Title:
位置を求める方法および装置
Document Type and Number:
Japanese Patent JP5837201
Kind Code:
B2
Abstract:
A position is determined by sensing a signal corresponding to a subsequence of marks in a non-periodic sequence of the marks on a scale. A coarse position PA is determined by matching the subsequence with all possible subsequences of the non-periodic sequence. Zero-crossings corresponding to rising edges of the signal and zero-crossings corresponding to falling edges of the signal are detected. An incremental position Pi is determined using the zero-crossings. The coarse and the incremental position are summed to obtain the position.
Inventors:
Agrawal, Amit
Thornton, Jay
Thornton, Jay
Application Number:
JP2014526724A
Publication Date:
December 24, 2015
Filing Date:
December 20, 2012
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01D5/249
Domestic Patent References:
| JP200453604A | ||||
| JP2004529344A | ||||
| JP8122097A | ||||
| JP580849A |
Attorney, Agent or Firm:
Michiharu Soga
Kajinami order
Kazuhiro Oyaku
Shunichi Ueda
Junichiro Yoshida
Satoshi Iino
Kajinami order
Kazuhiro Oyaku
Shunichi Ueda
Junichiro Yoshida
Satoshi Iino