Active type variable steering system and control method thereof

Abstract

The invention discloses an active type variable steering system. The system comprises a first box body, an input shaft, an first gear, an output shaft, an intermediate shaft, a first shifting fork mechanism, a second shifting fork mechanism and a driving mechanism, wherein one end of the input shaft is rotatably supported on the first box body, and the other end is connected with a steering wheelwhich is used for receiving steering power from the steering wheel; the two ends of the intermediate shaft are rotatably supported on the first box body, wherein the intermediate shaft is arranged inparallel with the output shaft, and a fourth gear, a fifth gear and a sixth gear are sequentially arranged on the intermediate shaft; the driving mechanism is arranged on one side of the first box body, wherein each other end of the first shifting fork mechanism and the second shifting fork mechanism is arranged in the driving mechanism, and the driving mechanism drives the first shifting fork mechanism and the second shifting fork mechanism to do axial motion. According to the steering system, the transmission ratio under different vehicle speeds can be changed. The invention further providesan control method of the active type variable steering system.

Description

technical field [0001] The invention relates to an active variable steering system and a control method thereof, belonging to the field of automobile steering. Background technique [0002] The steering system in the direction of travel is particularly important to the safety of automobile driving. In the actual driving, the steering system of the car we expect should not only have flexible steering characteristics at low speeds, but also have good steering stability at high speeds. As a conventional steering system of a traditional car, no matter whether the car is running at low speed or high speed, the ratio of the steering wheel to the steering angle of the front wheels is always fixed, and the steering sensitivity of the vehicle changes with the speed of the vehicle. The change of steering response is compensated for operation, which increases the driver's steering burden and the uncertainty of vehicle driving safety. [0003] Compared with the conventional steering s...

AI Technical Summary

Problems solved by technology

As a conventional steering system of a traditional car, no matter whether the car is running at low speed or high speed, the ratio of the steering wheel to the steering angle of the front wheels is always fixed, and the steering sensitivity of the vehicle changes with the speed of the vehicle. Steering response changes for operational compensation, which in turn increases the driver's steering burden and the uncertainty of vehicle driving safety

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