Patent Document ID: 4577270
Application ID: 06658412
Patent Flag: 1

Claim One:
1. A method of controlling and optimizing the operation of a process within a plant having at least one manipulated variable and at least one controlled variable dependent on said at least one manipulated variable, said method comprising the steps of; measuring the present value of said at least one controlled variable; calculating a present presumed value of said at least one controlled variable by using a first plant model formed by a mathematical procedure which uses said measured controlled variable and system noise included within said plant as data therefor; evaluating an error corresponding to the difference between the measured value of said at least one controlled variable and said present presumed value thereof on the basis of noise included within said measured value and system noise included within said plant; calculating a future predictive value of said at least one controlled variable by using a second plant model formed by a mathematical procedure which uses said present presumed value, said evaluated error and system noise included within said plant as data therefor; correcting said first plant model in such a manner that said evaluated error becomes zero; and adjusting said at least one manipulated variable in accordance with said future predictive value and a desired value of said at least one controlled variable.