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检索条件"主题词=Computer algorithms"

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Simplified firefly algorithm for 2D image key-points search

Simplified firefly algorithm for 2D image key-points search

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IEEE Symposium on Computational Intelligence for Human-Like Intelligence (CIHLI)

作者： Napoli, Christian Pappalardo, Giuseppe Tramontana, Emiliano Marszalek, Zbigniew Polap, Dawid Wozniak, Marcin Univ Catania Dept Math & Informat Viale A Doria 6 I-95125 Catania Italy Silesian Tech Univ Inst Math PL-44100 Gliwice Poland

ISBN: (纸本)9781479945061

In order to identify an object, human eyes firstly search the field of view for points or areas which have particular properties. These properties are used to recognise an image or an object. Then this process could be taken as a model to develop computer algorithms for images identification. This paper proposes the idea of applying the simplified firefly algorithm to search for key-areas in 2D images. For a set of input test images the proposed version of firefly algorithm has been examined. Research results are presented and discussed to show the efficiency of this evolutionary computation method.

关键词： evolutionary computation image recognition object recognition 2D image key-points search computer algorithm evolutionary computation method human eyes image identification simplified firefly algorithm Computational modeling computers Object recognition Search problems Sociology Statistics Vectors Image recognition object recognition tabu search evolutionary algorithm Sociology computational methods Computational modeling computer algorithms computers two dimentional images Lampyridae

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Identification of inertial model for oscillating system 19

Identification of inertial model for oscillating system

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19th International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： Kurek, J. Warsaw Univ Technol Inst Automat Control & Robot Warsaw Poland

ISBN: (纸本)9781479950812

There is presented a method for calculation of inertial model for an open-loop oscillating system based on the system step response. Presented method is simple and can be easily used in automatic control practice. Identified model can be applied in control algorithms more advanced than the PID controller, for instance in the predictive control.

关键词： nonlinear control systems open loop systems predictive control three-term control PID controller automatic control practice control algorithms inertial model identification open-loop oscillating system proportional-integral-derivative controller system step response Approximation methods Educational institutions Prediction algorithms Predictive control Predictive models Robots Transfer functions Predictive control Proportional Integral Derivative Control Open loop systems Three term control systems computer algorithms Prediction algorithms oscillatory system Nonlinear control systems Approximation method Educational institutions TRANSFER FUNCTIONS Prediction models Robot

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Grid Connected Energy Storage System to Profit from Net-Metering and Variable Rate Electricity 27

Grid Connected Energy Storage System to Profit from Net-Mete...

引用

IEEE 27th Canadian Conference on Electrical and computer Engineering (CCECE)

作者： Hossain, Md Shakhawat Iqbal, M. Tariq Mem Univ Newfoundland Fac Engn & Appl Sci St John NF Canada

ISBN: (纸本)9781479930999

This article analyses an application of a grid connected battery-based storage system to profit from net-metering and variable rate electricity available in some Canadian provinces. It is possible for customers to manage their energy consumption in response to energy prices variation over a day by integrating an energy storage system in a home. In the present analysis a prototype of the battery based energy storage system has been designed and implemented. A control algorithm has been proposed to investigate the impacts of different charging and discharging scenarios. The proposed control algorithm is able to control the battery energy system as required in a typical home. Sizing and cost calculations indicate that such a system can profit from variable rate electricity. The outcome of this case study can be extended and used by residents who are interested to generate profit from variable rate electricity.

关键词： Cache Memory System variable ratio computer algorithms Energy storage systems ENERGY SYSTEMS Electricity Batteries Domestic architecture grids Grid

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Repetitive Control Based Tremor Suppression using Electrical Stimulation 10

Repetitive Control Based Tremor Suppression using Electrical...

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United-Kingdom-Automatic-Control-Council (UKACC) 10th International Conference on Control (CONTROL)

作者： Copur, Engin H. Freeman, Chris T. Chu, Bing Laila, Dina S. Univ Southampton Elect & Comp Sci Southampton Hants England Univ Southampton Engn Sci Southampton Hants England

ISBN: (纸本)9781479950119

Tremor is a common, debilitating movement condition commonly occurring in neurological disorders, with invasive and pharmacological treatment methods often ineffective. Functional electrical stimulation (FES) holds potential to supress tremor, but previous control methods have proven of limited success. This paper establishes the feasibility of using repetitive control, a framework which is able to eliminate the effect of periodic disturbances by including an internal model of the oscillation within the control structure. A model of the wrist is developed and two different repetitive control algorithms are applied to suppress tremor via stimulation of wrist flexors and extensors. Experimental results are compared with filter-based methods to establish the efficacy of the proposed approach.

