EFFECT OF FREQUENCY VARIATION ON THE ACCURACY OF A SYNCHRO-TO-DIGITAL CONVERTER.
Abstract
A description is presented of the operation of a particular synchro-to-digital converter. A synchro-to-digital converter is a special form of an analog-to-digital converter which accepts at its input an analog three-wire synchro input with voltages representing the synchro shaft angle and provides a binary digital output which represents that angle. An analytical expression is developed which permits the determination of the error in the synchro-to-digital converter (on the basis of stated assumptions). The effects of the third-harmonic and quadrature signal components of the synchro input signal have been included. The magnitudes of these components may be varied by varying corresponding parameters in the expression. The errors for a wide range of frequencies were calculated in a general-purpose digital computer, and the results are presented graphically. An explanation of the cause of the error variation is presented. In addition, there is a discussion of the effects on the converter error of the variation of the parameters in the analytical expression. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1966
- Accession Number
- AD0635964
Entities
People
- K. S. Bonwit
Organizations
- Johns Hopkins University Applied Physics Laboratory