DocumentCode
3136064
Title
Sensorless position detection of a linear actuator using the resonance frequency
Author
Maridor, Joel ; Katic, Nikola ; Perriard, Yves ; Ladas, Dimitrios
Author_Institution
Integrated Actuators Lab. (LAI), Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland
fYear
2009
fDate
15-18 Nov. 2009
Firstpage
1
Lastpage
6
Abstract
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 Pmoving 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.
Keywords
linear machines; actuator winding; linear actuator; resonance frequency; sensorless position detection; Contactors; Hydraulic actuators; Laboratories; Permanent magnet motors; Position control; Proportional control; Pulse width modulation; Resonance; Resonant frequency; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on
Conference_Location
Tokyo
Print_ISBN
978-1-4244-5177-7
Electronic_ISBN
978-4-88686-067-5
Type
conf
DOI
10.1109/ICEMS.2009.5382641
Filename
5382641
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