The High-precision Position-free Sliding Mode Estimation Algorithm for Permanent Magnet Synchronous Motor
Aiming at the shortcomings of the traditional permanent magnet synchronous motor(PMSM)such as difficulty in sliding mode estimation algorithm and digital implementation,a new position-free sliding mode estimation algorithm of PMSM is proposed.The three-phase current of the motor is sampled by the AD module,and through Clark transform-Park transform-Clark inverse transform,it can be applied to position estimation of any PMSM and also applicable to AC induction motors at the same time.After verification and improvement,the algorithm is simple,versatile and reliable,which effectively improves the precision of the system.The motor can maintain good estimation performance in the full speed range,and has certain economic and social application value.
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