Abstract
High-precision position control of linear-switched reluctance motor (LSRM) is important in motion-control industry. The static model-based controller sometimes cannot give satisfactory output performance due to the inherent nonlinearities of LSRM and the uncertainties of the system. In this paper, a self-tuning regulator (STR) based on the pole-placement algorithm is proposed for high-precision position tracking of the LSRM. Following the time-scale characteristics analysis of LSRM position-tracking system and force-characteristic investigation, the position-tracking model is treated as a second-order system. Different from the static model-based control schemes, the dynamic model of the LSRM can be obtained by online estimation. Also, some practical aspects are taken into account. Owing to the unmodeled dynamics and high-frequency measurement noises, there are some oscillations in the practical control signals, and they can be reduced by a properly designed filter. Both the simulation and experimental results demonstrate that, in the control of the proposed STR, the position-tracking system can reproduce the reference signal with the desired performance in harsh ambient. These results confirm that the method is effective and robust in the high-precision position tracking of LSRM.
Original language | English |
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Article number | 5482128 |
Pages (from-to) | 2820-2827 |
Number of pages | 8 |
Journal | IEEE Transactions on Power Electronics |
Volume | 25 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Dec 2010 |
Keywords
- Linear-switched reluctance motor (LSRM)
- motor-winding-excitation scheme
- nonlinear characteristic
- position control
- saturation
- self-tuning regulator (STR)
ASJC Scopus subject areas
- Electrical and Electronic Engineering