High precision position control of Linear Switched Reluctance Motor for short distance

In this paper, a passivity-based control (PBC) algorithm with disturbance reject is proposed to obtain precise position control of a Linear Switched Reluctance Motor (LSRM) driving system in short distance applications. In the framework of the two-time-scale analysis, the whole system is decomposed into two reduced-order models. With the models, an improved PBC algorithm is designed to reject the nonlinear friction in the outer loop. Three simulations are performed and the results demonstrate the improved control algorithm is effective for the LSRM position tracking system in short distance applications.