CN103245503B - A kind of automatic transmission Performance Test System - Google Patents
A kind of automatic transmission Performance Test System Download PDFInfo
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- CN103245503B CN103245503B CN201310190237.6A CN201310190237A CN103245503B CN 103245503 B CN103245503 B CN 103245503B CN 201310190237 A CN201310190237 A CN 201310190237A CN 103245503 B CN103245503 B CN 103245503B
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Abstract
The embodiment of the invention discloses a kind of automatic transmission Performance Test System, the dynamometer machine, the first torque rotary speed sensor and the second torque rotary speed sensor that comprise host computer, Dynamometer Control device and be connected with described host computer respectively; Wherein, described first torque rotary speed sensor is connected with the input shaft of automatic transmission, and described second torque rotary speed sensor is connected with the output shaft of automatic transmission; Described Dynamometer Control device is connected with described dynamometer machine; Described host computer receives input signal, determines the control strategy corresponding to described input signal, and generates corresponding Electric Machine Control instruction, Dynamometer Control instruction and gearshift steering order according to described control strategy; Described host computer receives the feedback signal of described first torque rotary speed sensor, the second torque rotary speed sensor and automatic transmission and according to feedback signal described in described control strategy process, thus realizes the performance test to described automatic transmission.
Description
Technical field
The present invention relates to transmission performance technical field of measurement and test, more particularly, relate to a kind of automatic transmission Performance Test System.
Background technology
Automatic transmission is that one can carry out self-shifting equipment according to engine operating condition and the speed of a motor vehicle, automatically can change ratio of gear and the torque ratio of vehicle, alleviate the labour intensity of driver according to the change of vehicle travel resistance.
In order to ensure that automatic transmission can normally work, usually need to carry out performance test to automatic transmission, concrete, generally need to carry out transmission efficiency test, test fatigue lifetime, gearshift life test, starting performance test, shifting points validation test and evenly acceleration time test.But, in prior art, the performance test of automatic transmission can't be realized.
Summary of the invention
In view of this, the invention provides a kind of automatic transmission Performance Test System, to realize the performance test to described automatic transmission.
A kind of automatic transmission Performance Test System, comprising:
Host computer, Dynamometer Control device, dynamometer machine, the first torque rotary speed sensor and the second torque rotary speed sensor; Wherein:
Described first torque rotary speed sensor is used for being connected with the input shaft of automatic transmission, and described second torque rotary speed sensor is used for being connected with the output shaft of automatic transmission;
Described Dynamometer Control device is connected with described dynamometer machine, and described Dynamometer Control device, the first torque rotary speed sensor are connected with described host computer respectively with the second torque rotary speed sensor;
Described host computer receives input signal, determines the control strategy corresponding to described input signal, and generates steering order according to described control strategy; Described steering order comprises Electric Machine Control instruction, Dynamometer Control instruction and gearshift steering order; Described Electric Machine Control instruction is for controlling the running of electric machine controller drive motor; Described Dynamometer Control instruction drives dynamometer machine running for controlling Dynamometer Control device; Described gearshift steering order is for controlling automatic transmission shift;
Described host computer receive described first torque rotary speed sensor, the second torque rotary speed sensor and automatic transmission feedback signal and according to feedback signal described in described control strategy process.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send to described electric machine controller drive motor to be issued to stepping rotating speed Electric Machine Control instruction in rotating speed pattern, meanwhile, the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode is sent to described Dynamometer Control device;
B, described host computer obtain the stepping rotating speed of the described automatic transmission input end obtained by described first torque and speed sensors measurement, and by described second torque and speed sensors measure to the Driving Torque of described automatic transmission, and the transmission efficiency of described automatic transmission under calculating current gear;
C, described host computer send gearshift steering order to described automatic transmission, and return step a, until the transmission efficiency calculated under each gear of described automatic transmission record.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the gearshift steering order being switched to S shelves to described automatic transmission; The Electric Machine Control instruction driving described motor to be issued to rated speed in rotating speed pattern is sent to described electric machine controller, meanwhile, host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device;
B, described host computer send the gearshift steering order being switched to L shelves to described automatic transmission, the Electric Machine Control instruction driving described motor to be issued to rated speed in rotating speed pattern is sent to described electric machine controller, meanwhile, host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device;
C, return step a, until described automatic transmission circulates between S shelves and L shelves, the gearshift number of times of gearshift reaches preset value, and records described preset value and circulation shift process time used.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send to described electric machine controller the Electric Machine Control instruction that drive motor starts under torque mode, and host computer sends the Dynamometer Control instruction driving described dynamometer machine to start under rotating speed pattern to described Dynamometer Control device simultaneously;
B, described automatic transmission are after under current gear, parallel-adder settle-out time reaches preset value, described host computer sends gearshift steering order to described automatic transmission, return step a, until host computer receives the feedback signal of instruction automatic transmission operation irregularity, or the gearshift number of times that described automatic transmission carries out cyclic switching between each gear reaches preset value.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the gearshift steering order being switched to D shelves to described automatic transmission; Described automatic transmission can according to described dynamometer machine under current torque under D shelves, and the rotation speed change situation of described motor carries out fluid drive under each gear of D shelves;
B, described host computer send to described electric machine controller the Electric Machine Control instruction that drive motor progressively changes the rotating speed of motor under rotating speed pattern, host computer sends the Dynamometer Control instruction driving described dynamometer machine to load Prevailing torque under torque mode to described Dynamometer Control device simultaneously, wherein said preset torque direction is contrary with described motor rotation direction, and limits zero-speed in the other direction;
C, described host computer are obtained and record input speed under each gear of D shelves of the described automatic transmission that recorded by described first torque and speed sensors and input torque, and by the output speed that described second torque and speed sensors records, and draw described input speed, input torque and the output speed change curve under each gear of D shelves.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, under current throttle aperture, described host computer sends the gearshift steering order being switched to D shelves to described automatic transmission;
B, described host computer to described electric machine controller send drive motor reach D shelves under the Electric Machine Control instruction of theoretical shifting points, simultaneously, host computer sends the Dynamometer Control instruction driving described dynamometer machine to finely tune dynamometer machine rotating speed under rotating speed pattern under described theoretical shifting points to described Dynamometer Control device
If the described host computer of c receives the feedback signal that described A/T gear position changes, then record the input speed of now described automatic transmission, otherwise described host computer sends the Electric Machine Control instruction of a certain rotating speed switched near theoretical shifting points to described motor, send the Dynamometer Control instruction driving described dynamometer machine to finely tune dynamometer machine rotating speed under rotating speed pattern under current rotating speed to described Dynamometer Control device simultaneously, until receive the feedback signal that described automatic transmission shifts gears under D shelves, and record described current rotating speed;
D, described host computer send the Electric Machine Control instruction switching current throttle aperture to described motor, return step a, until obtain the shifting points of described automatic transmission under different accelerator open degree.
