Drive-by-wire four-wheel independent steering system with the steering motor arranged on double-wishbone suspension swinging arm

Abstract

The invention relates to a drive-by-wire four-wheel independent steering system with a steering motor arranged on a double-wishbone suspension swinging arm. The drive-by-wire four-wheel independent steering system comprises the steering motor, a driven shaft, an upper controlling arm, the lower swinging arm and a steering knuckle used for driving a wheel to swerve. The upper controlling arm and the lower swinging arm are connected with a vehicle body; the driven shaft passes the lower swinging arm and is connected with the steering knuckle; the upper controlling arm is connected with the steering knuckle; the steering system further comprises a universal driving device which is arranged between the driven shaft and the steering knuckle; the steering motor is arranged on the lower swinging arm, and the output end of the steering motor is connected with the universal driving device; and the torque output by the steering motor drives the steering knuckle through the universal driving device to drive the wheel to steer. Compared with the prior art, the drive-by-wire four-wheel independent steering system for arranging of the steering motor on the double-wishbone suspension swinging arm has the advantages that independent steering is achieved and movement performance of a suspension is combined.

Description

technical field [0001] The invention relates to a wire-controlled four-wheel independent steering system, in particular to a wire-controlled four-wheel independent steering system in which a steering motor is arranged on a swing arm of a double-wishbone suspension. Background technique [0002] The traditional vehicle steering system ensures that there is a certain functional relationship between the inner and outer wheel angles during steering through the steering trapezoidal mechanism, which approximately satisfies the Ackermann steering law. However, due to the existence of the steering trapezoid, it will inevitably cause the movement interference of the suspension guide mechanism and the steering rod system when the wheels jump up and down, and it is impossible to realize the steering at a large angle. The four-wheel independent steering by wire technology cancels the traditional trapezoidal steering mechanism, which fundamentally solves this problem. The four-wheel-by-...

AI Technical Summary

Problems solved by technology

However, the existing independent steering by wire technology often adopts simple suspension forms such as candle suspension, and it is difficult to take into account the kinematic performance of the suspension while realizing independent steering

Images