Application of hybrid control on the anti-vibration platform
Date Issued
2004
Date
2004
Author(s)
YAO, CHUN-WEI
DOI
zh-TW
Abstract
The objective of this paper is to apply the active and passive control simultaneously to reduce the vibration level of structure. We design an anti-vibration platform for measurement system that needs a low vibration condition while it is in the bad environmental vibration condition.
The context of this article divides into two parts: (1) Studying on the characteristic of active vibration control. (2) Set up a model of the anti-vibration platform and its numerical simulation of vibration control.
1.Studying on active control and passive control:
Generally, the active control uses powered device to provide control force and reduce the vibration level of structures. The passive control modifies the stiffness and mass of structure and adding an energy absorber to change the dynamic characteristic of structures. The active control may be limited in response sensitivity of driving force. For high frequency dominated vibration, the response of the control device may not correctly. Although increasing the control force can improve the control response, the high power facilities may be huge in size and the cost may be very expensive. Only using passive control to reduce the vibration level, the available frequency band is very limited. For wide bandwidth of vibration environment, passive control is not suitable.
In this paper we try to find a suitable combination of two control types with the optimum control gain and the optimum structural parameters to achieve the minimization of the vibration level of structures.
2.Set up and numerical simulation of an anti-vibration platform:
An anti-vibration platform for vibration sensitive working device has been set up. FEM software ANSYS and mathematical software MATLAB are used to optimize the spring constants and the control gains of platform.
Subjects
減振工作平台
Anti-vibration platform
Type
thesis
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