contributor author | Ulu, Erva | |
contributor author | Gecer Ulu, Nurcan | |
contributor author | Cakmakci, Melih | |
date accessioned | 2017-05-09T01:06:28Z | |
date available | 2017-05-09T01:06:28Z | |
date issued | 2014 | |
identifier issn | 0022-0434 | |
identifier other | ds_136_03_034503.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/154344 | |
description abstract | This paper presents a new method to increase the measurement resolution of quadrature encoders. The method contains an adaptive signal correction step and a signal interpolation step. Measured encoder signals contain imperfections including amplitude differences, mean offsets, and quadrature phase shift errors. With the proposed method, these errors are first corrected by using recursive least squares (RLS) estimation with exponential forgetting and resetting. Then, the corrected signals are interpolated to higher order sinusoids using a quick access lookup table generated offline. The position information can be obtained with the conversion of these highorder sinusoids to binary pulses and counting the zero crossings. Using the method presented here, a 10 nm measurement resolution is obtained using an encoder with 1 خ¼m offtheshelf resolution. Validation of the method and the practical limitations are also presented. Further increase in the resolution can be achieved by minimizing the effects of the electrical noise. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Development and Validation of an Adaptive Method to Generate High Resolution Quadrature Encoder Signals | |
type | Journal Paper | |
journal volume | 136 | |
journal issue | 3 | |
journal title | Journal of Dynamic Systems, Measurement, and Control | |
identifier doi | 10.1115/1.4026315 | |
journal fristpage | 34503 | |
journal lastpage | 34503 | |
identifier eissn | 1528-9028 | |
tree | Journal of Dynamic Systems, Measurement, and Control:;2014:;volume( 136 ):;issue: 003 | |
contenttype | Fulltext | |