Optimization of pi controller for level control of water tank system (original) (raw)
Related papers
Design PI Controller for Tank Level in Industrial Process
Iraqi Journal for Electrical and Electronic Engineering, 2022
In today’s chemical, refinery, and petrochemical sectors, separation tanks are one of the most significant separating processes. One or more separation tanks must operate consistently and reliably for multiple facilities’ safe and efficient operation. Therefore, in this paper, a PI controller unit has been designed to improve the performance of the tank level controller of the industrial process in Basrah Refinery Station. The overall system mathematical model has been derived and simulated by MATLAB to evaluate the performance. Further, to improve the performance of the tank level controller, optimal PI parameters should be calculated, which Closed-Loop PID Autotuner has been used for this task. Several experiments have been conducted to evaluate the performance of the proposed system. The results indicated that the PI controller based on the Autotuner Method is superior to the conventional PI controller in terms of ease to implement and configuration also less time to get optimal ...
Journal of the Institute of Science and Technology, 2021
Gunumuzde su aritma sistemlerinde ve petrokimya endustrisinde siklikla kullanilan ikili tank sivi seviye sistemlerinin kontrolundeki en temel problemlerden biri iki tank arasindaki sivi akis oraninin belirlenmesidir. Bu calismada bu problemi gidermek amaciyla oransal-integral (PI) + ileri besleme (FF) kontrolcunun (PI+FF) parametreleri sezgisel optimizasyon yontemlerinden genetik algoritma (GA) kullanilarak belirlenmis ve ikili tank sistemine uygulanmistir. Ayrica GA tabanli kontrolcunun performansini gostermek amaciyla Ziegler-Nichols (Z-N) yontemi kullanilarak parametreleri elde edilen PI+FF kontrol yontemi ayni sisteme uygulanmis ve her iki kontrolcunun gercek zamanli uygulama sonuclari karsilastirilmistir. Deneysel sonuclar, parametreleri GA ile belirlen kontrolcunun Z-N yontemi kullanilarak elde edilen kontrolcuye oranla istenilen referans degere daha kucuk yerlesme zamani ve daha az yuzde asim ile ulastigi ve ayrica sistemde meydana gelen ani degisimlere daha hizli tepki verdi...
Development of PID Controller for Controlling Desired Level of Coupled Tank System
The industrial application of Coupled Tank System (CTS) are widely used especially in chemical process industries. The overall process need liquids to be pumped, stored in the tank and pumped again to another tank for certain desired level. Nevertheless, the level of liquid in tank need to be controlled and flow between two tanks must be regulated. This paper presents development of Proportional-Integral-Derivative (PID) controller for controlling the desired liquid level of the CTS. Various conventional techniques of PID tuning method will be tested in order to obtain the PID controller parameters. Simulation is conducted within MATLAB environment to verify the performances of the system in terms of Rise Time (Ts), Settling Time (Ts), Steady State Error (SSE) and Overshoot (OS). Four techniques which are trial and error method, auto-tuning method, Ziegler-Nichols (Z-N) method and Cohen-Coon (C-C) method will be implemented and all the performance results will be analyzed. It has been demonstrated that performances of CTS can be improved with appropriate technique of PID tuning methods.
Design of Centralized PI Controller for Interacting Conical Tank System
Background/Objectives: The objective of this paper is to design centralised controller for liquid level in the two interacting conical tank system. Methods/Statistical analysis: Two Centralised Proportional and Integral (PI) controller tuning method (Davison method and Tanttu and Liestehto method) are used for simulation and implemented in real time process. Findings: Centralised PI controller reduces the interaction between the two interacting conical tank and improves the system performance. The performances are compared in terms of Integral Square Error (ISE) and Peak Overshoot. It is observed that Tanttu and Liestehto method produces better response than Davison method. Applications/ Improvements: Level control in two interacting conical tank is used in chemical industries and water treatment plants.
