Title:
速度検出装置
Document Type and Number:
Japanese Patent JP6757287
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the problem in which factors serving errors of velocity detection when detecting a velocity from an incremental type rotary encoder of a two-phase output are a fluctuation between the two-phase outputs of the incremental type rotary encoder, deformation of a two-phase output waveform by an interface circuit built in by a velocity detection device, a length of a signal line path between the incremental type rotary encoder and the velocity detection device, an ambient temperature and the like.SOLUTION: Four pulse outputs are obtained from a two-phase output of an incremental type rotary encoder. Four rotary position counters are provided that count these four pulse outputs as an input. A rotation velocity is continuously detected from the four rotary position counters, which in turn solves the problem.SELECTED DRAWING: Figure 1
Inventors:
Ikuo Kotani
Application Number:
JP2017078028A
Publication Date:
September 16, 2020
Filing Date:
April 11, 2017
Export Citation:
Assignee:
Toyo Denki Manufacturing Co., Ltd.
International Classes:
G01P3/489; G01D5/244
Domestic Patent References:
| JP2015230187A | ||||
| JP2010145085A | ||||
| JP2009236872A | ||||
| JP200234274A | ||||
| JP6118090A |
Foreign References:
| US5402229 |