Wherein, described host computer is specially according to described control strategy generation steering order:
A, described host computer send the gearshift steering order being switched to D shelves to described automatic transmission;
B, under each gear of D shelves, host computer is to driving described electric motor starting under described electric machine controller is emitted in torque mode and regulating the Electric Machine Control instruction of the torque of described motor; Meanwhile, host computer sends the Dynamometer Control instruction driving dynamometer machine to load preset torque to described Dynamometer Control device;
C, described host computer obtain and record the input speed of described automatic transmission, input torque and output speed, and draw described input speed, input torque and output speed from the change curve started to during a gearshift has circulated, and record gearshift each time starts to having shifted gears the required time, wherein, a described gearshift circulation completes and refers to be switched to D2 shelves, D3 shelves, D2 shelves, D1 shelves successively from D1 shelves.
Alternatively, also noise meter is comprised; Described host computer is also for the treatment of the noise information recorded by described noise meter;
Described host computer generates steering order according to described control strategy and is specially:
A, described host computer send to described electric machine controller drive motor to be issued to rated speed Electric Machine Control instruction in rotating speed pattern, and host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device simultaneously;
B, to be obtained in the noise size of described automatic transmission periphery predetermined position by noise meter, and be input in host computer;
C, described host computer send gearshift steering order to described automatic transmission, return step a, until the noise testing data of described automatic transmission under acquiring each gear.
Alternatively, the temperature sensor for detecting described automatic transmission organism temperature is also comprised;
Described temperature sensor is connected with described host computer;
Described host computer generates steering order according to described control strategy, is specially:
A, described host computer send drive motor to described electric machine controller and are issued in rotating speed pattern the Electric Machine Control instruction that motor speed is greater than rated speed, and host computer sends the Dynamometer Control instruction forbidding driving described dynamometer machine to described Dynamometer Control device simultaneously;
B, under current gear, host computer Real-time Obtaining also records the data that described temperature sensor measurement obtains, until described fluid drive actuator temperature stops rising or temperature rises to limit value;
C, described host computer send gearshift steering order to described automatic transmission, return step a, until the temperature rise data of described automatic transmission under acquiring each gear.
Alternatively, also comprise: be connected with described host computer, the electric machine controller receiving described Electric Machine Control instruction and the alternating current generator be connected with described electric machine controller.
As can be seen from above-mentioned technical scheme, the embodiment of the present invention drives alternating current generator work by electric machine controller, braking equipment using described alternating current generator as described automatic transmission, drive described dynamometer machine work by Dynamometer Control device simultaneously, loading equipemtn using described dynamometer machine as described automatic transmission, simulates the running environment of automatic transmission.Host computer is by receiving input signal, determine the control strategy corresponding to described input signal, and (comprise the Electric Machine Control instruction for controlling the running of electric machine controller drive motor according to described control strategy generation steering order, control Dynamometer Control device drive the Dynamometer Control instruction of dynamometer machine running and control the gearshift steering order of automatic transmission shift), simultaneously, receive described first torque rotary speed sensor, the feedback signal of the second torque rotary speed sensor and automatic transmission according to feedback signal described in described control strategy process, described host computer obtains real-time running data when described automatic transmission carries out work under varying input signal, and the Performance Detection of described automatic transmission is completed according to described service data.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of automatic transmission Performance Test System structural representation disclosed in the embodiment of the present invention one;
Fig. 2 is the embodiment of the present invention two another automatic transmission Performance Test System structural representation disclosed.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, the embodiment of the present invention one discloses a kind of automatic transmission Performance Test System, to realize the performance test to described automatic transmission, comprising: host computer 100, Dynamometer Control device 200, dynamometer machine 300, first torque rotary speed sensor 400 and the second torque rotary speed sensor 500;
Wherein, described first torque rotary speed sensor 400 is for being connected with the input shaft of automatic transmission, and described second torque rotary speed sensor 500 is for being connected with the output shaft of automatic transmission;
Described Dynamometer Control device 200 is connected with described dynamometer machine 300, and described Dynamometer Control device 200, first torque rotary speed sensor 400 is connected with described host computer 100 respectively with the second torque rotary speed sensor 500;
Described host computer 100 receives input signal, determines the control strategy corresponding to described input signal, and generates steering order according to described control strategy; Described steering order comprises Electric Machine Control instruction, Dynamometer Control instruction and gearshift steering order; Described Electric Machine Control instruction is for controlling the running of electric machine controller drive motor; Described Dynamometer Control instruction drives dynamometer machine 300 to operate for controlling Dynamometer Control device 200; Described gearshift steering order is for controlling automatic transmission shift;
Described host computer 100 receive described first torque rotary speed sensor 400, second torque rotary speed sensor 500 and automatic transmission feedback signal and according to feedback signal described in described control strategy process.
