earticle

영어

A DSP-based sequential estimation of electrical parameters of a PWM inverter-fed interior permanent magnet synchronous motor (IPMSM) drive for auto-tuning applications is presented. The flux linkage and stator resistance are considered as main parameters and sequentially estimated using the state observer and model reference adaptive control (MRAC) scheme. As compared with other adaptation schemes such as a recursive least square method (RLSM), the proposed MRAC-based sequential parameter estimation is not sensitive to noise. Also, it does not require a strict condition like the persistent excitation. Considering that the most servo system has a current reference in the step waveform, it can be a very effective way of estimating electrical parameters. The whole control system is implemented using the digital signal processor (DSP) TMS320F28335 based controller and the effectiveness is verified through the comparative simulations and experiments.