NDLI: Estimation of the shaft position on low-cost DC actuators

Content Provider	IEEE Xplore Digital Library
Author	Letor, R. Testa, A. De Caro, S.
Copyright Year	2010
Description	Author affiliation: STMicroelectronics, Catania - Italy (Letor, R.) \|\| DFMTFA - University of Messina, Salita Sperone, 31 - 98166 - Italy (Testa, A.; De Caro, S.)
Abstract	Low power DC motors are today largely used as actuators in home automation, office automation, medical equipment and automotive fields. Among automotive applications of DC motors, those regarding windows lifters, seat and mirror adjustment or multi-zone air conditioning, require a quite precise position control, leading to the introduction of suitable sensors. Unfortunately, the extra cost of even a simple Hall effect position sensor may result unacceptable on these systems. In this paper a robust but inexpensive approach is described to sensorless estimate the angular shaft position by counting the periodical pulses of the armature current. Such a pulse counting approach is very simple in principle, as a constant amount of current pulses per round are generated in low power DC motors without any specific intervention. However, the frequency of the current pulses widely varies according to the speed, thus requiring a relatively complex and expensive adjustable bandwidth filter to be correctly detected. The proposed approach suitably solves this problem, leading to the implementation of an accurate position sensorless control system even on ultra-low cost microcontrollers equipping several electrically actuated automotive devices.
Starting Page	440
Ending Page	445
File Size	1322610
Page Count	6
File Format	PDF
ISBN	9781424463909
e-ISBN	9781424463923
DOI	10.1109/ISIE.2010.5637860
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-04
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DC motors Rotors Sensors Armature Estimation Coils Power harmonic filters
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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