DocumentCode :
1670458
Title :
A new closed-loop converter for sinusoidal encoders — Preliminary results
Author :
Ben-Brahim, Lazhar ; Benammar, Mohieddine ; Mahran, Ahmed ; Alhomsi, Ahmed
Author_Institution :
Qatar Univ., Doha, Qatar
fYear :
2009
Firstpage :
1
Lastpage :
9
Abstract :
Sinusoidal position transducers provide accurate and reliable representation of the mechanical position of their shafts. The sine/cosine transducers signals may be used in open loop or closed loop arrangements for the determination of position. The present work describes a novel implementation of the classical PLL closed loop method without using VCO, DAC, counter and look-up tables. The proposed method makes use of the excitation signal of the resolver to estimate the sine/cosine of the estimated angle. The proposed method is simpler than the available techniques, and may be implemented easily using digital or basic analogue electronic circuitry. Beside simplicity of implementation, the proposed schemes offer the advantage of robustness to amplitude fluctuation of the transducer excitation signal. This paper describes the concept of the new method, simulation results and preliminary experimental results.
Keywords :
convertors; transducers; PLL closed loop method; analogue electronic circuitry; closed-loop converter; sine-cosine transducers signals; sinusoidal encoders; sinusoidal position transducers; Demodulation; Phase locked loops; Shafts; Signal resolution; Stator windings; Table lookup; Transducers; Uniform resource locators; Virtual colonoscopy; Voltage; LUT; PLL; R/D converter; Resolver; Robustness; position Sensor;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
Type :
conf
Filename :
5279118
Link To Document :
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