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Self-adaptive dynamic surface control method considering nonlinear active suspension actuator

A technology of dynamic surface control and active suspension, which is applied to instruments, special data processing applications, electrical digital data processing, etc., can solve the problems of simple suspension mathematical model and insufficient control accuracy, and achieve the reduction of suspension moving stroke, The effect of improving the overall performance and reducing the dynamic and static load ratio of the tire

Active Publication Date: 2019-08-06
YANSHAN UNIV
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Problems solved by technology

[0008] The present invention aims to solve the problem of insufficient control precision caused by the suspension mathematical model being too simple, and establishes a nonlinear active suspension model. The limitations of the backstepping algorithm for high-order systems, the adaptive dynamic surface control method is used, and the simulation control diagram of the control algorithm is given

Method used

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  • Self-adaptive dynamic surface control method considering nonlinear active suspension actuator
  • Self-adaptive dynamic surface control method considering nonlinear active suspension actuator
  • Self-adaptive dynamic surface control method considering nonlinear active suspension actuator

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Embodiment Construction

[0115] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0116] The technical solution adopted by the present invention to solve the technical problems is as follows:

[0117] Step 1, establishing a two-degree-of-freedom nonlinear active suspension model;

[0118] Step 2. Deduce the formula required by the controller of this patent, and perform stability proof;

[0119] Step 3, controller parameter adjustment and comparison of simulation results.

[0120] The technical solution is described in detail as follows: ...

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Abstract

The invention relates to a self-adaptive dynamic surface control method considering a nonlinear active suspension actuator. The self-adaptive dynamic surface control method comprises the following steps: firstly, establishing a two-degree-of-freedom nonlinear active suspension model through a step 1; reasoning a formula required by the self-adaptive dynamic surface controller through the step 2, and carrying out stability certification; and performing controller parameter adjustment and simulation result comparison through the step 3. According to the invention, the nonlinear active suspensionmodel is established; self-adaptive dynamic surface control is adopted, the problem that nonlinear factors in a suspension system and differential explosion caused by multiple derivation in a high-order system cannot be well solved through linear control can be solved, the controller is more beneficial to practical application, a better control effect is achieved, and the method can be applied tothe field of suspension control.

Description

technical field [0001] The invention belongs to the field of automobile dynamic control, in particular to an adaptive dynamic surface control method considering nonlinear active suspension actuators. Background technique [0002] The research of the patent of this invention is a heavy-duty vehicle. Because the actual working environment of the heavy-duty vehicle is relatively harsh and the road conditions are very poor, the harsh working environment aggravates the vibration of the vehicle, and the conventional passive oil-gas suspension cannot be adjusted differently according to different inputs on the road surface. parameters, so that it cannot adapt to different road surfaces. Consider the three indicators that affect the performance of the suspension system: the vertical acceleration of the vehicle body, the dynamic travel of the suspension, and the dynamic and static load ratio. Through the control algorithm, the active suspension can not only reduce the impact of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 刘爽郝若兰赵丁选
Owner YANSHAN UNIV
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