Integrator Anti-Windup Design for Servo-Controllers with Position Constraints

A control design modification to prevent integrator windup for position saturated servo-controllers is introduced. The design is based on the formalism of Control Barrier Functions and represents an anti-windup integrator modification for position-limited servo-controllers. The method is applicable to Linear Time Invariant Multi-Input-Multi-Output open-loop stable continuous time systems. A flight control application example of the developed anti-windup control solution is discussed.