Control method and control system for vehicle trailer

Abstract

The invention discloses a control method and a control system for a vehicle trailer, and relates to the technical field of vehicle trailer control. The control method comprises the following steps: 101, when a power domain control unit PDCM is normal, the PDCM responds to an instruction of entering a trailer mode, and controls an electronic parking brake unit EPB to release calipers; executing the trailer, wherein the PDCM controls the vehicle to brake according to the vehicle speed and the duration of the trailer; 102, when the PDCM breaks down, an integrated brake control unit IPB responds to an instruction of entering a trailer mode, and the EPB is controlled to release calipers; and the IPB controls the vehicle to be braked according to the vehicle speed and the time length of the trailer. When any one of the PDCM and the IPB is damaged due to vehicle collision, it can still be guaranteed that the vehicle enters the trailer mode. When the trailer is executed, the PDCM and the IPB can control the vehicle to brake according to the vehicle speed and the duration of the trailer, so that a motor controller is prevented from being broken down by reverse electromotive force, and a vehicle electric control system is prevented from being heated and damaged.

Description

technical field [0001] The invention relates to the technical field of vehicle trailer control, in particular to a control method and a control system for a vehicle trailer. Background technique [0002] At present, affected by environmental protection issues and the development trend of the automobile industry, automobiles are developing towards new energy technology routes. Pure electric vehicles and gasoline-electric hybrid vehicles are generally considered to be the main directions for the transformation and development of automotive energy and power systems in the future. [0003] With the rapid development of hybrid electric vehicles and pure electric vehicles in the future, the permanent magnet synchronous motor will usher in a period of more rapid development, and its development trend will also present the following characteristics: high power density, high torque density, high controllability Sex, high efficiency, high performance, high price ratio, etc., to meet t...

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a control method and control system for a vehicle trailer to solve the problem in the prior art that when the vehicle collides, the controller is damaged and cannot enter the trailer mode; when entering the trailer mode and performing the trailer, the motor controller is easily The technical problem of being broken down by the reverse electromotive force or the motor is easily damaged by heat

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