Steering method for wheel rim/hub-driven multi-shaft vehicle

Abstract

The invention discloses a steering method for a wheel rim/hub-driven multi-shaft vehicle. The steering method includes: detecting a running state of a vehicle; performing assisted steering in a mode that linear control hydraulic steering is a primary means and electronic gap steering is a secondary means if the vehicle runs normally; and performing assisted steering in the electronic gap steeringmode if the vehicle runs at a low speed. While the vehicle runs normally, assisted steering is performed in the mode that linear control hydraulic steering is the primary means and electronic gap steering is the secondary means, and the reliability and the running stability can be ensured; and when the vehicle runs at the low speed, assisted steering is performed in the electronic gap steering mode, the steering performance of the multi-shaft vehicle can be improved at the low speed, and the maneuverability of the vehicle can be enhanced.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a steering method for a wheel-side / hub-driven multi-axle vehicle. Background technique [0002] Traditional steering systems include mechanical, hydraulic power steering, or electric power steering. With the development of automotive electronic control technology, steering-by-wire technology and multi-mode steering technology have emerged. However, the current steering-by-wire technology is mostly a single steering mode, and the multi-mode steering technology often uses the traditional steering method instead of steering-by-wire, and these technologies are mostly aimed at four-wheel vehicles, and not many are applied to multi-axle vehicles. [0003] For multi-axle vehicles with multi-axle steering, the front and rear steering axles can be connected by purely mechanical or hydraulic methods. The purely mechanical way connects the front and rear steering axles together through...

AI Technical Summary

Problems solved by technology

The method of hydraulically connecting the front and rear axles generally has two modes: front axle steering and front and rear axle reverse steering. The switching timing of the two modes requires special training, which fails to fully reflect the advantages of multi-mode steering.

[0004] On the other hand, the traditional electronic differential torque steering is realized by distributing torque through planetary gears or equipped with gearboxes on both sides of the vehicle. The mechanical structure is complex, and it is rarely used except for tracked vehicles.

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