Adaptive Dynamic Surface Control Method Considering Nonlinear Active Suspension Actuators

A technology of dynamic surface control and active suspension, which is applied in the direction of elastic suspension, suspension, geometric CAD, etc., can solve the problems of insufficient control accuracy and simple suspension mathematical model, so as to improve the overall performance and reduce suspension dynamics. Stroke, the effect of reducing the dynamic and static load ratio of the tire

Active Publication Date: 2020-12-11
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

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  • Adaptive Dynamic Surface Control Method Considering Nonlinear Active Suspension Actuators

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[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 an adaptive dynamic surface control method considering a nonlinear active suspension actuator. Firstly, a two-degree-of-freedom nonlinear active suspension model is established through step 1; and the formula required for an adaptive dynamic surface controller is deduced through step 2. , and prove the stability; through step three, adjust the controller parameters and compare the simulation results. The present invention first establishes a nonlinear active suspension model, and adopts adaptive dynamic surface control, which can solve the problem that linear control cannot solve the nonlinear factors in the suspension system well and the differential explosion caused by multiple derivatives in the high-order system The problem makes the controller more conducive to practical application, achieves better control effect, and can be applied to the 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 ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06F30/20B60G17/015
CPCG06F30/15G06F30/20
Inventor 刘爽郝若兰赵丁选
Owner YANSHAN UNIV
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