Electrical and Electronic Engineering - Research Publications

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Type: Conference Paper × Author: Nesic, Dragan × Author: Dower, Peter × Start date: 2003 × End date: 2009 ×

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Now showing 1 - 6 of 6
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    On cascaded raman amplifier control
    Dower, PM ; Farrell, PM ; Něsić, D (IEEE, 2006-01-01)
    Extremum Seeking Control is applied to the control of cascaded Raman amplifiers for long-haul wavelength division multiplexed optical communications systems. Simulation demonstrates the effectiveness of this control strategy.
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    An application of extremum seeking in cascaded optical amplifier control
    Dower, PM ; Farrell, PM ; Nesic, D (IEEE, 2006)
    This paper considers the control of a particular type of optical amplifier that finds application in long-haul wavelength division multiplexed optical communications systems. The objective of this consideration is to demonstrate an application of extremum seeking to the regulation of amplifier output signal power across a range of signal wavelengths, where limited control authority is available. Although such amplifiers are nonlinear and distributed parameter devices, an extremum seeking design is demonstrated to be a promising approach for achieving the stated amplifier control objectives.
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    Measurement feedback controller design to achieve input to state stability
    Huang, S ; James, MR ; Nesic, D ; Dower, PM (IEEE, 2004)
    An approach for design of measurement feedback controllers achieving input-to-state (ISS) stability properties is presented. A synthesis procedure based on dynamic programming is given. We make use of recently developed results on controller synthesis to achieve uniform l∞ bound [6]. Our results make an important connection between the ISS literature and nonlinear H∞ design methods.
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    On practical input to state stabilization for nonlinear discrete-time systems: A dynamic programming approach
    Huang, S ; James, MR ; Nesic, D ; Dower, P (IEEE, 2003-04-13)
    A novel technique for synthesizing dynamic state feedback controllers that achieve practical input to state stability (PISS) property for nonlinear discrete-time systems is presented. The PISS controller design for the original system is solved via an auxiliary l∞-bounded (LIB) robustness synthesis problem for an auxiliary system. A complete solution for the LIB synthesis problem has been presented recently in the literature. The obtained static state feedback LIB controller for the auxiliary system can be interpreted as a dynamic state feedback PISS controller for the original system. The obtained solution is in terms of a dynamic programming equation (or inequality).
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    Analysis of input to state stability for discrete time nonlinear systems via dynamic programming
    Huang, SD ; James, MR ; Nesic, D ; Dower, P (IEEE, 2003)
    This paper presents novel analysis results for input-to-state stability (ISS) that utilise dynamic programming techniques to characterise minimal ISS gains and transient bounds. These characterisations naturally lead to computable necessary and sufficient conditions for ISS. Our results make a connection between ISS and optimisation problems in nonlinear dissipative systems theory (including L2-gain analysis and nonlinear H∞ theory).
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    An application of extremum seeking in cascaded optical amplifier control
    DOWER, P. ; FARRELL, P. ; NESIC, D. (IEEE - Institute of Electrical and Electronic Engineers, 2006)