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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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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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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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Multiple Bodies, Actants, and a Composition Classroom: Actor-Network Theory in Practice

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RHETORIC REVIEW 2014年第4期33卷 421-438页

作者： Holmes, Steven George Mason Univ Dept English Fairfax VA 22030 USA

James Berlin's pedagogy employs generalized heuristics grounded in human agency and social-epistemic critique to enable political awareness. By contrast, actor-network theory (ANT) does not explain the composition of reality through pre-fixed heuristics but instead seeks to describe the unique composition of political objects through symmetrical accounts of human and nonhuman agency. ANT-as-pedagogy can be productively applied in the classroom to realize students' capacities as moralists who comprehend the rhetorical difference between explanation (Berlin) and description (ANT) with regard to their political agencies as writers.

关键词： ACTOR-network theory SOCIOLOGY -- Methodology HEURISTIC algorithms computer algorithms HEURISTIC programming

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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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Study on Signal Processing of Electro-Hydraulic Actuator for Iterative Control Algorithm 10

Study on Signal Processing of Electro-Hydraulic Actuator for...

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IEEE/ASME 10th International Conference on Mechatronic and Embedded Systems and Applications (MESA)

作者： Baek, Seung-Guk Choi, Jong Yoon Lee, Kyeong Ha Moon, Hyungpil Choi, Hyouk Ryeol Koo, Ja Choon Sungkyunkwan Univ Sch Mech Engn Suwon 440746 South Korea

ISBN: (纸本)9781479922802

Iterative Control is used to obtain high tracking performance on vibration testing equipments. It is important to find proper frequency response function for Iterative Control because it has information of real system. Signal processing to make proper frequency response function for Iterative Control has been investigated. Electrohydraulic actuated system was considered as theoretical model. Main performance parameters were found by considering the convergence of Iterative Control Algorithm. Signal processing to make proper frequency response function for Iterative Control was suggested on the basis of previous described works. The usefulness of suggested signal processing method was verified by testing the Iterative Control algorithm on 1 axle vibration testing equipment.

关键词： frequency response function electro-hydraulic actuator computer algorithms signal processing Iterative visual tracking characteristic parameter

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Low-Speed Cooperative Car-Following Fuzzy Controller for Cybernetic Transport Systems 17

Low-Speed Cooperative Car-Following Fuzzy Controller for Cyb...

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IEEE 17th International Conference on Intelligent Transportation Systems (ITSC)

作者： Milanes, Vicente Marouf, Mohamed Perez, Joshue Gonzalez, David Nashashibi, Fawzi Inria Paris Rocquencourt Robot & Intelligent Transportat Syst RITS Team F-78153 Le Chesnay France

ISBN: (纸本)9781479960781

This paper describes the development of a Cooperative Adaptive Cruise Control (CACC) for the future urban transportation system at low-speed. The control algorithm was evaluated using two Cybecars as prototype vehicles. A longitudinal response model for the vehicles was developed to design the CACC system. The control algorithm was implemented on a fuzzy logic-based controller that has been tuned to minimize a cost function in order to get a trade-off between a proper car-following gap error and the smoothness of the control signal. The controller was firstly tested in simulation using the developed model. Then, the CACC was implemented in two Cybecars to validate the controller performance in real scenarios.

关键词： adaptive control fuzzy control road traffic control road vehicles CACC Cybecars car-following gap error control algorithm control signal controller performance cooperative adaptive cruise control cooperative car-following fuzzy controller cost function cybernetic transport systems fuzzy logic-based controller longitudinal response model prototype vehicle urban transportation system Acceleration Algorithm design and analysis Cost function Mathematical model Prototypes Stability analysis Vehicles Cost functions transport system computer algorithms Prototype Vehicle Algorithm design and analysis vehicle road vehicles Fuzzy control adaptive control Stability analysis PROTOTYPE acceleration Mathematical Model Controllers Land transportation

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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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Designing Adaptive Lighting Control algorithms for Smart Buildings and Homes

Designing Adaptive Lighting Control Algorithms for Smart Bui...

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IEEE 11th International Conference on Networking, Sensing and Control (ICNSC)

作者： Wang, Yuan Dasgupta, Partha Arizona State Univ Tempe AZ 85281 USA

ISBN: (纸本)9781479931064

Artificial lighting is often the main lighting provision for workplaces. This paper describes algorithms for optimizing lighting control in large (smart) buildings that are extensible to smart home use. Systems that provide uniform lighting, under varying outdoor light levels, at occupied locations turns out to be a hard problem. We present methods that work as generic control algorithms and are not preprogrammed for a particular building. Our system uses wireless sensors and wired actuators for the lighting control. But the system does not know about locations and correlations between lights and sensors. The model shows that the control problem is NP-Hard. A heuristic algorithm is proposed and validated to solve the problem to compute approximate optimal solution.

关键词： intelligent buildings lighting controls Homes artificial light computer algorithms EXPANDABLE optimal solution Light

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Influence of Software Effects on the Susceptibility of Ethernet Connections

Influence of Software Effects on the Susceptibility of Ether...

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IEEE International Symposium on Electromagnetic Compatibility (EMC)

作者： Kreitlow, Matthias Garbe, Heyno Sabath, Frank NBC Protect Bundeswehr Res Inst Protect Technol D-29633 Munster Germany Inst Elect Engn & Measurement Technol D-30167 Hannover Germany

ISBN: (纸本)9781479955459

It is widely known that Ethernet networks are susceptible to high-power electromagnetics (HPEM). Even with electromagnetic disturbance levels below the threshold, at which a hardware failure of components can be observed, there are impacts on the data transmission between two computers. A typical effect on the application level is a decrease of the maximum data rate between two endpoints with a higher field strength until the transmission completely breaks down. To quantify the effect of electromagnetic disturbances it is necessary to distinguish between effects which are software-related due to control algorithms and applications behaviour on higher protocol layers, and hardware -related effects caused by physical interaction between the network components and the disturbance. This paper shows the results of a new measurement method compared to classical tests using a FTP data transmission.

关键词： data communication electromagnetic fields electromagnetic interference local area networks protocols Ethernet networks HPEM control algorithms data transmission electromagnetic disturbance hardware failure hardware-related effects high-power electromagnetics measurement method network components network disturbance physical interaction protocol layers software-related effects computers Data communication Electromagnetic compatibility Electromagnetics Protocols Servers Software Electromagnetic interference data communication Ethernet networks Electromagnetic fields protocol layer Network components Hardware Failure data transmission protocols computer algorithms Electromagnetism Local Area Networks electromagnetic compatibility computer software Servers

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