Title:
DIGITAL CONTROL SYSTEM
Document Type and Number:
Japanese Patent JPS6170605
Kind Code:
A
Abstract:
PURPOSE:To determine a control command matching with the purpose of control while evaluating the degree of attainment of the purpose according to the condition by estimating the current or future quantity of state when several predetermined control commands are outputted at the current time or a specific time later from the input to and the quantity of state of a controlled system. CONSTITUTION:A control command storage device 1 is stored with K past control commands U=(utI1-utIk) and an observation quantity storage device 2 is stored with J past state observation quantities Y=(htO1-ytOj). Then, arithme tic ai=f(Y,Yui) is performed by a predicting device 3 for an evaluation index A (e.g., speed after five seconds) corresponding to one control purpose of the controlled system on the basis of the past control command U, state observation quantity Y, and control command ui that a fuzzy control rule evaluating device 7 is to evaluate to obtain a forecasted value (s) of the evaluation index A. Similarly,a predicting device 4 for an evaluation index B calculates a predicted value bi of the evaluation index B from bi=g(Y,Y,ui).
Inventors:
YASUNOBU SEIJI
MIYAMOTO SHOJI
MIYAMOTO SHOJI
Application Number:
JP19154684A
Publication Date:
April 11, 1986
Filing Date:
September 14, 1984
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G05B13/00; G05B13/02; G05B13/04; (IPC1-7): G05B13/00
Attorney, Agent or Firm:
Katsuo Ogawa (1 person outside)