Stewart vibration isolation platform of piezoelectric fiber plate and control method of Stewart vibration isolation platform

Abstract

The invention discloses a Stewart vibration isolation platform of a piezoelectric fiber plate. The vibration isolation platform comprises a load upper platform, a foundation lower platform, a controller and a plurality of single-leg vibration isolation unit groups arranged between the load upper platform and the foundation lower platform, and each single-leg vibration isolation unit group comprises two single-leg vibration isolation units; each single-leg vibration isolation unit comprises a first diaphragm spring and a second diaphragm spring, wherein an MFC actuator and an MFC sensor are arranged on the two sides of the first diaphragm spring respectively, and an MFC actuator and an MFC sensor are arranged on the two sides of the second diaphragm spring respectively; and the MFC sensors and the MFC actuators are connected with the controller. Vibration deformation signals on each first diaphragm spring and each second diaphragm spring are collected through the MFC sensors and sent to the controller, the controller determines the control quantity needed for eliminating the vibration deformation signals and controls the MFC actuators, active vibration isolation is achieved, and the vibration effect is improved.

Description

technical field [0001] The invention relates to the technical field of vibration isolation devices, in particular to a Stewart vibration isolation platform of a piezoelectric fiber sheet and a control method thereof. Background technique [0002] At present, remote sensing satellites are mostly used in the investigation and analysis of environmental resources, natural disasters, urban planning and other aspects. When the optical equipment carried by remote sensing satellites works in space orbit, it is often affected by high-speed rotating parts such as swinging parts and momentum wheels. These factors will cause tiny vibrations in the remote sensing satellite imaging system, which greatly restricts the remote sensing satellite imaging. quality. Therefore, research on vibration isolation technology for precision equipment such as remote sensing satellite optical equipment is imperative. [0003] The traditional passive vibration isolation technology has a simple structure ...

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Problems solved by technology

[0003] The traditional passive vibration isolation technology has a simple structure and stable operation, and the vibration isolation effect has been difficult to meet the needs of actual use.

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