Title:
AUTO-TUNING METHOD AND DEVICE OF OVERSHOOT SUPPRESSION-USE FEED FORWARD TERM FOR STEP-FOLLOWING TIME
Document Type and Number:
WIPO Patent Application WO/2011/148882
Kind Code:
A1
Abstract:
Disclosed is an auto-tuning device (1) which is capable of inputting a response of an object to be controlled (4) of a feedback control system (2) which is provided with an FF control block (5) in an upstream side. In a state in which the FF control block (5) has been disabled, a step response for a step target value X is obtained, and from an apex of overshooting where the value is maximized and the magnitude of the imparted step target value, an overshoot factor α is obtained. In addition, from the amount of time after the step target value has been imparted until the apex of the overshoot is reached, the risetime T1 of the step response is obtained. To the FF control block (5), an instruction is imparted which causes output of a signal S such that a first-order lag for which a coefficient (a reciprocal of a time-constant) is set to be log (α/(1+α))/T1 is applied to the input step target value X.
Inventors:
KOBAYASHI Akira (1-1 Toyosu 3-Chome, Koto-k, Tokyo 10, 〒1358710, JP)
小林 陽 (〒10 東京都江東区豊洲三丁目１番１号 株式会社ＩＨＩ内 Tokyo, 〒1358710, JP)
FUJITA Yutaka (1-1 Toyosu 3-Chome, Koto-k, Tokyo 10, 〒1358710, JP)
藤田 穣 (〒10 東京都江東区豊洲三丁目１番１号 株式会社ＩＨＩ内 Tokyo, 〒1358710, JP)
小林 陽 (〒10 東京都江東区豊洲三丁目１番１号 株式会社ＩＨＩ内 Tokyo, 〒1358710, JP)
FUJITA Yutaka (1-1 Toyosu 3-Chome, Koto-k, Tokyo 10, 〒1358710, JP)
藤田 穣 (〒10 東京都江東区豊洲三丁目１番１号 株式会社ＩＨＩ内 Tokyo, 〒1358710, JP)
Application Number:
JP2011/061722
Publication Date:
December 01, 2011
Filing Date:
May 23, 2011
Export Citation:
Assignee:
IHI Corporation (1-1 Toyosu 3-Chome, Koto-ku Tokyo, 10, 〒1358710, JP)
株式会社ＩＨＩ (〒10 東京都江東区豊洲三丁目１番１号 Tokyo, 〒1358710, JP)
KOBAYASHI Akira (1-1 Toyosu 3-Chome, Koto-k, Tokyo 10, 〒1358710, JP)
小林 陽 (〒10 東京都江東区豊洲三丁目１番１号 株式会社ＩＨＩ内 Tokyo, 〒1358710, JP)
FUJITA Yutaka (1-1 Toyosu 3-Chome, Koto-k, Tokyo 10, 〒1358710, JP)
株式会社ＩＨＩ (〒10 東京都江東区豊洲三丁目１番１号 Tokyo, 〒1358710, JP)
KOBAYASHI Akira (1-1 Toyosu 3-Chome, Koto-k, Tokyo 10, 〒1358710, JP)
小林 陽 (〒10 東京都江東区豊洲三丁目１番１号 株式会社ＩＨＩ内 Tokyo, 〒1358710, JP)
FUJITA Yutaka (1-1 Toyosu 3-Chome, Koto-k, Tokyo 10, 〒1358710, JP)
International Classes:
G05B13/02; G05B11/32
Attorney, Agent or Firm:
HOTTA Minoru (ASA INTERNATIONAL PATENT FIRM, 4F Kenchiku-Kaikan, 26-20, Shiba 5-Chome, Minato-k, Tokyo 14, 〒1080014, JP)
Claims: