Title:
SYSTEM FOR CONTROLLING POSITIONING
Document Type and Number:
Japanese Patent JP2714905
Kind Code:
B2
Abstract:
PURPOSE: To restrict the resonance of the body to be controlled with a simple construction by controlling the resonance characteristic of the body to be controlled by using a low-pass filter combining a notched filter and an oval function filter.
CONSTITUTION: A body 1 to be controlled such as a magnetic head having the shared characteristic is positioned at a command position. A position detection section 2 detects the shift position of the body 1 by means of a servo signal or the like. An arithmetic control section 3 consisting of such as DSPs generates a driving signal based on the position detection signal from the position detection section 2 and the command position signal from the host device. A driving section 4 consisting of voice coil motors shifts the body 1 by means of the driving signal from the section 3. A low-pass filter 7 consisting of the notched filter 5 and the oval function filter 6 controls the resonance characteristic of the body 1. Thus, the mechanical resonance characteristic of the body 1 can be controlled with a simple construction.
Inventors:
Eiji Okamura
Application Number:
JP1677492A
Publication Date:
February 16, 1998
Filing Date:
January 31, 1992
Export Citation:
Assignee:
富士通株式会社
International Classes:
B41J19/04; B41J29/38; G05B13/02; G05B19/19; G05D3/12; G05D19/02; G11B21/08; G11B21/10; (IPC1-7): G05D3/12; G05D3/12; B41J19/04; G05B13/02; G05D19/02
Attorney, Agent or Firm:
Shoji Kashiwaya (1 person outside)
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