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Sensorless Position Measurement and Blocking Detection Based on Back EMF Sensing for Stepper Motor in Next-Generation Spectrograph Robots

机译:基于反电动势感应的下一代光谱机器人中无传感器位置测量和阻塞检测

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摘要

This work treats the problem of sensorless motion measurement and blocking detection for miniature stepper motor. Its purpose is to improve the reliability of high precision robotic positioners used in astrophysics to position optical fiber in a telescope. A method based on back EMF sensing is developed. For this purpose the phase of the motor are split and half of the coil are only dedicated for measurement in order to simplify signal treatment and improve noise immunity. This method is used to detect blocking and also to measure the real position of a motor undergoing periodical step loss.
机译:这项工作解决了微型步进电机的无传感器运动测量和阻塞检测问题。其目的是提高在天体物理学中用于在望远镜中定位光纤的高精度机器人定位器的可靠性。提出了一种基于反电动势感应的方法。为此目的,电动机的相位是分开的,线圈的一半仅用于测量,以简化信号处理并提高抗噪能力。此方法用于检测阻塞,还可以测量经历周期性步进损耗的电动机的实际位置。

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