Described automatic transmission Performance Test System can be applicable to the electric automobile manufacturer being configured with automatic transmission 600, alternating current generator 700 and electric machine controller 800, for described automatic transmission 600 used for electric vehicle carries out performance test, system under test (SUT) comprises the automatic transmission 600 of electric automobile, alternating current generator 700 and electric machine controller 800.
Connect the wiring between described automatic transmission Performance Test System and described system under test (SUT), concrete, described electric machine controller 800 is connected with described host computer 100 respectively with described automatic transmission 600; Described dynamometer machine 300 is connected with the output shaft of described automatic transmission 600 (namely one end of described second torque rotary speed sensor 500 is connected with the output shaft of described automatic transmission 600, and the other end is connected with described dynamometer machine 300) by described second torque rotary speed sensor 500; Described electric machine controller 800 is connected with described alternating current generator 700, described alternating current generator 700 is connected with the input shaft of described automatic transmission 600 (namely one end of described first torque rotary speed sensor 400 is connected with the input shaft of described automatic transmission 600, and the other end is connected with described alternating current generator 700) by described first torque rotary speed sensor 400.After wiring completes, test macro can be started and start test job.
Wherein, described first torque rotary speed sensor 400 is for measuring the rotating speed of described automatic transmission 600 input end and torque, described second torque rotary speed sensor 500 for measuring rotating speed and the torque of described automatic transmission 600 output terminal.Described alternating current generator 700 is for the driving arrangement as automatic transmission 600, and described dynamometer machine 300 is for the electric power loading equipemtn (can simulating vehicle load or vehicle need the friction force that overcomes) as automatic transmission 600.
Wherein, described Dynamometer Control device 200 can adopt friendship-straight-friendship type varying-voltage frequency converter, and this frequency converter first becomes direct current the alternating current of constant pressure and constant rate " rectification ", then the three-phase alternating current that direct current " inversion " becomes voltage and frequency all adjustable.Be easier to owing to DC inverter being become the link of alternating current ratio control, the frequency converter designed by the method the range of adjustment of frequency and after improving variability motor characteristic in have obvious advantage.Concrete, the friendship-straight-friendship type varying-voltage frequency converter of the ACS800 series of ABB brand can be adopted.Described electric machine controller 800 essence is inverter.Described automatic transmission Performance Test System power (hereinafter referred to as " system power supply ") be alternating current, consider that described inverter is using direct current as power supply, need for described inverter configuring direct current power cabinet, concrete, described DC power cabinet is connected with described electric machine controller 800.Described dynamometer machine 300 adopts electric A.C. dynamometer.
Wherein it should be noted that, the gear of described automatic transmission 600 generally comprises: P shelves (i.e. park), R shelves (i.e. reverse gear), N shelves (i.e. neutral gear), D shelves (i.e. drive shift), S shelves (i.e. 2 fast shelves) and L shelves (i.e. 1 fast shelves).Include multiple gear under wherein said D shelves, be also not quite similar according to the gear that the described D shelves of the difference of manufacturer comprise, establish described D shelves to comprise in the present embodiment: D1 shelves, D2 shelves and D3 shelves.Described automatic transmission 600 is provided with electronic control system, when gear is placed in D shelves, travel condition of vehicle (i.e. the running status of alternating current generator 700 and dynamometer machine 300) is obtained by sensor, be converted into the ECU (Electrical Control Unit) that electric signal is input to described automatic transmission 600, described ECU (Electrical Control Unit) performs the self shifter operation of variator between these 3 gears of D1 shelves, D2 shelves and D3 shelves according to the electric signal received, in addition, the communication between host computer 100 and described automatic transmission 600 is realized by bus in the present embodiment, (described shifting commands comprises control gear at P shelves by the gearshift steering order of driver to utilize host computer 100, R shelves, N shelves, D shelves, the gearshift steering order switched between S shelves and these 6 gears of L shelves, do not comprise in the present embodiment and control gear at D1 shelves, switch between D2 shelves and these 3 gears of D3 shelves, namely described automatic transmission is shifted gears and is not depended on the realization of gearshift steering order under D shelves, but carry out self shifter according to sensor acquisition travel condition of vehicle) send to automatic transmission 600 to control its gearshift as electronic signals.Host computer 100 by bus receive automatic transmission 600 gear shift operation (comprise gear P shelves, R shelves, N shelves, D shelves, between S shelves and L shelves gearshift and shift gears between these 3 gears of D1 shelves, D2 shelves and D3 shelves) feedback signal, record transforming gear and the gearshift moment of described automatic transmission 600.
