• 제목/요약/키워드: linear matrix

검색결과 2,186건 처리시간 0.022초

A Study on Linear Matrix Inequalities Robust Active Suspension Control System Design Algorithm

  • Park, Jung-Hyen
    • Journal of information and communication convergence engineering
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    • 제6권1호
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    • pp.105-109
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    • 2008
  • A robust optimal control system design algorithm in active suspension equipment adopting linear matrix inequalities control system design theory is presented. The validity of the linear matrix inequalities robust control system design in active suspension system through the numerical examples is also investigated.

INVOLUTORY AND S+1-POTENCY OF LINEAR COMBINATIONS OF A TRIPOTENT MATRIX AND AN ARBITRARY MATRIX

  • Bu, Changjiang;Zhou, Yixin
    • Journal of applied mathematics & informatics
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    • 제29권1_2호
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    • pp.485-495
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    • 2011
  • Let $A_1$ and $A_2$ be $n{\times}n$ nonzero complex matrices, denote a linear combination of the two matrices by $A=c_1A_1+c_2A_2$, where $c_1$, $c_2$ are nonzero complex numbers. In this paper, we research the problem of the linear combinations in the general case. We give a sufficient and necessary condition for A is an involutive matrix and s+1-potent matrix, respectively, where $A_1$ is a tripotent matrix, with $A_1A_2=A_2A_1$. Then, using the results, we also give the sufficient and necessary conditions for the involutory of the linear combination A, where $A_1$ is a tripotent matrix, anti-idempotent matrix, and involutive matrix, respectively, and $A_2$ is a tripotent matrix, idempotent matrix, and involutive matrix, respectively, with $A_1A_2=A_2A_1$.

A SIMPLE METHOD FOR OBTAINING PROJECTION MATRIX USING ALGEBRAIC PROPERTIES

  • Hasik, Sun-Woo
    • Journal of applied mathematics & informatics
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    • 제8권2호
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    • pp.651-658
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    • 2001
  • The projection matrix plays an important role in the linear model theory. In this paper we derive an algebraic relationship between the projection matrices of submatrices of the design matrix. Using this relationship we can easily obtain the projection matrices of any submatrices of the design matrix. Also we show that every projection matrix can be obtained as a linear combination of Kronecker products of identity matrices and matrices with all elements equal to 1.

SHECHTER SPECTRA AND RELATIVELY DEMICOMPACT LINEAR RELATIONS

  • Ammar, Aymen;Fakhfakh, Slim;Jeribi, Aref
    • 대한수학회논문집
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    • 제35권2호
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    • pp.499-516
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    • 2020
  • In this paper, we denote by L the block matrix linear relation, acting on the Banach space X ⊕ Y, of the form ${\mathcal{L}}=\(\array{A&B\\C&D}\)$, where A, B, C and D are four linear relations with dense domains. We first try to determine the conditions under which a block matrix linear relation becomes a demicompact block matrix linear relation (see Theorems 4.1 and 4.2). Second we study Shechter spectra using demicompact linear relations and relatively demicompact linear relations (see Theorem 5.1).

역사발생적 관점에서 본 행렬 지도의 재음미 (A Review of Teaching the Concept of the Matrix in relation to Historico-Genetic Principle)

  • 조성민
    • 한국학교수학회논문집
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    • 제12권1호
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    • pp.99-114
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    • 2009
  • 선형대수는 최근 이공계열 뿐만 아니라 인문 사회 과학 분야에서도 많은 관심을 받고 있다. 그러나 선형대수는 대학의 기초 과목으로 채택된 지 20-30년 밖에 되지 않은 분야로, 선형대수의 지도에 대한 연구는 상대적으로 많지 않은 편이다. 이에 1990년 선형대수 교육과정 연구 단체(The Linear Algebra Curriculum Study Group)가 결성되고, 선형대수 지도를 개선하기 위한 움직임이 다양하게 나타나고 있다. 본 논문에서는 선형대수의 주요 도구 중 하나인 행렬과 관련된 연구들을 살펴보고, 역사발생적 원리를 바탕으로 한 행렬 지도 방법을 제안하고자 한다. 이를 위해 행렬과 행렬식, 연립일차방정식과 행렬, 일차변환의 개념 발달 과정을 분석하고, 역사발생적 관점에서의 행렬 지도 방안을 모색하였다.

