نتایج جستجو برای: large disturbance stability

تعداد نتایج: 1339466  

Journal: :Nature communications 2015
Alexandra J Wright Anne Ebeling Hans de Kroon Christiane Roscher Alexandra Weigelt Nina Buchmann Tina Buchmann Christine Fischer Nina Hacker Anke Hildebrandt Sophia Leimer Liesje Mommer Yvonne Oelmann Stefan Scheu Katja Steinauer Tanja Strecker Wolfgang Weisser Wolfgang Wilcke Nico Eisenhauer

The natural world is increasingly defined by change. Within the next 100 years, rising atmospheric CO₂ concentrations will continue to increase the frequency and magnitude of extreme weather events. Simultaneously, human activities are reducing global biodiversity, with current extinction rates at ~1,000 × what they were before human domination of Earth's ecosystems. The co-occurrence of these ...

2002
DAIZHAN CHENG TIELONG SHEN T. J. TARN

In this paper, the problem of pseudo-Hamiltonian realization of a control system is studied. Several sufficient conditions are obtained. The stability of a dynamic system is investigated via dissipative pseudo-Hamiltonian realization, and the stabilization of a control system is also investigated via feedback dissipative pseudo-Hamiltonian realization. Some relations between the stability (asym...

2013
Rong Mei Mou Chen

In this work, the robust position control scheme is proposed for the electro-mechanical system using the disturbance observer and backstepping control method. To the external unknown load of the electro-mechanical system, the nonlinear disturbance observer is given to estimate the external unknown load. Combining the output of the developed nonlinear disturbance observer with backstepping techn...

Journal: :MCSS 2009
Joseph A. Ball Quanlei Fang Gilbert J. Groenewald Sanne ter Horst

One approach to robust control for linear plants with structured uncertainty as well as for linear parameter-varying (LPV) plants (where the controller has on-line access to the varying plant parameters) is through linearfractional-transformation (LFT) models. Control issues to be addressed by controller design in this formalism include robust stability and robust performance. Here robust perfo...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2003
Jeffrey M Davis Sandra M Troian

Recent investigations of microfluidic flows have focused on manipulating the motion of very thin liquid films by modulating the surface tension through an applied streamwise temperature gradient. The extent to which the choice of contact line model affects the flow and stability of such thermocapillary-driven films is not completely understood. Regardless of the contact line model used, the lin...

2017
Mou Chen Wen-Hua Chen

A robust control scheme is proposed for a class of systems with uncertainty and time delay based on disturbance observer technique. A disturbance observer is developed to estimate the disturbance generated by an exogenous system, and the design parameter of the disturbance observer is determined by solving linear matrix inequalities (LMIs). Based on the output of the disturbance observer, a rob...

Journal: :IEEJ Transactions on Electronics, Information and Systems 1997

2011
Pramod D. Shendge

Index Terms—sliding mode control, uncertainty and disturbance estimation, flexible joint. Abstract—This paper proposes sliding mode control based on uncertainty and disturbance estimator (UDE), for trajectory tracking control of flexible joint robotic system. UDE is used to estimate plant uncertainty and disturbances. The controller does not requires knowledge of plant uncertainty and external ...

Journal: :Transactions of the Society of Instrument and Control Engineers 1987

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