Electrically-controlled brake test bench

Abstract

The invention discloses an electrically-controlled brake test bench, which comprises a mechanical bench, a pressure sensor, a power supply module, a CAN communication module and an upper computer, a brake system is arranged on the mechanical rack and comprises a brake belt vacuum booster assembly, an ESC system, a brake hard pipe, a brake connecting hose, calipers, a brake disc, an electronic hand brake and a pressure sensor. The pressure sensor is installed on a tee joint of a caliper liquid inlet and used for conducting closed-loop monitoring on the actual pressure of the wheel end and feeding the actual pressure back to the upper computer to conduct closed-loop pressure buildup control testing. The upper computer is in communication connection with a braking system through the CAN communication module, and the upper computer is used for simulating a whole vehicle communication environment interacting with braking electric control, processing wheel end pressure in a closed loop mode and driving an ESC system to establish braking pressure. According to the invention, partial function response and voltage buildup capability of the ESC can be tested on a rack based on a whole vehicle simulation communication environment.

Description

technical field [0001] The invention belongs to the technical field of test stands, and in particular relates to an electric control brake test stand. Background technique [0002] The brake test bench is a test bench that includes a complete set of brake system components (such as: brake pedal, master cylinder with booster assembly, ESC (Electric Stability Control), soft and hard oil pipes, calipers and other fasteners) shelf. In the prior art, most focus on the design of the construction and fastening methods of the mechanical bench (such as a vehicle braking bench test device disclosed in CN201920777486.8), lacking the design of the test bench related to the electronic control system. The purely mechanical test bench mainly tests the basic brake components (for example, the PV curve of the brake caliper, the brake pedal force, the performance of the vacuum booster, etc.), the electronic stability control system and the integrated electronic power booster system, etc. Th...

AI Technical Summary

Problems solved by technology

(1) The requirements for the hardware electrical environment and the vehicle communication environment are high, the integration technology of the test bench is difficult, and the cost of the bench construction is high (the cost of a set of HIL bench is in the tens of millions)

[0003] (2) The platform has poor adaptability to different projects, and the restructuring is difficult and the cycle is long

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