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Low speed sensorless control of a class of electrical machines
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| Author(s) |
R. Ortega; A. Astolfi; M. B. Becherif |
| Abstract |
The problem of sensorless (local) speed regulation of a class of electrical machines
is addressed and solved using a simple linear-time varying controller. The class, which
contains permanent magnet synchronous and stepper motors, consists of all fully actuated
machines whose magneto motive force can be approximated by a first harmonic
Fourier expansion. The controller—which contains the internal model of the steadystate
solution—is able to asymptotically reconstruct the control signal necessary to
achieve speed regulation, even in the presence of unknown but constant load torque.
To prove global stability and boundedness of the unforced system we exploit the by
now well–known passivity property of electro-mechanical systems. We work out in detail
the problem of speed regulation for a permanent magnet synchronous motor, for
which normalized simulations that illustrate the properties of the design are provided. |
| Download |
| Filename: | EPE-PEMC2002 - SSIN-09 - Ortega.pdf |
| Filesize: | 317.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-05-13 by System |
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