A simple tuning method for a class of feedforward controllers utilizing PID

We consider a tuning problem for a class of feedforward controllers for a given closed-loop system with an unknown plant by only using of the input and output measurements. The feedforward controllers which should be tuned are implemented as a unity feedback system of a conventional PID controller. Hence, the feedforward controller is just tuned by the PID parameters which is implemented in the controller. In this paper, we propose a direct method to obtain a suitable PID parameter to produce a desired response based on a data matching approach.