scholarly journals Relay Identification Using Shifting Method for PID Controller Tuning

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5945
Author(s):  
Milan Hofreiter
Keyword(s):  
Pid Controller ◽  
Open Loop ◽  
Model Parameters ◽  
Parameter Setting ◽  
Relay Feedback ◽  
Controller Tuning ◽  
Single Experiment ◽  
Transport Delay ◽  
Pid Controller Tuning ◽  
Model Transfer

The aim of this study was to present a relay shifting method for relay feedback identification of dynamical systems suitable for PID controller tuning. The proposed technique uses a biased relay to determine frequency response points from a single experiment without any assumptions about a model transfer function. The method is applicable for open-loop stable, unstable, and integration processes, even with a delay, and regardless of whether they are oscillating or non-oscillating. The core of this technique was formed by the so-called relay shifting filter. In this study, the method was applied to a parameter estimation of a second-order time-delayed (SOTD) model that can describe, with acceptable accuracy, the dynamics of most processes (even with a transport delay) near the operating point. Simultaneously, a parameter setting for the PID controller was derived based on the model parameters. The applicability of the proposed method was demonstrated on various simulated processes and tested on real laboratory apparatuses.

On-line PID controller tuning for open-loop unstable processes

2000 ◽  
Vol 33 (20) ◽  
pp. 25-32
Author(s):  
K.G. Arvanitis ◽  
N.A. Sigrimis ◽  
G.D. Pasgianos ◽  
G. Kalogeropoulos
Keyword(s):  
Pid Controller ◽  
Open Loop ◽  
Controller Tuning ◽  
Pid Controller Tuning ◽  
On Line ◽  
Unstable Processes

A Fractional Calculus Perspective of PID Tuning

2003 ◽  
Author(s):  
Ramiro S. Barbosa ◽  
J. A. Tenreiro Machado ◽  
Isabel M. Ferreira
Keyword(s):  
Transfer Function ◽  
Fractional Calculus ◽  
Fractional Order ◽  
Pid Controller ◽  
Open Loop ◽  
Controller Tuning ◽  
Pid Tuning ◽  
Loop Transfer Function ◽  
Pid Controller Tuning ◽  
Fractional Order Integrator

This paper gives an interpretation of the classical PID controller tuning based on the fractional calculus theory. The PID parameters are calculated according with the specifications of an elementary system whose open-loop transfer function is a fractional order integrator (FOI). The performances of the two systems are compared and illustrated through the frequency and time responses.

scholarly journals Setpoint weighted PID controller tuning for unstable system using heuristic algorithm

2012 ◽  
Vol 22 (4) ◽  
pp. 481-505 ◽  
Author(s):  
V. Rajinikanth ◽  
K. Latha
Keyword(s):  
Disturbance Rejection ◽  
Pid Controller ◽  
Heuristic Algorithms ◽  
Open Loop ◽  
Bacterial Foraging Optimization ◽  
Controller Tuning ◽  
Unstable Systems ◽  
Reference Tracking ◽  
Pid Controller Tuning ◽  
Two Degree Of Freedom

Most of the real time chemical process loops are unstable in nature and designing a suitable controller for such systems are difficult than open loop stable processes. In this work, an attempt is made with a two degree of freedom setpoint weighted PID controller tuning procedure for a class of unstable systems using the recent heuristic algorithms such as Particle Swarm Optimization and Bacterial Foraging Optimization. The problem considered in this study is to aptly tune the controller in order to enhance the overall closed loop performance. A novel objective function proposed in this study is used to monitor the heuristic algorithms in order to get the optimal controller parameters like Kp, Ki, Kd, and α with minimized iteration number. The proposed method is validated with a simulation study and this helps to accomplish enhanced system performance such as smooth reference tracking, satisfactory disturbance rejection, and error minimization for a class of unstable systems

PID CONTROLLER TUNING USING ANT COLONY METHOD FOR SERVO HYDRAULIC SYSTEM

2019 ◽  
Vol 42 (4) ◽  
pp. 148-152
Author(s):  
Shaymaa Mahmood Mahdi ◽  
Karam Samir Khalid ◽  
Shakir Mahmood Mahdi
Keyword(s):  
Hydraulic System ◽  
Pid Controller ◽  
Ant Colony ◽  
Controller Tuning ◽  
Pid Controller Tuning

scholarly journals Switchable PID Controller Tuning Based on Golden Section Reduction Rule

2020 ◽  
Vol 53 (2) ◽  
pp. 11068-11073
Author(s):  
Jingao Sun ◽  
Guanghao Su ◽  
Xianfeng Chen ◽  
Wen Yang
Keyword(s):  
Pid Controller ◽  
Golden Section ◽  
Reduction Rule ◽  
Controller Tuning ◽  
Pid Controller Tuning
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