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DIGITAL TRACKING RESOLVER TO DIGITAL CONVERSION
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| Author(s) |
B. A. Murray; W. D. Li; M. F. McMullin |
| Abstract |
The brushless resolver and the resolver to digital converter are the ideal combination for motor commutation in AC servo drive systems. This transducer gives absolute position information and is well suited to the industrial environment. A hybrid tracking converter is normally used to process the resolver signals to give digital position and analog velocity signals. A digital implementation of the resolver to digital converter function eliminates the requirement for a hardware resolver converter in a digital servo drive. It also provides the velocity signal in the format required for a digital velocity loop. A number of possible systems are described including the use of look up tables and a software implementation of a tracking converter. The matching of the sample frequency and A / D converter to the ac servo requirements is discussed. A converter using the optimum combination of hardware and software elements to operate over a wide speed range is presented. A software tracking loop algorithm for this converter is developed. Simulation results for all the converter algorithms are presented. |
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| Filename: | Unnamed file |
| Filesize: | 3.529 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-08-09 by System |
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