Intelligent braking method and system for heavy-load intelligent transport vehicle

Abstract

The invention belongs to the field of vehicle braking control, and particularly discloses an intelligent braking method and system for a heavy-load intelligent transport vehicle. The method comprisesthe steps that the current braking mode is judged according to the working state of the transport vehicle, and the adhesive force change amount of a drive wheel and a driven wheel of the transport vehicle is calculated according to the difference value of the target deceleration and the actual deceleration and the feedback torque so as to generate the brake valve adjusting amount of the drive wheel and the driven wheel of the transport vehicle; therefore, the pressure values of the driving wheel and the driven wheel brake air chamber are adjusted according to the adjustment amount, and the transport vehicle is parked at a constant target deceleration in the service braking process. The system comprises a main control module, a VCU, a vehicle speed sensor, an EBS brake controller, a parkingbrake module, a redundant brake module, a driving motor connected with a driving wheel and a driving motor feedback torque collector. Reasonable braking distribution of braking is guaranteed, and thetransport vehicle can be parked at a constant target deceleration in the service braking process.

Description

technical field [0001] The invention belongs to the field of vehicle braking control, and more specifically relates to an intelligent braking method and system for a heavy-duty intelligent transport vehicle. Background technique [0002] With the continuous development of new energy vehicles and automatic driving technology, the electronic control technology of automobile chassis braking system is also developing continuously. In particular, ADAS, AEB and other technologies are constantly being used in automobiles, and the requirements for braking system technology are also getting higher and higher. It is required that the vehicle not only has manual braking control, but also needs to have automatic braking control function. The EHB electronic hydraulic brake system is different from the traditional vacuum booster brake system. It can realize the active brake function by electronically controlling the brake pressure of the master cylinder and wheel cylinder of the hydrauli...

AI Technical Summary

Problems solved by technology

However, this patent does not take the feedback torque of the driving motor into consideration, so that when performing braking distribution, the actual adjustment amount deviates greatly from the theoretical adjustment amount

[0004] Based on the above-mentioned defects and deficiencies, it is urgent to propose an intelligent braking method for heavy-duty intelligent transport vehicles in this field, and construct an intelligent braking method with good reliability, fast response speed, and strong braking ability to solve the problem of braking in the prior art. The degree of intelligence is not high, and there will be potential safety hazards when applied to unmanned heavy-duty intelligent transport vehicles

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