Described host computer 100 receives input signal, determines the control strategy corresponding to described input signal, and generates steering order according to described control strategy.Described input signal is the indicator signal of automatic transmission 600 being carried out to a certain performance test, and the test event of performance test comprises: transmission efficiency test, test fatigue lifetime, gearshift life test, starting performance test, shifting points validation test and evenly acceleration time test.Concrete test process is following (in following test process, host computer 100, by receiving the feedback signal of described first torque rotary speed sensor 400 and the second torque rotary speed sensor 500, determines described alternating current generator 700 and described dynamometer machine 300 is current whether meets the requirements of operating condition):
1) transmission efficiency test
Described host computer generates steering order according to described control strategy, is specially:
A: described host computer sends the Electric Machine Control instruction driving alternating current generator to be issued to stepping rotating speed in rotating speed pattern to described electric machine controller, meanwhile, the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode is sent to described Dynamometer Control device; Like this, described electric machine controller performs described Electric Machine Control instruction, drives alternating current generator start and reach stepping rotating speed; Described Dynamometer Control device performs described Dynamometer Control instruction, drives dynamometer machine start and reach preset torque.
B: described host computer obtains the value of the stepping rotating speed of the described automatic transmission input end obtained by described first torque and speed sensors measurement, and the value of the Driving Torque of the described automatic transmission obtained by described second torque and speed sensors measurement;
And the transmission efficiency of described automatic transmission under calculating current gear, concrete computation process is: calculate formula: P=(R*N)/9550 according to mechanical output, wherein P represents power, R represents rotating speed, N represents torque, calculates the mechanical output of described automatic transmission input end and output terminal respectively; And pass through the ratio of the mechanical output calculating described input end and output terminal, obtain the transmission efficiency of described automatic transmission under current gear.
C: described host computer sends gearshift steering order to described automatic transmission, and returns step a, until calculate the transmission efficiency of described automatic transmission under each gear and record.
This test event is thus, all performs step a-b, obtain the transmission efficiency under each gear under each gear of automatic transmission.
2) test fatigue lifetime
Described host computer generates steering order according to described control strategy, is specially:
A: described host computer sends the gearshift steering order being switched to S shelves to described automatic transmission; The Electric Machine Control instruction driving described alternating current generator to be issued to rated speed in rotating speed pattern is sent to described electric machine controller, meanwhile, host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device;
B: described host computer sends the gearshift steering order being switched to L shelves to described automatic transmission, the Electric Machine Control instruction driving described alternating current generator to be issued to rated speed in rotating speed pattern is sent to described electric machine controller, meanwhile, host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device;
C: return step a, until described automatic transmission circulates between S shelves and L shelves, the gearshift number of times of gearshift reaches preset value, and records described preset value and circulation shift process time used.
This test event is thus, circulate in S shelves and under L shelves, perform consistent Electric Machine Control instruction and Dynamometer Control instruction, until described automatic transmission circulates between S shelves and L shelves, the gearshift number of times of gearshift reaches preset value, measures the time that circulation shift process is used.
3) gearshift durability test
Described host computer generates steering order according to described control strategy, is specially:
A: described host computer sends the Electric Machine Control instruction driving alternating current generator to start under torque mode to described electric machine controller, simultaneously, host computer sends the Dynamometer Control instruction driving described dynamometer machine to start under rotating speed pattern to described Dynamometer Control device, like this, described electric machine controller performs described Electric Machine Control instruction, drives alternating current generator work; Described Dynamometer Control device performs described Dynamometer Control instruction, drives dynamometer machine work.
B: after described automatic transmission parallel-adder settle-out time under current gear reaches preset value (described preset value can be set as 5 seconds), host computer sends gearshift steering order to described automatic transmission, return step a, until host computer receives the feedback signal of instruction automatic transmission operation irregularity, or the gearshift number of times that described automatic transmission carries out cyclic switching between each gear reaches preset value; Wherein, the large I of rotating speed reached needed for the level of torque reached needed for described alternating current generator under each gear and described dynamometer machine sets according to actual conditions, does not limit to.
This test event is thus, to detect before described cyclic switching number of times reaches preset value described automatic transmission with or without occurring abnormal work situation.The setting value of described preset times is larger, and measuring accuracy is higher, and occurrence can be set as 100,000 times, if automatic transmission still situation generation without exception after cyclic switching preset times between each gear, is then considered as the gearshift life-span qualified.Described abnormal conditions comprise described automatic transmission screens.
4) starting performance test
Described host computer generates steering order according to described control strategy, is specially:
A: described host computer sends the gearshift steering order being switched to D shelves to described automatic transmission; Automatic transmission can according to described dynamometer machine under current torque under D shelves, and the rotation speed change situation of described alternating current generator carries out fluid drive under each gear of D shelves.
B: described host computer sends the Electric Machine Control instruction driving alternating current generator progressively to change the rotating speed of alternating current generator under rotating speed pattern to described electric machine controller, simultaneously, host computer sends the Dynamometer Control instruction driving described dynamometer machine to load Prevailing torque under torque mode to described Dynamometer Control device, wherein, described preset torque direction is contrary with described alternating current generator rotation direction, and limit zero-speed in the other direction, need the friction force overcome when starting with simulating vehicle;
C: described host computer is obtained and records input speed under each gear of D shelves of the described automatic transmission that recorded by described first torque and speed sensors and input torque, and by the output speed that described second torque and speed sensors records, and draw described input speed, input torque and the output speed change curve under each gear of D shelves.
