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International Conference on Energy Efficient Technologies for Sustainability (ICEETS)

作者： Imran Sheikh Center of Excellence in Complex and Non-linear Dynamical Systems VJTI Mumbai

ISBN: (纸本)9781467399265

The paper presents the application of DSP processor for energy management system (EMS) of non-renewable energy and renewable energy sources intended for grid connected applications. The hybrid supplies like wind power, solar power, fuel cell is the clean energy source with zero emission of hazardous gas. It is used in the portable power generation, stationary power generation and power for transportation. The storage devices like battery or ultra-capacitor is connected parallel to store the energy and to improve the transient response. The combination of hybrid energy and storage devices are considered for better charging and discharging with better life time of the battery and ultra-capacitor. The presented scheme explain the generation of pulse width modulation (PWM) gated pulse signals using the TMS320F28335 DSP digital signal controller with MATLAB/Simulink and Code composer studio (CCS). The plant for hybrid energy and storage devices based energy generation is intended for grid connected applications implemented in the dSPACE 1104 R&D Controller board for real time simulation and output of the system.

关键词： Pulse width modulation Digital signal processing Energy management MATLAB Fuel cells Hybrid power systems Real-time systems

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Control of Autonomous Underwater Vehicle using Reduced Order Model Predictive Control in Three Dimensional Space

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IFAC-PapersOnLine 2016年第1期49卷 772-777页

作者： Pushpak Jagtap Pranoti Raut Pawan Kumar Ankit Gupta N.M. Singh Faruk Kazi Center of Excellence in Complex and Nonlinear Dynamical Systems Veermata Jijabai Technological Institute Mumbai-19 India Department of Electrical Engineering Veermata Jijababai Technological Institute Mumbai-19 India

The paper investigates the motion control problem of Autonomous Underwater Vehicle (AUV) in three-dimensional space. Here, we consider a non-linear, nonholonomic and highly under-actuated dynamical model of AUV with six degrees of freedom. Because of its higher-dimensional complex model, the traditional model predictive control technique leads to computational complexity and loss of controllability. The paper proposes a novel MPC scheme using reduced dynamical model. In which, the MPC problem to control AUV in vertical and horizontal planes is formulated as independent optimization problems. The proposed scheme reduces higher-dimensional model to two independent time-varying linearized models for controlling motion in vertical and horizontal planes by neglecting weakly coupled dynamics. Further the reduced optimization problem is solved using quadratic programming to achieve trade-off between computational complexity and control effort optimization. The simulation results show the effectiveness of the proposed control scheme which is employed on non-linear model.

关键词： Autonomous underwater vehicle model predictive control non-linear dynamical system constrained optimization problem and reduced order dynamics

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Controlled ordering of topological charges in an exciton-polariton chain

arXiv

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arXiv 2018年

作者： Gao, T. Egorov, O.A. Estrecho, E. Winkler, K. Kamp, M. Schneider, C. Höfling, S. Truscott, A.G. Ostrovskaya, E.A. Nonlinear Physics Centre Research School of Physics and Engineering Australian National University CanberraACT2601 Australia Institute of Molecular plus Tianjin University Tianjin300072 China Technische Physik Wilhelm-Conrad-Röntgen-Research Center for Complex Material Systems Universität Würzburg Am Hubland WürzburgD-97074 Germany ARC Centre of Excellence in Future Low-Energy Electronics Technologies SUPA School of Physics and Astronomy University of St Andrews St AndrewsKY16 9SS United Kingdom Laser Physics Centre Research School of Physics and Engineering Australian National University CanberraACT2601 Australia

We demonstrate, experimentally and theoretically, controlled loading of an exciton-polariton vortex chain into a 1D array of trapping potentials. Switching between two types of vortex chains, with topological charges of the same or alternating sign, is realised by means of appropriate shaping of an incoherent pump beam that drives the system to the regime of bosonic condensation. In analogy to spin chains, these vortex sequences realise either a "ferromagnetic" or an "anti-ferromagnetic" order, whereby the role of spin is played by the orbital angular momentum. The "ferromagnetic" ordering of vortices is associated with the formation of a persistent chiral current. Our results pave the way for controlled creation of nontrivial distributions of orbital angular momentum and topological order in a periodic exciton-polariton system. Copyright © 2018, The Authors. All rights reserved.

关键词： Vortex flow

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Controlled Ordering of Topological Charges in an Exciton-Polariton Chain

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Physical Review Letters 2018年第22期121卷 225302-225302页

作者： T. Gao O. A. Egorov E. Estrecho K. Winkler M. Kamp C. Schneider S. Höfling A. G. Truscott E. A. Ostrovskaya Nonlinear Physics Centre Research School of Physics and Engineering The Australian National University Canberra ACT 2601 Australia Institute of Molecular Plus Tianjin University 300072 Tianjin China Technische Physik Wilhelm-Conrad-Röntgen-Research Center for Complex Material Systems Universität Würzburg Am Hubland D-97074 Würzburg Germany Institute of Condensed Matter Theory and Optics Friedrich-Schiller-Universität Jena Max-Wien-Platz 1 D-07743 Jena Germany ARC Centre of Excellence in Future Low-Energy Electronics Technologies The Australian National University Canberra ACT 2601 Australia SUPA School of Physics and Astronomy University of St. Andrews St. Andrews KY16 9SS United Kingdom Laser Physics Centre Research School of Physics and Engineering The Australian National University Canberra ACT 2601 Australia

