Practical Application Of Energy-recycling Semi-active Vibration Suppression Method To An Actual Satellite Structural Model

Paper number

IAC-07-C2.5.09

Author

Prof. Kenji Minesugi, Japan Aerospace Exploration Agency (JAXA)/ISAS, Japan

Coauthor

Prof. Junjiro Onoda, Japan Aerospace Exploration Agency (JAXA)/ISAS, Japan

Coauthor

Mr. Shigeru Shimose, Japan Aerospace Exploration Agency (JAXA)/ISAS, Japan

Coauthor

Dr. Kanjuro Makihara, University of Cambridge, United Kingdom

Coauthor

Mr. Takuya Yabu, Japan Aerospace Exploration Agency (JAXA)/ISAS, Japan

Year

2007

Abstract

Electrical components and mechanical devices on a satellite and a launch vehicle are exposed in the severe vibration environment at a launch phase. Then, vibration suppression is one of the key technology to improve their reliability and cost. A great number of studies on it have been done and many methods have been proposed. However, it seems that there exists many difficulties in applying practically these methods to an actual satellite because of, for example, the restriction of the space and the weight.

We have proposed the innovative energy-recycling semi-active vibration suppression method. This method uses piezoelectric transducers connected to a passive electrical circuit that reverses the polarity of electric charge and voltage for the purpose of vibration suppression. The electrical energy converted from mechanical energy by the transducers is reused to suppress the vibration of the structure, instead of simply being dissipated. This method has displayed a high performance compared to the existing passive and semi-active vibration suppression methods with piezoelectric transducers. It has also shown that any mode can be specified as a control mode and self-sensing control can be implemented with a Kalman filter in MDOF system. These have been verified in numerical simulations and experiments using a ten bay truss model.

As the first step in applying practically this innovative method to an actual satellite and so on, we execute experiments to apply the method to a satellite model, which is an actual structural test model of the interplanetary probe flying by the Halley’s comet. About a hundred of piezoelectric transducers are attached to the model and connected to the passive electrical circuit. We firstly verify the validity of the method and the devices including the transducers and the circuit under the equivalent vibration environment at a launch phase. Since this method is basically one of the bang-bang type control method, we investigate the spillover phenomenon that excites higher modes of the model. Moreover, we try to implement the novel circuit instead of the passive circuit. It does not need any power source outside, but is driven only by the electrical energy converted by the transducers.

In the presentation, we will report an investigation into the experimental results of this semi-active vibration suppression method applied to the actual satellite model.

Abstract document

IAC-07-C2.5.09.pdf

Manuscript document

IAC-07-C2.5.09.pdf (🔒 authorized access only).

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