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On the Existence and Design of Functional Observers
IEEE Transactions on Automatic Control, 2020This paper concerns the problem of designing a functional observer. It gives a general presentation and a new formulation for the design of the observers considered by Darouach [1] in 2000. By introducing the controllability and stabilizability notions, the necessary and sufficient conditions for the existence of these observers are revised and proved,
Mohamed Darouach, Tyrone Fernando
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An Approach to Observer Design
1999In the last decade the behavioral point of view [8, 11, 12] has received an increasingly broader acceptance as an approach for modeling dynamical systems, and now is generally viewed as a cogent framework for system analysis. One of the reasons of its success has to be looked for in the fact that it does not start with the input/output point of view ...
VALCHER, MARIA ELENA, WILLEMS J. C.
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2007
Much can be learned about a process by observing changes over time or by comparing two different processes under different conditions. This chapter introduces the major types of observational study designs: the longitudinal or cohort study, the comparative or case-control study, and some of their variants.
Raymond G, Hoffmann, Hyun Ja, Lim
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Much can be learned about a process by observing changes over time or by comparing two different processes under different conditions. This chapter introduces the major types of observational study designs: the longitudinal or cohort study, the comparative or case-control study, and some of their variants.
Raymond G, Hoffmann, Hyun Ja, Lim
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2017 IEEE 37th International Conference on Distributed Computing Systems (ICDCS), 2017
We present the observable-by-design principle. We believe that the new generation of services, products, and environment management systems should be designed to adapt to changes. Therefore, they should be designed to be observable, and their design should proactively and reactively adapt to the changes observed both internally and externally.
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We present the observable-by-design principle. We believe that the new generation of services, products, and environment management systems should be designed to adapt to changes. Therefore, they should be designed to be observable, and their design should proactively and reactively adapt to the changes observed both internally and externally.
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Observers design in complex networks: Pinning observability
2013 10th IEEE International Conference on Control and Automation (ICCA), 2013In this paper, the new concept of pinning observability for complex networks and systems is discussed. Note that in a very large-scale network, there are many nodes and it is impossible to measure the states of all the nodes so as to reach synchronization between the original network and a new constructed network.
Wenwu Yu +3 more
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BMJ, 2012
Researchers investigated whether pioglitazone was associated with an increased risk of bladder cancer in people with type 2 diabetes.1 Use of pioglitazone, an oral antidiabetic agent in the thiazolidinedione class, is controversial.2 The researchers used the general practice research database to extract data from individual patients’ primary care ...
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Researchers investigated whether pioglitazone was associated with an increased risk of bladder cancer in people with type 2 diabetes.1 Use of pioglitazone, an oral antidiabetic agent in the thiazolidinedione class, is controversial.2 The researchers used the general practice research database to extract data from individual patients’ primary care ...
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Design of Observers for Hybrid Systems
2002A methodology for the design of dynamical observers for hybrid plants is proposed. The hybrid observer consists of two parts: a location observer and a continuous observer. The former identifies the current location of the hybrid plant, while the latter produces an estimate of the evolution of the continuous state of the hybrid plant.
A. Balluchi +3 more
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Nonlinear observer design techniques with observability functions
52nd IEEE Conference on Decision and Control, 2013Two different observer design techniques for linear and nonlinear systems based on the so-called observability function, which is related to the Gramian matrix in the linear case, are proposed. Asymptotic and finite-time convergence results are provided. The effectiveness of the proposed approaches are demonstrated via numerical simulations.
CARNEVALE, DANIELE +3 more
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On functional observability and functional observer design
AutomaticaThis manuscript deals with the problem of observer design, to estimate all the states of a system. Let us consider the following multivariable system, \begin{align*} \dot{x}(t) & = A x(t)+B u(t),\\ y(t) & = C x(t),\\ z(t) & = L x(t), \end{align*} with the initial state \(x(0)=x_0\), \(x(t) \in \mathbb{R}^n\) is the state vector, \(u(t) \in \mathbb{R}^m\
Mohamed Darouach, Tyrone Fernando
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Recursive observer design beyond the uniform observability
Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2002We propose a recursive design scheme of state observer for lower triangular nonlinear systems. The design begins from the bottom dynamics and propagates to upper dynamics recalling the backstepping scheme for nonlinear control, The proposed class of systems is fairly general since it includes non-uniformly observable or detectable multi-output systems.
Hyungbo Shim, Jin Heon Seo
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