Instantaneous Force Control of a Linear Switched Reluctance Actuator

This paper is focused on the modeling and analysis of the instantaneous force control of a Linear Switched Reluctance Actuator (LSRA). The conventional control method to reduce thrust ripple uses force distribution functions (FDF) taking into consideration the overall thrust reference and the machine parameters to convey a phase current reference (force is indirectly controlled). In this work two strategies are followed and compared, namely the direct instantaneous thrust control with pulse width duty-ratio adjustment (DITC-PWM) and cosine FDF. The analysis is made in Matlab/ Simulink software package and by using a machine model grounded in lookup tables characteristic data.