This test event is thus, for adding the airborne Prevailing torque of measurement of power, by changing the rotating speed of alternating current generator, the torque of described alternating current generator and the rotating speed of dynamometer machine adjust automatically, the automatic gear of described automatic transmission under each gear of D shelves can be attended by this process, obtain the above-mentioned service data needed under each gear of D shelves;
5) shifting points validation test
Described host computer generates steering order according to described control strategy, is specially:
A: under current throttle aperture, described host computer sends the gearshift steering order being switched to D shelves to described automatic transmission;
B: described host computer to described electric machine controller send drive alternating current generator to reach D shelves under the Electric Machine Control instruction of theoretical shifting points, simultaneously, host computer sends the Dynamometer Control instruction driving described dynamometer machine to finely tune dynamometer machine rotating speed under rotating speed pattern under described theoretical shifting points to described Dynamometer Control device
C: if host computer receives the feedback signal that described A/T gear position changes, then record the rotating speed (i.e. the input speed of described automatic transmission) of now alternating current generator, otherwise host computer sends the Electric Machine Control instruction of a certain rotating speed switched near theoretical shifting points to described alternating current generator, send the Dynamometer Control instruction driving described dynamometer machine to finely tune dynamometer machine rotating speed under rotating speed pattern under current rotating speed to described Dynamometer Control device simultaneously, until receive the feedback signal that described automatic transmission shifts gears under D shelves, and record described current rotating speed.When gear changes the rotating speed of described alternating current generator be described alternating current generator under current throttle aperture, the shifting points of described automatic transmission under current gear.
D: described host computer sends the Electric Machine Control instruction switching current throttle aperture to described alternating current generator, return step a, until obtain the shifting points of described automatic transmission under different accelerator open degree.
This test event is thus, tests described alternating current generator when operating under different accelerator open degree, the shifting points of described automatic transmission (described shifting points be D shelves D1 shelves, carry out the shifting points that switches between D2 shelves and D3 shelves).
6) evenly acceleration time test
Described host computer generates steering order according to described control strategy, is specially:
A: described host computer sends the gearshift steering order being switched to D shelves to described automatic transmission;
B: under each gear of D shelves, host computer is to driving described alternating current generator to start under described electric machine controller is emitted in torque mode and regulating the steering order of the torque of described alternating current generator, meanwhile, host computer sends the steering order driving dynamometer machine to load preset torque to described Dynamometer Control device; In this process, the input speed of described automatic transmission, input torque and output speed change thereupon;
C: described host computer obtains and records the input speed of described automatic transmission, input torque and output speed, and draw described input speed, input torque and output speed from the change curve started to during a gearshift has circulated, and record gearshift each time starts to having shifted gears the required time, wherein, a described gearshift circulation completes and refers to be switched to D2 shelves, D3 shelves, D2 shelves, D1 shelves successively from D1 shelves.
This test event is thus, when preset torque is in by described dynamometer machine, regulate the torque of described alternating current generator, the input speed of described automatic transmission, input torque is corresponding with output speed to change, this process is attended by the gear switch of described automatic transmission under D shelves, obtains the time of carrying out circulating needed for gearshift under D shelves.
The real-time running data of the described automatic transmission of above-mentioned record is the foundation of described automatic transmission being carried out to performance test.Compare for described real-time running data and predetermined standard service data (i.e. performance index), the quality of described automatic transmission performance can be judged according to comparison result.
From embodiment one, the embodiment of the present invention drives alternating current generator by electric machine controller, braking equipment using described alternating current generator as described automatic transmission, drive described dynamometer machine by Dynamometer Control device simultaneously, loading equipemtn using described dynamometer machine as described automatic transmission, simulates the running environment of automatic transmission.Host computer is by receiving input signal, determine the control strategy corresponding to described input signal, and generate steering order according to described control strategy, simultaneously, receive described first torque rotary speed sensor, the second torque rotary speed sensor and automatic transmission feedback signal and according to feedback signal described in described control strategy process, the real-time running data of described automatic transmission under varying input signal is obtained, to complete the Performance Detection of described automatic transmission with this.Wherein, described service data is the foundation of testing described automatic transmission performance test; Described steering order comprises: Electric Machine Control instruction, control Dynamometer Control device for controlling the running of electric machine controller drive motor drive the Dynamometer Control instruction of dynamometer machine running and control the gearshift steering order of automatic transmission shift.
See Fig. 2, based on embodiment one, the embodiment of the present invention two discloses automatic transmission Performance Test System described in another, also comprises: be connected with described host computer, the electric machine controller receiving described Electric Machine Control instruction and the alternating current generator be connected with described electric machine controller.Concrete, described automatic transmission Performance Test System comprises: host computer 100, Dynamometer Control device 200, dynamometer machine 300, first torque rotary speed sensor 400, second torque rotary speed sensor 500, alternating current generator 700 and electric machine controller 800, carries out performance test for the system under test (SUT) for being only configured with automatic transmission 600.
