The application of random test signals in process optimization

Summary In the determination and continuous adaptation of the optimum settings of a continuous process the influence of disturbances and dynamic effects can be ruled out by using random test signals superposed on the adjustable parameters. In some cases use may be made of signals that are inherent in the process; in others it is necessary to superpose specially generated signals. The two methods are compared as regards possibilities of application, need of apparatus, and results.