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Higher-Order Sliding Mode Observer for Speed and Position Estimation in PMSM

Abstract : This paper presents a speed and position estimation method for the permanent magnet synchronous motor (PMSM) based on higher-order sliding mode (HOSM) observer. The back electromotive forces (EMFs) in the PMSM are treated as unknown inputs and are estimated with the HOSM observer without the need of low-pass filter and phase compensation modules. With the estimation of back EMFs, an accurate estimation of speed and rotor position can be obtained. Further, the proposed method completely eliminates chattering. Experimental results with a 26 W three-phase PMSM demonstrate the effectiveness of the proposed method.
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https://hal-uphf.archives-ouvertes.fr/hal-03644609
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Suneel Kumar Kommuri, Kalyana Chakravarthy Veluvolu, Michael Defoort, Yeng Chai Soh. Higher-Order Sliding Mode Observer for Speed and Position Estimation in PMSM. Mathematical Problems in Engineering, Hindawi Publishing Corporation, 2014, 2014, pp.589109. ⟨10.1155/2014/589109⟩. ⟨hal-03644609⟩

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