초록 ▼

A method for controlling and optimizing the operation of a series of interdependent processes in a plant environment. Manipulation of one or more constrained process input variables is used to achieve feedforward/feedback control of one or more process output variables. In the synthesis of the metho

A method for controlling and optimizing the operation of a series of interdependent processes in a plant environment. Manipulation of one or more constrained process input variables is used to achieve feedforward/feedback control of one or more process output variables. In the synthesis of the method of controlling and optimizing, input variables are subjected to measured perturbations and the dynamic effects on the outputs are noted for prediction of the future response of the processes during on-line operation. Time variant and time invariant constraints on system operation are incorporated to allow optimum operation of the interdependent processes.

대표청구항 ▼

A method of controlling and optimizing the operation of a process having a plurality of independently controlled, manipulated variables and at least one controlled variable dependent on said manipulated variables, said method comprising the steps of: introducing test disturbances in said manipulated

A method of controlling and optimizing the operation of a process having a plurality of independently controlled, manipulated variables and at least one controlled variable dependent on said manipulated variables, said method comprising the steps of: introducing test disturbances in said manipulated variables and measuring the effect of the disturbances on said controlled variable; calculating at discrete intervals of time from said introducing and measuring the magnitude of response of said controlled variable to a given change in one of said manipulated variables; measuring the present values of said manipulated variables and said controlled variable; using said calculated magnitude of response to calculate for discrete intervals of time a new set of moves for said manipulated variables for obtaining new values and for moving said controlled variable toward its optimum setpoint; and adjusting said manipulated variables in accordance with said new set of moves to reach said new values.