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Existence of a nonpositive solution to riccati equation

Jan C. Willems
- 01 Jan 1974 - 
- Iss: 5, pp 592-593
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This article is published in IEEE Transactions on Automatic Control.The article was published on 1974-01-01 and is currently open access. It has received 48 citations till now. The article focuses on the topics: Algebraic Riccati equation & Riccati equation.

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Book

Linear Matrix Inequalities in System and Control Theory

Edwin E. Yaz
TL;DR: In this paper, the authors present a brief history of LMIs in control theory and discuss some of the standard problems involved in LMIs, such as linear matrix inequalities, linear differential inequalities, and matrix problems with analytic solutions.
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Nonoptimality of the steady-state cruise for aircraft

TL;DR: In this article, a second-order variational analysis using a frequency-domain version of the classical Jacobi optimality condition is proposed to improve fuel efficiency of cycle cruise paths.
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Values and strategies for infinite time linear quadratic games

TL;DR: In this paper, it was shown that an appropriate solution of an algebraic Riccati type equation determines the value of the game but not necessarily any equilibrium strategies for a class of infinite time linear quadratic games.
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On quadratic differential forms

TL;DR: In this article, the authors introduce some basic notation for quadratic differential forms and provide a new result regarding the existence of a nonnegative storage function for non-negative storage functions.
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Kalman-Popov-Yakubovich lemma and the S-procedure: A historical essay

TL;DR: A history of the Kalman-Popov-Yakubovich lemma and the theorem of losslessness of the S-procedure can be found in this article, where a review of the studies directly concerned with these statements are reviewed.
References
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Journal ArticleDOI

Least squares stationary optimal control and the algebraic Riccati equation

TL;DR: In this paper, the optimal control of linear systems with respect to quadratic performance criteria over an infinite time interval is treated, and the integrand of the performance criterion is allowed to be fully quadratically in the control and the state without necessarily satisfying the definiteness conditions which are usually assumed in the standard regulator problem.
Journal ArticleDOI

Algebraic properties of minimal degree spectral factors

TL;DR: The paper derives a result connecting frequency-domain and time-domain properties of different spectral factors of the one power spectrum matrix, interpreted from an algebraic point of view, and applied to the linear-quadratic optimal control and filtering problem.
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