Control method of a spherical ultrasonic motor
Control method of a spherical ultrasonic motor
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DOI：
10.1109/aim.2003.1225534
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发表时间：
2003-07
期刊：
影响因子：
--
通讯作者：
E. Purwanto;S. Toyama
中科院分区：
文献类型：
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作者：
E. Purwanto;S. Toyama
本文提出了一种利用磁化转子和霍尔器件控制球形超声电机转子任意方位的控制方法。通过检测嵌入在每个定子中心的霍尔器件测量的磁极轴的输出电压来确定磁化转子的任意方位。该传感方法减小了整个结构的尺寸，并为转子提供了在更大范围内移动的空间，因为不受传感器设备(如旋转编码器或电位器)的几何限制。介绍了一种检测磁化转子任意方位的方法和磁化转子的磁化方法。实验结果表明，转子周围产生的磁场分布均匀，验证了所提出的控制方法的有效性。
In this paper, we propose a control method for controlling an arbitrary orientation of a rotor of a spherical ultrasonic motor (SUSM) by using a magnetized rotor and Hall devices. The arbitrary orientation of the magnetized rotor is determined by detecting the output voltage of the magnetic pole axis measured by Hall devices embedded in the center of each stator. The sensing method offers a size reduction for the entire structure as well as giving the rotor room to move in a wider range, since there is no restriction from geometry constraints of sensor devices, such as rotary encoders or potentiometers. We describe a method for detecting the arbitrary orientation of the magnetized rotor and the magnetization method of the rotor. The experimental results show that the magnetic field generated around the rotor is equally distributed, and confirm the validity of the proposed control method.