The Switching Message Estimator for Network-Based Motion Control Systems
Missing commands from the interpolator caused by the dropout effect of network transmission will cause motion error in motion plants implemented on network-based control systems (NCSs). Dropout data can be properly recovered by applying different message estimators to improve motion contouring accur...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Control Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/262378 |
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| _version_ | 1850159633287610368 |
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| author | Chen-Chou Hsieh Pau-Lo Hsu |
| author_facet | Chen-Chou Hsieh Pau-Lo Hsu |
| author_sort | Chen-Chou Hsieh |
| collection | DOAJ |
| description | Missing commands from the interpolator caused by the dropout effect of network transmission will cause motion error in motion plants implemented on network-based control systems (NCSs). Dropout data can be properly recovered by applying different message estimators to improve motion contouring accuracy. This study shows that the dropout rate and the distribution of missing commands dominate the motion error, and that more centralized missing commands result in a higher maximum contouring error. The short-window dropout quantity (SDQ) is proposed in this paper to estimate the network quality based on the dropout rate and its distribution of the missing data. Furthermore, according to the condition of missing data based on the SDQ, the switching least-square estimator (LSE) is proposed to compensate for missing motion commands. Simulation and experimental results on the two-axis AC servo motor NCS indicate that motion contouring accuracy is greatly improved by applying the proposed estimator. |
| format | Article |
| id | doaj-art-b95f28f2dd7e437f9114308b2003d38e |
| institution | OA Journals |
| issn | 1687-5249 1687-5257 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Control Science and Engineering |
| spelling | doaj-art-b95f28f2dd7e437f9114308b2003d38e2025-08-20T02:23:27ZengWileyJournal of Control Science and Engineering1687-52491687-52572012-01-01201210.1155/2012/262378262378The Switching Message Estimator for Network-Based Motion Control SystemsChen-Chou Hsieh0Pau-Lo Hsu1Department of Electrical Engineering, National Chiao-Tung University, 1001 Ta Hsueh Road, Hsinchu 300, TaiwanDepartment of Electrical Engineering, National Chiao-Tung University, 1001 Ta Hsueh Road, Hsinchu 300, TaiwanMissing commands from the interpolator caused by the dropout effect of network transmission will cause motion error in motion plants implemented on network-based control systems (NCSs). Dropout data can be properly recovered by applying different message estimators to improve motion contouring accuracy. This study shows that the dropout rate and the distribution of missing commands dominate the motion error, and that more centralized missing commands result in a higher maximum contouring error. The short-window dropout quantity (SDQ) is proposed in this paper to estimate the network quality based on the dropout rate and its distribution of the missing data. Furthermore, according to the condition of missing data based on the SDQ, the switching least-square estimator (LSE) is proposed to compensate for missing motion commands. Simulation and experimental results on the two-axis AC servo motor NCS indicate that motion contouring accuracy is greatly improved by applying the proposed estimator.http://dx.doi.org/10.1155/2012/262378 |
| spellingShingle | Chen-Chou Hsieh Pau-Lo Hsu The Switching Message Estimator for Network-Based Motion Control Systems Journal of Control Science and Engineering |
| title | The Switching Message Estimator for Network-Based Motion Control Systems |
| title_full | The Switching Message Estimator for Network-Based Motion Control Systems |
| title_fullStr | The Switching Message Estimator for Network-Based Motion Control Systems |
| title_full_unstemmed | The Switching Message Estimator for Network-Based Motion Control Systems |
| title_short | The Switching Message Estimator for Network-Based Motion Control Systems |
| title_sort | switching message estimator for network based motion control systems |
| url | http://dx.doi.org/10.1155/2012/262378 |
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