Azimuth Control for Large Aperture Telescope Based on Segmented Arc Permanent Magnet Synchronous Motors | |
Song XL(宋晓莉); Wang DX(汪达兴) | |
2021-07 | |
发表期刊 | Research in As tronomy and As trophysics |
卷号 | 21期号:7页码:86-92 |
摘要 | 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 |
关键词 | techniques: telescopes instrumentation: miscellaneous methods: miscellaneous techniques |
学科领域 | 天文技术与方法 |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.niaot.ac.cn/handle/114a32/1959 |
专题 | 期刊论文 |
作者单位 | 南京天文光学技术研究所 |
推荐引用方式 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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