ROTATION CONTROL APPARATUS AND ROTATION CONTROL METHOD

Title:

ROTATION CONTROL APPARATUS AND ROTATION CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/1999/017171

Kind Code:

A1

Abstract:

A rotation control apparatus that governs the speed of a rotor (103), wherein a phase difference compensation means (118) outputs a phase difference compensation signal (119) acoording to the phase difference between a rotation signal of the rotor (103) and a target signal, while a frequency difference compensation means (114) outputs a frequency difference compensation signal (115) according to the frequency difference between these signals. Based on these difference compensation signals, the rotor (103) is brake-controled. The use of the phase difference compensation signal (119) enables a PLL control to be realized, which assures a rotation control with a stable and quick response by pulling the rotation into the lock range. Further, by using the frequency difference compensation signal (115), the rotational speed of the rotor (103), even when it is largely deviated from the target signal, can be quickly pulled into the lock range, allowing control with a good response also at the startup of rotation of the rotor (103).

Inventors:

SHINKAWA OSAMU (JP)
IKEGAMI TOMIO (JP)
KOIKE KUNIO (JP)

Application Number:

PCT/JP1998/004394

Publication Date:

April 08, 1999

Filing Date:

September 30, 1998

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)
SHINKAWA OSAMU (JP)
IKEGAMI TOMIO (JP)
KOIKE KUNIO (JP)

International Classes:

G04C10/00; G04C11/00; H02P3/04; (IPC1-7): G04C10/00; G04B17/00; G04B1/10; H02J7/00; H02K7/18; H02P9/00

Foreign References:

JPH09182305A	1997-07-11
JPH08101284A	1996-04-16
JPH0836072A	1996-02-06
JP7119812B2	2022-08-17
JPS4984680A	1974-08-14
JPS58168398U	1983-11-10

Other References: