PREDICTIVE CONTROL USING OPERATING MEANS WITH FEWER SET LEVELS

Title:

PREDICTIVE CONTROL USING OPERATING MEANS WITH FEWER SET LEVELS

Document Type and Number:

WIPO Patent Application WO/2000/002104

Kind Code:

A1

Abstract:

When calculating an operation value that can settle a predicted value of a control value to a target value for outputting to an operating means by using a control value, an operation value and an available disturbance value, the operation value is output after being rounded off to a set level after the addition of a correction value expressed by a linear equation consisting of the round-off error and a sign of change in the operation value in consideration of an error produced by rounding off an operation value to a set level in the past. A constant difference (deviation) produced between a time-wise average value of a control value and a target value within a range of a resolution can be approximated to zero by performing this correction at least in a condition where the difference between a control value and a target value is close to a resolution by an operating means. Especially, by using the above process in a control system having only an operating means with fewer set levels such as an ON/OFF control, a high-speed, accurate control capable of automatic tuning and feed-forwarding can be implemented by using a standard adaptive control.

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Inventors:

FUTATSUGI TAKEHIKO (JP)
SATO HIROO (JP)

Application Number:

PCT/JP1999/003519

Publication Date:

January 13, 2000

Filing Date:

June 30, 1999

Export Citation:

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Assignee:

ADTEX INC (JP)
FUTATSUGI TAKEHIKO (JP)
SATO HIROO (JP)

International Classes:

G05B13/04; G05B21/02; (IPC1-7): G05B13/04; G05B11/18; G06F17/17

Foreign References:

JPH05250003A	1993-09-28
JPH02249001A	1990-10-04
JPH04358201A	1992-12-11
JPH0464107A	1992-02-28
JPS6310201A	1988-01-16
JPH01204102A	1989-08-16
JPS63128401A	1988-06-01

Attorney, Agent or Firm:

ADTEX INC. (Kuraganomachi Takasaki-shi Gunma, JP)
ADTEX INC. (Kuraganomachi Takasaki-shi Gunma, JP)

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