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

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

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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 ...

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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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Experimental evaluation of a fault-tolerant plug-and-play controller 13

Experimental evaluation of a fault-tolerant plug-and-play co...

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13th European Control Conference (ECC)

作者： Bodenburg, Sven Niemann, Simon Lunze, Jan Ruhr Univ Bochum Inst Automat & Comp Control D-44780 Bochum Germany

ISBN: (纸本)9783952426913

Networked control systems use the network connection to exchange data and signals. In plug-and-play control the communication of control algorithms and system models over a shared network is concerned with the intention to adjust control laws automatically after the occurrence of changes in the plant structure or in the control objectives. An application scenario is the break down of a sensor or an actuator as studied in fault-tolerant control. This paper investigates such a situation in the sense of plug-and-play control. The diagnostic task and reconfiguration task are separated and assigned to predestined computational units: an onboard unit allocated at the plant with access to the plant signal and a remote offboard unit concerning the expensive computation. The onboard diagnostic unit detects and identifies the failure at runtime and transmits the model of the faulty plant to the offboard reconfiguration unit over a shared network. Using the reconfiguration strategy of the virtual sensor and virtual actuator the reconfigured controller is automatically designed and transmitted to the control station to replace the original control algorithm. In the whole sequence no human interaction is necessary. The main contributions of this paper are the combination of a diagnosis method and a reconfiguration method to perform a completely automated sequence, the implementation of this concept and the evaluation by experiments on a thermal fluid process.

关键词： Actuators Fault tolerance Fault tolerant systems Heating MATLAB Observers Fault tolerance Fault tolerant systems actuators MATLAB Plug and play Observers plant signals computer algorithms network connection control station Reconfiguration plant structures Controllers Heating

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Static Inertial Parameter Identification for Humanoid Robots Using a Torque-Free Support 14

Static Inertial Parameter Identification for Humanoid Robots...

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14th IEEE-RAS International Conference on Humanoid Robots (Humanoids)

作者： Mayr, Johannes Gattringer, Hubert Johannes Kepler Univ Linz Inst Robot Linz Austria

ISBN: (纸本)9781479971749

For the control of robots, like bipedal robots, an accurate system model with the corresponding inertial parameters can enhance the performance of the control algorithms significantly. This paper presents a convenient method for identification of the static inertial parameters with minimal sensor effort. Next to the identification method itself an approach for the calculation of optimal exciting identification poses is presented. The method is used successfully to identify the static inertial parameters of a full-size humanoid robot.

关键词： humanoid robots legged locomotion motion control optimal control bipedal robot humanoid robot optimal exciting identification poses static inertial parameter identification torque-free support Genetic algorithms Humanoid robots Joints Robot sensing systems Torque Vectors Humanoid robots Manipulator sensing systems Biped locomotion inertial parameter Motor Control computer algorithms Torque Genetic Algorithm (GA) Optimal control Joints Joints

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Game playing

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WILEY INTERDISCIPLINARY REVIEWS-COGNITIVE SCIENCE 2014年第2期5卷 193-205页

作者： Rosin, Christopher D. Par Comp Inc San Diego CA USA

Game playing has been a core domain of artificial intelligence research since the beginnings of the field. Game playing provides clearly defined arenas within which computational approaches can be readily compared to human expertise through head-to-head competition and other benchmarks. Game playing research has identified several simple core algorithms that provide successful foundations, with development focused on the challenges of defeating human experts in specific games. Key developments include minimax search in chess, machine learning from self-play in backgammon, and Monte Carlo tree search in Go. These approaches have generalized successfully to additional games. While computers have surpassed human expertise in a wide variety of games, open challenges remain and research focuses on identifying and developing new successful algorithmic foundations. WIREs Cogn Sci 2014, 5:193-205. doi: 10.1002/wcs.1278 Conflict of interest: The author has declared no conflicts of interest for this article. For further resources related to this article, please visit the .

关键词： ARTIFICIAL intelligence GAME theory COMPUTATIONAL complexity COMPARATIVE studies computer algorithms MONTE Carlo method

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Fatigue damage reduction for flexible structure through active control

Fatigue damage reduction for flexible structure through acti...

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IEEE Conference on Control Applications (CCA)

作者： Cazzulani, Gabriele Ripamonti, Francesco Resta, Ferruccio Politecn Milan Dept Mech Engn Milan Italy

ISBN: (纸本)9781479974092

In recent years, the large development of light and flexible structures led to a wide interest about techniques for active vibration suppression. Indeed, these structures are typically characterized by low damping and, consequently, by a significant amplification of vibrations, especially when the structure is forced close to its natural frequencies. System vibrations result in high stresses of the material, which may strongly reduce the structure lifetime. For this reason, all the techniques able to reduce vibrations and stresses are of great interest. Most of the researches focused on the vibration suppression, assuming that the fatigue reduction would be a direct consequence. Anyway, even if in many applications it can be regarded as true, there are some cases in which vibration reduction does not automatically imply an improvement in terms of fatigue life. For this reason, this paper proposes a new approach, able to take into account the fatigue phenomemon directly in the definition of the control algorithm. The proposed approach is firstly introduced from a theoretical point of view, describing the control algorithm and how it deals with the fatigue damaging. Then, the control logic is tested both numerically and experimentally on a plate instrumented with accelerometers, strain gauges and piezoelectric actuators. A comparison between the proposed solution and state of the art control techniques is proposed and critically analyzed to demonstrate how the fatigue life of the structure can be improved.

关键词： Control systems Equations Fatigue Mathematical model Strain Stress Vibrations Vibration Flexible structures Fatigue control systems vibration suppression computer algorithms Mathematical Model Fatigue life active control Stress (mechanics) absorption of shock control logic

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Can computers make the grade in writing exams?

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PHI DELTA KAPPAN 2014年第3期96卷 26-31页

作者： Hadi-Tabassum, Samina Dominican Univ Bilingual ESL Program River Forest IL 60305 USA

The article discusses the use of computer algorithms to grade writing exams developed for the Common Core State Standards. Topics discussed include the use of computers by students to take writing exams, the use of latent semantic analysis (LSA) to grade student writing, and the issues, such as polysemy, that are inherent with the use of algorithms in grading.

关键词： computer algorithms GRADING & marking (Students) SCHOOL prose COMMON Core State Standards (Education) computer assisted testing (Education) LATENT semantic analysis POLYSEMY

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