Steering system fault tolerance simulation of PMSM control

Civil aircraft Steering system is one of the core systems. PMSM is widely used in Steering systems because of their superior performance. When the motor fails, the magnetic field will become asymmetric. The original dq model no longer applies to motor failure. This paper presents a fault-tolerant systems based on the three-phase decoupling control scheme for PMSM, through the three-phase motor model does not decouple further improvement, the use of extracted neutral wire greatly enhances the three-phase permanent synchronous motor fault tolerance to failure in the broken phase state of emergency still have some work to ensure the operating characteristics of steering system.