关键词： Tremor Electric Stimulation Repetitive Wrist computer algorithms Neurologic Disorders Control Methods Oscillations invasive species periodic disturbance

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A framework for simulation and control of hybrid energy networks

A framework for simulation and control of hybrid energy netw...

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IEEE International Energy Conference (ENERGYCON)

作者： Geysen, Davy Booij, Paul Warmer, Cor VITO Energy Technol Mol Belgium TNO Eindhoven Netherlands Warmer Smart Grids Eindhoven Netherlands

ISBN: (纸本)9781479924493

For the built environment it is envisaged that in the next decades the total annual energy demand, both thermal and electric, could be covered by renewable sources generated within the built environment. An increasing number of thermoelectric elements, such as heat pumps and thermal storage, will enable conversion from heat to electricity and vice versa. Control in this environment therefore requires an integral management of both the heat network and the electricity network. In this paper we present a simulation framework which is able to simulate and coordinate multi-commodity flows on a district level using a wide variety of appliance models, taking into account different types of business objectives (e. g. time of use tariffs, peak shaving, etc.). To manage these flows a market-based multi-commodity algorithm, for integrated coordination of electricity and heat flows, was developed and integrated in the simulation framework. The algorithm is an enhancement of the PowerMatcher concept and thus inherits its advantages such as scalability and user autonomy. An example is given to demonstrate the use of both the simulation framework and integrated control algorithm.

关键词： Electricity simulating Power grids Built environment thermoelectric element Frameworks heat heat storage heat pumps computer algorithms Time of use Energy requirements Scalability

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Range-based Dynamic Routing of Hierarchical On Chip Network Traffic 14

Range-based Dynamic Routing of Hierarchical On Chip Network ...

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ACM/IEEE International Workshop on System Level Interconnect Prediction (SLIP)

作者： Kemmerer, Julian Taskin, Baris Drexel Univ Dept Elect & Comp Engn Philadelphia PA 19104 USA

ISBN: (纸本)9781450330534

In this paper, we propose a technique for dynamically routing packets within a hierarchical network on chip (NoC). The concept of a local router range (analogous to other forms of locality awareness) determines on which hierarchy level a packet should be routed. In previous work, the degree of this locality awareness was static and uniform across the entire network. This paper shows that, using a decentralized control mechanism, a single network node can estimate the value and variation in network-wide instantaneous average throughput and delay. Utilizing this ability in a control algorithm, we evaluate the effect of dynamic locality awareness at each network node and show overall throughput: delay ratio increases up to 3.42x that of unoptimized hierarchical networks.

关键词： Delays Heuristic algorithms Network topology Routing Runtime Throughput Topology Runtime Heuristic algorithms Network topology network node Throughput Network routing topology hierarchical network delay system-on-chip Hierarchical computer algorithms Dynamic Routing traffic network telecommunication traffic

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A Game Theory-based Distributed Power Control Algorithm for Femtocells

A Game Theory-based Distributed Power Control Algorithm for ...

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8th IEEE International Conference on Advanced Networks and Telecommunication Systems - (IEEE ANTS)

作者： Shyllon, Henry A. Mohan, Seshadri Univ Arkansas Dept Syst Engn Little Rock AR 72204 USA

ISBN: (纸本)9781479958672

In this paper, we propose a novel game theoretic model to determine optimal pilot power for femtocells in a WCDMA heterogeneous network (HetNet) deployment. The proposed utility function takes proportional fairness into consideration in pilot power allocation of femto APs and accepts CPICH measurements of femtocell user equipment (FUE) with co-channel interference values as input parameters. We prove that the proposed game model is supermodular and converges to a Nash Equilibrium. Results indicate that our Distributed Power Control algorithm converges quickly and is sensitive to interference and load variations within the femtocells.

关键词： Femtocells Game theory pilot power Hunting Game animals Power control load changes computer algorithms Utility functions input parameter

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WSN-based Intelligent Visual Performance Management in Tropical Buildings

WSN-based Intelligent Visual Performance Management in Tropi...

