CN103245503A - Automatic transmission performance testing system - Google Patents
Automatic transmission performance testing system Download PDFInfo
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- CN103245503A CN103245503A CN2013101902376A CN201310190237A CN103245503A CN 103245503 A CN103245503 A CN 103245503A CN 2013101902376 A CN2013101902376 A CN 2013101902376A CN 201310190237 A CN201310190237 A CN 201310190237A CN 103245503 A CN103245503 A CN 103245503A
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Abstract
The embodiment of the invention discloses an automatic transmission performance testing system, which comprises an upper computer, a dynamometer controller, a dynamometer, a first torque and revolution speed transducer and a second torque and revolution speed transducer, wherein the dynamometer, the first torque and revolution speed transducer and the second torque and revolution speed transducer are connected with the upper computer respectively; the first torque and revolution speed transducer is connected with an input shaft of an automatic transmission; the second torque and revolution speed transducer is connected with an output shaft of the automatic transmission; the dynamometer controller is connected with the dynamometer; and the upper computer receives an input signal, determines a control strategy corresponding to the input signal and generates corresponding motor control instruction, dynamometer control instruction and gearshift control instruction according to the control strategy, and receives feedback signals of the first torque and revolution speed transducer, the second torque and revolution speed transducer and the automatic transmission and processes the feedback signals according to the control strategy so as to realize performance testing of the automatic transmission.
Description
Technical field
The present invention relates to the 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 a kind ofly can come self-shifting equipment according to engine operating condition and the speed of a motor vehicle, can change ratio of gear and the torque ratio of vehicle according to the variation of vehicle running resistance automatically, alleviates driver's labour intensity.
In order to guarantee that automatic transmission can operate as normal, usually need carry out performance test to automatic transmission, concrete, generally need 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 the prior art, can't realize the performance test of automatic transmission.
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 comprises:
Host computer, Dynamometer Control device, dynamometer machine, first torque rotary speed sensor and second torque rotary speed sensor; Wherein:
Described first torque rotary speed sensor is used for linking to each other with the input shaft of automatic transmission, and described second torque rotary speed sensor is used for linking to each other with the output shaft of automatic transmission;
Described Dynamometer Control device links to each other with described dynamometer machine, and described Dynamometer Control device, first torque rotary speed sensor and second torque rotary speed sensor link to each other with described host computer respectively;
Described host computer receives input signal, determines and the corresponding control strategy of 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 used for the running of control electric machine controller drive motor; Described Dynamometer Control instruction is used for control Dynamometer Control device and drives the dynamometer machine running; Described gearshift steering order is used for the gearshift of control automatic transmission;
Described host computer receives the feedback signal of described first torque rotary speed sensor, second torque rotary speed sensor and automatic transmission and handles described feedback signal according to described control strategy.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send drive motor is issued to the stepping rotating speed in the rotating speed pattern Electric Machine Control instruction to described electric machine controller, simultaneously, send the described dynamometer machine of driving is issued to default torque at torque mode Dynamometer Control instruction to described Dynamometer Control device;
B, described host computer obtain the stepping rotating speed of the described automatic transmission input end that is measured by described first torque and speed sensors, and by described second torque and speed sensors measure to the output torque of described automatic transmission, and calculate the transmission efficiency of described automatic transmission under the current gear;
C, described host computer send the gearshift steering order to described automatic transmission, and return step a, until the transmission efficiency and the record that calculate under each gear of described automatic transmission.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the gearshift steering order that switches to the S shelves to described automatic transmission; Send the described motor of driving is issued to rated speed in the rotating speed pattern Electric Machine Control instruction to described electric machine controller, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine is issued to default torque at torque mode Dynamometer Control instruction;
B, described host computer send the gearshift steering order that switches to the L shelves to described automatic transmission, send the described motor of driving is issued to rated speed in the rotating speed pattern Electric Machine Control instruction to described electric machine controller, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine is issued to default torque at torque mode Dynamometer Control instruction;
C, return step a, reach preset value until between S shelves and L shelves, the circulate gearshift number of times of gearshift of described automatic transmission, and record described preset value and used time of circulation shift process.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the Electric Machine Control instruction that drive motor starts to described electric machine controller under torque mode, host computer sends to described Dynamometer Control device and drive the Dynamometer Control instruction that described dynamometer machine starts under the rotating speed pattern simultaneously;
B, described automatic transmission are after parallel-adder settle-out time reaches preset value under the current gear, described host computer sends the gearshift steering order to described automatic transmission, return step a, receive the feedback signal of indication automatic transmission operation irregularity until host computer, or the described automatic transmission gearshift number of times that switches that circulates reaches preset value between each gear.
