Development of self-powered digital system for vibration control

Abstract

We report herein on how we developed our innovative digital self-powered autonomous system for vibration controller using a digital micro-processor. The invented unit is a completely self-powered control system that does not require any external power-supply at all. Nevertheless, this digital, self-directive, and self-powered approach enables the system to be programmable and thus versatile in control scheme. The digital-autonomous controller is much more advanced and progressive than conventional analog-autonomous ones that are clumsy and awkward. This digital system can be implemented in multiple-input multiple-output systems to suppress even complicated structural vibrations. This is quite useful for various applications to energy-saving or energy-shortage systems, such as large space structures, artificial satellites, and isolated lunar bases, which all are vulnerable to long night-time without solar-power. Experiments demonstrate that displacement is reduced by as much as 35 %, which is quite a striking and attractive number. Energy dissipation in experiments is measured by various cases. Furthermore, we investigate the influence of voltage offset of AD port of the microprocessor both on estimation error and on suppression performance. © 2012 The Japan Society of Mechanical Engineers.