초록 ▼

A non-linear process controller drives a process variable to be substantially equivalent to a set point based on the expected load disturbances within the process and on a measurement of the actual magnitude of set point changes. The controller uses control parameters developed in an optimal manner

A non-linear process controller drives a process variable to be substantially equivalent to a set point based on the expected load disturbances within the process and on a measurement of the actual magnitude of set point changes. The controller uses control parameters developed in an optimal manner to control the process in response to expected load disturbances when no set point change has occurred. Whenever a set point change is detected, the controller derives a set of set point change control parameters and uses these set point change control parameters in responding to the set point change. Each of the set point change control parameters may be developed as a function of the magnitude of the actual change in the set point and according to a set of process characteristics which may include the time delay and the dominant time constant of the process.

대표청구항 ▼

[ We claim:] [35.] A method of controlling a process in response to a change in a set point and in response to a process characteristic, comprising the steps of:measuring the magnitude of the change in the set point;developing a set of control parameters in response to the process characteristic and

[ We claim:] [35.] A method of controlling a process in response to a change in a set point and in response to a process characteristic, comprising the steps of:measuring the magnitude of the change in the set point;developing a set of control parameters in response to the process characteristic and the measured magnitude of the change in the set point; andcontrolling the process in accordance with a fuzzy logic control technique using the set of control parameters when the set point change has occurred.