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1st International Conference on Intelligent Green Building and Smart Grid (IGBSG)

作者： Chan, Yiu Wing Edwin Chien, Szu-Cheng Soong, Boon-Hee Tseng, King Jet Nanyang Technol Univ Sch Elect & Elect Engn Singapore 639798 Singapore Berkeley Educ Alliance Res Singapore Singapore 138602 Singapore Nanyang Technol Univ Energy Res Inst Singapore 637141 Singapore

ISBN: (纸本)9781467361217

This paper presents a prototypical implementation of WSN-based daylight-responsive lighting and shading systems control in buildings that utilizes real-time sensing. This system can control the position of window blinds and the states of the luminaires to achieve the desirable visual comfort and energy efficiency based on the weather conditions and occupant activities. We first present the system architecture. Subsequently, the prototypical implementation is demonstrated. The outcome of this effort is expected to further articulate the system functionality and control algorithm towards implementations in real-life built environments.

关键词： Performance management lighting equipment computer algorithms weather condition System control Energy efficiency Buildings Built environment visual comfort ARTICULATED Visualization

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RAPID PROTOTYPING OF MULTIVARIABLE PI REGULATORS FOR AC DRIVES USING TMS320F2812 6

RAPID PROTOTYPING OF MULTIVARIABLE PI REGULATORS FOR AC DRIV...

引用

6th European Embedded Design in Education and Research Conference (EDERC)

作者： Santececca, Marco Di Leonardo, Lino Tursini, Marco Univ Aquila Dept Ind & Informat Engn & Econ I-67100 Laquila Italy

ISBN: (纸本)9781479968435

This paper shows how a real-time simulation can be applied for rapid prototyping of an unconventional current regulator in electrical drives. The case study refers to a permanent magnet synchronous motor, with field oriented speed control algorithm arranged in the rotor fixed d-q frame. The novelty introduced in this control scheme is represented by the use of a novel PI current regulator, formerly called multivariable. This regulator has some additional features, like the capability to conduct the machine into the flux-weakening operating area. In the rapid prototyping system, based on the TMS320F2812 microcontroller, the actual motor is replaced by a proper model running on the controller, while the control algorithm is implemented as in the actual application. The case study demonstrates the simplicity of the proposed approach, leading to a sure save of time during the testing and troubleshooting action.

关键词： Computationalmodeling computerarchitecture Real-timesystems Regulators Standards Synchronousmotors Voltagecontrol Regulators rapid prototyping Permanent magnet synchronous machines computer algorithms current regulators PI regulator rapid prototype manufacturing equipment Case studies DRIVES Automobile driving Multivariable AC drive Polyimides Proportional integral additional features

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A Control Algorithm of Treadmill Speed Adaptation for Lower Extremity Rehabilitation Robot System

A Control Algorithm of Treadmill Speed Adaptation for Lower ...

引用

IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM)

作者： Li, Feng Qian, Jinwu Wu, Zhizheng JongIl, Han Shen, Linyong Shanghai Univ Sch Mechatron Engn & Automat Shanghai 200072 Peoples R China Kim Ii Sung Univ Dept Elect Automat Pyongyang 999093 South Korea

ISBN: (纸本)9781479957361

Robot-aided treadmill training is an innovative rehabilitation method for patients with locomotor dysfunctions. However, in the current rehabilitation system the treadmill speed is restricted to a constant value or adjusted by the therapist, whereas self-determined phases of accelerations and decelerations cannot be performed by the patient in an interactive and intuitive way. In order to cope with the above problems, a speed adaptive control algorithm for lower extremity rehabilitation robot system is proposed and studied. According to the characteristics that the patient's hip joint is fixed on the robot system while walking, A pull pressure sensor is used to detect a patient's movement trend and a nonlinear gain function is used to automatically set velocity transformation quantity in the treadmill speed controller. According to this principle, a set of force measuring device is designed and its feasibility is also verified by the physical prototype. The experimental results show that the proposed control algorithm is feasible and meets the requirement of the treadmill speed adaptation for Lower Extremity Rehabilitation Robot system.

关键词： Conferences Mechatronics computer algorithms Microelectromechanical devices Rehabilitation robotics gain function Treadmill Robot System Lower Extremity deceleration acceleration

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