Compared with embodiment one, Performance Test System disclosed in the present embodiment self is configured with electric machine controller 800 and alternating current generator 700, can directly test the system under test (SUT) only providing automatic transmission 600, described alternating current generator 700 is treated to be connected with the input shaft of described automatic transmission 600 by described first torque rotary speed sensor 400, described automatic transmission 600 is connected with described host computer 100, and after described dynamometer machine 300 is connected with the output shaft of described automatic transmission 600 by described second torque rotary speed sensor 500, test macro can be started and start test job.
Wherein, described Dynamometer Control device 200 adopts and hands over-straight-friendship type varying-voltage frequency converter.
Described electric machine controller 800 can adopt the inverter using direct current as power supply, now, needs the DC power cabinet for described test macro additional configuration is connected with described electric machine controller; Or, the assembly of described inverter and described DC power cabinet can directly adopt friendship-straight-friendship type varying-voltage frequency converter to replace, namely described electric machine controller 800 directly can adopt friendship-straight-friendship type varying-voltage frequency converter, and the present embodiment is namely using friendship-straight-friendship type varying-voltage frequency converter as described electric machine controller 800.
As preferably, described automatic transmission Performance Test System also comprises: the Oil-temperature control device 900 be connected with described automatic transmission.
In automatic transmission 600 course of work, can high temperature be produced, if do not carry out effective cooling will cause that oily vapour touches from air hole, the various faults such as clutch coupling or brake bush scaling loss, jeopardize the safe operation of described automatic transmission 600.For this reason, need for described automatic transmission 600 designs Oil-temperature control device 900, described Oil-temperature control device 900 detects the oil temperature of described automatic transmission 600 in real time by temperature sensor, trip temperature of going forward side by side regulates, and ensures that described automatic transmission 600 (is generally between 50 DEG C ~ 80 DEG C) in the normal range of oil temperature and carries out performance test.
In addition, also can comprise: the direct current measurement be connected with host computer switches cabinet 110 and exports measures cabinet 120,
System power supply switches cabinet 110 through described direct current measurement and accesses described electric machine controller 800, and described output is measured cabinet 120 and is arranged between described electric machine controller 800 and described alternating current generator 700.Described direct current measurement switches cabinet 110 for measuring the electric current and voltage inputting described alternating current generator 700, and is provided with the switch for controlling its place connecting and disconnecting of the circuit; Described output measures cabinet 120 for measuring the electric current and voltage exporting described alternating current generator 700.
Host computer 100 switches cabinet 110 by the described direct current measurement obtained and exports the metrical information measuring cabinet 120, whether the working condition detecting described electric machine controller 800 is normal, if described metrical information indicates described electric machine controller 800 abnormal, then host computer 100 sends out code to described direct current measurement switching cabinet 110, cut off the system power supply inlet wire of described electric machine controller 800 input end, avoid damaging.
In addition, also can comprise: system power supply accesses described Dynamometer Control device 800 through described cutting-in control cabinet 130.
Dynamometer machine 300, as the electric power loading equipemtn of automatic transmission, can realize automatic transmission torque and load or realize rotating speed loading.By introducing cutting-in control cabinet, the electric energy that described dynamometer machine sends can feed back to isolating transformer rear end, replenishment system power supply, to save electric energy.
Wherein, the system power supply of described automatic transmission 600 Performance Test System comprises: the power supply be connected with electric network source inputs cabinet 140 and isolating transformer 130.In described test macro, electric network source introduces described automatic transmission Performance Test System by power supply input cabinet 140 and isolating transformer 130, forms system power supply; Concrete, electric network source accesses described power supply input cabinet 140, is connected with the power input of described isolating transformer 130; The power output end of described isolating transformer 130 is system power supply output terminal.
Wherein, described power supply input cabinet 140 uses as the total input-wire power cabinet of described automatic transmission Performance Test System.Described isolating transformer 130, for making automatic transmission Performance Test System internal electric source and electric network source isolation, to suppress the electrical energy power quality disturbance of electrical network, ensures the stable of described automatic transmission test macro internal power source voltage.
Based on above-mentioned any embodiment, the embodiment of the present invention three discloses another automatic transmission Performance Test System, also comprises: be placed in described automatic transmission periphery, for detecting the temperature sensor of described automatic transmission organism temperature;
Described temperature sensor is connected with described host computer, and described host computer is also for the treatment of the feedback signal that described temperature sensor records.
Described input signal also comprises the signal that the described test macro of instruction carries out temperature rise test, and described host computer generates steering order according to described control strategy and is specially:
A: described host computer sends to described electric machine controller and drives alternating current generator to be issued in rotating speed pattern the Electric Machine Control instruction that motor speed is greater than rated speed, host computer sends the Dynamometer Control instruction forbidding driving described dynamometer machine to described Dynamometer Control device simultaneously, and described dynamometer machine does not start;
B: under current gear, host computer Real-time Obtaining also records the data that described temperature sensor measurement obtains, until described fluid drive actuator temperature stops rising or temperature rises to limit value.
C: described host computer sends gearshift steering order to described automatic transmission, returns step a, until the temperature rise data of described automatic transmission under acquiring each gear.
Thus, can complete the temperature rise of described automatic transmission is tested.
Based on above-mentioned any embodiment, the embodiment of the present invention four discloses another automatic transmission Performance Test System, also comprises noise meter;
Described host computer is also for the treatment of the noise information recorded by described noise meter.
