Cooperative control system and method for damping-adjustable and vehicle body height-adjustable interconnection air suspension

Abstract

The invention discloses a cooperative control system and method for a damping-adjustable and vehicle body height-adjustable interconnection air suspension. The cooperative control system comprises a sensor module, a road unevenness recognition module, a driver instruction collection module, a coordination controller, an interconnection state controller, an interconnection state control execution mechanism, a damping controller, a damping control execution mechanism, a vehicle body height controller and a vehicle body height control execution mechanism. First, an interconnection state control strategy, a vehicle body height control strategy and a damping control strategy are made; then, the coordination controller is built, the working sequence of the controllers is determined according to current driving conditions, specific control sentences are corrected, vehicle body height control is corrected according to the interconnection state and the damping coefficient, and interconnection state control and damping control are corrected according to correction coefficients provided by the coordination controller. By means of the cooperative control system and method, an interconnection state control system, a vehicle body height control system and a damping control system can be effectively coordinated, and therefore the overall performance of the damping-adjustable and vehicle body height-adjustable interconnection air suspension can be obviously improved.

Description

technical field [0001] The invention relates to a vehicle air suspension system, in particular to a coordinated control system applied to the damping and adjustable interconnected air suspension of the vehicle body height. Background technique [0002] The air suspension system has the characteristics of variable stiffness, low vibration frequency, and convenient vehicle height control, which can effectively improve the ride comfort, handling stability, and road friendliness of the vehicle. It is currently widely used in the fields of passenger cars, heavy trucks, and high-end cars. In order to further improve the performance of the air suspension, the air suspension technology is often combined with the semi-active suspension technology, and the adaptability of the vehicle to different driving conditions is improved by adjusting the suspension damping. [0003] With the development of air suspension technology, a variety of new air suspension structures have emerged on th...

AI Technical Summary

Problems solved by technology

However, the damping and vehicle height adjustable interconnected air suspension system with interconnected state controllable structure, damping adjustable structure, and body height adjustable structure has not yet seen mature products. This is mainly because the system involves many controllable structures, and the control parameters and The control conditions interfere with each other, and the individual optimal control of each controllable structure cannot satisfy the optimal comprehensive performance of the vehicle.

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