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A new approach to closed loop autotuning for PID controllers

Rongfu Luo, S. Joe Qin, Dapang Chen

Open publisher page 18 citations

Abstract

A simple method for the autotuning of PID controllers which keeps the PID controllers in closed loop is proposed. A limit circle is generated through setpoint relay to extract relevant information about the process dynamics. Ziegler-Nichols tuning formulas based on the reaction curve method and the ultimate gain and ultimate period method are used to calculate the PID parameters. Extensive simulations have shown that the proposed method is accurate and needs not to switch off the existing controller.

About this research paper

What this paper is about

A simple method for the autotuning of PID controllers which keeps the PID controllers in closed loop is proposed. A limit circle is generated through setpoint relay to extract relevant information about the process dynamics. Ziegler-Nichols tuning formulas based on the reaction curve method and the ultimate gain and ultimate period method are used to calculate the PID parameters. Extensive simulations have shown that the proposed method is accurate and needs not to switch off the existing controller.

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OpenAlex reports 18 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Method / approach

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Available abstract

A simple method for the autotuning of PID controllers which keeps the PID controllers in closed loop is proposed. A limit circle is generated through setpoint relay to extract relevant information about the process dynamics. Ziegler-Nichols tuning formulas based on the reaction curve method and the ultimate gain and ultimate period method are used to calculate the PID parameters. Extensive simulations have shown that the proposed method is accurate and needs not to switch off the existing controller.

Key concepts: PID controller, Control theory (sociology), Computer science, Loop (graph theory), Closed loop, Control engineering, Control (management), Engineering

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