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Vol. 150, No. 3, March 2013, pp. 1-11




Review of RDC Soft Computing Techniques for Accurate Measurement of Resolver Rotor Angle


1 Chandra Mohan Reddy Sivappagari, 2 Nagabhushan Raju Konduru

1 JNTUA College of Engineering, Pulivendula, 516390, India

Tel.: 9441023800

2 Sri Krishnadevaraya University, Anantapur, 515002, India Tel.: 9866590987

E-mail: email2cmr@gmail.com, knrbhushan@yahoo.com


Received: 16 November 2012 /Accepted: 19 March 2013 /Published: 29 March 2013

Digital Sensors and Sensor Sysstems


Abstract: A resolver is a position sensor or transducer that measures the instantaneous angular position of the rotating shaft to which it is attached. Resolver produces two amplitude modulated signals; SIN and COS as output signals. These two signals need to be demodulated and converted to digital signals before they can be used for control. There are several techniques available in the literature to measure the rotor shaft angle. This paper focuses on the design of both hardware and software based resolver to digital converter (RDC) techniques available in the literature. This literature review helps the researchers to know about all these methods and plan future work on RDCs to improve the angle tracking performance.


Keywords: Resolver, Resolver to digital converter, Angle tracking observer, Inverse tangent method


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