Wherein, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the gearshift steering order that switches to the D shelves to described automatic transmission; Described automatic transmission is can be according to described dynamometer machine under current torque under the D shelves, and described rotating speed of motor situation of change is carried out fluid drive under each gear of D shelves;
B, described host computer send drive motor progressively changes rotating speed of motor under the rotating speed pattern Electric Machine Control instruction to described electric machine controller, host computer sends the described dynamometer machine of driving to described Dynamometer Control device and load the Dynamometer Control instruction of presetting torque under torque mode simultaneously, wherein said preset torque direction is opposite with described motor rotation direction, and limits zero-speed in the other direction;
C, described host computer obtain and record input speed and the input torque of described automatic transmission under each gear of D shelves that records by described first torque and speed sensors, and the output speed that records by described second torque and speed sensors, 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 the current throttle aperture, described host computer sends the gearshift steering order that switches to the D shelves to described automatic transmission;
B, described host computer send the Electric Machine Control instruction that drive motor reaches theoretical shifting points under the D shelves to described electric machine controller, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine in the Dynamometer Control instruction of fine setting dynamometer machine rotating speed under described theoretical shifting points under the rotating speed pattern
C, if described host computer receive the feedback signal that described A/T gear position changes, then record the input speed of described automatic transmission this moment, otherwise described host computer sends the Electric Machine Control instruction that switches near a certain rotating speed the theoretical shifting points to described motor, send to described Dynamometer Control device simultaneously and drive described dynamometer machine in the Dynamometer Control instruction of fine setting dynamometer machine rotating speed under current rotating speed under the rotating speed pattern, until receiving the feedback signal that described automatic transmission is shifted gears under the D shelves, and record described current rotating speed;
D, described host computer send the Electric Machine Control instruction of switching the current throttle aperture to described motor, return step a, until obtaining the shifting points of described automatic transmission under different accelerator open degrees.
Wherein, described host computer is specially according to described control strategy generation steering order:
A, described host computer send the gearshift steering order that switches to the D shelves to described automatic transmission;
B, under each gear of D shelves, host computer is emitted under the torque mode Electric Machine Control instruction of the torque that drives described electric motor starting and regulate described motor to described electric machine controller; Simultaneously, host computer sends to described Dynamometer Control device and drives the Dynamometer Control instruction that dynamometer machine loads preset torque;
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 starting to the change curve during a gearshift circulation is finished, and record gearshift each time begins to finish the required time to gearshift, wherein, a described gearshift circulation is finished finger and is switched to D2 shelves, D3 shelves, D2 shelves, D1 shelves successively from the D1 shelves.
Alternatively, also comprise noise meter; Described host computer is also for the treatment of the noise information that records by described noise meter;
Described host computer generates steering order according to described control strategy and is specially:
A, described host computer send drive motor to described electric machine controller and instruct in the Electric Machine Control that the rotating speed pattern is issued to rated speed, and host computer sends to described Dynamometer Control device and drives described dynamometer machine is issued to default torque at torque mode Dynamometer Control instruction simultaneously;
B, obtain noise size in described automatic transmission periphery predetermined position by noise meter, and be input in the host computer;
C, described host computer send the gearshift steering order to described automatic transmission, return step a, until the noise testing data that acquire described automatic transmission under each gear.
Alternatively, also comprise temperature sensor for detection of 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 to motor speed greater than the Electric Machine Control instruction of rated speed in the rotating speed pattern, and host computer sends the Dynamometer Control instruction of forbidding driving described dynamometer machine to described Dynamometer Control device simultaneously;
B, under current gear, host computer obtains and records the data that described temperature sensor measurement obtains in real time, stops to rise or temperature rises to limit value up to described fluid drive actuator temperature;
C, described host computer send the gearshift steering order to described automatic transmission, return step a, until the temperature rise data that acquire described automatic transmission under each gear.
Alternatively, also comprise: link to each other with described host computer, receive the electric machine controller and the alternating current generator that links to each other with described electric machine controller of described Electric Machine Control instruction.
