Metso Automation Oy

Metso Field Systems Oy

Jouni Py&ouml;tsi&auml;

Pasi Heikkinen

Mika Kreivi

Harri Cederl&ouml;f

An industrial process material flow within an industrial process is controlled by a process control loop that includes a process controller, a field device controller and a field device in the process as well as process variable feedback from the process to the process controller. Both the process controller and the field device controller, such as a valve controller, are fine-tuned so that their interaction is taken into account and controller parameters, which provide an optimal control loop performance are found. This results in a significant improvement in the control loop performance, i.e., in a lower process variability, as compared with the traditional tuning method, which does not take into account the interaction between the two controllers.

Method of tuning a process control loop in an industrial process

The invention relates to field management in industrial process systems and similar systems. In the invention, maintenance management systems of industrial processes of separate plants located geographically apart from each other are networked in such a way that they may communicate with each other or with a centralized maintenance management server and transmit information on maintenance parameters of field devices of different types. As a result, experience obtained in one industrial process can be transferred to other respective industrial processes and applications. By utilizing this globally collected cumulative information, it is possible to improve and specify the diagnostics of the separate local maintenance systems (,) essentially faster than in case if the local maintenance management system were independent and the diagnostics were changed on the basis of local experience only.

Growing community of inventors

Helsinki, Finland

Jouni Pyötsiä

Growing community of inventors

Helsinki, Finland

Jouni Py&ouml;tsi&auml;

Jouni Pyötsiä