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1 February 1987 Microprocessor based dual speed angle converter
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Proceedings Volume 0641, Acquisition, Tracking, and Pointing; (1987)
Event: 1986 Technical Symposium Southeast, 1986, Orlando, United States
During the last few years there has been a push to increase shaft resolution as well as pointing accuracy of positioning systems. In order to do this it is necessary to improve the methods of shaft angle encoding. In the process of meeting higher resolutions, several beneficial side results have appeared. This paper deals with these beneficial results as well as the methodology used to gain these results. The system is based on a microprocessor based two-speed combiner that provides a moderately fast conversion time along with a tachometer output. The use of a microprocessor in conjunction with two resolver to digital converters provides a high degree of flexibility. The processor accepts two speed data from the resolvers and produces a binary shaft position. Since this is under software control flexibility is acheived. With proper converters 21 bit resolution is obtainable with rotational rates greater than 100 degrees per second. Other benefits created by the use of a processor are the ability to do software error correction on the shaft angle data to correct for mechanical alignment problems. The approach also provides moderately fast conversion time and with proper converter choice a solid state tachometer is available that provides .1% linearity.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bruce J. Black and Donnie Allen "Microprocessor based dual speed angle converter", Proc. SPIE 0641, Acquisition, Tracking, and Pointing, (1 February 1987);


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