Electrically controlled limit device and limit control method for preventing excessive automatic steering of automobile

Abstract

The invention discloses an electrically controlled limit device for preventing excessive automatic steering of an automobile. The electrically controlled limit device includes a limit device, a sensor and a controller, wherein the limit device is arranged between a steering wheel and wheels, and used for selectively limiting the steering angle of the steering wheel; the sensor is used for obtaining the steering angle of the steering wheel and a torque transmitted between the wheels and the steering wheel; the controller is configured to control the limit device to limit the steering of the steering wheel according to the steering angle and the torque obtained by the sensor. The electrically controlled limit device is additionally mounted on a steering shaft, so as to prevent accidental large-angle deflections of the wheels under ground impact, and improve the automobile traveling safety. The device adopting the technical scheme achieves rapider judgment and lower manufacturing cost, and can prevent the phenomenon that when a driver carelessly reduces the torque of holding the steering wheel, large-angle automatic steering of the automobile is caused by road disturbances; meanwhile, when the driver is able to or resume to control the steering, the device can voluntarily withdraw from the interference, so as to avoid interfering the steering control of the driver.

Description

technical field [0001] The invention relates to the technical field of automobile steering control, in particular to an electronically controlled limiting device and a limiting control method for preventing excessive self-steering of automobiles caused by road surface disturbances. Background technique [0002] Along with the popularity of automobiles, the traffic accidents caused by the out-of-control steering of automobiles are increasing year by year. The main reasons for the loss of control of the steering of the car are as follows: 1. The mechanical structure of the steering system of the car is aging; 2. The tire burst; [0003] For the first and second cases, it can generally be avoided as much as possible through reasonable maintenance of the car, while the third case is often caused by the steering system of the car being suddenly disturbed by the road surface, for example, the car deviates from the road and the tire hits the shoulder of the road. Sudden steering c...

AI Technical Summary

Problems solved by technology

This type of technical system is complex and expensive, and the sudden self-steering caused by road disturbance when the driver is negligent and loosens the grip of the steering wheel. Due to the long judgment and processing time, the control effect is not ideal.

Images