Design of Robust PID Controllers with Constrained Control Signal Activity

摘要: This thesis presents a new method for design of PI and PID controllers with the level control signal activity taken into consideration. The main reason why D-part is often disabled in industrial loops because it leads to sensitivity measurement noise. A frequently varying too high amplitude will very likely lead actuator wear tear. For this extremely important any take account. proposed are derived using newly developed software that solves an IAE minimization problem respect H∞ robustness constraints on sensitivity- complementary function. shown be fast, easy use robust giving well-performing controllers. By extracting noise from process value real plant, one can estimate its effect variance. time constant low-pass filter, through which measurements fed, varied constrained activity. comparing variance IAE, user also able weigh estimated performance. has give promising results both simulated examples plants such as recirculation flow process. Optimal Youla parametrized used quality check designed tool determining when these valid choices compared more advanced (Less)