Drive-by-wire independent steering operation device aiming at unilateral motor fault, and operation method of drive-by-wire independent steering operation device

Abstract

The invention discloses a drive-by-wire independent steering operation device aiming at unilateral motor fault, and an operation method of the drive-by-wire independent steering operation device. The device comprises a steering motor, a clutch, a planetary gear, a variable-speed gear, a linkage shifting fork and a gear-rack transmission mechanism, wherein two ends of the clutch are respectively connected with a motor shaft of the steering motor and a gear shaft of a sun gear of the planetary gear; the linkage shifting fork is connected with a first combination sleeve, a second combination sleeve and a third combination sleeve; the first combination sleeve and the third combination sleeve are in sleeve connection with a fixed shaft, and the second combination sleeve is in sleeve connection with a gear shaft of a third gear; a first gear and a second gear sleeve the gear shaft of the third gear in an empty way, the first gear is meshed with a planet carrier gear, and the second gear is meshed with a gear ring of the planetary gear. After the device and the method are used, the steering motor with a certain stand-by power can provide enough steering force for two steering mechanisms in the case of failure by changing a transmission ratio, so that a vehicle provided with the faulted unilateral steering motor is enabled to have enough steering travel self-rescue ability.

Description

technical field [0001] The invention belongs to the technical field of independent steering by wire for automobiles, and in particular relates to an independent steering by wire control device and a manipulation method for unilateral motor failure. Background technique [0002] With the continuous development of automotive electronic technology and the integration of automotive systems, X-by-wire technology has been paid more and more attention. The independent steering by wire technology makes it possible for the vehicle to steer independently with multiple wheels, which maximizes the steering performance of the vehicle. Compared with the traditional steering system, the wire-controlled independent steering system can speed up the steering response of the system, ensure the stability of the vehicle at high speeds, and reduce the steering radius of the car at low speeds. However, since the steering-by-wire wheels are independent of each other and there is no mechanical conn...

AI Technical Summary

Problems solved by technology

Aiming at configuring one more spare motor as a redundant design scheme, since the permanent magnet material of the motor is scarce, it is a strategic material, and its development will be subject to certain restrictions

It adds complexity to the mechanical system for a solution that uses only one motor plus a separate steer-by-wire for motor failure

Both of these solutions will increase the cost of the system. Which solution is better remains to be further verified.

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