Anti-windup Solution for a Two Degrees of Freedom Controller

ANIBAL ZANINI; LUCRECIA GAVA

Barcelona

Congreso; IMAACA; 2017

This paper proposes an anti-windup solution for a STR controller with two degrees of freedom (2DoF). The main advantage of this kind of controllers is that the dynamic for tracking references can be different than the one specified for disturbance rejection. As a design condition, it is also proposed to eliminate the steady state error so that, the presence of an integral term in the controller is mandatory. Due to the physical limitations and an unstable factor in the controller, an anti-windup strategy is needed. These logics or non-linear schemes are extensively studied for classical controllers but not for 2DoF strategies.The proposal has been verified both in simulation and on a physical plant.Keywords: two-degree control, anti-windup, integral action.