Title:
PULSE COUNTER
Document Type and Number:
Japanese Patent JP3942124
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a pulse counter producing a zero-phase signal using a pulse generator having no zero-phase signal output, producing a zero-phase signal even when a pulse generator having a zero-phase signal output is used and can detect single revolution of a motor surely while eliminating the effect of noise through combination of these two zero-phase signals.
SOLUTION: A pulse detector receiving an incremental pulse train being outputted from a pulse generator having no zero-phase signal output depending on the rotation of a motor generates a zero-phase signal for each revolution of the motor. Even when a pulse generator having a zero-phase signal output is used, a pulse counter 1 generates a zero-phase signal and these two zero-phase signals are compared in order to remove trouble due to noise thus detecting single revolution of the motor surely.
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Inventors:
Ikuo Kotani
Application Number:
JP8280298A
Publication Date:
July 11, 2007
Filing Date:
March 13, 1998
Export Citation:
Assignee:
Toyo Denki Manufacturing Co., Ltd.
International Classes:
G01D5/244; G01P3/481; G01D5/242; H02P29/00; (IPC1-7): G01D5/242; G01P3/481; //H02P5/00
Domestic Patent References:
| JP9229713A | ||||
| JP6186056A | ||||
| JP7004991A |