Adaptive backstepping sliding-mode active vibration isolation control method for flexible spacecraft

A technology of adaptive control and flexible spacecraft, which is applied in the field of flexible spacecraft, can solve the problems of not considering the unknown upper bound of vibration amplitude, poor active vibration isolation control effect, etc., and achieve low-frequency vibration suppression and good effect

Inactive Publication Date: 2018-11-16
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0002] Traditional flexible spacecraft do not consider the unknown upper bound of vibration ampli

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  • Adaptive backstepping sliding-mode active vibration isolation control method for flexible spacecraft
  • Adaptive backstepping sliding-mode active vibration isolation control method for flexible spacecraft
  • Adaptive backstepping sliding-mode active vibration isolation control method for flexible spacecraft

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[0027] The present invention will be further described below in conjunction with the description of the drawings and the specific embodiments.

[0028] Such as figure 1 As shown, an adaptive backstepping sliding mode active vibration isolation control method for flexible spacecraft. Aiming at the problem of active vibration isolation on flexible spacecraft, an adaptive backstepping sliding mode based on the Stewart vibration isolation platform is designed Active vibration isolation control method. The purpose of the control method is to solve the problem of vibration isolation of low-frequency vibration generated by the flexible attachment on the spacecraft during the space attitude movement. The invention adopts the Newton-Euler method to express the dynamic model of the Stewart vibration isolation platform, uses a voice coil motor as an actuator, and gives the dynamic equation of the Stewart vibration isolation platform after decoupling. Then the backstepping method and slidi...

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Abstract

The invention provides an adaptive backstepping sliding-mode active vibration isolation control method for a flexible spacecraft. The method comprises representing the dynamic equation of a Stewart vibration isolation platform by a Newton-Euler method; using a voice coil motor as an actuator to give the decoupled dynamic equation of the Stewart vibration isolation platform; designing a backstepping sliding-mode controller by combining a backstepping method with sliding-mode control; and for the case where the upper boundary of external disturbance is unknown, adding adaptive control to the active vibration isolation control by using the characteristics of adaptive control so as to design an adaptive backstepping sliding-mode controller. The adaptive backstepping sliding-mode active vibration isolation control method has a good active vibration isolation control effect, especially in the case where the vibration amplitude is unknown.

Description

technical field [0001] The invention relates to a flexible spacecraft, in particular to an adaptive backstep sliding mode active vibration isolation control method for a flexible spacecraft. Background technique [0002] The vibration isolation control of traditional flexible spacecraft does not consider the unknown upper bound of vibration amplitude, and the effect of active vibration isolation control is poor. Contents of the invention [0003] In order to solve the problems in the prior art, the present invention provides an adaptive backstep sliding mode active vibration isolation control method for a flexible spacecraft with better active vibration isolation control effect. [0004] The invention provides an adaptive backstepping sliding mode active vibration isolation control method for a flexible spacecraft, using the Newton-Euler method (Newton-Euler method) to represent the dynamic equation of the Stewart vibration isolation platform, and using a voice coil motor ...

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 吴爱国梁康董瑞琦张颖
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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