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Vol. 144, No. 9, September 2012, pp. 101-112

 

Bullet

 

High Accuracy Resolver to Digital Converter Based on Modified Angle Tracking Observer Method
 
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: 11 July 2012   /Accepted: 21 September 2012   /Published: 28 September 2012

Digital Sensors and Sensor Sysstems

 

Abstract: A resolver is a rotary transformer where the magnitude of the energy through the resolver windings varies sinusoidally as the shaft rotates. These are unsurpassed in its ability to reliably supply rotary angular position data in the harsh industrial environments. This paper presents the design of software based resolver to digital converter based on modified angle tracking observer method to estimated the rotor shaft angle. The proposed resolver to digital converter has been successfully implemented in MATLAB Simulink and the results are verified by simulation for different rotor speeds. This method brings down the hardware cost and increases the accuracy and reliability.

 

Keywords: Resolver, resolver to digital converter, angle tracking observer, synchronous demodulator

 

 

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