Servo Control Strategy of Single Axis Shaking Table in Active Structural Control System
The purpose of this paper is to develop an approach to improve the tracking characteristics of a single axis shaking table actuation system, which is used in active structural control system. Firstly, the process of constructing analytical model of servo-hydraulic actuation system is presented. The proposed model, in the form of the total shaking table transfer function, accounts for the specific physical characteristics of the single axis shaking table. Due to low natural frequency and small hydraulic actuator damping, the single axis shaking table cannot meet the experimental requirement Therefore, three states feedback and three state feed-forward control algorithm based on pole-assignment principle is applied to extend the acceleration bandwidth. Lastly, the shaking table experiments are tested and the experimental results indicate that the controller is effective and reliable.
Z. Y. Qu and Z. M. Ye, "Servo Control Strategy of Single Axis Shaking Table in Active Structural Control System", Applied Mechanics and Materials, Vols. 58-60, pp. 2446-2449, 2011