Signal process and electrical interpolation for optical encoder
碩士 === 明道大學 === 光電暨能源工程學系碩士班 === 98 === This study uses the theorem of resistance chain subdivision to proceed to an electrical interpolation with interpolation factor of 5. The theorem is base on superposition theorem of Theremin’s that uses resistance to cause a series of phase shift of sinusoidal...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2010
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/09785495274255674258 |
| Summary: | 碩士 === 明道大學 === 光電暨能源工程學系碩士班 === 98 === This study uses the theorem of resistance chain subdivision to proceed to an electrical interpolation with interpolation factor of 5. The theorem is base on superposition theorem of Theremin’s that uses resistance to cause a series of phase shift of sinusoidal signals. Those sinusoidal signals are converted into square wave by using comparator. Then the high resolution will be obtained by logic circuit. This work also presents the error analysis of the resistance chain. The error of resistors is direct effect the shift of phase. The relative error of the resistors is 2% which this experiment used. The phase-shift error of the electrical interpolation with interpolation factor of 5 is 0.36°.
|
|---|