Azimuth Control for Large Aperture Telescope Based on Segmented Arc Permanent Magnet Synchronous Motors | |
Song XL(宋晓莉)![]() ![]() | |
2021-07 | |
Source Publication | Research in As tronomy and As trophysics
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Volume | 21Issue:7Pages:86-92 |
Abstract | A tracking control algorithm based on active disturbance rejection controller (ADRC) is proposed to overcome the telescope’s mount fluctuation. The fluctuations are caused by internal and external disturbance when the large aperture telescope runs at ultra-low speed with direct drive. According to the high-precision and high-stability requirements of a large aperture telescope, the ADRC position controller The tracking differentiator of ADRC is designed to undergo a transition process to avoid overshoot in the position loop.The speed of target tracking process is observed by the extended state observer and the position information in the system is estimated in real time. The current control variable of the segmented arc PMSM is generated by implementing a non-linear state error feedback control law. The simulation results demonstrate that the proposed control strategy can not only accurately estimate the position and speed of the tracking target, but also estimate the disturbance to compensate the control variables. Experiments showed that the speed error is less than 0.05′′s-1 |
Keyword | techniques: telescopes instrumentation: miscellaneous methods: miscellaneous techniques |
Subject Area | 天文技术与方法 |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.niaot.ac.cn/handle/114a32/1959 |
Collection | 期刊论文 |
Affiliation | 南京天文光学技术研究所 |
Recommended Citation GB/T 7714 | Song XL,Wang DX. Azimuth Control for Large Aperture Telescope Based on Segmented Arc Permanent Magnet Synchronous Motors[J]. Research in As tronomy and As trophysics,2021,21(7):86-92. |
APA | Song XL,&Wang DX.(2021).Azimuth Control for Large Aperture Telescope Based on Segmented Arc Permanent Magnet Synchronous Motors.Research in As tronomy and As trophysics,21(7),86-92. |
MLA | Song XL,et al."Azimuth Control for Large Aperture Telescope Based on Segmented Arc Permanent Magnet Synchronous Motors".Research in As tronomy and As trophysics 21.7(2021):86-92. |
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