Abstract
This paper describes the effectiveness of an active vibration isolation system that uses an active dynamic absorber as a servo accelerometer in a low-frequency range and a vibration control device in a high-frequency range. Complimentarily, it uses an air actuator as a control device in a low-frequency range and a low-cost accelerometer as a sensing device in a high-frequency range. The main aim of this research is to develop a high performance active vibration isolation system that is lower in cost than conventional active vibration system. It was experimentally demonstrated that the acceleration in a low frequency range can be detected from the control input of the absorber. In addition, by feeding back the estimated acceleration, the vibration was actually attenuated.
