Hybrid Adaptive Control of Intelligent Structures with Simultaneous Precision Positioning and Vibration Suppression

摘要

This paper focuses on the dynamic analysis, simultaneous precision positioning and vibration suppression, and experiments of Active Composite Panels (ACPs). First, the dynamics of a panel with two surface-mounted PZT patches is analyzed and measured by the finite element method and experiments. A hybrid adaptive control scheme is then proposed to achieve precision positioning and vibration suppression simultaneously. The control scheme takes advantage of two adaptive feedforward controllers and an adaptive feedback controller. The simulation results of the hybrid adaptive controller are compared with those of a PID controller, showing that it can provide better precision position and faster vibration suppression. The experimental results demonstrate that the relative precision can reach 98.5% of the required position in large vibration level, verifying that the hybrid adaptive control scheme is reliable and efficient.