We demonstrate, experimentally and theoretically, controlled loading of an exciton-polariton vortex chain into a 1D array of trapping potentials. Switching between two types of vortex chains, with topological charges of the same or alternating signs, is achieved by appropriately shaping an off-resonant pump beam that drives the system to the regime of bosonic condensation. In analogy to spin chains, these vortex sequences realize either a “ferromagnetic” or an “antiferromagnetic” order, whereby the role of spin is played by the orbital angular momentum. The ferromagnetic ordering of vortices is associated with the formation of a persistent chiral current. Our results pave the way for the controlled creation of nontrivial distributions of orbital angular momentum and topological order in a periodic exciton-polariton system.

关键词： Exciton polariton Quantum fluids & solids Vortices in superfluids

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Observation of bosonic condensation in a hybrid monolayer MoSe2-GaAs microcavity

arXiv

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arXiv 2018年

作者： Waldherr, Max Lundt, Nils Klaas, Martin Betzold, Simon Wurdack, Matthias Baumann, Vasilij Estrecho, Eliezer Nalitov, Anton Cherotchenko, Evgenia Cai, Hui Ostrovskaya, Elena A. Kavokin, Alexey V. Tongay, Sefaattin Klembt, Sebastian Höfling, Sven Schneider, Christian Technische Physik and Wilhelm-Conrad-Röntgen-Research Center for Complex Material Systems Universität Würzburg Würzburg Am HublandD-97074 Germany Nonlinear Physics Centre Research School of Physics and Engineering Australian National University CanberraACT2601 Australia Science Institute University of Iceland Dunhagi 3 ReykjavikIS-107 Iceland ITMO University St. Petersburg197101 Russia Physics and Astronomy School University of Southampton Highfield SouthamptonSO171BJ United Kingdom School for Engineering of Matter Transport and Energy Arizona State University TempeAZ85287 United States ARC Centre of Excellence in Future Low-Energy Electronics Technologies SPIN-CNR Viale del Politecnico 1 RomeI-00133 Italy Spin Optics Laboratory St-Petersburg State University 1 Ulianovskaya 194021 Russia SUPA School of Physics and Astronomy University of St. Andrews St. AndrewsKY16 9SS United Kingdom

Condensation of bosons into a macroscopic quantum state belongs to the most intriguing phenomena in nature. It was first realized in quantum gases of ultra-cold atoms, but more recently became accessible in open-dissipative, exciton-based solid-state systems at elevated temperatures. Semiconducting monolayer crystals have emerged as a new platform for studies of strongly bound excitons in ultimately thin materials. Here, we demonstrate the formation of a bosonic condensate driven by excitons hosted in an atomically thin layer of MoSe2, strongly coupled to light in a solid-state resonator. The structure is operated in the regime of collective strong coupling, giving rise to hybrid exciton-polariton modes composed of a Tamm-plasmon resonance, GaAs quantum well excitons and two-dimensional excitons confined in a monolayer of MoSe2. Polariton condensation in a monolayer crystal manifests by a superlinear increase of emission intensity from the hybrid polariton mode at injection powers as low as 4.8 pJ/pulse, as well as its density-dependent blueshift and a dramatic collapse of the emission linewidth as a hallmark of temporal coherence. Importantly, we observe a significant spin-polarization in the injected polariton condensate, a fingerprint of the core property of monolayer excitons subject to spin-valley locking. The observed effects clearly underpin the perspective of building novel highly non-linear valleytronic devices based on light-matter fluids, coherent bosonic light sources based on atomically thin materials, and paves the way towards studying materials with unconventional topological properties in the framework of bosonic condensation. Copyright © 2018, The Authors. All rights reserved.

关键词： Excitons

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Fuel cell and ultra-capacitor based hybrid energy control using IDA-PBC methodology

Fuel cell and ultra-capacitor based hybrid energy control us...

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International Conference on Industrial Instrumentation and Control (ICIC)

作者： Sneha Mane Faruk Kazi N. M. Singh VJTI Center of Excellence in Complex and Non-linear Dynamical Systems Mumbai

ISBN: (纸本)9781479971664

The paper presents passivity based control strategy for hybrid energy management system comprising of fuel cell and ultra capacitors. Industrial applications like electrical vehicles and certain microgrid combinations are using fuel cell as a clean energy alternative for the requirement of DC supply. But due to its slow dynamics it needs to be often combined with auxiliary storage systems like battery, super capacitors or ultra capacitors. We consider hybrid combination of fuel cell with ultra capacitors because it supports instantaneous charging and discharging characteristics with increased life time. The main contribution of this paper is to synthesize a non-linear control law based on interconnection damping assignment-passivity based control (IDA-PBC) with a desired energy function combining exponential and quadratic form. It was shown that the derived energy function satisfies conditions for candidate Lyapunov function and hence thereby satisfies stability criterion. Mathematical model of the system is obtained by the state space averaging approach. Simulations are performed on LabVIEW environment to validate the results.

