Practical verification of active disturbance rejection controller for the pneumatic setup

In this paper, the practical verification of Active Disturbance Rejection Controller (ADRC) implementation for pneumatic setup is investigated. Apart from experimental results, the inverse half-rule is suggested to support ADRC tuning for the second order processes by adjusting the value of the scaling factor. This rule is based only on the approximation of the process step response by First Order plus Dead Time (FOPDT) model. The results show the practical applicability of the suggested tuning method and the superiority of ADRC control performance over the conventional PI controller.