Air suspension control method with multi-layer additional air chambers for hub-driven electric vehicles

Abstract

A method for controlling an air suspension with multi-layer additional air chambers for a hub-driven electric vehicle, wherein the air suspension system with multi-layer additional air chambers includes two groups of front suspension systems and rear suspension systems, a total of four with multi-layer Air springs with additional air chambers; each group of air springs contains two air chambers, one main air chamber and one additional air chamber, the main air chamber is a membrane-type flexible rubber airbag structure, and the additional air chamber is a rigid multi-layer structure; the main air chamber and the The additional air chambers are connected by gas pipes, and a throttling orifice with adjustable aperture is set on the gas pipe; through the control of the aperture of the throttling orifice and the combination of the opening and closing states of the switch valves in the multi-layer additional air chambers, it can realize Changes in air spring stiffness and damping, the central controller performs vehicle suspension dynamics control, including vehicle height control, by calculating the optimal combination of opening and closing states of the additional air chamber switching valve and the diameter of the throttle damping hole required under different operating conditions , ride control, roll control and pitch control.

Description

technical field [0001] The invention mainly relates to the field of air suspension control, in particular to an air suspension control method with multi-layer additional air chambers for a hub-driven electric vehicle. Background technique [0002] With the development of the automobile industry, various new vehicles with the theme of energy conservation and environmental protection have become a hot field in the automobile industry. Electric vehicles driven by in-wheel motors have attracted widespread attention as a representative new energy vehicle. The distributed power structure and energy-saving power sources greatly reduce vehicle energy consumption. However, because the drive system is installed at the wheel hub, it not only takes up a lot of space but also increases the unsprung mass significantly, resulting in poor ride comfort of the vehicle, which is specifically manifested in the anti-pitch and anti-roll characteristics of the vehicle when it is impacted by uneven...

AI Technical Summary

Problems solved by technology

However, ordinary air suspension also has limitations such as single structure and difficulty in controlling suspension performance.

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