Mechanical arm system saturation compensation control method based on back-stepping sliding mode control

A technology of compensation control and control method, which is applied in general control systems, control/regulation systems, adaptive control, etc., and can solve problems such as ineffective saturation compensation and model parameter uncertainty.

Active Publication Date: 2015-09-30
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the deficiencies of the existing manipulator servo system, such as ineffective saturation compensation and model parameter uncertainty, the present invention provides a manipulator system saturation compensation

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  • Mechanical arm system saturation compensation control method based on back-stepping sliding mode control
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  • Mechanical arm system saturation compensation control method based on back-stepping sliding mode control

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Embodiment Construction

[0103] The present invention will be further described below in conjunction with the accompanying drawings.

[0104] refer to Figure 1-Figure 5 , a control method for saturation compensation of a manipulator system based on inverse sliding mode control, comprising the following steps:

[0105] Step 1, establish the dynamic model of the servo system of the manipulator, initialize the system state, sampling time and control parameters, the process is as follows:

[0106] 1.1 The expression form of the dynamic model of the manipulator servo system is

[0107] I q · · + K ( q - θ ) + MgL ...

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Abstract

The invention provides a mechanical arm system saturation compensation control method based on back-stepping sliding mode control. The method comprises the following steps of building a dynamic model of a mechanical arm servo system, and initializing the system state, the sampling time and the control parameter; carrying out saturation linearization processing on the nonlinear input in a system according to the differential mean value theorem, and deriving a mechanical arm servo system model with unknown saturation; calculating the control system tracking error, the sliding mode surface and the differentiation. The invention provides the back-stepping sliding mode control method capable of effectively avoiding the influence of unknown saturation input on the system position tracking control performance and using the saturation compensation control method based on back-stepping sliding mode control and the stable and fast tracking of the system is realized.

Description

technical field [0001] The invention relates to a control method for saturation compensation of a manipulator system based on inversion sliding mode control, in particular to a control method for a manipulator servo system with input saturation constraints. Background technique [0002] The servo system of the manipulator has been widely used in high-performance systems such as robots and aviation vehicles. How to realize the fast and precise control of the servo system of the manipulator has become a hot issue. The trajectory tracking control system of the robot arm and the problem of the flexible robot arm have received more and more attention. However, the unknown saturated nonlinear link widely exists in the servo system of the manipulator, which often leads to a decrease in the efficiency of the control system or even failure. Therefore, the constraint of input saturation must be considered during the controller design process. For the control problem of the servo sys...

Claims

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Application Information

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IPC IPC(8): G05B13/04
Inventor 陈强施琳琳
Owner ZHEJIANG UNIV OF TECH
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