Process controller

Abstract

Abstract PURPOSE:To obtain a process controller which is optimum to both the follow-up of the target value and the suppression of disturbance which can be controlled independently with each other, by using an arithmetic means which compensates the control constant set to the target value follow-up optimum characteristics. CONSTITUTION:A control arithmetic part 11 compensates the control constant set in an optimum state for suppression of disturbance by means of parameters alphaand gamma obtains a control constant set in an optimum state for follow-up of target value. However the gain is reduced to the variation of the controlled valuable PV due to the disturbance together with a delayed set time with said control constant set in the optimum state for follow-up of the target value. In this respect, a compensation arithmetic part 10 gives a compensating operation to the control constant in an optimum state for suppression of disturbance and supplies the constant to the part 11. Thus it is possible to obtain a process controller which is optimum to both the follow-up to the target value and the suppression of disturbance which can be controlled independently of each other.

Inventors

• 👤 Kazuo Hiroi
• 👤 広井　和男

Bibliographic Details