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A New Method of Designing Resolver to Digital Converter Using FPGA
|關鍵字:||resolver;解角器;R/D converter;RDC;FPGA;解角數位轉換器||出版社:||精密工程學系所||引用:|| G. S. Sheu, Linear Resolver-to-Digital Converter Using CPLD, Master Thesis, Department of Power Mechanical Engineering, National Tsing Hua University, Taiwan (ROC), 2000.  Hiroshi Kushihara, Digital Angle Conversion Method, U.S Patent No. US5,815,424, Sep. 29, 1998.  S. P. Vlahu, Direct Resolver to Digital Converter, U.S. Patent No. US5,912,638, Jun. 15, 1999.  Geoffrey S. Boyes, Synchro and Resolver Conversion, Analog Devices Inc., 1980.  C. Attaianese, G. Tomasso, D. De Bonis, Low Cost Resolver-to-Digital Converter, IEEE International, pp.917-921, 2001.  B. A. Murray, W. D. Li, Digital tracking R/D converter with hardware error calculation using TMS320C14, Control in Power Electronic IEE Conference Publication, pp. 472-477, v.4. n.377, 1993.  Choong-Hyuk Yim, In-Joong Ha, A Resolver-to-Digital Conversion Method for Fast Tracking, IEEE Transaction on Industrial Electronics, Vol. 39, No. 5, Oct. 1992.  D. C. Hanselman, Resolver Signal Requirements for High Accuracy Resolver-to-Digital Conversion, IEEE Transactions on Industrial Electronics, pp. 556-561, v.37, n.6, Dec. 1990.  D. C. Hanselman, Techniques for Improving Resolver-to-Digital Conversion Accuracy, IEEE Transactions on Industrial Electronics, pp. 501-504, v.38, n.6, Dec. 1991.  D. C. Hanselman, Signal Processing Techinques for Improved Resolver-to-Digital Conversion Accuracy, IECON'90., 16th Annual Conference of IEEE Publication, pp. 6-10, v.1, Nov. 1990.||摘要:||
The use of resolvers and resolver-to-digital (R/D) converters in industrial applications is increasing in the past few years. Meanwhile, as the need for high speed and high precision in Adjustable Speed Drives (ASD) is increasing imperiously, traditional analog R/D converters are replaced by digital R/D converters. Compare to traditional analog R/D converters, the advantage of using digital R/D converters is that it has high accuracy, good noise resistance, and low cost. Here, an improved R/D converter developed using FPGA codes is performed in this research. This proposed R/D converter utilizes synchronous detectors for signal demodulation, and A/D converters for analog to digital signal conversion, as well as built-in look-up table for angular data conversion.
The result of this research shows the effectiveness of this proposed R/D converter system and is feasible to implement into the modern ASD and its applications.
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