Sensorless position detection of a linear actuator using the resonance frequency

This paper presents a method to detect the position of a linear actuator without any position sensor. The actuator winding has a resonance frequency that is very related to the position of the linear actuator moving part. A sinusoidal scan voltage is superposed to the main voltage. Its frequency is close to the resonance frequency and therefore it is possible to measure the resulting scan current amplitude that allows position detection.


Published in:
2009 International Conference On Electrical Machines And Systems, Vols 1-3, 1032-1037
Presented at:
12th International Conference on Electrical Machines and Systems, Tokyo, JAPAN, Nov 15-18, 2009
Year:
2009
Publisher:
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa
ISBN:
978-1-4244-5177-7
Laboratories:




 Record created 2012-01-12, last modified 2018-09-13


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