Modelling and Control of Liquid Level System

Control system modelling is difficult and delicate process. In most cases, the model cannot be obtained directly from the plant due to the complexity of the system components or the internal structure of the system is not sufficiently understood to allow analytical formulation of equations. On the o...

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Main Author:	Yaacob, Marizan
Format:	Thesis
Language:	English English
Published:	2001
Subjects:	Liquid level system
Online Access:	http://psasir.upm.edu.my/id/eprint/10739/1/FK_2001_4.pdf
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id	my-upm-ir.10739
record_format	uketd_dc
spelling	my-upm-ir.107392024-05-13T08:59:02Z Modelling and Control of Liquid Level System 2001-10 Yaacob, Marizan Control system modelling is difficult and delicate process. In most cases, the model cannot be obtained directly from the plant due to the complexity of the system components or the internal structure of the system is not sufficiently understood to allow analytical formulation of equations. On the other hand, the model can be proposed by investigating the dynamic characteristics of the system experimentally. In this study, a model of a liquid level system is to be derived. The experimental data was obtained by applying a step input and measuring the output response of the system. A transfer function was estimated by using curve fitting technique. This estimated model has been refined by tuning the parameters e.g. gain, time constant, natural frequency and damping ratio. Control design has also been carried out based on the model obtained through simulation. PD control has found to be superior compared to PID. The same parameter settings of the controllers was applied to the real plant and performance of the system under PD control was satisfactory. This also proved that the model derived was a good estimate of the real plant and it can be used for further control design. Liquid level system 2001-10 Thesis http://psasir.upm.edu.my/id/eprint/10739/ http://psasir.upm.edu.my/id/eprint/10739/1/FK_2001_4.pdf text en public masters Universiti Putra Malaysia Liquid level system Faculty of Engineering Mohd Noor, Samsul Bahari English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Mohd Noor, Samsul Bahari
topic	Liquid level system
spellingShingle	Liquid level system Yaacob, Marizan Modelling and Control of Liquid Level System
description	Control system modelling is difficult and delicate process. In most cases, the model cannot be obtained directly from the plant due to the complexity of the system components or the internal structure of the system is not sufficiently understood to allow analytical formulation of equations. On the other hand, the model can be proposed by investigating the dynamic characteristics of the system experimentally. In this study, a model of a liquid level system is to be derived. The experimental data was obtained by applying a step input and measuring the output response of the system. A transfer function was estimated by using curve fitting technique. This estimated model has been refined by tuning the parameters e.g. gain, time constant, natural frequency and damping ratio. Control design has also been carried out based on the model obtained through simulation. PD control has found to be superior compared to PID. The same parameter settings of the controllers was applied to the real plant and performance of the system under PD control was satisfactory. This also proved that the model derived was a good estimate of the real plant and it can be used for further control design.
format	Thesis
qualification_level	Master's degree
author	Yaacob, Marizan
author_facet	Yaacob, Marizan
author_sort	Yaacob, Marizan
title	Modelling and Control of Liquid Level System
title_short	Modelling and Control of Liquid Level System
title_full	Modelling and Control of Liquid Level System
title_fullStr	Modelling and Control of Liquid Level System
title_full_unstemmed	Modelling and Control of Liquid Level System
title_sort	modelling and control of liquid level system
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Engineering
publishDate	2001
url	http://psasir.upm.edu.my/id/eprint/10739/1/FK_2001_4.pdf
_version_	1804888597646540800

Modelling and Control of Liquid Level System

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