Abstract:The purpose of this paper is to present the development and evaluation of a novel PID autotuner. Based on prior art results, the algorithm uses the location of the critical point and the value of the critical frequency of the process to impose a user specified robustness on the closed loop. It is shown that the method is easy to apply with few choices left for the user. Nevertheless it is quite successful on systems which are relevant from process engineering point of view.

The aim of this paper is to present the validation of a simple relay-based PID autotuner with user-specified modulus margin. The testing is made on relevant benchmark systems proposed for evaluating PID controller design methods. Based on prior art results, the performance of the autotuner is then compared to other PID controllers from literature.