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Title:
SERVO DEVICE
Document Type and Number:
Japanese Patent JPH05260783
Kind Code:
A
Abstract:

PURPOSE: To contrive to decrease a cost by reducing the number of wirings between an encoder and a servo controller.

CONSTITUTION: When the exclusive OR of Z'-signal taking the AND of A-phase signal Ain being two-phase signal and Z-phase signal Zin being origin signal by AND gate 3 and B-phase signal Bin being two-phase signal is taken by EOR gate 4, the B-phase signal is overlapped by the Z-phase signal and transmitted, the rise and fall of transmission signals A', B' are detected by D-FFs 5, 6 and EOR gates 7, 8, and the AND of the output of the EOR gates 7, 8 is taken by AND gate 9. Further, when the A'-signal is latched by that output, Zout-signal equivalent to the Z-phase signal Zin is extracted and a signal wire for transmitting the Z-phase signal becomes useless.


Inventors:
鈴木 稔
藤田 光悦
藍原 隆司
Application Number:
JP5296292A
Publication Date:
October 08, 1993
Filing Date:
March 12, 1992
Export Citation:
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Assignee:
富士電機株式会社
International Classes:
G08C19/22; H02P6/06; H02P6/08; H02P6/16; H02P6/17; (IPC1-7): H02P6/02; G08C19/22
Attorney, Agent or Firm:
松崎 清



 
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