor control unit (14), road load simulation motor (12), A battery simulator/electronic load (11), a gantry measurement and control unit; the rack measuring and controlling unit comprises a first torque rotating speed sensor (6), a second torque rotating speed sensor (9), a third torque rotating speed sensor (13), a rack controlling unit (17), a rack rapid prototyping controller (19) and an upper computer calibration system (16);
the road load simulation motor (12) is connected with the speed reducer (10), the road load simulation motor control unit (14) is respectively connected with the road load simulation motor (12) and the battery simulator/electronic load (11), the first torque and rotation speed sensor (6) is connected between the generator (5) and the synchronizer (7), the second torque and rotation speed sensor (9) is connected between the synchronizer actuator (8) and the speed reducer (10), the third torque and rotation speed sensor (13) is connected between the speed reducer (10) and the driving motor (15), the upper computer calibration system (16) is respectively connected with the rack control unit (17) and the rack rapid prototyping controller (19), and the rack rapid prototyping controller (19) is respectively connected with the battery management system BMS (21), the auxiliary power unit (20) and the APU (20), The road load simulation system comprises a first torque rotating speed sensor (6), a second torque rotating speed sensor (9), a third torque rotating speed sensor (13), a synchronizer actuating mechanism (8), a driving motor control unit (18), a road load simulation motor control unit (14) and a rack control unit (17) which are connected.
2. The extended range hybrid power system performance test bench system of claim 1, wherein the Auxiliary Power Unit (APU) (20) is connected to the engine control unit (23) and the generator control unit (22), respectively.
3. The extended range hybrid power system performance test bench system according to claim 1, wherein the engine (2), the clutch (3), the clutch actuator (4), the generator (5), the first torque and rotation speed sensor (6), the synchronizer (7), the synchronizer actuator (8), the second torque and rotation speed sensor (9), the speed reducer (10) and the road load simulation motor (12) are sequentially connected; the driving motor (15), the third torque and rotating speed sensor (13), the speed reducer (10) and the road load simulation motor (12) are sequentially connected.
4. The extended-range hybrid power system performance test bench system according to claim 1, wherein the road load simulation motor control unit (14) controls the road load simulation motor (12) to simulate a vehicle running load and load the load on the output shaft of the reduction gear.
5. The extended-range hybrid power system performance test bench system of claim 1, wherein the battery simulator/electronic load (11) is used for recovering braking energy generated by a road load simulation motor.
6. The extended range hybrid power system performance test bench system of claim 1, wherein the first torque speed sensor (6), the second torque speed sensor (9) and the third torque speed sensor (13) are used for measuring the torque speed of the transmission shaft in real time.
7. The extended range hybrid power system performance test bench system according to claim 1, wherein the bench rapid prototyping controller (19) runs an energy management strategy, a mode switching strategy, a driver model and a vehicle longitudinal dynamics model established by an upper computer, and is used for developing and debugging the energy management strategy and the mode switching control strategy of the modular extended range hybrid power system, and testing and evaluating the performance of the extended range hybrid power system.
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