Title:
エンコーダ・ホーム位置信号を処理する方法及びシステム、並びに、コンピュータ使用可能媒体
Document Type and Number:
Japanese Patent JP5358311
Kind Code:
B2
Abstract:
An encoder position signal processing system comprises an analog encoder reader and a codewheel. The codewheel possesses an optical track that modulates the quadrature encoder signal amplitude in order to generate an amplitude change (home pulse) once per revolution of the codewheel. The analog encoder reader outputs a quadrature signal comprised of sine and cosine signals. The quadrature signal is converted to a magnitude signal that is sampled in order to generate a rate of change (ROC) signal, which increases the signal-to-noise ratio. An algorithm using the characteristic shape of the ROC home pulse signal can then be applied to the ROC signal to increases robustness of detecting the home pulse.
Inventors:
Michael E. Jones
David Dee Martenson
David Dee Martenson
Application Number:
JP2009146251A
Publication Date:
December 04, 2013
Filing Date:
June 19, 2009
Export Citation:
Assignee:
XEROX CORPORATION
International Classes:
G01D5/36; G01D5/244
Domestic Patent References:
| JP20063126A | ||||
| JP200517297A | ||||
| JP10318790A |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Kato Kazunori