Research on the Weak Signal Extraction Method with Adaptive Stochastic Resonance Based on the Time Grid Sensor for PMSM

Because the output signal of time grid sensor is so weak and easily affected by disturbing noise, it difficult to extract induction containing position information, when used detect rotor permanent magnet synchronous motor (PMSM). In this paper, an adaptive monostable stochastic resonance method proposed realize detection sensor. The tunnel magnetoresistance effect (TMR) adopted change magnetic field in method, model about PMSM constructed. theory applied As problem tuning parameters system, genetic algorithm optimize system. experimental results show that based on can effectively PMSM. This solves extraction for PMSM, accuracy also improved.