Stacking Integrators Without Sacrificing the Overshoot in Reset Control Systems

TL;DR

This paper introduces a novel reset control system architecture that allows stacking integrators to improve steady-state precision without increasing overshoot, overcoming traditional limitations of linear control systems.

Contribution

A new reset control architecture is proposed that reduces overshoot and wind-up issues while maintaining the benefits of stacked integrators.

Findings

Significant reduction in overshoot with stacked integrators

Achieves no-overshoot performance in reset control systems

Numerical simulations verify improved steady-state accuracy

Abstract

According to the well-known loop-shaping control design approach, the steady-state precision of control systems can be improved by stacking integrators. However, due to the waterbed effect in linear control systems, such an action will worsen the transient response by increasing overshoot and creating wind-up problems. This paper presents a new architecture for rest control systems that can significantly decrease the overshoot and create a no-overshoot performance even in presence of stacked integrators. The steady-state analysis of the proposed system will also show that improved precision expected due to stacked integrators can be achieved as well. A numerical simulation study is presented to verify the results and the tuning guide presented.