Research on Sensorless Control of Permanent Magnet Synchronous Motor Based on Novel Sliding Mode Observer

This paper presents a novel sliding mode observer for the sensorless control of permanent magnet synchronous motors applied for magnetic recording. It can reduce the cost and space, and at the same time ensure good speed performance after the motor uses the novel sliding mode observer. Besides, it will make magnetic recording motor achieve a great development. Numerical simulations have been carried out to make verification of the presented strategy, which can not only retain the original strong robustness but also reduce the chattering effect to a great extent.