Wire-controlled steering system for automobiles

Abstract

The invention discloses a wire-control steering system used in automobiles, which is aimed at solving the problems of complex structure, high cost or great hidden trouble of safety of the prior art. The steering system comprises a steering wheel mechanism, a steering motor controller and a steering executing mechanism. A wiring terminal of the steering wheel mechanism is connected with a wire at a wiring terminal of the steering motor controller; a wiring terminal of the steering executing mechanism is connected with a wire at a wiring terminal of the steering motor controller. The steering executing mechanism comprises a steering motor No. one and a steering motor No. two, a worm and gear deceleration mechanism No. one and a worm and gear deceleration mechanism No. two, a force sensor, a steering angle sensor, a steering gear and a displacement sensor. The two motors are respectively and fixedly connected with input ends of the two worm and gear deceleration mechanisms; the force sensor and the steering angle sensor are fixedly connected between the two worm and gear deceleration mechanisms; output ends of the worm and gear deceleration mechanism No. two are fixedly connected with the input ends of the steering gear; a core shaft of the displacement sensor is fixed on an extending end of a rack on the steering gear; a shell of the displacement sensor is fixed on a shell of the steering gear.

Description

technical field [0001] The invention relates to a steering-by-wire mechanism used in automobiles, more specifically, it relates to a steering-by-wire system used in automobiles. Background technique [0002] Traditional steering systems (mechanical, hydraulic or electric power steering systems) can ensure that the car turns according to the driver's will. However, due to its fixed steering ratio, the car's steering response characteristics vary with vehicle speed and steering wheel angle. Therefore, the driver must perform some operational compensation for the magnitude and phase changes of the steering characteristics of the car in advance, so as to control the car to drive according to his will, which greatly affects the steering stability and driving comfort of the car. Therefore, along with the rapid development of automobile technology and electronic technology, the concept of steer-by-wire came into being. The steering-by-wire steering system of the car cancels the me...

AI Technical Summary

Problems solved by technology

Double sets of steer-by-wire actuators need to redesign the steering gear of the car, the mechanism is too complicated and the cost is high

The steering-by-wire system equipped with a safety clutch cannot fully reflect the advantages of the steering-by-wire system due to the retention of the original mechanical device

At present, there is no precedent for converting the original mechanical steering gear into a dual-motor redundant steering-by-wire actuator

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