Ultra-low power drive system design for fiber positioner robot

Mengjie Zhu; Zhen Zhang; Chao Zhai

doi:10.1117/12.3005245

18 December 2023 Ultra-low power drive system design for fiber positioner robot

Mengjie Zhu, Zhen Zhang, Chao Zhai

Proceedings Volume 12965, AOPC 2023: Novel Technologies and Instruments for Astronomical Imaging and Spectroscopy; 1296507 (2023) https://doi.org/10.1117/12.3005245
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

An improvement project for LAMOST is to be implemented soon. In order to reduce the heat generation of the drive system and improve the observation accuracy. In this paper, an ultra-low power drive system for an integrated fiber positioner robot is designed, and its hardware drive circuit and low-power software driver are described in detail. Each module in the hardware driver circuit is designed with its size and power consumption in mind, and the driver board is powered by time-sharing and partitioning. A task scheduling mechanism based on STM32 low-power mode is designed in the software driver of the fiber positioner robot, which analyzes the idle state between tasks when it receives a control command task, and selectively enters the low-power mode after executing the drive task in each round. In order to evaluate the low-power characteristics of this ultra-low power drive system, we built a power consumption measurement platform. The experimental results show that the static power supply current of each driver board in this designed ultra-low power driver system is 16.20mA, and its static power consumption is reduced by 92.50% compared with the previous generation of fiber positioner robot driver boards.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Mengjie Zhu, Zhen Zhang, and Chao Zhai "Ultra-low power drive system design for fiber positioner robot", Proc. SPIE 12965, AOPC 2023: Novel Technologies and Instruments for Astronomical Imaging and Spectroscopy, 1296507 (18 December 2023); https://doi.org/10.1117/12.3005245

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