From above-mentioned technical scheme as can be seen, the embodiment of the invention drives alternating current generator work by electric machine controller, with the braking equipment of described alternating current generator as described automatic transmission, drive described dynamometer machine work by the Dynamometer Control device simultaneously, with the loading equipemtn of described dynamometer machine as described automatic transmission, simulate the running environment of automatic transmission.Host computer is by receiving input signal, determine and the corresponding control strategy of described input signal, and generate steering order according to described control strategy and (comprise the Electric Machine Control instruction for the running of control electric machine controller drive motor, control Dynamometer Control device drives the gearshift steering order of Dynamometer Control instruction and the gearshift of control automatic transmission of dynamometer machine running), simultaneously, receive described first torque rotary speed sensor, the feedback signal of second torque rotary speed sensor and automatic transmission is also handled described feedback signal according to described control strategy, the real-time running data that described host computer obtains described automatic transmission when carrying out work under varying input signal, and finish the Performance Detection of described automatic transmission according to described service data.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the embodiment of the invention one disclosed a kind of automatic transmission Performance Test System structural representation;
Fig. 2 is the embodiment of the invention two disclosed another automatic transmission Performance Test System structural representation.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 1, the embodiment of the 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 second torque rotary speed sensor 500;
Wherein, described first torque rotary speed sensor 400 is used for linking to each other with the input shaft of automatic transmission, and described second torque rotary speed sensor 500 is used for linking to each other with the output shaft of automatic transmission;
Described Dynamometer Control device 200 links to each other with described dynamometer machine 300, and described Dynamometer Control device 200, first torque rotary speed sensor 400 and second torque rotary speed sensor 500 link to each other with described host computer 100 respectively;
Described host computer 100 receives input signal, determines and the corresponding control strategy of 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 used for the running of control electric machine controller drive motor; Described Dynamometer Control instruction is used for control Dynamometer Control device 200 and drives dynamometer machine 300 runnings; Described gearshift steering order is used for the gearshift of control automatic transmission;
Described host computer 100 receives the feedback signal of described first torque rotary speed sensor 400, second torque rotary speed sensor 500 and automatic transmission and handles described feedback signal according to described control strategy.
Described automatic transmission Performance Test System can be applicable to dispose the electric automobile manufacturer of automatic transmission 600, alternating current generator 700 and electric machine controller 800, carry out performance test for described used for electric vehicle automatic transmission 600, system under test (SUT) comprises automatic transmission 600, alternating current generator 700 and the electric machine controller 800 of electric automobile.
Connect the wiring between described automatic transmission Performance Test System and the described system under test (SUT), concrete, described electric machine controller 800 links to each other with described host computer 100 respectively with described automatic transmission 600; Described dynamometer machine 300 is connected (end that is 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 with the output shaft of described automatic transmission 600; Described electric machine controller 800 links to each other with described alternating current generator 700, described alternating current generator 700 is connected (end that is 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 with the input shaft of described automatic transmission 600.After wiring is finished, can start test macro and begin test job.
Wherein, described first torque rotary speed sensor 400 is used for measuring the rotating speed of described automatic transmission 600 input ends and rotating speed and the torque that torque, described second torque rotary speed sensor 500 are used for measuring described automatic transmission 600 output terminals.The driving arrangement that described alternating current generator 700 is used for as automatic transmission 600, the electric power loading equipemtn (but friction force that simulating vehicle load or vehicle need overcome) that described dynamometer machine 300 is used for as automatic transmission 600.
Wherein, described Dynamometer Control device 200 can adopt friendship-straight-friendship type varying-voltage frequency converter, and this frequency converter becomes direct current to the alternating current of constant pressure and constant rate " rectification " earlier, again direct current " inversion " is become all adjustable three-phase alternating currents of voltage and frequency.Owing to become the link ratio of alternating current to be easier to control, remarkable advantages is arranged aspect the characteristic of the motor in the range of adjustment of frequency with after improving variability of the frequency converter by the method design to dc inverter.Concrete, can adopt friendship-straight-friendship type varying-voltage frequency converter of the ACS800 series of ABB brand.Described electric machine controller 800 essence are inverter.Described automatic transmission Performance Test System power supply (hereinafter to be referred as " system's power supply ") is alternating current, consider described inverter with direct current as power supply, need be for described inverter configuring direct current power cabinet, concrete, described DC power cabinet links to each other with described electric machine controller 800.Described dynamometer machine 300 adopts electric A.C. dynamometer.
Need to prove that wherein the gear of described automatic transmission 600 generally comprises: P shelves (being park), R shelves (being reverse gear), N shelves (being neutral gear), D shelves (being drive shift), S shelves (i.e. 2 speed shelves) and L shelves (i.e. 1 speed shelves).Include a plurality of gears under the wherein said D shelves, the gear that comprises in the different described D shelves according to manufacturer also is not quite similar, and establishes described D shelves in the present embodiment and comprises: D1 shelves, D2 shelves and D3 shelves.Described automatic transmission 600 is provided with electronic control system, when gear places the D shelves, can obtain travel condition of vehicle (being the running status of alternating current generator 700 and dynamometer machine 300) by sensor, be converted into electric signal and be input to the ECU (Electrical Control Unit) of described automatic transmission 600, described ECU (Electrical Control Unit) is carried out the self shifter operation of variator between these 3 gears of D1 shelves, D2 shelves and D3 shelves according to the electric signal that receives; In addition, realize communication between host computer 100 and the described automatic transmission 600 by bus in the present embodiment, (described shifting commands comprises that the control gear is at the P shelves with driver's gearshift steering order to utilize host computer 100, the R shelves, the N shelves, the D shelves, the gearshift steering order of switching between these 6 gears of S shelves and L shelves, do not comprise in the present embodiment that the control gear is at the D1 shelves, switch between these 3 gears of D2 shelves and D3 shelves, be that described automatic transmission is shifted gears under the D shelves and do not depended on the gearshift steering order and realize, carry out self shifter but obtain travel condition of vehicle according to sensor) send to automatic transmission 600 to control its gearshift with the form of electric signal.Host computer 100 receives the feedback signal of automatic transmission 600 gear shift operation (comprise gear in gearshift between P shelves, R shelves, N shelves, D shelves, S shelves and the L shelves and shift gears) by bus between these 3 gears of D1 shelves, D2 shelves and D3 shelves, record the transforming gear of described automatic transmission 600 and gearshift constantly.
