Block Method for SolvingState-Space Equations of Linear Continuous-Time Control Systems

Raghad Kadhim  Salih; Shymaa Hussain  Salih; Atheer Jawad Kadhim

doi:10.21123/bsj.2007.4.2.318-329

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Publication Date

Wed Mar 10 2021

Journal Name

Baghdad Science Journal

Volume

4

Issue Number

2

DOI

10.21123/bsj.2007.4.2.318-329

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Block Method for SolvingState-Space Equations of Linear Continuous-Time Control Systems

"State-space equation

Block method

Control system and Algorithms "

Raghad Kadhim Salih

Shymaa Hussain Salih

Atheer Jawad Kadhim

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This paper presents a newly developed method with new algorithms to find the numerical solution of nth-order state-space equations (SSE) of linear continuous-time control system by using block method. The algorithms have been written in Matlab language. The state-space equation is the modern representation to the analysis of continuous-time system. It was treated numerically to the single-input-single-output (SISO) systems as well as multiple-input-multiple-output (MIMO) systems by using fourth-order-six-steps block method. We show that it is possible to find the output values of the state-space method using block method. Comparison between the numerical and exact results has been given for some numerical examples for solving different types of state-space equations using block method for conciliated the accuracy of the results of this method.

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Publication Date

Thu Apr 27 2017

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

On A Bitopological (1,2)*- Proper Functions

(1

2)*-proper functions

(1

2)*-perfect functions

(1

2)*-compact functions

(1

2)*-cluster points

(1

2)*- 2 T -spaces

(1

2)*-compactly closed sets and (1

2)*-K-spaces .

Sabiha I .

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In this paper, we introduce a new type of functions in bitopological spaces, namely, (1,2)*-proper functions. Also, we study the basic properties and characterizations of these functions . One of the most important of equivalent definitions to the (1,2)*-proper functions is given by using (1,2)*-cluster points of filters . Moreover we define and study (1,2)*-perfect functions and (1,2)*-compact functions in bitopological spaces and we study the relation between (1,2)*-proper functions and each of (1,2)*-closed functions , (1,2)*-perfect functions and (1,2)*-compact functions and we give an example when the converse may not be true .

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Publication Date

Wed Oct 06 2021

Journal Name

College Of Islamic Sciences

Linguistic deposits in the Arabic language

Key words: - Terminology for subject of the study: rooting and etymology - The nature of linguistic residues - Examples of destroyed sediment in the Arabic language

اية علي

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Abstract of the research:

This research sheds light on an important phenomenon in our Arabic language, which is linguistic sediments, and by which we mean a group of vocabulary that falls out of use and that native speakers no longer use it, and at the same time it happens that few individuals preserve the phenomenon and use it in their lives, and it is one of the most important phenomena that It should be undertaken and studied by researchers; Because it is at the heart of our huge linguistic heritage, as colloquial Arabic dialects retain a lot of linguistic sediments, and we usually find them at all levels of language: phonetic, banking, grammatical and semantic. In the

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Publication Date

Sun Jan 01 2023

Journal Name

International Conference Of Computational Methods In Sciences And Engineering Iccmse 2021

Fibrewise slightly topological spaces

fibrewise slightly closed topological spaces

fibrewise slightly open topological spaces

fibrewise slightly locally sliceable and fibrewise locally slightly sectionable topological spaces.

Mohammed G.

Y. Y.

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Publication Date

Wed Nov 01 2017

Journal Name

Al-nahrain Journal Of Science (anjs)

Fibrewise Pairwise Bi-Topological Spaces

Fibrewise bitopological spaces

Fibrewise pairwise - spaces

fibrewise pairwise -Hausdorff spaces

Fibrewise pairwise -regular spaces and fibrewise pairwise -normal spaces.

Y. Y.

L. A.

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The main idea of this research is to consider fibrewise pairwise versions of the more important separation axioms of ordinary bitopology named fibrewise pairwise - spaces, fibrewise pairwise - spaces, fibrewise pairwise - spaces, fibrewise pairwise -Hausdorff spaces, fibrewise pairwise functionally -Hausdorff spaces, fibrewise pairwise -regular spaces, fibrewise pairwise completely -regular spaces, fibrewise pairwise -normal spaces and fibrewise pairwise functionally -normal spaces. In addition we offer some results concerning it.

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Publication Date

Sun Aug 01 2021

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

Some Games in áº›- PRE- g- separation axioms

áº›â€preâ€gâ€open set

áº›â€preâ€gâ€open function

áº›â€preâ€gâ€cotinuous function

áº›â€preâ€gâ€separation axioms and game

Esmaeel R.

Ahmed A.

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The primary purpose of this subject is to define new games in ideal spaces via set. The relationships between games that provided and the winning and losing strategy for any player were elucidated.

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Publication Date

Sat Oct 01 2022

Journal Name

University Of Baghdad, College Of Education For Pure Sciences / Ibn Al-haitham, Department Of Mathematics

On Fibrewise Fuzzy Topological Spaces

fibrewise j-closed fuzzy topological spaces

fibrewise j-open fuzzy topological spaces

fibrewise locally sliceable fuzzy j-topological spaces and fibrewise locally sectionable fuzzy j-topological spaces.

