Title:
FOLLOW-UP CONTROL DEVICE
Document Type and Number:
Japanese Patent JPS63298609
Kind Code:
A
Abstract:
PURPOSE:To execute the follow without any error by providing a digital filter to output the sine wave signal string of a special frequency to a pulse input in a control device. CONSTITUTION:A follow-up control device is equipped with a motor 1, a head 2 fitted to this, a servo amplifier 3, a digital filter 4, a digital dynamic compensating device 5 and further, provided with an error detecting device 6, a D/A converter 7 and an A/D converter 8. At this time, as the above-mentioned filter 4, a filter to output, to a pulse input, the sine wave signal string of the frequency of the largest level out of the frequency components of the position fluctuation of a track is used. The above-mentioned compensating device 5 is designed based on the observer theory to stabilize the system. Thus, the device can stably follow up without any error to the position fluctuation component of a main track.
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Inventors:
UMEDA YOSHIO
Application Number:
JP13518887A
Publication Date:
December 06, 1988
Filing Date:
May 29, 1987
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G05B11/36; G05B21/02; G05D3/12; (IPC1-7): G05B11/36; G05B21/02; G05D3/12
Attorney, Agent or Firm:
Toshio Nakao