Anti-windup for an active vibration isolation device: theory and experiments

In the paper, results from Teel and Kapoor (1997) are employed to improve the anti-windup protection for Newport Corporation's Elite 3/sup TM/ vibration isolation system. Anti-windup protection is required because, in the event of occasional very large disturbances, the signals from the high performance linear controller saturate the piezoelectric actuators. To achieve improved anti-windup action, the approach in the above paper is generalized, thus showing interesting extensions of that anti-windup scheme. Simulations and experiments show the effectiveness of the proposed solution.