Dynamic brake performance testing device of integrated type electronic parking brake system

A technology of electronic parking brake and test device, which is applied in the direction of vehicle test, measurement device, machine/structural component test, etc., can solve the problems of high risk factor and high cost of vehicle test, and achieve simple structure and dynamic test bench. Optimized braking performance and easy assembly and disassembly

Inactive Publication Date: 2013-09-25
WANXIANGQIANCHAO CO LTD +1
5 Cites 9 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Since the dynamic function of EPB is quite different from that of traditional parking systems, and the cost of on-board testing is hi...
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Method used

Described hydraulic motor 10 is low-speed high-torque motor, and maximum torque is 2000Nm, and low-speed stability is good; Described hydraulic console 12 maximum flow rate is 90L/min*2, and rated pressure is 16MPa.
The brake 2 of described band EPB is fixed on the brake support 1, and the brake support 1 is fixed on the stand base 13 by foundation pin, connects flange 3 in the brake disc 2 of band EPB, and passes The shaft coupling 4 is connected with the torque speed sensor 6, and the torque speed sensor 6 is fixed on the sensor support 5; one end of the reducer 8 is connected with the torque speed sensor 6 through the shaft coupling 4, and the other end is connected with the hydraulic pressur...
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Abstract

The invention relates to a dynamic brake performance testing device of an integrated type electronic parking brake system. The dynamic brake performance testing device comprises a mechanical transmission device and a control device. The mechanical device is composed of a brake support, a brake with an EPB, a flange plate, a coupling, a sensor support, a torque rotating speed sensor, a speed reducer support, a speed reducer, a hydraulic motor support, a hydraulic motor, a hydraulic pipeline, a hydraulic control platform and a rack base. The control device is composed of the hydraulic control platform, the torque rotating speed sensor, a PC machine and an EPB controller. The dynamic brake performance testing device of the integrated type electronic parking brake system has the advantages that the testing device is suitable for any EPB, dismounting and mounting are convenient, an experiment table is simple in structure, the dynamic brake performance of the integrated type electronic parking brake system can be accurately judged according to all electrical signal parameters, and ECU parameters are optimized.

Application Domain

Technology Topic

Dynamic brakingAutomotive engineering +13

Image

  • Dynamic brake performance testing device of integrated type electronic parking brake system
  • Dynamic brake performance testing device of integrated type electronic parking brake system

Examples

  • Experimental program(1)

Example Embodiment

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings: figure 1 As shown, the present invention includes two parts, a mechanical transmission device and a control device. The mechanical device consists of a brake bracket 1, a brake with EPB 2, a flange 3, a coupling 4, a sensor support 5, and a torque speed sensor 6. , reducer bracket 7, reducer 8, hydraulic motor bracket 9, hydraulic motor 10, hydraulic pipeline 11, hydraulic console 12, bench base 13; the control device part is composed of hydraulic console 12, torque speed sensor 6 , PC, and EPB controller.
[0015] The brake 2 with EPB is fixed on the brake bracket 1, the brake bracket 1 is fixed on the bench base 13 through the feet, and the brake disk 3 of the brake 2 with EPB is connected to the flange 3, and is connected through the coupling. 4 is connected with the torque speed sensor 6, and the torque speed sensor 6 is fixed on the sensor support 5; one end of the reducer 8 is connected with the torque speed sensor 6 through the coupling 4, and the other end is connected with the hydraulic motor 10 through the coupling 4 , and the reducer 8 is fixed on the reducer bracket 7 ; the hydraulic motor 10 is fixed on the hydraulic motor bracket 9 , the rear end is connected with a hydraulic pipeline 11 , and the other end of the hydraulic pipeline 11 is connected to the hydraulic console 12 . The brake bracket 1, the sensor bracket 5, the reducer bracket 7, the hydraulic motor bracket 9, and the hydraulic console 12 are all fixed on the platform base 13 by the feet to keep the center line of each component in the height and horizontal direction. Consistent, and the small assembly error is compensated by the coupling 4 between the components.
[0016] The hydraulic motor 10 is a low-speed high-torque motor with a maximum torque of 2000Nm and good low-speed stability; the hydraulic console 12 has a maximum flow rate of 90L/min*2 and a rated pressure of 16MPa.
[0017] as attached figure 1 , 2 As shown in the figure, the hydraulic console 12 is used to output the hydraulic control signal to control the hydraulic motor 10 to output appropriate torque and rotational speed. After the speed reducer 8 decelerates and increases the torque, the brake disc is driven by the coupling 4 to rotate at the intended rotational speed to simulate the driving of the car. The state of the wheel in the process. At a certain wheel speed, press the EPB control button on the EPB controller, and send an instruction through the EPB actuator to make the EPB perform the static parking or dynamic braking function, and measure the rotational speed applied to the brake disc during the process. changes and changes in signals such as the current returned by the EPB controller. Through the PC and the NI first and second data acquisition systems, the feedback signal of the EPB controller is converted into a clamping force signal, and the performance of the EPB dynamic braking is measured by comparing the rotational speed and torque signal output by the hydraulic console 12 .
[0018] In actual use, the moment of inertia of the entire transmission mechanism needs to be measured first, and the actual torque required by the hydraulic motor 10 is obtained by converting the moment of inertia of the single wheel of the vehicle signal to be simulated.
[0019] The rotational speed of the hydraulic motor 10 should be determined according to the diameter of the actual brake disc and the initial vehicle speed assumed in the test, and the EPB controller should select the corresponding braking mode according to different vehicle speeds.
[0020] The present invention considers the emergency braking test of the brake 2 with EPB, and of course it can also be applied to the handbrake braking capability test and the service braking capability test of traditional automobiles.
[0021] The present invention is not limited to the above-mentioned embodiments. Regardless of any change in its shape or material composition, any structural design provided by the present invention is a deformation of the present invention, and should be considered within the protection scope of the present invention. .
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PUM

PropertyMeasurementUnit
Maximum torque2000.0Nm
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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