G100011 Controller Design for Dual-stage Actuator in Load Device Considering Interference Suppression

Abstract

This paper presents a controller design approach to provide the precise force control considering interference suppression in load devices. In the control system, a pneumatic actuator and a voice coil motor are combined as a dual-stage actuator to expand the servo bandwidth. However, the interference between the actuators deteriorates the performance of disturbance suppression, especially at around the cross-over frequency. In this paper, therefore, PQ method is adopted to suppress the interference. The proposed approach has been verified by experiments using an actual load device.