Analysis and Pilot Scale Testing of a Class of Process Control Algorithms with Variable Parameters

Abstract Industrial processes are usually controlled by means of controllers with constant tuning parameters. Such controllers pay no attention to disturbances or changes in process variables. The paper analyses such processes and models and derives time-varying controllers, which automatically remove effects caused by the time-varying parameters of the process. The algorithms have been tested in a pilot plant using a commercial control software implemented in PC. The test results are described and the performance of the controllers is demonstrated and compared to theoretical results.