Described host computer 100 receives input signal, determines and the corresponding control strategy of described input signal, and generates steering order according to described control strategy.Described input signal is the indicator signal that automatic transmission 600 is carried out 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 the following test process, host computer 100 is determined described alternating current generator 700 and the described dynamometer machine 300 current operating conditions that whether meet the requirements of by receiving the feedback signal of described first torque rotary speed sensor 400 and second torque rotary speed sensor 500):
1) transmission efficiency test
Described host computer generates steering order according to described control strategy, is specially:
A: described host computer sends to described electric machine controller and drives alternating current generator is issued to the stepping rotating speed in the rotating speed pattern Electric Machine Control instruction, simultaneously, send the described dynamometer machine of driving is issued to default torque at torque mode Dynamometer Control instruction to described Dynamometer Control device; Like this, described electric machine controller is carried out described Electric Machine Control instruction, drives the alternating current generator startup and reaches the stepping rotating speed; Described Dynamometer Control device is carried out described Dynamometer Control instruction, drives the dynamometer machine startup and reaches default torque.
B: described host computer obtains the value of the stepping rotating speed of the described automatic transmission input end that is measured by described first torque and speed sensors, and the value of the output torque of the described automatic transmission that is measured by described second torque and speed sensors;
And calculate the transmission efficiency of described automatic transmission under the current gear, concrete computation process is: calculate formula: P=(R*N)/9550 according to mechanical output, wherein P represents power, and R represents rotating speed, N represents torque, calculates the mechanical output of described automatic transmission input end and output terminal respectively; And the ratio of the mechanical output by calculating described input end and output terminal, obtain the transmission efficiency of described automatic transmission under current gear.
C: described host computer sends the gearshift steering order to described automatic transmission, and returns step a, until calculating transmission efficiency and the record of described automatic transmission under each gear.
This test event is thus, and equal execution in step a-b obtains 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 that switches to the S shelves to described automatic transmission; Send the described alternating current generator of driving is issued to rated speed in the rotating speed pattern Electric Machine Control instruction to described electric machine controller, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine is issued to default torque at torque mode Dynamometer Control instruction;
B: described host computer sends the gearshift steering order that switches to the L shelves to described automatic transmission, send the described alternating current generator of driving is issued to rated speed in the rotating speed pattern Electric Machine Control instruction to described electric machine controller, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine is issued to default torque at torque mode Dynamometer Control instruction;
C: return step a, reach preset value until between S shelves and L shelves, the circulate gearshift number of times of gearshift of described automatic transmission, and record described preset value and used time of circulation shift process.
This test event is thus, circulate in S shelves Electric Machine Control instruction and the Dynamometer Control instruction consistent with execution under the L shelves, reach preset value until between S shelves and L shelves, the circulate gearshift number of times of gearshift of described automatic transmission, measure the circulation used time of shift process.
3) gearshift durability test
Described host computer generates steering order according to described control strategy, is specially:
A: described host computer sends to described electric machine controller and drive the Electric Machine Control instruction that alternating current generator starts under torque mode, simultaneously, host computer sends to described Dynamometer Control device and drive the Dynamometer Control instruction that described dynamometer machine starts under the rotating speed pattern, like this, described electric machine controller is carried out described Electric Machine Control instruction, drives alternating current generator work; Described Dynamometer Control device is carried out described Dynamometer Control instruction, drives dynamometer machine work.
B: described automatic transmission is after parallel-adder settle-out time under the current gear reaches preset value (described preset value can be set at for 5 seconds), host computer sends the gearshift steering order to described automatic transmission, return step a, receive the feedback signal of indication automatic transmission operation irregularity until host computer, or the described automatic transmission gearshift number of times that switches that circulates reaches preset value between each gear; Wherein, the required level of torque that reaches of described alternating current generator and the big I of the required rotating speed that reaches of described dynamometer machine are set according to actual conditions under each gear, do not limit to.
This test event is thus, and detection described automatic transmission before described circulation switching times reaches preset value has or not the abnormal work situation that occurs.The setting value of described preset times is more big, and measuring accuracy is more high, and occurrence can be set at 100,000 times, if automatic transmission still no abnormal situation generation after preset times is switched in circulation between each gear, the life-span that then is considered as shifting gears is 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 that switches to the D shelves to described automatic transmission; Automatic transmission is can be according to described dynamometer machine under current torque under the D shelves, and the rotation speed change situation of described alternating current generator is carried out fluid drive under each gear of D shelves.
