Stewart vibration isolation platform of a piezoelectric fiber sheet and its control method

Abstract

The invention discloses a Stewart vibration isolation platform of a piezoelectric fiber sheet. The vibration isolation platform comprises: a load upper platform, a foundation lower platform, a controller, and a plurality of single legs arranged between the load upper platform and the foundation lower platform Each of the single-leg vibration-isolation unit groups includes two single-leg vibration-isolation units; the single-leg vibration-isolation unit includes a first diaphragm spring and a second diaphragm spring, and the first diaphragm Both sides of the spring and the second diaphragm spring are respectively provided with an MFC actuator and an MFC sensor; the MFC sensor and the MFC actuator are both connected to the controller. The present invention collects the vibration deformation signals on each of the first diaphragm spring and the second diaphragm spring through the MFC sensor and sends them to the controller, and the controller determines the control amount required to eliminate the vibration deformation signal and controls the MFC actuator, thus realizing Active vibration isolation improves the vibration effect.

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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