Position Estimation Using Linear Hall Sensors for Permanent Magnet Linear Motor Systems

This paper proposes a new scaleless position estimation method. From the industrial perspective, the Hall sensor has several advantages: tiny size, light weight, extremely low cost, and insensitivity to environmental contamination and external disturbance. Compared to the square wave Hall sensor, th...

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Veröffentlicht in:IEEE transactions on industrial electronics (1982) 2016-12, Vol.63 (12), p.7644-7652
Hauptverfasser: Kim, Jonghwa, Choi, Seibum, Cho, Kwanghyun, Nam, Kanghyun
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container_title IEEE transactions on industrial electronics (1982)
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creator Kim, Jonghwa
Choi, Seibum
Cho, Kwanghyun
Nam, Kanghyun
description This paper proposes a new scaleless position estimation method. From the industrial perspective, the Hall sensor has several advantages: tiny size, light weight, extremely low cost, and insensitivity to environmental contamination and external disturbance. Compared to the square wave Hall sensor, the linear Hall sensor provides more detailed information along the position. However, for combining more than two linear Hall sensors, the sensor offset, the difference in scale, and the unwanted phase shift between them and the harmonics would decrease the validity and reliability of sensor measurement. The fast Fourier transform and the fixed point iteration method are applied to compensate for those issues without any low-pass filter or additional signal conditioning. The effectiveness of the proposed scheme is verified through a prototype permanent magnet linear synchronous motor system.
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From the industrial perspective, the Hall sensor has several advantages: tiny size, light weight, extremely low cost, and insensitivity to environmental contamination and external disturbance. Compared to the square wave Hall sensor, the linear Hall sensor provides more detailed information along the position. However, for combining more than two linear Hall sensors, the sensor offset, the difference in scale, and the unwanted phase shift between them and the harmonics would decrease the validity and reliability of sensor measurement. The fast Fourier transform and the fixed point iteration method are applied to compensate for those issues without any low-pass filter or additional signal conditioning. 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From the industrial perspective, the Hall sensor has several advantages: tiny size, light weight, extremely low cost, and insensitivity to environmental contamination and external disturbance. Compared to the square wave Hall sensor, the linear Hall sensor provides more detailed information along the position. However, for combining more than two linear Hall sensors, the sensor offset, the difference in scale, and the unwanted phase shift between them and the harmonics would decrease the validity and reliability of sensor measurement. The fast Fourier transform and the fixed point iteration method are applied to compensate for those issues without any low-pass filter or additional signal conditioning. 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subjects Electric motors
Fast Fourier transform (FFT)
Fast Fourier transformations
fixed point iteration method
Fourier transforms
Hall effect
initial position alignment
linear Hall sensor
Low pass filters
Magnetic sensors
Newton method
permanent magnet linear motor
Permanent magnet motors
Permanent magnets
position estimation
Position sensing
scaleless motor system
Sensor arrays
Sensor systems
Sensors
Square waves
Synchronous motors
Temperature sensors
Weight reduction
title Position Estimation Using Linear Hall Sensors for Permanent Magnet Linear Motor Systems
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