B: described host computer sends to described electric machine controller and drives alternating current generator progressively changes the rotating speed of alternating current generator under the rotating speed pattern Electric Machine Control instruction, simultaneously, host computer sends the described dynamometer machine of driving to described Dynamometer Control device and load the Dynamometer Control instruction of presetting torque under torque mode, wherein, described preset torque direction is opposite with described alternating current generator rotation direction, and limit zero-speed, the friction force that need overcome when starting with simulating vehicle in the other direction;
C: described host computer obtains and records input speed and the input torque of described automatic transmission under each gear of D shelves that records by described first torque and speed sensors, and the output speed that records by described second torque and speed sensors, and draw described input speed, input torque and the output speed change curve under each gear of D shelves.
This test event is thus, measurement of power is airborne to preset torque in order to add, by changing the rotating speed of alternating current generator, the torque of described alternating current generator and the rotating speed of dynamometer machine are adjusted automatically, can be attended by the automatic gear of described automatic transmission under each gear of D shelves in this process, obtain the above-mentioned service data that under each gear of D shelves, needs;
5) shifting points validation test
Described host computer generates steering order according to described control strategy, is specially:
A: under the current throttle aperture, described host computer sends the gearshift steering order that switches to the D shelves to described automatic transmission;
B: described host computer sends to described electric machine controller and drives the Electric Machine Control instruction that alternating current generator reaches theoretical shifting points under the D shelves, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine in the Dynamometer Control instruction of fine setting dynamometer machine rotating speed under described theoretical shifting points under the rotating speed pattern
C: if host computer receives the feedback signal that described A/T gear position changes, then record the rotating speed (being the input speed of described automatic transmission) of alternating current generator this moment, otherwise host computer sends the Electric Machine Control instruction that switches near a certain rotating speed the theoretical shifting points to described alternating current generator, send to described Dynamometer Control device simultaneously and drive described dynamometer machine in the Dynamometer Control instruction of fine setting dynamometer machine rotating speed under current rotating speed under the rotating speed pattern, until receiving the feedback signal that described automatic transmission is shifted gears under the 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 the current throttle aperture, the shifting points of described automatic transmission under current gear.
D: described host computer sends the Electric Machine Control instruction of switching the current throttle aperture to described alternating current generator, returns step a, until obtaining the shifting points of described automatic transmission under different accelerator open degrees.
This test event is thus, when testing described alternating current generator and under different accelerator open degrees, turning round, and the shifting points of described automatic transmission (described shifting points is the shifting points of switching between D1 shelves, D2 shelves and the D3 shelves of D 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 that switches to the D shelves to described automatic transmission;
B: under each gear of D shelves, host computer is emitted in to described electric machine controller and drives the steering order that described alternating current generator starts and regulates the torque of described alternating current generator under the torque mode, simultaneously, host computer sends to described Dynamometer Control device and drives the steering order that dynamometer machine loads preset torque; 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 starting to the change curve during a gearshift circulation is finished, and record gearshift each time begins to finish the required time to gearshift, wherein, a described gearshift circulation is finished finger and is switched to D2 shelves, D3 shelves, D2 shelves, D1 shelves successively from the D1 shelves.
This test event is thus, when described dynamometer machine is in preset torque, regulate the torque of described alternating current generator, the input speed of described automatic transmission, input torque and output speed are corresponding to change, this process is attended by the gear switch of described automatic transmission under the D shelves, obtains the required time of gearshift of circulating under the 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 performance test.Compare at described real-time running data and predetermined standard service data (being performance index), can judge the quality of described automatic transmission performance according to comparison result.
By embodiment one as can be known, the embodiment of the invention drives alternating current generator by electric machine controller, with the braking equipment of described alternating current generator as described automatic transmission, drive described dynamometer machine by the Dynamometer Control device simultaneously, with the loading equipemtn of described dynamometer machine as described automatic transmission, simulate the running environment of automatic transmission.Host computer is by receiving input signal, determine and the corresponding control strategy of described input signal, and according to described control strategy generation steering order, simultaneously, receive the feedback signal of described first torque rotary speed sensor, second torque rotary speed sensor and automatic transmission and handle described feedback signal according to described control strategy, obtain the real-time running data of described automatic transmission under varying input signal with this, to finish the Performance Detection of described automatic transmission.Wherein, described service data is the foundation of the described automatic transmission performance test of test; Described steering order comprises: the Electric Machine Control that is used for the running of control electric machine controller drive motor is instructed, control Dynamometer Control device drives the Dynamometer Control instruction of dynamometer machine running and the gearshift steering order of controlling the automatic transmission gearshift.
