寄生时栅式电机是基于时栅位移传感器设计的一种自带位置检测功能的驱动装置,在提取电机位置信息的过程中需要滤掉定子磁场的无效成分,此外电机内部的强磁场会随着速度的增加而变得毫无规律,影响转子位置的精确测量。针对上述干扰信号,...寄生时栅式电机是基于时栅位移传感器设计的一种自带位置检测功能的驱动装置,在提取电机位置信息的过程中需要滤掉定子磁场的无效成分,此外电机内部的强磁场会随着速度的增加而变得毫无规律,影响转子位置的精确测量。针对上述干扰信号,采用了低通滤波器、自适应线性神经网络(adaptive linear neuron,ADALINE)等来消除干扰,并通过实验证明该方法效果显著,得到了最优的行波信号,同时实现了寄生时栅式电机转子位置的精确测量。展开更多
Shaft alignment is an important technique during installation and maintenance of a rotating machine. A high-precision laser alignment system has been designed with dual PSDs (Position Sensing Detector) to change tradi...Shaft alignment is an important technique during installation and maintenance of a rotating machine. A high-precision laser alignment system has been designed with dual PSDs (Position Sensing Detector) to change traditional manual way of shaft alignment and to make the measurement easier and more accurate. The system is comprised of two small measuring units (laser transmitter and detector) and a PDA (Personal Digital Assistant) with measurement software. The laser alignment system with dual PSDs was improved on a single PSD system, and yields higher measurement accuracy than the previous design, and has been successful for designing and implements actual shaft alignment. In the system, the range of offset measurement is ±4 mm, and the resolution is 1.5 μm, with accuracy being less than 2 μm.展开更多
文摘寄生时栅式电机是基于时栅位移传感器设计的一种自带位置检测功能的驱动装置,在提取电机位置信息的过程中需要滤掉定子磁场的无效成分,此外电机内部的强磁场会随着速度的增加而变得毫无规律,影响转子位置的精确测量。针对上述干扰信号,采用了低通滤波器、自适应线性神经网络(adaptive linear neuron,ADALINE)等来消除干扰,并通过实验证明该方法效果显著,得到了最优的行波信号,同时实现了寄生时栅式电机转子位置的精确测量。
基金Project (No. 60337030) partly supported by the National NaturalScience Foundation of China
文摘Shaft alignment is an important technique during installation and maintenance of a rotating machine. A high-precision laser alignment system has been designed with dual PSDs (Position Sensing Detector) to change traditional manual way of shaft alignment and to make the measurement easier and more accurate. The system is comprised of two small measuring units (laser transmitter and detector) and a PDA (Personal Digital Assistant) with measurement software. The laser alignment system with dual PSDs was improved on a single PSD system, and yields higher measurement accuracy than the previous design, and has been successful for designing and implements actual shaft alignment. In the system, the range of offset measurement is ±4 mm, and the resolution is 1.5 μm, with accuracy being less than 2 μm.
