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Journal ArticleDOI

Bilinear approximation of general non-linear dynamic systems with linear inputs

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TLDR
In this article, two methods are developed by which control systems that are non-linear in the state variables but linear in the inputs may be approximated by bilinear systems in the neighbourhood of a steady state.
Abstract
Two methods are developed by which control systems that are non-linear in the state variables but linear in the inputs may be approximated by bilinear systems in the neighbourhood of a steady state. For both methods the approximations can be made successively more accurate at the expense of higher dimensionality, and can be a considerable improvement over the linear approximation. The resulting dimensionalities are determined as functions of the accuracy. Illustrative examples are given, and finally the two models are compared. Both are found to have considerable merit.

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Citations
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Journal ArticleDOI

Hierarchical parameter and state estimation for bilinear systems

TL;DR: The interaction estimation theory is introduced to study an on-line algorithm for joint state-parameter estimation and a bilinear state observer based recursive least squares algorithm is developed using the least squares method.
Journal ArticleDOI

Algebraic approaches for fault identification in discrete-event systems

TL;DR: Algebraic approaches for fault identification in discrete-event systems that are described by Petri nets are developed and a redundant Petri net embedding is explored that uses 2k additional places and enables the simultaneous identification of 2k-1 transition faults and k place faults.
Journal ArticleDOI

Polynomial extended Kalman filter

TL;DR: A polynomial version of the well-known extended Kalman filter (EKF) for the state estimation of nonlinear discrete-time stochastic systems is presented, showing significant improvements.
Journal ArticleDOI

Recursive parameter estimation and its convergence for bilinear systems

TL;DR: In this paper, an adaptive filtering-based recursive identification algorithm for joint estimation of states and parameters of bilinear state-space systems with an autoregressive moving average noise was developed.
Journal ArticleDOI

Discretization of nonlinear control systems via the Carleman linearization

TL;DR: The proposed Carleman discretization does not deteriorate rapidly as the sampling period increases, and examples of open-loop and deadbeat closed-loop responses of an isothermal continuous stirred tank reactor reveal the advantages of the proposed discretized scheme.
References
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Journal ArticleDOI

Bilinear systems: An appealing class of "nearly linear" systems in theory and applications

TL;DR: This work is intended to motivate the interest of bilinear systems and to present the current state of research in its various aspects.
Journal ArticleDOI

Natural Bilinear Control Processes

TL;DR: It is shown that these so-called bilinear systems have a variable dynamical structure that makes them quite controllable and may utilize appropriately controlled unstable modes of response to enhance controllability.
Journal ArticleDOI

Realization and Structure Theory of Bilinear Dynamical Systems

TL;DR: It is shown that the condition of realizability corresponds to that of the factorizability of the kernels of this expansion of the zero-state response and there exists a canonical form of the equations and the results of the realization theory are interpreted on this basis.
Book ChapterDOI

Lie Algebras and Lie Groups in Control Theory

TL;DR: The theory of differential equations and control have been linked very closely because most of the early applications of control theory were to engineering problems of the type which are most naturally described by ordinary differential equations as discussed by the authors.
Journal ArticleDOI

Paper: Observation of bilinear systems with application to biological control

TL;DR: A system of bilinear equations is derived which under appropriate conditions model the microbial cellgrowth and product formation of various waste treatment and fermentation systems and are significant for the on-line control of these biological processes.
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