NDLI: Control and design of the spherical pointing motor

Content Provider	IEEE Xplore Digital Library
Author	Bederson, B.B. Wallace, R.S. Schwartz, E.L.
Copyright Year	1993
Description	Author affiliation: Bellcore, Morristown, NJ, USA (Bederson, B.B.)
Abstract	A miniature pan-tilt actuator, the spherical pointing motor (SPM) has been built. The SPM is an absolute positioning device, designed to orient a small camera sensor in two degrees-of-rotational-freedom. It is 4 cm5 cm6 cm and weighs 160 g. The operating principle of the SPM is to orient a permanent magnet to the magnetic field induced by three orthogonal coils by applying the appropriate ratio of currents to the coils. The open-loop control and design of the SPM are described. Physical characteristics and velocity measurements of the prototype are reported. The SPM is modeled with a simple second order system. Without control, it oscillates substantially when a single impulse is applied. By applying a second impulse without feedback, the oscillation can be reduced by as much as a factor of ten.
Starting Page	630
Ending Page	636
File Size	579278
Page Count	7
File Format	PDF
ISBN	0818634502
DOI	10.1109/ROBOT.1993.291888
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-05-02
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scanning probe microscopy Coils Open loop systems Actuators Permanent magnet motors Cameras Magnetic sensors Permanent magnets Magnetic field measurement Velocity measurement
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
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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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