A Switched Predictive Controller for an Electrical Powertrain System With Backlash

In this paper, a switched model predictive control strategy is applied for the speed regulation of a powertrain system composed of an electrical motor connected to a rotating load through an elastic shaft and a gear, which introduces backlash. The system is described through a piecewise-affine model and a different control law is designed for each system dynamics, which allows obtaining very simple controllers, suitable for digital implementation in embedded systems. A switched Kalman filter is employed in order to estimate the unmeasurable system states. The proposed control strategy is tested through both simulations and experiments, and is compared against a traditional proportional-integral controller.

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