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Self-adaptive fuzzy H infinite control method for micro-gyroscope

An adaptive fuzzy and micro-gyroscope technology, applied in adaptive control, general control system, control/regulation system, etc.

Inactive Publication Date: 2013-10-02
HOHAI UNIV CHANGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, the adaptive fuzzy H infinite control has not been applied in the control system of the micro gyroscope

Method used

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  • Self-adaptive fuzzy H infinite control method for micro-gyroscope
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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0062] The adaptive fuzzy H infinite control method of the micro gyroscope comprises the following steps:

[0063] 1. Establishment of non-dimensionalized dynamic equations for micro gyroscopes

[0064] A micro-vibration gyroscope generally consists of three components: a mass supported by an elastic material, an electrostatic drive device and a sensing device. The main function of the electrostatic drive circuit is to drive and maintain a constant amplitude of the micro-vibration gyroscope during vibration; Circuits are used to sense the position and velocity of the mass. The micro gyroscope can be simplified as a damped vibration system composed of a mass and a spring. For a micro gyroscope, it can be considered that the mass is restricted to move only in the x-y plane, but not along the Z axis. In fact, due to the existence of manufacturi...

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Abstract

The invention discloses a self-adaptive fuzzy H infinite control method for a micro-gyroscope and designs a controller by a method based on a linear matrix inequality. The controller comprises two parts, namely a basic fuzzy controller and a robust control item; the basic fuzzy controller is structured by using a fuzzy logic system and is used for approximating the ideal controller of the micro-gyroscope; the robust control item is used for overcoming the influence on the output tracking error of a micro-gyroscope system from external interference and ensuring the closed loop stability of the micro-gyroscope system. According to the self-adaptive fuzzy H infinite control method, a Lyapunov-based method is adopted for self-adaptive adjustment of parameters in a fuzzy control system so as to ensure the stability of the fuzzy control system. The controller designed by the invention is used for approximating a nonlinear equation to make up for a nonlinear phenomenon in the micro-gyroscope system to achieve the purpose of accuracy control, improves the stability and reliability of the micro-gyroscope system and achieves a high industrial utilization value.

Description

technical field [0001] The invention relates to a control system of a micro gyroscope, in particular to an adaptive fuzzy H infinite control method of a micro gyroscope. Background technique [0002] Microgyroscopes are the most commonly used sensors for measuring angular velocity in many applications such as navigation, guidance, and control stability. A microgyroscope is a device that uses the Coriolis force (i.e., the deflection force of the Earth's rotation) to transfer energy from one axis to another. The traditional mode of operation lacks the ability to drive the gyroscope from one mode to a known oscillation. Motion, while the detected Coriolis acceleration is coupled to the sensing mode of vibration, which is perpendicular to the driving mode, and the response of the vibration sensing mode provides information about the practical angular velocity. Due to the existence of errors in the manufacturing process and the influence of the ambient temperature, the differenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/00
Inventor 隽婉茹费峻涛
Owner HOHAI UNIV CHANGZHOU
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