关键词： Fossil fuels Iron Digital video broadcasting Power capacitors

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Absolute stability of fuel cell-super capacitor hybrid power source using Lure Lyapunov formulation for load variations

Absolute stability of fuel cell-super capacitor hybrid power...

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International Conference on Industrial Instrumentation and Control (ICIC)

作者： Manas Mejari Faruk Kazi Sneha Mane Navdeep Singh VJTI Center of Excellence in Complex and Non-linear Dynamical Systems Mumbai

Fuel Cells have emerged as one the most efficient energy conversion devices which convert chemical energy into electricity. It is a common practice to use supercapacitor or battery with a fuel cell to compensate for a high instantaneous power requirement during transients in applications such as hybrid electric vehicle, smart grids etc. This paper presents a non-linear controller design method for a fuel cell-supercapacitor hybrid structure. We identify the Lure form of the dynamic model of fuel cell-supercapacitor hybrid power source. A class of control laws is proposed to ensure the absolute stability of the system. The feedback control law satisfies the necessary and sufficient conditions for stability which are established using a Lure type Lyapunov function. This method offers more degrees of freedom in choosing controller parameters hence providing more flexibility in controller design. The performance of the proposed control scheme is tested via simulations.

关键词： Digital video broadcasting Chemicals Iron Power conversion Europe Fuel cells

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Shaping the energy of mechanical systems without solving partial differential equations

Shaping the energy of mechanical systems without solving par...

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2015 American Control Conference, ACC 2015

作者： Donaire, Lejandro Mehra, Achit Ortega, Omeo Satpute, Umeet Romero, Ose Guadalupe Kazi, Aruk Singh, M.N. University of Newcastle NewcastleNSW Australia Centre of Excellence in Complex and Nonlinear Dynamical Systems VJTI Mumbai India Laboratoire des Signaux et Systèmes CNRS-SUPELEC Plateau du Moulon Gif-sur-Yvette91192 France

ISBN: (纸本)9781479986842

Control of underactuated mechanical systems via energy shaping is a well-established, robust design technique. Unfortunately, its application is often stymied by the need to solve partial differential equations (PDEs). In this paper a new, fully constructive, procedure to shape the energy for a class of mechanical systems that obviates the solution of PDEs is proposed. The control law consists of a first stage of partial feedback linearization followed by a simple proportional plus integral controller acting on two new passive outputs. The class of systems for which the procedure is applicable is identified imposing some (directly verifiable) conditions on the systems inertia matrix and its potential energy function. It is shown that these conditions are satisfied by three benchmark examples. © 2015 American Automatic Control Council.

关键词： Partial differential equations

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complex Laplacian based Algorithm for Output Synchronization of Multi-agent systems using Internal Model Principle

Complex Laplacian based Algorithm for Output Synchronization...

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Conference on Control Applications

作者： Pushpak Jagtap Aniket Deshpande N. M. Singh Faruk Kazi Center of Excellence in Complex and Nonlinear Dynamical Systems Veermata Jijabai Technological Institute Mumbai-19 India Department of Electrical Engineering Veermata Jijababai Technological Institute Mumbai-19 India

ISBN: (纸本)9781479977970

The paper considers the problem of motion synchronization in multi-agent systems while maintaining a specific inter-agent formation pattern. The agents are modelled as double integrator dynamical systems with motion reference generated by a virtual leader referred to as exosystem. The main essence of this paper lies in integration of output regulation techniques with complex Laplacian based consensus algorithm to synchronize motion of the multi-agent system. The stability properties of designed controller for overall dynamics of multi-agent network are discussed. Simulation results are also presented to illustrate the effectiveness of the proposed control law.

关键词： considers problem motion

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Extreme-ANFIS: A novel learning approach for inverse model control of nonlinear dynamical systems

Extreme-ANFIS: A novel learning approach for inverse model c...

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International Conference on Industrial Instrumentation and Control (ICIC)

作者： Pushpak Jagtap Pranoti Raut G. N. Pillai Faruk Kazi N.M. Singh Center of Excellence - Complex and Nonlinear Dynamical Systems Veermata Jijabai Technological Institute Mumbai Department of Electrical Engineering Indian Institute of Technology Roorkee India Electrical Engineering Department Veermata Jijabai Technological Institute Mumbai

The paper proposes a novel, simple and faster learning approach named `Extreme-ANFIS' to tune premise and consequent parameters of Takagi-Sugeno Fuzzy Inference System (TS-FIS). Further the Extreme-ANFIS is used to design inverse model of nonlinear dynamical system. In this paper, the product concentration of non-isothermal Continuous Stirred Tank Reactor (CSTR) is controlled effectively by controlling inlet reactant temperature by using the Extreme-ANFIS based inverse model control technique. The effectiveness of proposed controller is verified by simulating it in MATLAB and comparing with conventional PID control.

关键词： Mathematical model Adaptation models Neural networks Fuzzy logic Chemical reactors Computational modeling Training

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