SYSTEM FOR CONTROLLING AN ENCASED PERMANENT MAGNET SYNCHRONOUS MOTOR CAPABLE OF DETECTING THE MALFUNCTION OF A CURRENT SENSOR AND A POSITION SENSOR OF A SYSTEM THROUGH MALFUNCTION DETECTING ALGORITHM AND A SENSOR MALFUNCTION DETECTING METHOD THEREOF

摘要

PURPOSE: A system for controlling an encased permanent magnet synchronous motor and a sensor malfunction detecting method thereof are provided to accurately detect the malfunction of a position sensor and a current sensor of the encased permanent magnet synchronous motor in real time by using designed algorithm.;CONSTITUTION: A nonlinear model of an encased permanent magnet synchronous motor is modeled(S100). The nonlinear model is converted into a linear model through input-output linearization(S200). An error is measured from the linear model by using a parity equation(S300). The usability of malfunction detecting algorithm is proved by a computer simulation(S400).;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) Finish; (S100) Modeling step for modeling an encased permanent magnet synchronous motor; (S200) Linear model converting step for converting the nonlinear model of the encased permanent magnet synchronous motor into a linear model through input-output linearization; (S300) Error measuring step for measuring an error from the linear model by using a parity equation; (S400) Algorithm proving step for proving the usability of suggested malfunction detecting algorithm by computer simulation