A Simple Robust PID Controller Design Method Based on Sine Wave Identification of the Uncertain Plant

Abstract

A Simple Robust PID Controller Design Method Based on Sine Wave Identification of the Uncertain PlantThe paper deals with the development and application of a new simple empirical approach to the design of robust PID controllers for technological processes in industrial practice. The main advantage of the proposed approach is the possibility to specify the required performance before the design algorithm implementation. Identification of characteristic data of the black-box type plant with varying parameters is carried out using the sine wave excitation signal, thus allowing to design the controller without necessarily knowing the mathematical model of the plant. The proposed approach has been verified on a real-world physical process.

Robust Decentralized PID Controller Design

“…3 comprising the system (51) and the decentralized controller (54) The decentralized controller design technique for nominal stability resulting from Corollary 4.1 enables to independently design stabilizing local controllers for individual single inputsingle output equivalent subsystems using any standard frequency-domain design method, e.g. (Bucz et al, 2010;Drahos, 2000). In the originally developed ESM version ) it was proved that local controllers tuned for a specified feasible degree-of-stability of equivalent subsystems constitute the decentralized controller guaranteeing the same www.intechopen.com degree-of-stability plant-wide.…”