Ultra-low power drive system design for fiber positioner robot

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI:10.1117/12.3005245

Mengjie Zhu, Zhen Zhang, Chao Zhai

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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.

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光纤定位机器人的超低功耗驱动系统设计

LAMOST 的改进项目即将实施。为了降低驱动系统的发热量，提高观测精度。本文设计了一种集成光纤定位机器人的超低功耗驱动系统，并详细介绍了其硬件驱动电路和低功耗软件驱动程序。硬件驱动电路中的每个模块在设计时都考虑了其体积和功耗，驱动板采用分时和分区供电。在光纤定位器机器人的软件驱动器中设计了一种基于 STM32 低功耗模式的任务调度机制，该机制在接收到控制命令任务时会分析任务之间的空闲状态，并在每轮执行完驱动任务后选择性地进入低功耗模式。为了评估这种超低功耗驱动系统的低功耗特性，我们搭建了一个功耗测量平台。实验结果表明，本设计的超低功耗驱动系统中每块驱动板的静态供电电流为 16.20mA，与上一代光纤定位机器人驱动板相比，其静态功耗降低了 92.50%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Applied Optics and Photonics China

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