Described host computer generates steering order according to described control strategy and is specially:
A: described host computer sends the Electric Machine Control instruction driving alternating current generator to be issued to rated speed in rotating speed pattern to described electric machine controller, host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device simultaneously.
B: obtain the noise size in described automatic transmission periphery predetermined position by noise meter, and be input in host computer.Described periphery predeterminated position can be set as in automatic transmission, and direction, front, rear, left and right is apart from the position of described automatic transmission two meters.
C: described host computer sends gearshift steering order to described automatic transmission, returns step a, until the noise testing data of described automatic transmission under acquiring each gear.
The noise testing to described automatic transmission can be completed thus.
In sum, the embodiment of the present invention drives alternating current generator by electric machine controller, braking equipment using described alternating current generator as described automatic transmission, drive described dynamometer machine by Dynamometer Control device simultaneously, loading equipemtn using described dynamometer machine as described automatic transmission, simulates the running environment of automatic transmission.Host computer is by receiving input signal, determine the control strategy corresponding to described input signal, and generate steering order according to described control strategy, simultaneously, receive described first torque rotary speed sensor, the second torque rotary speed sensor and automatic transmission feedback signal and according to feedback signal described in described control strategy process, the real-time running data of described automatic transmission under varying input signal is obtained, to complete the Performance Detection of described automatic transmission with this.Wherein, described service data is the foundation of testing described automatic transmission performance test; Described steering order comprises: for controlling Electric Machine Control instruction that electric machine controller drive motor (described motor employing alternating current generator) operates, control Dynamometer Control device and drive the Dynamometer Control instruction of dynamometer machine running and control the gearshift steering order of automatic transmission shift.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the embodiment of the present invention, can realize in other embodiments.Therefore, the embodiment of the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (1)
1. an automatic transmission Performance Test System, is characterized in that, comprising:
Host computer, Dynamometer Control device, dynamometer machine, the first torque rotary speed sensor and the second torque rotary speed sensor; Wherein: described Dynamometer Control device adopts hands over-straight-friendship type varying-voltage frequency converter,
Described first torque rotary speed sensor is used for being connected with the input shaft of automatic transmission, and described second torque rotary speed sensor is used for being connected with the output shaft of automatic transmission;
Described Dynamometer Control device is connected with described dynamometer machine, and described Dynamometer Control device, the first torque rotary speed sensor are connected with described host computer respectively with the second torque rotary speed sensor;
Described host computer receives input signal, determines the control strategy corresponding to described input signal, and generates steering order according to described control strategy; Described steering order comprises Electric Machine Control instruction, Dynamometer Control instruction and gearshift steering order; Described Electric Machine Control instruction is for controlling the running of electric machine controller drive motor; Described Dynamometer Control instruction drives dynamometer machine running for controlling Dynamometer Control device; Described gearshift steering order is for controlling automatic transmission shift;
Described host computer receive described first torque rotary speed sensor, the second torque rotary speed sensor and automatic transmission feedback signal and according to feedback signal described in described control strategy process;
Wherein, described input signal is the indicator signal of described automatic transmission being carried out to performance test, and the test event of performance test comprises: transmission efficiency test, test fatigue lifetime, gearshift life test, starting performance test, shifting points validation test and evenly acceleration time test;
When described test event is transmission efficiency test, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send to described electric machine controller drive motor to be issued to stepping rotating speed Electric Machine Control instruction in rotating speed pattern, meanwhile, the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode is sent to described Dynamometer Control device;
B, described host computer obtain the stepping rotating speed of the described automatic transmission input end obtained by described first torque rotary speed sensor measurement, and the Driving Torque of the described automatic transmission to be obtained by described second torque rotary speed sensor measurement, and the transmission efficiency of described automatic transmission under calculating current gear;
C, described host computer send gearshift steering order to described automatic transmission, and return step a, until the transmission efficiency calculated under each gear of described automatic transmission record;
When described test event be test fatigue lifetime time, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the gearshift steering order being switched to S shelves to described automatic transmission; The Electric Machine Control instruction driving described motor to be issued to rated speed in rotating speed pattern is sent to described electric machine controller, meanwhile, host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device;
B, described host computer send the gearshift steering order being switched to L shelves to described automatic transmission, the Electric Machine Control instruction driving described motor to be issued to rated speed in rotating speed pattern is sent to described electric machine controller, meanwhile, host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device;
C, return step a, until described automatic transmission circulates between S shelves and L shelves, the gearshift number of times of gearshift reaches preset value, and records described preset value and circulation shift process time used;
When described test event is for gearshift life test, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send to described electric machine controller the Electric Machine Control instruction that drive motor starts under torque mode, and host computer sends the Dynamometer Control instruction driving described dynamometer machine to start under rotating speed pattern to described Dynamometer Control device simultaneously;
B, described automatic transmission are after under current gear, parallel-adder settle-out time reaches preset value, described host computer sends gearshift steering order to described automatic transmission, return step a, until host computer receives the feedback signal of instruction automatic transmission operation irregularity, or the gearshift number of times that described automatic transmission carries out cyclic switching between each gear reaches preset value;
