Optimal design of PID controllers using the QFT method

TL;DR

This paper introduces an optimization algorithm for designing PID controllers using Quantitative Feedback Theory (QFT), aiming to minimize open-loop gain while satisfying robustness and performance constraints, thereby automating the loop-shaping process.

Contribution

The paper presents a simple, automated optimization method for PID controller design within the QFT framework, enhancing robustness and performance in control systems.

Findings

Effective in minimizing open-loop gain

Automates the loop-shaping process

Validated with a practical example

Abstract

An optimisation algorithm is proposed for designing PID controllers, which minimises the asymptotic open-loop gain of a system, subject to appropriate robust- stability and performance QFT constraints. The algorithm is simple and can be used to automate the loop-shaping step of the QFT design procedure. The effectiveness of the method is illustrated with an example.