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首页> 外文会议>2019 IEEE International Conference on Industrial Technology >Comparative Analysis for Sensorless Displacement Estimation of Electrostatic Film Motors in Different Motor Configurations
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Comparative Analysis for Sensorless Displacement Estimation of Electrostatic Film Motors in Different Motor Configurations

机译：不同电机配置下的静电膜电机无传感器位移估计的比较分析

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摘要

A sensorless displacement estimation method for an electrostatic film motor has been proposed in the previous work. Differently from the existing built-in sensor systems proposed for the electrostatic film motors, the proposed method can estimate the slider position by directly utilizing the driving currents. Therefore, the sensing method can be realized in a simple hardware; it does not require additional hardware components. In its trade-off, the performance of the sensing method can be considerably affected by the motor structures and the operation voltage waveforms. However, the previous work only investigated the sinusoidal-voltage operation for a regular (non-skewed) motor. In this article, we investigate the performance of the sensing method in several different conditions. As the motor configurations, this article deals with two types: a regular (non-skewed) motor and a skewed motor. As the voltage waveforms, the article investigates both a sinusoidal waveform and a pulse waveform. Through numerical simulations and an experiment, the article shows the performance of the sensing method in the above conditions. It was confirmed that the proposed method can work well for the skew motor during the sinusoidal-voltage operation, at least in the ideal condition without noise. However, it was also suggested that the sensing method is more susceptible to noise in case of skewed motors. For pulse waveforms, it was shown that the method did not work well due to the large current spikes at the voltage switchings. Detailed investigation of the signals suggested that by ignoring the voltage switchings, the sensing method would work even for the pulse waveforms.
机译：在先前的工作中已经提出了用于静电膜马达的无传感器位移估计方法。与为静电膜马达提出的现有内置传感器系统不同，提出的方法可以通过直接利用驱动电流来估计滑块位置。因此，可以在简单的硬件中实现感测方法。它不需要其他硬件组件。在权衡取舍时，传感方法的性能会受到电机结构和工作电压波形的很大影响。但是，以前的工作仅研究了常规（非偏斜）电动机的正弦电压操作。在本文中，我们研究了几种不同条件下传感方法的性能。作为电动机配置，本文涉及两种类型：常规（非偏斜）电动机和偏斜电动机。作为电压波形，本文研究了正弦波形和脉冲波形。通过数值模拟和实验，本文证明了在上述条件下该方法的性能。已经证实，所提出的方法至少在理想的无噪声条件下，对于正弦电压运行期间的偏斜电动机都能很好地工作。但是，也有人提出，在电动机倾斜的情况下，传感方法更容易受到噪声的影响。对于脉冲波形，表明由于电压开关处的大电流尖峰，该方法效果不佳。对信号的详细研究表明，通过忽略电压开关，即使对脉冲波形也可以使用感应方法。

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