When described test event is starting performance test, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the gearshift steering order being switched to D shelves to described automatic transmission; Described automatic transmission can according to described dynamometer machine under current torque under D shelves, and the rotation speed change situation of described motor carries out fluid drive under each gear of D shelves;
B, described host computer send to described electric machine controller the Electric Machine Control instruction that drive motor progressively changes the rotating speed of motor under rotating speed pattern, host computer sends the Dynamometer Control instruction driving described dynamometer machine to load Prevailing torque under torque mode to described Dynamometer Control device simultaneously, wherein said Prevailing torque direction is contrary with described motor rotation direction, and limits zero-speed in the other direction;
C, described host computer are obtained and record input speed under each gear of D shelves of the described automatic transmission that recorded by described first torque rotary speed sensor and input torque, and by the output speed that described second torque rotary speed sensor records, and draw described input speed, input torque and the output speed change curve under each gear of D shelves;
When described test event is shifting points validation test, described host computer generates steering order according to described control strategy, is specially:
A, under current throttle aperture, described host computer sends the gearshift steering order being switched to D shelves to described automatic transmission;
B, described host computer to described electric machine controller send drive motor reach D shelves under the Electric Machine Control instruction of theoretical shifting points, simultaneously, host computer sends the Dynamometer Control instruction driving described dynamometer machine to finely tune dynamometer machine rotating speed under rotating speed pattern under described theoretical shifting points to described Dynamometer Control device
If the described host computer of c receives the feedback signal that described A/T gear position changes, then record the input speed of now described automatic transmission, otherwise described host computer sends the Electric Machine Control instruction of a certain rotating speed switched near theoretical shifting points to described motor, send the Dynamometer Control instruction driving described dynamometer machine to finely tune dynamometer machine rotating speed under rotating speed pattern under current rotating speed to described Dynamometer Control device simultaneously, until receive the feedback signal that described automatic transmission shifts gears under D shelves, and record described current rotating speed;
D, described host computer send the Electric Machine Control instruction switching current throttle aperture to described motor, return step a, until obtain the shifting points of described automatic transmission under different accelerator open degree;
When described test event is the test of even acceleration time, described host computer generates steering order according to described control strategy and is specially:
A, described host computer send the gearshift steering order being switched to D shelves to described automatic transmission;
B, under each gear of D shelves, host computer is to driving described electric motor starting under described electric machine controller is emitted in torque mode and regulating the Electric Machine Control instruction of the torque of described motor; Meanwhile, host computer sends the Dynamometer Control instruction driving dynamometer machine to load preset torque to described Dynamometer Control device;
C, described host computer obtain and record the input speed of described automatic transmission, input torque and output speed, and draw described input speed, input torque and output speed from the change curve started to during a gearshift has circulated, and record gearshift each time starts to having shifted gears the required time, wherein, a described gearshift circulation completes and refers to be switched to D2 shelves, D3 shelves, D2 shelves, D1 shelves successively from D1 shelves;
Described automatic transmission Performance Test System, also comprises noise meter; Described host computer is also for the treatment of the noise information recorded by described noise meter;
Described host computer generates steering order according to described control strategy and is specially:
A, described host computer send to described electric machine controller drive motor to be issued to rated speed Electric Machine Control instruction in rotating speed pattern, and host computer sends the Dynamometer Control instruction driving described dynamometer machine to be issued to preset torque at torque mode to described Dynamometer Control device simultaneously;
B, to be obtained in the noise size of described automatic transmission periphery predetermined position by noise meter, and be input in host computer;
C, described host computer send gearshift steering order to described automatic transmission, return step a, until the noise testing data of described automatic transmission under acquiring each gear;
Described automatic transmission Performance Test System also comprises the temperature sensor for detecting described automatic transmission organism temperature;
Described temperature sensor is connected with described host computer;
Described host computer generates steering order according to described control strategy, is specially:
A, described host computer send drive motor to described electric machine controller and are issued in rotating speed pattern the Electric Machine Control instruction that motor speed is greater than rated speed, and host computer sends the Dynamometer Control instruction forbidding driving described dynamometer machine to described Dynamometer Control device simultaneously;
B, under current gear, host computer Real-time Obtaining also records the data that described temperature sensor measurement obtains, until described fluid drive actuator temperature stops rising or temperature rises to limit value;
C, described host computer send gearshift steering order to described automatic transmission, return step a, until the temperature rise data of described automatic transmission under acquiring each gear;
Described automatic transmission Performance Test System, also comprises: be connected with described host computer, the electric machine controller receiving described Electric Machine Control instruction and the alternating current generator be connected with described electric machine controller.
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| CN105890893A (en) * | 2014-12-25 | 2016-08-24 | 青岛豪利达汽车设备制造有限公司 | Transmission running-in test bench |
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| CN106872827B (en) * | 2017-03-10 | 2020-11-13 | 北京理工大学 | Dynamic testing system and method for electric transmission mechanism of electric vehicle |
| CN108427285B (en) * | 2018-04-09 | 2021-04-02 | 天津大学 | Rotating speed self-adaptive control system and method for engine pedestal |
| CN108613804A (en) * | 2018-04-28 | 2018-10-02 | 徐州徐工传动科技有限公司 | A kind of gearbox commutation gear clutch durability test apparatus and test method |
| CN109521364A (en) * | 2019-01-02 | 2019-03-26 | 莱茵技术监护（深圳）有限公司 | Parameter identifier system |
| CN110426199A (en) * | 2019-08-07 | 2019-11-08 | 广东交通职业技术学院 | A kind of detection device of electric automobile gear device performance |
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