M. A.

Y. Y.

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The aim of this research is to study some types of fibrewise fuzzy topological spaces. The six major goals are explored in this thesis. The very first goal, introduce and study the notions types of fibrewise topological spaces, namely fibrewise fuzzy j-topological spaces, Also, we introduce the concepts of fibrewise j-closed fuzzy topological spaces, fibrewise j-open fuzzy topological spaces, fibrewise locally sliceable fuzzy j-topological spaces and fibrewise locally sectionable fuzzy j-topological spaces. Furthermore, we state and prove several Theorems concerning these concepts, where j={δ,θ,α,p,s,b,β} The second goal is to introduce weak and strong forms of fibrewise fuzzy ω-topological spaces, namely the fibrewise fuz

Publication Date

Sat Oct 01 2016

Journal Name

Journal Of Theoretical And Applied Information Technology

Factors affecting global virtual teams’ performance in software projects

Today the trend is to perform software development work via distributed geographical area among team

individual or even as an organization. However

due to the global market and international presence of many companies

there is a need to implement a global virtual teams. The global virtual team members are gradually engaged in globalized business environments across space

time and organizational boundaries via information and communication technologies. A global virtual team relies on communication

collaboration

and information exchange are the most important criteria in global virtual teams’ operations. The purpose of this paper is to answer two research questions. The first research question is to identify the factors affecting global virtual teams’ performance. A systematic literature review was conducted to answer the first research question. The second research question is on what the rank of the factor affecting the global virtual teams’ performance according to their level of effect on global virtual teams’ performance. Online survey was conducted within 103 developers and IT managers from eight IT companies to answer the second research question. The Statistical Package for Social Science (SPSS 22) was used to analyze the collected data. In this study

we investigated factors that affect global virtual teams’ performance

factors considered include cultural differences

language problems

time-zone differences

team size

technical problems

lack of trust

lack of sufficient training

and ICT problems. Also the findings indicated that lack of sufficient training is the highest level of effect on global virtual teams’ performance. On the other hand

Ali Yahya Gheni

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(23)

Publication Date

Fri Jan 01 2016

Journal Name

Journal Of The College Of Languages (jcl)

Linguistic contast between bilateral and trilateral roots in Semitics languages (Arabic and Syriac as a model)

the biliteral roots

the triliteral roots

relation between the biliteral and triliteral roots

the Semitic roots . Our ancient lingual scholars

almost unanimously

agree that the inflect words are triliteral

quadrilateral

مؤيد حسين

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The present study investigates the relation between the biliteral and triliteral roots which is the introduction to comprehend the nature of the Semitic roots during its early stage of development being unconfirmed to a single pattern. The present research is not meant to decide on the question of the biliteral roots in the Semitic languages, rather it is meant to confirm the predominance of the triliteral roots on these languages which refers, partially, to analogy adopted by the majority of linguists. This tendency is frequently seen in the languages which incline to over generalize the triliteral phenomenon, i. e., to transfer the biliteral roots to the triliteral room, that is, to subject it to the predominant pattern regarding the r

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Publication Date

Sun Sep 01 2013

Journal Name

Baghdad Science Journal

Six-coordinate oxime-imine cobalt(III) complexes with amino acid co-ligands; synthesis and characterisation

Schiff-base imine-oxime ligands

diaminoethane-N

N`-bis(2-butylidine-3-onedioxime) H2L1 and o-pheneyenediamine-N.N-bis(2-butylidine-3-onedioxime) H2L2

Six coordinate Co(III)-complexes

Structural study.

Mohamad J.

Hasan A.

Alaa M.

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In this publication, several six coordinate Co(III)-complexes are reported. The reaction of 2,3-butanedione monoxime with ethylenediamine or o-phenylenediamine in mole ratios of 2:1 gave the tetradentate imine-oxime ligands diaminoethane-N,N`-bis(2-butylidine-3-onedioxime) H2L1 and o-phenylenediamine-N,N`-bis(2-butylidine-3-onedioxime), respectively. The reaction of H2L1 and H2L2 with Co(NO3)2, and the amino acid co-ligands (glycine or serine) resulted in the formation of the required complexes. Upon complex formation, the ligands behave as a neutral tetradantate species, while the amino acid co-ligand acts as a monobasic species. The mode of bonding and overall geometry of the complexes were determined through physico-chemical and spectro

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Publication Date

Wed Apr 25 2018

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

Strongly C_11-Condition Modules and Strongly T_11-Type Modules

C_11-condition

strongly C_11-condition modules

T_11-type modules strongly T_11-type modules

t-semisimple modules

strongly t-semisimple modules

strongly extending modules

t-extending modules and strongly t-extending modules.

Inaam M A

Farhan D

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In this paper, we introduced module that satisfying strongly -condition modules and strongly -type modules as generalizations of t-extending. A module is said strongly -condition if for every submodule of has a complement which is fully invariant direct summand. A module is said to be strongly -type modules if every t-closed submodule has a complement which is a fully invariant direct summand. Many characterizations for modules with strongly -condition for strongly -type module are given. Also many connections between these types of module and some related types of modules are investigated.

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