Abstract
Position-sensorless positioning control system of interior permanent magnet synchronous motors (IPMSMs) has been energetically researched for high reliability and cost reduction. To achieve fast response of positioning servo systems, accurate parameters of IPMSMs are required. The parameters vary due to temperature and/or ageing, which results in degradation of the positioning control performance. Thus, this study proposes a position-sensorless adaptive positioning control system for IPMSMs using the dynamic certainty equivalence principle for stable parameter identification. In addition, comb filters are used for fast estimation instead of low-pass filters. Experiments are demonstrated to validate the effectiveness and the feasibility of the proposed method.
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