scholarly journals Comparison of closed loop performance of consistency process dynamics for various PID controller algorithms

2021 ◽  
Vol 2070 (1) ◽  
pp. 012113
Author(s):  
Pradeep Kumar Juneja ◽  
Sandeep Kumar Sunori ◽  
Abhinav Sharma ◽  
Anshu Sharma ◽  
Prabhat Kumar ◽  
...  
Keyword(s):  
Pid Controller ◽  
Closed Loop ◽  
Dead Time ◽  
Paper Machine ◽  
Proportional Integral Derivative ◽  
Time Dynamics ◽  
First Order ◽  
Paper Making ◽  
Process Dynamics ◽  
Derivative Filter

Abstract In this work, various algorithms of PID (Proportional-Integral-Derivative) controllers such as series, parallel, series together with derivative filter and parallel together with derivative filter form are implemented for the comparative analysis of the closed loop responses of an important parameter in head box of a paper machine in a paper making process industry called consistency, which has FOPDT (First Order Plus Dead Time) dynamics. Also the comparison is made between the closed loop responses achieved from different values of derivative filter factor for non-ideal situations. The steady state and dynamic characteristics are analyzed and compared and important inferences are derived.

scholarly journals PID control of FOPDT plants with dominant dead time based on the modulus optimum criterion

2016 ◽  
Vol 26 (1) ◽  
pp. 5-17 ◽  
Author(s):  
Jan Cvejn
Keyword(s):  
Linear Systems ◽  
Pid Control ◽  
Pid Controller ◽  
Closed Loop ◽  
Dead Time ◽  
Stability Margin ◽  
Analytical Design ◽  
First Order ◽  
The Stability

The modulus optimum (MO) criterion can be used for analytical design of the PID controller for linear systems with dominant dead time. However, although the method usually gives fast and non-oscillating closed-loop responses, in the case of large dead time the stability margin gets reduced and even non-stable behavior can be observed. In this case a correction of the settings is needed to preserve the stability margin. We describe and compare two methods of design of the PID controller based on the MO criterion that for the stable first-order systems with dead time preserve the stability margin, trying to keep maximum of the performance of the original MO settings.

scholarly journals Design of fractional order controllers using constrained optimization and reference tracking method

2020 ◽  
Vol 11 (1) ◽  
pp. 291
Author(s):  
Manoj D Patil ◽  
K. Vadirajacharya ◽  
Swapnil Khubalkar
Keyword(s):  
Fractional Order ◽  
Pid Controller ◽  
Dead Time ◽  
Proportional Integral Derivative ◽  
Reference Tracking ◽  
Tracking Method ◽  
Proportional Integral ◽  
First Order ◽  
Control Community ◽  
Online Tuning

In recent times, fractional order controllers are gaining more interest. There are several fractional order controllers are available in literature. Still, tuning of these controllers is one of the main issues which the control community is facing. In this paper, online tuning of five dierent fractional order controllers is discussed viz. tilted proportional-integral-derivative (T-PID) controller, fractional order proportional-integral (FO-PI) controller, fractional order proportional-derivative (FO-PD) controller, fractional order proportional-integral-derivative (FO-PID) controller. A reference tracking method is proposed for tuning of fractional order controllers. First order with dead time (FOWDT) system is used to check feasibility of the control strategy.

scholarly journals Analytical Tuning Method of MPC Controllers for MIMO First-Order Plus Fractional Dead Time Systems

Processes ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 212
Author(s):  
Ning He ◽  
Yichun Jiang ◽  
Lile He
Keyword(s):  
Predictive Control ◽  
Closed Loop ◽  
Dead Time ◽  
Pole Placement ◽  
Closed Loop System ◽  
Placement Problem ◽  
First Order ◽  
Tuning Method ◽  
Domain Performance ◽  
Time Systems

