Adaptive Speed Control of PMSMs with Unknown Load Torque
| Authors: | Koumboulis Fotis, Halkis Institute of Technology, Greece
Kouvakas N. D., Halkis Institute of Technology, Greece
Panagiotakis G. E., Halkis Institute of Technology, Greece
Pantelios A. G., University of Ioannina, Greece |
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| Topic: | 6.3 Power Plants and Power Systems |
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| Session: | Power Plants and Power Systems Modelling and Control |
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| Keywords: | permanent magnet motors, AC machines, adaptive control, model following control, disturbance localization, dynamic output feedback, nonlinear control systems, speed control, industrial control, robust performance |
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Abstract
The problem of speed control of a permanent magnet synchronous motor (PMSM) with unknown parameters and unknown external load torque is formulated and solved as an adaptive control problem that meets the requirements of asymptotic command following with simultaneous asymptotic disturbance attenuation. The key point is to identify the system without knowledge, estimation or measurement of the unknown disturbance. The satisfactory performance of the results is illustrated through application of the proposed nonlinear dynamic controller to a PMSM for three cases: first, no external load torque; second, smoothly starting steady external torque; third, unknown noisy and fast varying load torque.
