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Title: A low cost position sensor for linear variable reluctance motor
Authors: Cheung, NC 
Keywords: Commutation
Inductance measurement
Linear motors
Position measurement
Reluctance motors
Issue Date: 2000
Publisher: IEEE
Source: Proceedings IPEMC 2000 : the third International Power Electronics and Motion Control Conference, August 15-18, 2000 Beijing, China, v. 2, p. 622-627 How to cite?
Abstract: This paper presents a novel position sensing system for a linear switched reluctance motor. By measuring the inductance variation on the fixed tooth track using two coiled devices aligned 90 degrees out of phase, the position and direction information of the moving platform can be obtained. To increase the resolution 16 times its original tooth pitch resolution, signal alignment and nonsinusoidal waveform interpolation techniques are employed. The proposed sensing system is designed, fabricated and implemented on a linear variable reluctance motion platform. Preliminary results show that the proposed sensing system can produce reliable position information with high accuracy and repeatability, and at high pulse output rate. This position information is useful for both accurate phase commutation and servo position feedback
ISBN: 7-80003-464-X
DOI: 10.1109/IPEMC.2000.884565
Appears in Collections:Conference Paper

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