Referring to Fig. 2, based on embodiment one, the embodiment of the invention two discloses another described automatic transmission Performance Test System, also comprises: link to each other with described host computer, receive the electric machine controller and the alternating current generator that links to each other with described electric machine controller of described Electric Machine Control instruction.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 are used to the system under test (SUT) that only disposes automatic transmission 600 to carry out performance test.
Compare with embodiment one, the disclosed Performance Test System of present embodiment self disposes electric machine controller 800 and alternating current generator 700, can directly test the system under test (SUT) that only provides automatic transmission 600, treat described alternating current generator 700 is 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 with described dynamometer machine 300 by described second torque rotary speed sensor 500 with after the output shaft of described automatic transmission 600 is connected, can start test macro and begin 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 with the inverter of direct current as power supply, at this moment, and the DC power cabinet that need link to each other with described electric machine controller for described test macro additional configuration; Perhaps, the assembly of described inverter and described DC power cabinet can directly adopt friendship-straight-friendship type varying-voltage frequency converter to replace, be that described electric machine controller 800 can directly adopt friendship-straight-friendship type varying-voltage frequency converter, present embodiment namely with hand over-straight-friendship type varying-voltage frequency converter is as described electric machine controller 800.
As preferably, described automatic transmission Performance Test System also comprises: the oily temperature controller 900 that is connected with described automatic transmission.
In automatic transmission 600 courses of work, can produce high temperature, if effectively do not cool off will cause that oily vapour touches from air hole, various faults such as clutch coupling or brake bush scaling loss, jeopardize the safe operation of described automatic transmission 600.For this reason, need be the oily temperature controller 900 of described automatic transmission 600 designs, described oily temperature controller 900 detects the oil temperature of described automatic transmission 600 in real time by temperature sensor, the trip temperature of going forward side by side is regulated, and guarantees that described automatic transmission 600 (being generally between 50 ℃～80 ℃) in the normal range of oil temperature carries out performance test.
In addition, also can comprise: cabinet 110 is switched in the direct current measurement that is connected with host computer and cabinet 120 is measured in output,
System power supply is switched cabinet 110 through described direct current measurement and is inserted described electric machine controller 800, and described output is measured cabinet 120 and is arranged between described electric machine controller 800 and the described alternating current generator 700.Described direct current measurement is switched cabinet 110 and is used for measuring the electric current and voltage of the described alternating current generator 700 of input, and is provided with the switch for its place connecting and disconnecting of the circuit of control; The electric current and voltage that cabinet 120 is used for measuring the described alternating current generator 700 of output is measured in described output.
In addition, also can comprise: system power supply inserts described Dynamometer Control device 800 through the described switch board 130 that is incorporated into the power networks.
Wherein, the system power supply of described automatic transmission 600 Performance Test Systems comprises: the power supply input cabinet 140 and the isolating transformer 130 that link to each other with electric network source.In described test macro, electric network source can be imported cabinet 140 and the described automatic transmission Performance Test System of isolating transformer 130 introducings by power supply, forms system power supply; Concrete, electric network source inserts 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 the 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 is used for making automatic transmission Performance Test System internal electric source and electric network source to isolate, and to suppress the electrical energy power quality disturbance of electrical network, guarantees the stable of described automatic transmission test macro internal power source voltage.
Based on above-mentioned arbitrary embodiment, the embodiment of the invention three discloses another automatic transmission Performance Test System, also comprises: place described automatic transmission periphery, for detection of the temperature sensor of described automatic transmission organism temperature;
Described temperature sensor is connected with described host computer, the feedback signal that described host computer also records for the treatment of described temperature sensor.
Described input signal also comprises the signal that the described test macro of indication carries out the temperature rise test, and described host computer generates steering order according to described control strategy and is specially:
A: described host computer sends the driving alternating current generator to described electric machine controller and is issued to motor speed greater than the Electric Machine Control instruction of rated speed in the rotating speed pattern, host computer sends the Dynamometer Control instruction of forbidding driving described dynamometer machine to described Dynamometer Control device simultaneously, and described dynamometer machine does not start;
B: under current gear, host computer obtains and records the data that described temperature sensor measurement obtains in real time, stops to rise or temperature rises to limit value up to described fluid drive actuator temperature.
C: described host computer sends the gearshift steering order to described automatic transmission, returns step a, until the temperature rise data that acquire described automatic transmission under each gear.
Thus, can finish the temperature rise of described automatic transmission test.
Based on above-mentioned arbitrary embodiment, the embodiment of the 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 that records by described noise meter.
Described host computer generates steering order according to described control strategy and is specially:
A: described host computer sends the driving alternating current generator to described electric machine controller and instructs in the Electric Machine Control that the rotating speed pattern is issued to rated speed, and the while host computer sends the described dynamometer machine of driving to described Dynamometer Control device and instructs in the Dynamometer Control that torque mode is issued to default torque.
