A study on the accuracy in the identification of a pneumatic servo system

摘要

This paper is concerned with an experimental study on the identification of a pneumatic servo system. We first describe a phenomenon we face in the experiment, which is supposed to be due to some non-ideal characteristics of the servo valve. Then, we propose a method for the parameter identification to compensate the effect of that phenomenon. We then examine how small the amplitude of the identification input can be made to avoid possible damage on the plant to he identified.