Results 241 to 250 of about 1,930,507 (291)
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How boundaries control plant development
Current Opinion in Plant Biology, 2014Continuous growth and organ development from the shoot apical meristem (SAM) requires a precise coordination of stem cell proliferation, commitment of stem cell descendants to diverse differentiation pathways and establishment of morphological meristem-to-organ boundaries.
Petra, Žádníková, Rüdiger, Simon
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Dynamic boundary control and disturbance rejection in boundary control systems
[1992] Proceedings of the 31st IEEE Conference on Decision and Control, 2005The authors consider a system described by the one-dimensional linear wave equation in a bounded domain with appropriate boundary conditions. They assume that the system is subjected to external disturbance. To stabilize the undisturbed system, a dynamic boundary control method applied at the free end of the system is proposed, and it is shown that the
O. Morgul, S.M. Shahruz
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Microvia Fill Process Boundary Control
IFAC Proceedings Volumes, 2014This paper presents an exponentially stabilizing boundary control for the microvia fill process. The control accounts for the mass balance of the copper ions in the electrolyte and for the surface mass balance of the deposition-blocking additives, both modeled with a diffusion mass transfer model in a shape changing domain.
Tenno, Robert, Pohjoranta, Antti
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Boundary control of the third boundary
Automation and Remote Control, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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2000
In this chapter, we present boundary control strategies for reducing vibration in three different engineering applications of flexible mechanical systems. Two of these applications will share the interesting characteristic of having flexible and rigid subsystems, which leads to hybrid dynamic models containing coupled PDEs and ODEs.
Marcio S. de Queiroz +3 more
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In this chapter, we present boundary control strategies for reducing vibration in three different engineering applications of flexible mechanical systems. Two of these applications will share the interesting characteristic of having flexible and rigid subsystems, which leads to hybrid dynamic models containing coupled PDEs and ODEs.
Marcio S. de Queiroz +3 more
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2012
In this chapter we are in particular interested in systems with a control at the boundary of their spatial domain. We show that these systems have well-defined solutions provided the input is sufficiently smooth.
Birgit Jacob, Hans J. Zwart
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In this chapter we are in particular interested in systems with a control at the boundary of their spatial domain. We show that these systems have well-defined solutions provided the input is sufficiently smooth.
Birgit Jacob, Hans J. Zwart
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Boundary Observers for Boundary Control Systems
2020The paper studies the output observation problem for a class of linear distributed parameter systems where both the plant and the observer are modelled as boundary input/output systems. The presented results provide sufficient conditions for the plant and the observer which guarantee the asymptotic output observation to hold.
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2020
As we have seen above, the theory of Gel’fand–Levitan–Marchenko deals with stationary solutions of Schrodinger equations, and uses analytic properties with respect to energy of its spectral data. In the early stage of the study of one-dimensional inverse problems, M. G. Krein proposed an approach to inverse problems for the wave equation.
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As we have seen above, the theory of Gel’fand–Levitan–Marchenko deals with stationary solutions of Schrodinger equations, and uses analytic properties with respect to energy of its spectral data. In the early stage of the study of one-dimensional inverse problems, M. G. Krein proposed an approach to inverse problems for the wave equation.
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Boundary Control Systems with Yosida Type Approximate Boundary Observation
IFAC Proceedings Volumes, 2013A model of boundary control system with boundary observation is described and analyzed, which involves no unbounded operator except for the dynamics generator. This model consists of an extended abstract differential equation whose state components are the boundary input, the state (up to an affine transformation) and a Yosida-type approximation of the
Dehaye, Jérémy R., Winkin, Joseph J.
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Robust controller for boundary control systems
International Journal of Control, 1983Some basic results of robust controller theory are generalized to distributed parameter systems with unbounded control and perturbation operators. The theory presented is then applied to construct a flow adaptive robust controller for heat exchangers.
Seppo Pohjolainen, Isto Lätti
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