B: obtain noise size in described automatic transmission periphery predetermined position by noise meter, and be input in the host computer.Described peripheral predeterminated position can be set on automatic transmission, the position that the described automatic transmission of front, rear, left and right direction distance is two meters.
C: described host computer sends the gearshift steering order to described automatic transmission, returns step a, until the noise testing data that acquire described automatic transmission under each gear.
Can finish the noise testing to described automatic transmission thus.
In sum, the embodiment of the invention drives alternating current generator by electric machine controller, with the braking equipment of described alternating current generator as described automatic transmission, drive described dynamometer machine by the Dynamometer Control device simultaneously, with the loading equipemtn of described dynamometer machine as described automatic transmission, simulate the running environment of automatic transmission.Host computer is by receiving input signal, determine and the corresponding control strategy of described input signal, and according to described control strategy generation steering order, simultaneously, receive the feedback signal of described first torque rotary speed sensor, second torque rotary speed sensor and automatic transmission and handle described feedback signal according to described control strategy, obtain the real-time running data of described automatic transmission under varying input signal with this, to finish the Performance Detection of described automatic transmission.Wherein, described service data is the foundation of the described automatic transmission performance test of test; Described steering order comprises: the Electric Machine Control that is used for control electric machine controller drive motor (described motor employing alternating current generator) running is instructed, control Dynamometer Control device drives the Dynamometer Control instruction of dynamometer machine running and the gearshift steering order of controlling the automatic transmission gearshift.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation of the spirit or scope that do not break away from the embodiment of the invention in other embodiments herein.Therefore, the embodiment of the invention will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an automatic transmission Performance Test System is characterized in that, comprising:
Host computer, Dynamometer Control device, dynamometer machine, first torque rotary speed sensor and second torque rotary speed sensor; Wherein:
Described first torque rotary speed sensor is used for linking to each other with the input shaft of automatic transmission, and described second torque rotary speed sensor is used for linking to each other with the output shaft of automatic transmission;
Described Dynamometer Control device links to each other with described dynamometer machine, and described Dynamometer Control device, first torque rotary speed sensor and second torque rotary speed sensor link to each other with described host computer respectively;
Described host computer receives input signal, determines and the corresponding control strategy of 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 used for the running of control electric machine controller drive motor; Described Dynamometer Control instruction is used for control Dynamometer Control device and drives the dynamometer machine running; Described gearshift steering order is used for the gearshift of control automatic transmission;
Described host computer receives the feedback signal of described first torque rotary speed sensor, second torque rotary speed sensor and automatic transmission and handles described feedback signal according to described control strategy.
2. automatic transmission Performance Test System according to claim 1 is characterized in that, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send drive motor is issued to the stepping rotating speed in the rotating speed pattern Electric Machine Control instruction to described electric machine controller, simultaneously, send the described dynamometer machine of driving is issued to default torque at torque mode Dynamometer Control instruction to described Dynamometer Control device;
B, described host computer obtain the stepping rotating speed of the described automatic transmission input end that is measured by described first torque and speed sensors, and by described second torque and speed sensors measure to the output torque of described automatic transmission, and calculate the transmission efficiency of described automatic transmission under the current gear;
C, described host computer send the gearshift steering order to described automatic transmission, and return step a, until the transmission efficiency and the record that calculate under each gear of described automatic transmission.
3. automatic transmission Performance Test System according to claim 1 is characterized in that, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the gearshift steering order that switches to the S shelves to described automatic transmission; Send the described motor of driving is issued to rated speed in the rotating speed pattern Electric Machine Control instruction to described electric machine controller, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine is issued to default torque at torque mode Dynamometer Control instruction;
B, described host computer send the gearshift steering order that switches to the L shelves to described automatic transmission, send the described motor of driving is issued to rated speed in the rotating speed pattern Electric Machine Control instruction to described electric machine controller, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine is issued to default torque at torque mode Dynamometer Control instruction;
C, return step a, reach preset value until between S shelves and L shelves, the circulate gearshift number of times of gearshift of described automatic transmission, and record described preset value and used time of circulation shift process.
4. automatic transmission Performance Test System according to claim 1 is characterized in that, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the Electric Machine Control instruction that drive motor starts to described electric machine controller under torque mode, host computer sends to described Dynamometer Control device and drive the Dynamometer Control instruction that described dynamometer machine starts under the rotating speed pattern simultaneously;
B, described automatic transmission are after parallel-adder settle-out time reaches preset value under the current gear, described host computer sends the gearshift steering order to described automatic transmission, return step a, receive the feedback signal of indication automatic transmission operation irregularity until host computer, or the described automatic transmission gearshift number of times that switches that circulates reaches preset value between each gear.
