Hardware-in-the-loop testing device and method for automotive electronic parking controller

Abstract

The invention relates to a hardware-in-loop test device and method of an automobile electronic parking controller. The hardware-in-loop test device is characterized by comprising a dSPACE cabinet, an actuating mechanism, a switching module, a sensor monitoring module, a ramp driving module and a ramp protection module, wherein the actuating mechanism comprises a brake motor, brake calipers and a pressure nut, and the dSPACE cabinet comprises a DS1006 processor board card, a DS2202 board card, a DS2211 board card and a DS4302CAN communication board card; the DS1006 processor board is connected with the DS2202 board card, the DS2211 board card and the DS4302CAN communication board card through a PHS bus; a ramp control program is stored in the dSPACE cabinet, a digital input channel of the DS2202 board card and a CAN bus channel of the DS4302CAN communication board card in the dSPACE cabinet are connected with an input end of an ECU to be tested, a digital output channel of the DS2202 board card in the dSPACE cabinet is connected with the input end of the ECU to be tested, the brake motor is connected with an output end of the ECU to be tested, the switching module comprises an EPB switch, a relay and a switching board, and one end of the EPB is connected to a normally open contact of the relay.

Description

technical field [0001] The invention relates to the technical field of automotive active safety, in particular to a hardware-in-the-loop testing device and method for an automotive electronic parking controller. Background technique [0002] The hardware-in-the-loop test device of the automotive electronic parking controller is a device for testing the automotive chassis controller, which can provide a good basis for the strategy development and function improvement of the electronic parking controller. The electronic parking controller test is to detect the completeness of the functional strategy of the electronic parking controller in the real vehicle environment, including testing it under various working conditions. In the prior art, during the development process of the controller, the control strategy needs to be repeatedly modified. Therefore, in a development cycle, there are many problems from the design of the controller to the assembly on the real vehicle for test...

AI Technical Summary

Problems solved by technology

In the prior art, during the development process of the controller, the control strategy needs to be repeatedly modified. Therefore, in a development cycle, there are many problems from the design of the controller to the assembly on the real vehicle for testing. : 1. Adopting the method of real vehicle test greatly prolongs the development cycle of the controller, increases the development cost, and wastes a lot of time; 2. The real vehicle test needs to realize various operating conditions of the controller, which is harmful to the driver The operation and the acquisition of working condition parameters have extremely high requirements; 3. The controller is installed on the real vehicle, which brings great difficulties to the measurement of the braking force

[0003] The Chinese patent No. ZL2011103226913 discloses an electronic parking brake system and its parking control method. The control method uses an electronic parking button to implement parking brake and parking release. This switch unit requires a large number of detection The process of the function of the electronic parking controller is very inconvenient, and the service life of the electronic parking button will be greatly shortened by multiple clicks; the clamping force measured by the pressure sensor is used as an evaluation of the electronic parking The basis for the functional characteristics of the controller, if the pressure sensor fails, then simply relying on the feedback pressure value cannot observe whether to brake or release; another example is the Chinese patent No. ZL2013208835791 which discloses an electronic parking brake The hardware-in-the-loop test bench of the system, the angle value of the ramp test bench gives control instructions to the motor drive circuit through the host computer, so as to control the motor drive circuit to drive and control the motor to rotate, so as to drive the rotary tray to rotate to the preset angle value, in this way There is a certain error between the obtained actual slope angle value and the theoretical slope angle value, and the slope angle value cannot be monitored in real time, and the accuracy is poor

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