CN203643161U - Automatic transmission test system capable of simulating road condition - Google Patents
Automatic transmission test system capable of simulating road condition Download PDFInfo
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- CN203643161U CN203643161U CN201320676552.5U CN201320676552U CN203643161U CN 203643161 U CN203643161 U CN 203643161U CN 201320676552 U CN201320676552 U CN 201320676552U CN 203643161 U CN203643161 U CN 203643161U
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- driving axle
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Abstract
The utility model discloses an automatic transmission test system capable of simulating road conditions; the automatic transmission test system comprises a controller, a variable frequency motor used as a power source and capable of simulating power output of the an engine, an automatic transmission in transmission connection with the variable frequency motor, a transfer device in transmission connection with the automatic transmission, a front drive axle and a rear drive axle respectively in transmission connection with the transfer device, and four loading devices respectively arranged on left side and right side of the front drive axle and rear drive axle. The automatic transmission test system can simulate vehicle drive road resistance, employs a loading system to simulate resistance conditions of the road; compared with automation transmission entrucking test, the test method is low in cost, high in safety, and convenient in data acquisition; the test method can simulate multi-vehicle driving conditions, such as starting condition, normal road driving condition, slope driving condition and braking condition, thereby providing test data support for modification of a control strategy.
Description
Technical field
The utility model relates to automatic transmission technical field of measurement and test, particularly relates to a kind of automatic transmission test macro of energy simulated roadway condition.
Background technology
Automatic transmission is that one can be carried out self-shifting equipment according to engine operating condition and the speed of a motor vehicle, can automatically change according to the variation of Vehicle Driving Cycle resistance ratio of gear and the torque ratio of vehicle, alleviates driver's labour intensity.Heavy hydraulic mechanical type automatic transmission is important development aspect of China's system of vehicle transmission technical field, can normally work in order to guarantee automatic transmission, conventionally need to carry out performance test to automatic transmission, concrete generally need to carry out transmission efficiency test, schedule test, shift process test, starting performance test and braking procedure test etc.But the formulation of control strategy is a difficult point with debugging always, because entrucking testing cost is high, the problems such as security incident easily occur, engine bench test just becomes the important means of automatic transmission control strategy test.
Chinese patent 201210084850.5 discloses a kind of automatic transmission performance test methods, thereby it gives automatic transmission input power by the motion of operation drive control device drives frequency control motor, make automatic transmission operation, operate add load control simultaneously, control the loading of magnetic loader, make to produce friction force between output shaft and magnetic loader, this friction force retroaction is to automatic transmission, thereby affect the operation of automatic transmission, now, data acquisition unit gathers the various real-time real data of automatic transmission operation and passes to controller, controller is to these data analysis, thereby judge the performance quality of automatic transmission.
But, this patent is all the angle from image data, often can only check logic feasibility, the control sequential etc. of control strategy, the road resistance situation relevant to automatic transmission actual performance do not taken into account, just because of this, there is variety of issue in control strategy, serious meeting causes damage, the generation security incident etc. of mechanical part in vehicle road test.Therefore, be efficiency and the security that improves automatic transmission test, need to set up a kind of based on stand and automatic transmission test macro that can simulated roadway resistance condition.
Utility model content
The purpose of this utility model is for the technological deficiency existing in prior art, and a kind of automatic transmission test macro of energy simulated roadway condition is provided.
For realizing the technical scheme that the purpose of this utility model adopts be:
A kind of automatic transmission test macro of energy simulated roadway condition, comprise controller, as the variable-frequency motor of power source power output that can simulated engine, the automatic transmission being in transmission connection with described variable-frequency motor, the transfer gear being in transmission connection with described automatic transmission; The front driving axle and the rear driving axle that are in transmission connection with transfer gear respectively, and be separately positioned on described front driving axle and 4 chargers at two ends, rear driving axle left and right, between variable-frequency motor and automatic transmission, between automatic transmission and transfer gear, between transfer gear and front driving axle and rear driving axle, between front driving axle and rear driving axle and loading motor, be equipped with the rotating speed and the torque sensor that are connected with described controller signals, described variable-frequency motor, automatic transmission and each charger respectively with described controlled connection of controller.
Described charger is loading motor.
Also comprise the electric energy feedback mechanism being electrically connected with described loading motor, described electric energy feedback mechanism is electrically connected with described variable-frequency motor.
