Worm-gear electronic parking brake gradient simulation test bed

Abstract

The invention relates to a worm-gear electronic parking brake gradient simulation test bed, and belongs to the field of automobiles. The worm-gear electronic parking brake gradient simulation test bed comprises a driving device, a right supporting plate, a rotating mechanism, a left supporting plate and a test bed frame, a rotating shaft is manually rotated and drives a worm, the worm drives a worm gear, the worm gear drives a spindle to rotate through a flat key, so that a rotating platform is driven to rotate, a gradient sensor on the rotating platform feeds back acquired gradient signals to a controller, and the controller controls an actuating mechanism after computing, so that effectiveness and reliability of an electronic parking system are sufficiently verified before a real automobile is tested. The worm-gear electronic parking brake gradient simulation test bed has the advantages that hardware-in-loop tests of the sensor, the controller and an actuator of the electronic parking brake system can be finished, a driving mechanism has a self-locking function and is stable and reliable, a test device can finish the hardware-in-loop tests with a certain accuracy without any power supply and is high in accuracy, and the problems of potential signal interference and oscillation of a pointer due to driving of a motor are avoided.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a worm gear-type electronic parking brake slope simulation test bench for an electronic parking brake system using a worm gear device as an actuator. Background technique [0002] The electronic parking brake system (EPB) measures the slope through the longitudinal acceleration sensor built in its computer, so that it can calculate the sliding force of the vehicle on the slope due to gravity, and the computer applies braking force to the rear wheels through the motor to balance the sliding force, so that the vehicle can stop on the slope. When the vehicle starts, the computer calculates the braking force to be applied through the displacement sensor on the clutch pedal and the size of the accelerator, and at the same time communicates with the engine computer through the high-speed controller area network (CAN) to obtain the engine traction force. The computer automatically calcul...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a worm gear type electronic parking brake slope simulation test bench, which solves the problem of limited slope simulation range, low precision, and easy interference of the signals of various components in the electronic parking system (EPB) hardware-in-the-loop test. Bottlenecks restricting the development of Electronic Parking System (EPB) hardware-in-the-loop test, thus promoting the development of Electronic Parking System (EPB) to a certain extent

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