An Intelligent Acceleration Damping Semi-Active Control Method for Vehicle Suspension System
A vehicle suspension and acceleration technology, applied in the direction of suspension, elastic suspension, vehicle components, etc., can solve the problems of complex calculation, unsuitable for engineering applications, etc., to achieve good control performance and improve ride comfort.
Active Publication Date: 2020-04-28
浙江孔辉汽车科技有限公司
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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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[0029] The method of the present invention is designed by summarizing existing classical semi-active control methods in the application of the two-degree-of-freedom semi-active suspension system model, and is specifically described as follows:
[0030] like figure 1 Shown: a typical semi-active suspension system model of a quarter vehicle, including a wheel 3 and a vehicle body 5 corresponding to the wheel 3 . The wheel 3 refers to a wheel in the vehicle. The body 5 refers to the corresponding body part of the entire vehicle to which the wheels 3 correspond. The connection between the body 5 and the wheel 3 is equivalent to the suspension spring 6, whose stiffness is k s , the vertical contact between wheel 3 and ground 1 is equivalent to wheel spring 2 with stiffness k t . The damping of the tires is ignored here. A shock absorber 4 is installed between the vehicle body 5 and the wheel 3, and the damping is c(t), which is a variable damping shock absorber.
[0031] For ...
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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...
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IPC IPC(8): B60G17/08B60G17/06B60G17/0165
CPCB60G17/0165B60G17/06B60G17/08B60G2400/206B60G2400/252B60G2500/10B60G2800/916
Inventor 郭孔辉王杨
Owner 浙江孔辉汽车科技有限公司