A method of testing of utilizing automatic transmission test macro as claimed in claim 3, comprises the following steps,
1) start whole test macro,
2) the working condition measurement step that automatically starts to walk: the loading load of four loading motors of controller control is added to maximum, make the left and right output speed of front driving axle and rear driving axle be 0, then declined by predetermined rule by controller controlled loading load, and strengthen gradually variable-frequency motor rotating speed simultaneously with the increase of simulation accelerator open degree, gather the control strategy of start process of each rotating speed and torque sensor data evaluation and test automatic transmission;
3) normal road running mode testing procedure: four loading motors of controller control apply respectively predetermined loading and loads and it is changed by pre-defined rule in time, changes by pre-defined rule and gathers each rotating speed and torque sensor data are kept off control strategy to evaluate and test automatic transmission lifting with this understanding with Time Controller control variable-frequency motor rotating speed;
4) ramp driving working condition measurement step: according to the parameter such as value of slope, vehicle weight, apply respectively predetermined load and control it by four loading motors of controller control and change by pre-defined rule in time, change by pre-defined rule and gather each rotating speed and torque sensor data with evaluation and test automatic transmission lifting gear control strategy with this understanding with Time Controller control variable-frequency motor rotating speed;
5) general damped condition testing procedure: under normal road running mode, fast the loading of four loading motors load increase to maximum load load 30%-60% to simulate general brake, gather each rotating speed and torque sensor data to evaluate and test the braking control strategy of automatic transmission with Time Controller;
6) brake hard working condition measurement step: under normal road running mode, fast the loading load of four loading motors is increased to maximumly with simulation brake hard, gathers each rotating speed and the torque sensor data brake hard control strategy with evaluation and test automatic transmission with Time Controller.
Loading motor described in described step 6 still keeps having the desired rotating speed of ABS so that front driving axle and rear driving axle left and right output speed are not 0 at loading load in maximum.
Compared with prior art, the beneficial effects of the utility model are:
The utility model, from the angle of simulating vehicle travel resistance, carrys out the resistance condition of simulated roadway by loading system, compare automatic transmission entrucking test, and this method of testing cost is low, safe, and data acquisition is convenient.This method of testing can be simulated multiple vehicle driving-cycle, for example, and starting operating mode, normal road running mode, ramp driving operating mode, damped condition etc., and then provide test figure support for the correction of control strategy.
Accompanying drawing explanation
Figure 1 shows that system architecture schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the automatic transmission test macro of energy simulated roadway condition of the present utility model comprises controller and testboard bay, and the variable-frequency motor 1 of exporting as the power of power source simulated engine, the automatic transmission 3 being in transmission connection with described variable-frequency motor, the transfer gear 4 being in transmission connection with described automatic transmission, the front driving axle 5 and the rear driving axle 8 that are in transmission connection with transfer gear respectively, and be separately positioned on described front driving axle and 4 loading motors 6 at two ends, rear driving axle left and right, 7, 9, 10(herein each loading motor specification is identical, and each controlled condition is identical, therefore do not make differentiating and processing at this), between variable-frequency motor and automatic transmission, between automatic transmission and transfer gear, between transfer gear and front driving axle and rear driving axle, between front driving axle and rear driving axle and loading motor, be equipped with the rotating speed and the torque sensor 2 that are connected with described controller signals, described variable-frequency motor, automatic transmission and each loading motor respectively with described controlled connection of controller 12.
Wherein, described variable-frequency motor, automatic transmission, transfer gear, front driving axle, rear driving axle and each charger are all fixedly installed on testboard bay, being in transmission connection as by connections such as shaft couplings between each parts, its set-up mode similarly to the prior art, no longer launches to describe at this.For the automatic transmission of different size model, adopt variable-frequency motor, transfer gear and the drive axle etc. that match, each rotating speed and torque sensor are all arranged in corresponding shaft extension simultaneously, all can adopt existing commercially available device.Controller is herein the controller of testboard bay, it can be exported various instructions and each sensor data acquisition is carried out to pre-setting analysis by follow procedure, it can be existing general controller, load the program of pressing the establishment of the utility model thought therein, under thought guidance of the present utility model, the establishment of specific procedure all can realize for current programming personnel, does not repeat them here.
Further, because employing loading motor, when for moment of torsion operational mode, it is just equal to generator to loading motor, for saving the energy, also comprise the electric energy feedback mechanism 11 being electrically connected with described loading motor, described electric energy feedback mechanism is electrically connected with described variable-frequency motor.It is to be noted, adjustable frequency motor, loading motor and electric energy feedback mechanism form a closed-loop system, loading motor is the motor that can apply the moment of resistance, it can be in applying the moment of resistance, be electric power by the power-conversion of automatic transmission output, this no longer launches to describe at this similarly to the prior art.
Utilize the method for testing of above-mentioned automatic transmission test macro specifically to comprise the following steps,
1) start whole test macro,
2) the working condition measurement step that automatically starts to walk: the loading load of four loading motors of controller control is added to maximum so that the left and right output speed of front driving axle and rear driving axle is 0, then declined by predetermined rule by controller controlled loading load, and strengthen gradually variable-frequency motor rotating speed simultaneously with the increase of simulation accelerator open degree, gather the control strategy of start process of each rotating speed and torque sensor data evaluation and test automatic transmission;
3) normal road running mode testing procedure: four loading motors of controller control apply respectively predetermined loading and loads and it is changed by pre-defined rule in time, changes by pre-defined rule and gathers each rotating speed and torque sensor data are kept off control strategy to evaluate and test automatic transmission lifting with this understanding with Time Controller control variable-frequency motor rotating speed;
4) ramp driving working condition measurement step: according to the parameter such as value of slope, vehicle weight, apply respectively predetermined load and control it by four loading motors of controller control and change by pre-defined rule in time, change by pre-defined rule and gather each rotating speed and torque sensor data with evaluation and test automatic transmission lifting gear control strategy with this understanding with Time Controller control variable-frequency motor rotating speed; Ramp driving is not both with the maximum of normal road driving, even if reached the condition of changing to high one-level gear, also can not carry out, should adopt current or low one-level gear, to increase driving force, maintain vehicle climbing capacity, by simulating different ramps and different driving condition, can detect the feasibility of current strategies.
