Intelligent accelerated speed damping semi-active control method for vehicle suspension system

Abstract

The invention discloses an intelligent accelerated speed damping semi-active control method for a vehicle suspension system. The vertical accelerated speed signal (please see the specification for the symbol) of a vehicle body and the relative displacement signal Zdef of the vehicle body and tires are measured. The accelerated speed signal (please see the specification for the symbol) is input to a control system W. The signal transmitted into the control system is S, and the signal S and the relative movement speed signal (please see the specification for the formula) of the vehicle body and the tires are multiplied; when a result is larger than zero, a damper outputs the maximum damping Cmax (mode A) or the formula (please see the specification for the formula) (mode B); and when the result is equal to or smaller than zero, the damper outputs the minimum damping Cmin. In this way, dynamic damping adjustment of the damper damping is achieved. The intelligent accelerated speed damping semi-active control method for the vehicle suspension system has an on-off type damping control mode and a continuous damping control mode and is simple; and the vertical vibrating accelerated speed of the vehicle body can be effectively inhibited within all the road face driving frequency range, so that a vehicle has good riding comfort, the suspension property of the vehicle is obviously improved.

Description

technical field [0001] The invention relates to an intelligent acceleration damping semi-active control method for a vehicle suspension system, belonging to the field of vehicle vibration control. Background technique [0002] Suspension is an integral part of the vehicle driving system, and its performance directly determines the ride comfort, handling stability and driving safety of the vehicle. Vehicles have an urgent need for a suspension system with superior performance. At present, the controllable suspension technology based on active and semi-active control is an effective way to improve the performance of the suspension, and the simple, effective and good performance control method has always been the key issue in the development of the controllable suspension system. [0003] In terms of the types of shock absorbers, it also has switch type adjustable soft and hard damping shock absorbers and continuous type adjustable damping shock absorbers. The damping continuo...

AI Technical Summary

Problems solved by technology

All kinds of control methods can improve the suspension performance to varying degrees, but some of them are not suitable for engineering applications due to complex calculations

From the perspective of engineering application, the classic control method has the advantages of small calculation, simple and practical, and more applicability, but the classic switch-type ceiling damping control and acceleration damping control cannot have excellent control effects in the entire excitation frequency domain

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