Academic Journal
A 4 mm Micro Servo Control System in Fiber Positioner
| العنوان: | A 4 mm Micro Servo Control System in Fiber Positioner |
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| المؤلفون: | Shaoxiong Guo, Yan Yang, Chao Zhai |
| المصدر: | Actuators, Vol 12, Iss 12, p 470 (2023) |
| بيانات النشر: | MDPI AG, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials LCC:Production of electric energy or power. Powerplants. Central stations |
| مصطلحات موضوعية: | miniature hollow-cup motor, fiber positioner, multi-target fiber optic spectroscopic telescopes, astronomical spectroscopic technologies and instruments, Materials of engineering and construction. Mechanics of materials, TA401-492, Production of electric energy or power. Powerplants. Central stations, TK1001-1841 |
| الوصف: | As multi-object spectrographs (MOSs) continue to evolve, a notable trend has emerged—the increasing accommodation of fiber positioners on ever-more compact focal planes. This progression has seen the traditional stepper motors being supplanted by more space-efficient miniature hollow-cup motors. A significant challenge faced in the employment of these 4 mm diameter motors is the absence of compatible angle sensors, resulting in reliance on open-loop control methods for positioning. Addressing this challenge, this paper introduces a novel miniature angle sensor designed specifically for 4 mm hollow-cup motors, and presents a newly formulated closed-loop control scheme, which leverages this sensor to achieve accurate positioning. This marks the first implementation of an angle closed-loop control system within a 4 mm miniature hollow-cup motor used in MOS fiber positioners. Experimental evidence suggests that this sensored closed-loop mode substantially improves upon the energy efficiency and precision of fiber positioner placement, compared with traditional open-loop stepper control methods. Furthermore, the integration of these microsensors mitigates collision risks during the concurrent operation of fiber positioners by deactivating the motor power supply to prevent potential damage to the system. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-0825 |
| Relation: | https://www.mdpi.com/2076-0825/12/12/470; https://doaj.org/toc/2076-0825 |
| DOI: | 10.3390/act12120470 |
| URL الوصول: | https://doaj.org/article/5d22544229384832835aad085565d7ab |
| رقم الانضمام: | edsdoj.5d22544229384832835aad085565d7ab |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20760825 |
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| DOI: | 10.3390/act12120470 |