Automatic magnetic flux measurement of micro plastic-magnetic rotors

作者：Wang Qingdong; Lin Mingxing^*; Song Aiwei

来源：Measurement Science and Technology, 2015, 26(7): 075005.

DOI：10.1088/0957-0233/26/7/075005

• micro plastic-magnetic rotors
• magnetic flux
• automatic measurement
• measurement principle
• measurement precision

Micro plastic-magnetic rotors of various sizes and shapes are widely used in industry, their magnetic flux measurement is one of the most important links in the production process, and therefore some technologies should be adopted to improve the measurement precision and efficiency. In this paper, the automatic measurement principle of micro plastic-magnetic rotors is proposed and the integration time constant and the integrator drift's suppression and compensation in the measurement circuit are analyzed. Two other factors influencing the measurement precision are also analyzed, including the relative angles between the rotor magnetic poles and the measurement coil, and the starting point of the rotors in the coil where the measurement begins. An instrument is designed to measure the magnetic flux of the rotors. Measurement results show that the measurement error is within +/- 1%, which meets the basic requirements in industry application, and the measurement efficiency is increased by 10 times, which can cut down labor cost and management cost when compared with manual measurement.

• 出版日期2015-7
• 单位山东大学