An Application of the Modified PID Control System for Heat Flow Experiment
Takaaki Hagiwara, Kou Yamada, Iwanori Murakami,
Yoshinori Ando, Shun Matsuura, and Satoshi Aoyama
Department of Mechanical System Engineering, Gunma University, 1-5-1 Tenjincho, Kiryu, Gunma 376-8515, Japan
The Proportional-Integral-Derivative (PID) controller structure is the most widely used in industrial applications thanks to its structural simplicity and applicability in solving practical control problems. It is not, however, almighty. Yamada and Hagiwara proposed design modified PID controllers to make control for any plant stable and make admissible sets of P, I, and D parameters mutually independent. Applying modified PID control to practical plants requires that the influence of disturbance in the plant be considered. In many cases, this disturbance is unknown, making it difficulty to attenuate. Although designs have been proposed for modified PID control to attenuate unknown disturbances, little has been done in examining the attenuation of unknown disturbances. We demonstrate the effectiveness of modified PID control in attenuating unknown disturbances for temperature control in heat flow experiments.
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