Title:
CONTROL DEVICE WITH FUZZY INFERENCE FUNCTION
Document Type and Number:
Japanese Patent JP3279745
Kind Code:
B2
Abstract:
PURPOSE: To apply fuzzy inference like an on-line by switching an operation part and an inference part without suddenly changing them and to apply fuzzy inference to a real plant without anxiety.
CONSTITUTION: A control device combining feedback control and feedforward control is provided with a feedforward operation part 23 for finding out a feedforward coefficient from a process control variable, a fuzzy inference part 25, the 1st and 2nd switching means 26, 27 arranged on the output sides of respective parts 23, 25 and capable of allowing the output of the operation part 23 or the inference part 25 corresponding to a selected switching means 26 or 27 to follow up the output of the inference part 23 or the operation part 25 to be the opposite side, and a switching command means 28, 32 for alternately selecting the 1st and 2nd switching means 26, 27 at an optional period, extracting the output of the operation part 23 or the inference part 25 to compensate the output of said feedback control.
Inventors:
Toshihiko Yoneoka
Application Number:
JP19471793A
Publication Date:
April 30, 2002
Filing Date:
August 05, 1993
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G05B7/02; G05B11/32; G05B13/02; (IPC1-7): G05B13/02; G05B7/02; G05B11/32
Attorney, Agent or Firm:
Hideaki Togawa
Previous Patent: DAMPER DEVICE FOR AIR CONDITIONING
Next Patent: ADJUSTING METHOD OF CHARGED BEAM LITHOGRAPHY SYSTEM
Next Patent: ADJUSTING METHOD OF CHARGED BEAM LITHOGRAPHY SYSTEM