An analytical model predictive control (MPC) tuning method for multivariable first-order plus fractional dead time systems is presented in this paper. First, the decoupling condition of the closed-loop system is derived, based on which the considered multivariable MPC tuning problem is simplified to a pole placement problem. Given such a simplification, an analytical tuning method guaranteeing the closed-loop stability as well as pre-specified time-domain performance is developed. Finally, simulation examples are provided to show the effectiveness of the proposed method.

scholarly journals Adaptive digital PID control of first-order-lag-plus-dead-time dynamics with sensor, actuator, and feedback nonlinearities

2019 ◽  
Vol 1 (1) ◽  
pp. e20 ◽  
Author(s):  
Mohammadreza Kamaldar ◽  
Syed Aseem Ul Islam ◽  
Sneha Sanjeevini ◽  
Ankit Goel ◽  
Jesse B. Hoagg ◽  
...  
Keyword(s):  
Pid Control ◽  
Dead Time ◽  
Time Dynamics ◽  
First Order ◽  
Sensor Actuator ◽  
Digital Pid ◽  
Digital Pid Control

An Intelligent Controller Design Approach for MIMO Coupled Tank System

2018 ◽  
Vol 7 (1) ◽  
pp. 8
Author(s):  
Mohd Hafiz Jali ◽  
Ahmad Firdaus Azhar ◽  
Rozaimi Ghazali ◽  
Chong Chee Soon
Keyword(s):  
Pid Controller ◽  
Closed Loop ◽  
Fuzzy Logic Controller ◽  
Controller Design ◽  
Proportional Integral Derivative ◽  
Cross Sectional ◽  
Intelligent Controller ◽  
Pump Flow Rate ◽  
Tank System ◽  
Better Than

Nowadays, versatilities of controllers have been developed to control the Coupled Tank System (CTS) such as proportional, integral, derivative (PID), fuzzy, fuzzy PID and neuro network. This paper focused on the control of the pump flow rate, in and out of the tank against the cross-sectional area of the CTS’s tank. The main objective of this paper is to design a CTS by using MATLAB since the Fuzzy Logic Controller (FLC) is widely utilized in the control of engineering applications in the industrial. Therefore, the FLC will be utilized to control and improve the performance of the CTS. The conventional PID controller will be applied, which reacts as a benchmark in the performance of the FLC. Parameters such as steady state error, settling time, and maximum overshoot will be part of the simulation results. As a result of the dynamic response executed in the closed-loop environment, it can be concluded that the FLC is capable of performing better than the conventional PID controller.

scholarly journals Sigmoid PID based adaptive safe experimentation dynamics algorithm of portable duodopa pump for Parkinson’s disease patients

2021 ◽  
Vol 10 (2) ◽  
pp. 632-639
Author(s):  
Najwa Hidayah Abdul Razak Ramesh ◽  
Mohd Riduwan Ghazali ◽  
Mohd Ashraf Ahmad
Keyword(s):  
Blood Plasma ◽  
Cost Function ◽  
Pid Controller ◽  
Closed Loop ◽  
Proportional Integral Derivative ◽  
Drug Infusion ◽  
Loop Control ◽  
Wearing Off ◽  
The Cost ◽  
Control Accuracy

This paper emphasizes on the development of an appropriate closed-loop control strategy for traditional portable duodopa pump (PDP); thereby ensuring an automated drug infusion without wearing off. In particular, a sigmoid proportional integral derivative (SPID) controller is adopted to control the blood plasma level of dopamine. The parameters of SPID controller are tuned using the adaptive safe experimentation dynamics (ASED) algorithm. The efficiency of the suggested SPID-ASED is evaluated by concerning the convergence plot of the cost function, the amount of dopamine in the blood plasma (BP) of the patient, the statistical analysis of cost function, norm of error and norm of input, and time responses specifications. The simulation results show that the proposed SPID-ASED outperforms the standard PID controller in terms of better control accuracy with minimum overshoot and settling time.

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