Title:
AUTOMATIC OFFSET ADJUSTING METHOD OF DIGITAL SERVO SYSTEM
Document Type and Number:
Japanese Patent JPS60231203
Kind Code:
A
Abstract:
PURPOSE:To improve the accuracy of adjustment by detecting that generated oscillation is the one generated when a positional command is ''0'' and a servo is in the steady state, counting up the frequency of the vibration and adjusting offset voltage so that counted frequency is maximized. CONSTITUTION:Deviation parallel data 6.10 and the information of the least signified bit 6.2 are obtained from deviation counters 6.1. The information of the least significant bit 6.2 is converted into a voltage by an F/V converter 6.3 and then converted into a digital value 6.5 by an A/D converter and the digital value 6.5 is supplied to a microcomputer 6.6. The microcomputer 6.6 reads the deviation parallel data 6.10 and the digital value 6.5 and automatically adjusts an offset digitanl signal 6.7 so that the vibration of the least significant bit of the deviation is made the maximum frequency to output the adjusted value as an analog offset voltage through a D/A converter 6.8.
Inventors:
FUTAMI SHIGERU
Application Number:
JP8694184A
Publication Date:
November 16, 1985
Filing Date:
April 28, 1984
Export Citation:
Assignee:
YASKAWA DENKI SEISAKUSHO KK
International Classes:
G05B13/00; G05B13/02; G05D3/12; (IPC1-7): G05B13/02
Attorney, Agent or Firm:
Kobori Masashi
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