5) general damped condition testing procedure: under normal road running mode, within the 1.4s time, the loading load of four loading motors is increased, to simulate driver's brake reaction time and detent onset time under general damped condition, wherein load load and reach respectively 30%, 40%, 50%, 60% etc. of loading motor maximum load load, with the damping force under simulation different braking intensity, gather each rotating speed and the torque sensor data braking control strategy with evaluation and test automatic transmission with Time Controller;
6) brake hard working condition measurement step: under normal road running mode, the loading load of four loading motors is increased to maximumly with driver's brake reaction time and detent onset time in simulation brake hard situation within the 0.8s time, gathers each rotating speed and the torque sensor data brake hard control strategy with evaluation and test automatic transmission with Time Controller.
It should be noted that, in above-mentioned steps, the Changing Pattern that loads load and variable-frequency motor revolution all can be set according to the applying working condition of automatic transmission etc., and in order to evaluate and test, under different operating modes, the good and bad of control strategy of start process also can be according to feedback real time modifying control strategy of start process.
Specifically, in described step 6, for simulating wheel has ABS function, now loading motor will have the rotating speed that ABS allows, and drive axle left and right output speed is not 0.Under this operating mode, test the brake hard control strategy of automatic transmission.
Wherein, the braking strategy under grade braking and common road conditions is identical, and different is the resistance in driving process, and the loaded load that loading motor provides is the moment of resistance, does not repeat them here.
The utlity model has following advantage,
1) propulsion system are variable-frequency motor, do not adopt engine as power source, and variable-frequency motor can be realized permanent rotating speed, permanent moment of torsion control, are easy to control.
2) charger adopts electric power charger, compares hydraulic loaded, loads load more accurate, controls more simple.Electric power charger can also be realized zero rotating speed and load, and can realize the simulation of vehicle start operating mode.
3) this test macro energy consumption is lower, and electric power charger can be that electric energy directly feeds back to variable-frequency motor by the power-conversion of automatic transmission output, has saved power consumption.
4) compare automatic transmission entrucking test, this method of testing cost is low, safe, and data acquisition is convenient.
5) this method of testing can be simulated multiple vehicle driving-cycle, for example, and starting operating mode, normal road running mode, ramp driving operating mode, damped condition etc.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. the automatic transmission test macro of an energy simulated roadway condition, it is characterized in that, comprise controller, as the variable-frequency motor of power source power output that can simulated engine, the automatic transmission being in transmission connection with described variable-frequency motor, the transfer gear being in transmission connection with described automatic transmission; The front driving axle and the rear driving axle that are in transmission connection with transfer gear respectively, and be separately positioned on described front driving axle and 4 chargers at two ends, rear driving axle left and right, between variable-frequency motor and automatic transmission, between automatic transmission and transfer gear, between transfer gear and front driving axle and rear driving axle, between front driving axle and rear driving axle and loading motor, be equipped with the rotating speed and the torque sensor that are connected with described controller signals, described variable-frequency motor, automatic transmission and each charger respectively with described controlled connection of controller.
2. the automatic transmission test macro of energy simulated roadway condition as claimed in claim 1, is characterized in that, described charger is loading motor.
3. the automatic transmission test macro of energy simulated roadway condition as claimed in claim 2, is characterized in that, also comprise the electric energy feedback mechanism being electrically connected with described loading motor, described electric energy feedback mechanism is electrically connected with described variable-frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320676552.5U CN203643161U (en) | 2013-10-30 | 2013-10-30 | Automatic transmission test system capable of simulating road condition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320676552.5U CN203643161U (en) | 2013-10-30 | 2013-10-30 | Automatic transmission test system capable of simulating road condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528816A (en) * | 2013-10-30 | 2014-01-22 | 中国人民解放军军事交通学院 | Automatic transmission testing system capable of simulating condition of road surface and automatic transmission testing method |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528816A (en) * | 2013-10-30 | 2014-01-22 | 中国人民解放军军事交通学院 | Automatic transmission testing system capable of simulating condition of road surface and automatic transmission testing method |
| CN103528816B (en) * | 2013-10-30 | 2016-04-13 | 中国人民解放军军事交通学院 | A kind of method of testing utilizing the automatic transmission test macro of energy simulated roadway condition |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20171030 |