Title:
METHOD FOR CONTROLLING PREDICTION OF QUALITATIVE INFERENCE
Document Type and Number:
Japanese Patent JPH05303406
Kind Code:
A
Abstract:
PURPOSE:To make it possible to follow up a sudden change in a controlled system without generating a delay by modeling a control system by qualitative inference and evaluating the control system by qualitative evaluation scale expressed by a membership function based upon the prediction of the model. CONSTITUTION:A controller 1500 is constituted of a qualitative inference predicting model 1501 to be a predictive model for a controlled object, a qualitative evaluation value calculating part 1502 for qualitatively evaluating the degree of satisfaction of each evaluation item in accordance with a predicted result, an optimum control plan selecting part 1504 for selecting a control output having the highest evaluation value from calculated evaluation values, and a control plan group 1503 for storing the combinations of available control plans. The model 1501 inputs a measured value from a controlled process 1505 and convert the input value to a fuzzy value to use it. In each control period, the group 1503 selects all cases for the available control plans, executes prediction based upon qualitative inference and calculates the evaluation value of a predicted result.
Inventors:
TADOKORO HIDEYUKI
KOBARI MASANORI
YODA MIKIO
KIZAWA HITOSHI
KOBARI MASANORI
YODA MIKIO
KIZAWA HITOSHI
Application Number:
JP10953192A
Publication Date:
November 16, 1993
Filing Date:
April 28, 1992
Export Citation:
Assignee:
HITACHI LTD
HITACHI ENG CO LTD
HITACHI ENG CO LTD
International Classes:
G05B13/02; G01W1/00; G01W1/10; G05B13/04; G05D9/12; (IPC1-7): G05B13/02; G05B13/04; G05D9/12
Attorney, Agent or Firm:
Ogawa Katsuo
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