Unknown Disturbance Estimation for a PMSM with a Hybrid Sliding Mode Observer
A hybrid sliding mode observer that combines high gain feedback and a high-order sliding mode term is developed to identify the time-varying disturbance for a permanent-magnet synchronous motor (PMSM). Based on the measurable current and the position, the unknown disturbance can be identified from t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2015-01-01
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| Series: | Mathematical Problems in Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/316360 |
| Summary: | A hybrid sliding mode observer that
combines high gain feedback and a high-order sliding mode
term is developed to identify the time-varying disturbance for
a permanent-magnet synchronous motor (PMSM). Based on the
measurable current and the position, the unknown disturbance
can be identified from the sliding mode term without digital
filter effect. It is then used to enhance the robustness of the
speed control dynamics. For ease of implementation in real
applications, such as DSP and FPGA, the proposed observer
is properly designed to avoid complex mathematical operators.
Simulation results are given to illustrate the performance of the proposed observer. |
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| ISSN: | 1024-123X 1563-5147 |