Research on the state equation of the position loop and speed loop in the PMSM cascade sliding mode control

For the problems of the phase space mathematic model of the system in the design of the PMSM cascade sliding model variable structure control, based on an analysis of the dynamic mathematical model of PMSM and combined with the state space model and the equivalent structure chart of the system, the state equations of the position loop and speed loop have been deduced respectively and the unified state space model has been got.