5. automatic transmission Performance Test System according to claim 1 is characterized in that, described host computer generates steering order according to described control strategy, is specially:
A, described host computer send the gearshift steering order that switches to the D shelves to described automatic transmission; Described automatic transmission is can be according to described dynamometer machine under current torque under the D shelves, and described rotating speed of motor situation of change is carried out fluid drive under each gear of D shelves;
B, described host computer send drive motor progressively changes rotating speed of motor under the rotating speed pattern Electric Machine Control instruction to described electric machine controller, host computer sends the described dynamometer machine of driving to described Dynamometer Control device and load the Dynamometer Control instruction of presetting torque under torque mode simultaneously, wherein said preset torque direction is opposite with described motor rotation direction, and limits zero-speed in the other direction;
C, described host computer obtain and record input speed and the input torque of described automatic transmission under each gear of D shelves that records by described first torque and speed sensors, and the output speed that records by described second torque and speed sensors, and draw described input speed, input torque and the output speed change curve under each gear of D shelves.
6. automatic transmission Performance Test System according to claim 1 is characterized in that, described host computer generates steering order according to described control strategy, is specially:
A, under the current throttle aperture, described host computer sends the gearshift steering order that switches to the D shelves to described automatic transmission;
B, described host computer send the Electric Machine Control instruction that drive motor reaches theoretical shifting points under the D shelves to described electric machine controller, simultaneously, host computer sends to described Dynamometer Control device and drives described dynamometer machine in the Dynamometer Control instruction of fine setting dynamometer machine rotating speed under described theoretical shifting points under the rotating speed pattern
C, if described host computer receive the feedback signal that described A/T gear position changes, then record the input speed of described automatic transmission this moment, otherwise described host computer sends the Electric Machine Control instruction that switches near a certain rotating speed the theoretical shifting points to described motor, send to described Dynamometer Control device simultaneously and drive described dynamometer machine in the Dynamometer Control instruction of fine setting dynamometer machine rotating speed under current rotating speed under the rotating speed pattern, until receiving the feedback signal that described automatic transmission is shifted gears under the D shelves, and record described current rotating speed;
D, described host computer send the Electric Machine Control instruction of switching the current throttle aperture to described motor, return step a, until obtaining the shifting points of described automatic transmission under different accelerator open degrees.
7. automatic transmission Performance Test System according to claim 1 is characterized in that, described host computer generates steering order according to described control strategy and is specially:
A, described host computer send the gearshift steering order that switches to the D shelves to described automatic transmission;
B, under each gear of D shelves, host computer is emitted under the torque mode Electric Machine Control instruction of the torque that drives described electric motor starting and regulate described motor to described electric machine controller; Simultaneously, host computer sends to described Dynamometer Control device and drives the Dynamometer Control instruction that dynamometer machine loads preset torque;
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 starting to the change curve during a gearshift circulation is finished, and record gearshift each time begins to finish the required time to gearshift, wherein, a described gearshift circulation is finished finger and is switched to D2 shelves, D3 shelves, D2 shelves, D1 shelves successively from the D1 shelves.
8. automatic transmission Performance Test System according to claim 1 is characterized in that, also comprises noise meter; Described host computer is also for the treatment of the noise information that records by described noise meter;
Described host computer generates steering order according to described control strategy and is specially:
A, described host computer send drive motor to described electric machine controller and instruct in the Electric Machine Control that the rotating speed pattern is issued to rated speed, and host computer sends to described Dynamometer Control device and drives described dynamometer machine is issued to default torque at torque mode Dynamometer Control instruction simultaneously;
B, obtain noise size in described automatic transmission periphery predetermined position by noise meter, and be input in the host computer;
C, described host computer send the gearshift steering order to described automatic transmission, return step a, until the noise testing data that acquire described automatic transmission under each gear.
9. automatic transmission Performance Test System according to claim 1 is characterized in that, also comprises the temperature sensor for detection of 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 to motor speed greater than the Electric Machine Control instruction of rated speed in the rotating speed pattern, and host computer sends the Dynamometer Control instruction of forbidding driving described dynamometer machine to described Dynamometer Control device simultaneously;
B, under current gear, host computer obtains and records the data that described temperature sensor measurement obtains in real time, stops to rise or temperature rises to limit value up to described fluid drive actuator temperature;
C, described host computer send the gearshift steering order to described automatic transmission, return step a, until the temperature rise data that acquire described automatic transmission under each gear.
10. automatic transmission Performance Test System according to claim 1 is characterized in that, also comprises: link to each other with described host computer, receive the electric machine controller and the alternating current generator that links to each other with described electric machine controller of described Electric Machine Control instruction.
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| CN105372064A (en) * | 2015-12-01 | 2016-03-02 | 泉州装备制造研究所 | Performance detection and analysis test stand of engineering machinery transmission assembly and test method thereof |
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| CN105372064A (en) * | 2015-12-01 | 2016-03-02 | 泉州装备制造研究所 | Performance detection and analysis test stand of engineering machinery transmission assembly and test method thereof |
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| 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 |
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