Delay-Compound-Compensation Control for Photoelectric Tracking System Based on Improved Smith Predictor Scheme
High control bandwidth is usually restricted in a photoelectric tracking system (PTS) based on a Charge-Couple Device(CCD) with time delay, which hinders a good tracking performance. Generally, a model-based delay-compensation controller called Smith predictor (SP) can help increase the controller g...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9748005/ |
| _version_ | 1818009860246077440 |
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| author | Yong Luo Wenchao Xue Wei He Kang Nie Yao Mao Josep M. Guerrero |
| author_facet | Yong Luo Wenchao Xue Wei He Kang Nie Yao Mao Josep M. Guerrero |
| author_sort | Yong Luo |
| collection | DOAJ |
| description | High control bandwidth is usually restricted in a photoelectric tracking system (PTS) based on a Charge-Couple Device(CCD) with time delay, which hinders a good tracking performance. Generally, a model-based delay-compensation controller called Smith predictor (SP) can help increase the controller gain to promote the bandwidth by separating delay from the control loop. However, the performance promotion is insufficient because the delay still stays in the forward channel which causes errors between output and input. And the increase of the controller gain is still limited due to the effect of model mismatch on stability. In this paper, to solve the problems, a delay-compound-compensation control (DCCC) based on improved SP by trajectory prediction and velocity feedforward is proposed. The additional trajectory prediction is used to further eliminate the effect of delay existing in the forward channel. The additional velocity feedforward is used to further reform the transfer characteristics limited by the controller gain. A Kalman filter-based design method of trajectory prediction is presented and the optimal design principle of feedback and feedforward controllers is given in the face of model mismatch. Experiments demonstrate that the DCCC is valid and could greatly promote the tracking performance in the low frequency. |
| first_indexed | 2024-04-14T05:48:16Z |
| format | Article |
| id | doaj.art-1e56bceabb1b4acca47e7917e6375ac2 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-14T05:48:16Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-1e56bceabb1b4acca47e7917e6375ac22022-12-22T02:09:13ZengIEEEIEEE Photonics Journal1943-06552022-01-011431810.1109/JPHOT.2022.31642029748005Delay-Compound-Compensation Control for Photoelectric Tracking System Based on Improved Smith Predictor SchemeYong Luo0Wenchao Xue1https://orcid.org/0000-0003-0637-9413Wei He2https://orcid.org/0000-0001-7006-8885Kang Nie3Yao Mao4https://orcid.org/0000-0003-1785-2018Josep M. Guerrero5https://orcid.org/0000-0001-5236-4592Nanjing University of Information Science and Technology, Nanjing, Jiangsu, ChinaLSC, NCMIS, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, ChinaNanjing University of Information Science and Technology, Nanjing, Jiangsu, ChinaKey Laboratory of Optical Engineering, Institute of Optics and Electronics, Chinese Academy of Science, University of Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Optical Engineering, Institute of Optics and Electronics, Chinese Academy of Science, University of Chinese Academy of Sciences, Beijing, ChinaDepartment of Energy Technology, Aalborg University, Aalborg, DenmarkHigh control bandwidth is usually restricted in a photoelectric tracking system (PTS) based on a Charge-Couple Device(CCD) with time delay, which hinders a good tracking performance. Generally, a model-based delay-compensation controller called Smith predictor (SP) can help increase the controller gain to promote the bandwidth by separating delay from the control loop. However, the performance promotion is insufficient because the delay still stays in the forward channel which causes errors between output and input. And the increase of the controller gain is still limited due to the effect of model mismatch on stability. In this paper, to solve the problems, a delay-compound-compensation control (DCCC) based on improved SP by trajectory prediction and velocity feedforward is proposed. The additional trajectory prediction is used to further eliminate the effect of delay existing in the forward channel. The additional velocity feedforward is used to further reform the transfer characteristics limited by the controller gain. A Kalman filter-based design method of trajectory prediction is presented and the optimal design principle of feedback and feedforward controllers is given in the face of model mismatch. Experiments demonstrate that the DCCC is valid and could greatly promote the tracking performance in the low frequency.https://ieeexplore.ieee.org/document/9748005/Smith predictortime delaycharge-couple devicedelay-compound-compensationtrajectory predictionvelocity feedforward |
| spellingShingle | Yong Luo Wenchao Xue Wei He Kang Nie Yao Mao Josep M. Guerrero Delay-Compound-Compensation Control for Photoelectric Tracking System Based on Improved Smith Predictor Scheme IEEE Photonics Journal Smith predictor time delay charge-couple device delay-compound-compensation trajectory prediction velocity feedforward |
| title | Delay-Compound-Compensation Control for Photoelectric Tracking System Based on Improved Smith Predictor Scheme |
| title_full | Delay-Compound-Compensation Control for Photoelectric Tracking System Based on Improved Smith Predictor Scheme |
| title_fullStr | Delay-Compound-Compensation Control for Photoelectric Tracking System Based on Improved Smith Predictor Scheme |
| title_full_unstemmed | Delay-Compound-Compensation Control for Photoelectric Tracking System Based on Improved Smith Predictor Scheme |
| title_short | Delay-Compound-Compensation Control for Photoelectric Tracking System Based on Improved Smith Predictor Scheme |
| title_sort | delay compound compensation control for photoelectric tracking system based on improved smith predictor scheme |
| topic | Smith predictor time delay charge-couple device delay-compound-compensation trajectory prediction velocity feedforward |
| url | https://ieeexplore.ieee.org/document/9748005/ |
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