Development of a Self-Powered Digital System for Vibration Control

概要

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We report herein our innovative self-powered digital autonomous system for vibration control using a digital micro-processor. Our unit is a completely self-powered control system that does not require an external power-supply. Because this digital, self-directive, self-powered system is programmable and can be used to implement versatile control schemes. Our digital-autonomous controller is much more advanced and progressive than conventional analog-autonomous controllers. Moreover, our digital system can be implemented in multiple-input multiple-output systems (MIMO) to suppress even complicated structural vibrations. This is quite useful for energy-saving or energy-shortage systems, such as large space structures, artificial satellites, and isolated lunar bases, which are vulnerable to long night-time exposures without solar power. Experiments demonstrate that displacement is reduced to as much as 35%. Energy dissipation in experiments is measured using various methodologies. Finally, we investigate the influence of the voltage offset of the AD port of the microprocessor on both estimation error and suppression performance.