Controller reset strategy for anti-windup based on L2 gain analysis

When a calculated value of one control input approaches the limitations, the automatic resets of controllers are widely used to prevent windup. However, the automatic reset should only be performed after confirmation that it will not adversely affect the transient performance of the overall control system that may lead to another windup. In this paper, we apply the L₂ gain analysis for the entire time to the evaluation of transient responses immediately after a reset, and we propose a new strategy for the automatic resets of controllers, such that windup does not accompany any resets. It succeeds in establishing the applicability of controller resets to anti-windup measures.