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LINEAR TRANSFORMATIONS THAT PRESERVE TERM RANK BETWEEN DIFFERENT MATRIX SPACES

  • Song, Seok-Zun;Beasley, Leroy B.
    • 대한수학회지
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    • 제50권1호
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    • pp.127-136
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    • 2013
  • The term rank of a matrix A is the least number of lines (rows or columns) needed to include all the nonzero entries in A. In this paper, we obtain a characterization of linear transformations that preserve term ranks of matrices over antinegative semirings. That is, we show that a linear transformation T from a matrix space into another matrix space over antinegative semirings preserves term rank if and only if T preserves any two term ranks $k$ and $l$.

A NEW APPROACH FOR NUMERICAL SOLUTION OF LINEAR AND NON-LINEAR SYSTEMS

  • ZEYBEK, HALIL;DOLAPCI, IHSAN TIMUCIN
    • Journal of applied mathematics & informatics
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    • 제35권1_2호
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    • pp.165-180
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    • 2017
  • In this study, Taylor matrix algorithm is designed for the approximate solution of linear and non-linear differential equation systems. The algorithm is essentially based on the expansion of the functions in differential equation systems to Taylor series and substituting the matrix forms of these expansions into the given equation systems. Using the Mathematica program, the matrix equations are solved and the unknown Taylor coefficients are found approximately. The presented numerical approach is discussed on samples from various linear and non-linear differential equation systems as well as stiff systems. The computational data are then compared with those of some earlier numerical or exact results. As a result, this comparison demonstrates that the proposed method is accurate and reliable.

선형계획을 이용한 행렬게임의 감도분석 (Sensitivity Analysis of Matrix Game by using Linear Programming)

  • 성기석;박순달
    • 대한산업공학회지
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    • 제14권1호
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    • pp.43-49
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    • 1988
  • 이 논문은 선형계획의 감도분석을 이용한 행렬게임의 강도분석을 연구하였다. 행렬게임과 선형계획과의 관계는 이미 잘 알려져 있고, 행렬게임 및 선형계획에서의 감도분석도 이미 연구되었다. 이 논문에서는 행렬게임을 선형계획법식으로 변형시킨 후, 이 선형계획식에서 감도분석을 함으로써 원래의 행렬게임에서의 감도분석을 수행할 수 있다는 것을 보였다.

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선형행렬부등식에 의한 불확실한 선형시스템의 견실한 극점배치 (A Robust Pole Placement for Uncertain Linear Systems via Linear Matrix Inequalities)

  • 류석환
    • 한국지능시스템학회:학술대회논문집
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    • 한국퍼지및지능시스템학회 2000년도 추계학술대회 학술발표 논문집
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    • pp.476-479
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    • 2000
  • This paper deals with a robust pole placement method for uncertain linear systems. For all admissible uncertain parameters, a static output feedback controller is designed such that all the poles of the closed loop system are located within the prespecfied disk. It is shown that the existence of a positive definite matrix belonging to a convex set such that its inverse belongs to another convex set guarantees the existence of the output feedback gain matrix for our control problem. By a sequence of convex optimization the aforementioned matrix is obtained. A numerical example is solved in order to illustrate efficacy of our design method.

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대형 스파스 메트릭스 선형방정식을 효율적으로 해석하는 씨스톨릭 어레이 (A systolic Array to Effectively Solve Large Sparce Matrix Linear System of Equations)

  • 이병홍;채수환;김정선
    • 한국통신학회논문지
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    • 제17권7호
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    • pp.739-748
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    • 1992
  • 스트라이프 구조를 이용하여 대형 스파스 선형 방정식을 해석하는 CGM 반복 씨스톨릭 알고리즘을 제시하고, 이를 씨스톨릭 어레이로 구현했다. 메트릭스 A를 상삼각 행렬과 대각선행렬, 하삼각 행렬로 나누어서 이들이 별개의 선형 어레이에 의해서 병행적으로 실행되도록 했다. 따라서 1개의 선형 어레이를 사용했을 때보다도 실행시간이 대략 1/2로 단축되며, 스트라이프 구조를 이용하므로서 불규칙하게 분포된 스파스메트릭스의 연산을 효율적으로 할 수 있다.

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