An adaptable feedback control solution for a drive system with variable parameters

The electric drive systems dedicated to speed and position control must ensure very good quality requirements both in dynamic and in static regimes. Moreover, the variations of the process parameters and also of the operating conditions require the development of performant control algorithms based on both the classical input-output strategy with conventional controllers as well as on advanced control strategies; in this context, the control of the process state variables is often a convenient technical alternative. Using the previous experience in development of conventional control solutions, this paper presents two state feedback control solutions for the speed control of a mechatronics application - the strip winding system - characterized by: (1) variable reference, (2) variable moment of inertia with constant increasing tendency and (3) variable parameters. The reverse problem, the unwinding with constant linear velocity of material wrapped on drum, raises additional control aspects. The proposed solutions are validated by means of digital simulations for three values of the moment of inertia.