The Effects of P, I and D Parameters in Automatic Liquid Level Control Using UniTrain Module
2013
The research discusses some experiments to control the level of liquid inside a tank by using PID controllers which can be divided into four categories. The experiments describe the effect of P, I, and D element. It also discusses the best possible controller, which is a PI controller, for the liquid level tank system. The liquid level controlling is done by adjusting the voltage pump which will further regulate the flow rate of the fluid entering the inlet valve. The liquid that flows through the outlet valve is considered as the disturbance variable to the system. The liquid tank sensor needs to be calibrated prior to the experiments. Calibration can be done manually by using a digital multimeter or by using the computer sofware that is connected directly to the plant system. Set point and PID parameters are determined by the UniTrain and the computer interface. In these experiments, PI controller has the best result with a medium proportional gain (KP = 5) and a small integral ga...
Level Control of Tank System Using PID Controller-A Review
This paper discusses the review of level control of tank system using PID controller. PID controller use for one or more tank system. PID has fast response. Paper present different methods of level control. Eliminate the steady state error. It is most common way of solving problems of practical control systems.
Optimal PID controller design for level control of three tank system
International Journal of Advanced Technology and Engineering Exploration
The PID controller is still very much popular in industry because of its simplicity and reliability. Many methods have been proposed in the literature for tuning of parameters of PID controller. One of these methods is Ziegler-Nichols (ZN) settings which is a rule based design criterion [1]. Some other rule based methods are integral of square time weighted error (ISTE), Pessen integral of absolute error (PIAE), Kessler Landau Voda (KLV), some overshoot rule (SO-OV), no overshoot rule (NO-OV), Mantz-Tacconi Ziegler-Nichols (MT-ZN) and refined Ziegler-Nichols (R-ZN) [2].The rule based tuning methods generally provide satisfactory response. The demand of improved dynamic response evolved the various evolutionary computation based tuning techniques. Some of these include Luus-Jaakola optimization procedure for PID controller tuning [3], PID controller tuning based on particle swarm optimization [4], evolutionary computation based PID tuning [5], PID controller tuning based on genetic algorithm [6], PID tuning using soft computing techniques [7], etc. This paper proposes an evolutionary computation based tuning method. The teacher learner based optimization (TLBO) technique is used for obtaining the controller parameters. Being simple and efficient, TLBO is applied for obtaining optimal results for various engineering problems [8-11].
INTERFACING AND PID CONTROL OF LIQUID LEVEL IN A TANK USING MATLAB
This paper discusses about control of liquid level in a tank which has an external Yokogawa PID controller UT32A and supports serial communication using RS485 protocol with the PC. The present MODBUS RTU communication via Intouch graphical interface is imitated by opencontrolmodbus serial OPC server and MATLAB (as client). Also, the UT32A controller is replaced by a soft coded PID controller in MATLAB. The open loop curve figures and the PID parameters that are calculated are shown in results which can be further used for fault detection and diagnosis.
Assessment of Diverse Controllers for A Cylindrical Tank Level Process
This manuscript deals with the proposal of the controller for a Level process. In this cram the level process is controlled by PID controller using diverse control methods such as IMC, MPC and the result of assorted control algorithms has been compared in terms of time domain specifications like settling time (ts) , rise time (tr), maximum overshoot (Mp) and performance indices like ISE, IAE, ITAE, MSE. The conventional PID controller has a shortcoming that, it makes a counteractive exploit only after the error has developed but not in progress whereas MPC endow with a corrective exploit in advance. The intention of this cram is to scrutinize the MPC strategy, analyse and contrast the control upshot with conventional control stratagem in maintaining a water level system. The concert of the conventional controller, IMC and MPC has been compared in which MPC controller gives a enhanced system performance in terms of settling time (ts) , rise time (tr), maximum overshoot (Mp) and performance indices akin to ISE, IAE, ITAE, MSE.
Performance Analysis of a Nonlinear Coupled-Tank System Using PI Controller
Universal Journal of Control and Automation, 2017
In the process industry many of the control applications deal with liquid level, flow, temperature and pressure processes. This paper presents the approach of modeling and controller design of liquid level control system for a nonlinear Coupled-Tank System. First of all, the mathematical equations for the nonlinear system are explored. And then, proportional plus integral (PI) controller is designed to control the level of the second tank for the nonlinear model, through variable manipulation of water pump in the first tank. The simulation study is done using MATLAB and the performance analysis in time domain of the controller is identified. In addition, ITAE criterion is used to evaluate the controller performance. Finally, the simulation results indicate that the controller work very well and the proposed controller has the ability to reject the effect of the disturbance.