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IEEE International Conference on Vehicular Electronics and Safety (ICVES)

作者： Ogitsu, Takeki Ikegami, Tokunosuke Kato, Shin Mizoguchi, Hiroshi Tokyo Univ Sci Dept Mech Engn Chiba Japan Field Syst Res Grp Natl Inst Adv Ind Sci & Technol Ibaraki Japan

ISBN: (纸本)9781479918829

This study provides a new mode of transport in urban areas inhabited by many elderly people. In some of these areas, public transport systems are inadequate and parking spaces for private cars are in short supply. In addition, the decline of shopping malls around these areas makes life inconvenient for the inhabitants. Here we introduce a car-sharing service of vehicle-following personal vehicles along streets in residential areas inhabited by elderly people. This study achieves a vehicle control function with high reliability, high accuracy, and ease of handling by a measuring device that uses a draw wire encoder. First, we consider background issues pertaining to transports and residential streets in Japan. Next, we give an introduction on vehicle-following technologies we have developed. We then describe a measuring device that uses a draw wire encoder for the proposed vehicle-following service, as well as the underlying control algorithms implemented by the measuring device. Finally, we report the results of experiments conducted on small electric vehicles (EVs). The results verify that the proposed device and vehicle-following control algorithms enable vehicles to drive with vehicle-to-vehicle distance errors of approximately +/- 10 cm.

关键词： vehicle measuring instruments computer algorithms ENCODER PARKING SPACE aged person transport ELECTRIC WIRE Cars shopping mall residential areas Street

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STABILIZATION OF ACROBOT AFTER LANDING 17th

STABILIZATION OF ACROBOT AFTER LANDING

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17th International Conference on Climbing and Walking Robots (CLAWAR)

作者： Kozlowski, Krzysztof Michalski, Mateusz Parulski, Pawel Poznan Univ Tech Chair Control & Syst Engn PL-61138 Poznan Poland

ISBN: (纸本)9789814623346

The aim of this paper is to verify whether the well known control algorithms for double inverted pendulum could be used for stabilization of the Acrobot after impact. Both methods utilize feedback linearization techniques. The first control algorithm is based on careful selection of output function that leads to a proper relative degree of the system. The second approach makes use of system's kinetic symmetry property with backstepping procedure.

关键词： computer algorithms cage set linearization techniques INVERTED PENDULUM Backstepping

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Path Following Control Algorithm for Planar Holonomic N-Link Manipulators Using Non-Singular Path Parametrization 19

Path Following Control Algorithm for Planar Holonomic N-Link...

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

作者： Plaskonka, Joanna Wroclaw Univ Technol Chair Cybernet & Robot PL-50370 Wroclaw Poland

ISBN: (纸本)9781479950812

In the paper a description of a planar holonomic N-link manipulator relative to a path is presented. The path parametrization method is based on a non-orthogonal projection of the robot on the path and the Serret-Frenet frame moving along a curve. The new control algorithm for N-link manipulators is proposed. The effectiveness of the algorithm for a planar three-link manipulator is examined by computer simulations.

关键词： manipulators path planning Serret-Frenet frame computer simulations nonorthogonal projection nonsingular path parametrization path following control algorithm planar holonomic N-link manipulator planar three-link manipulator Equations Manipulator dynamics Mathematical model Robot kinematics Transmission line matrix methods transmission line matrix methods Manipulators manipulator dynamics Robot kinematics computer Simulation Path planning Mathematical Model Byways computer algorithms holonomic

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Optimizing Set Point Control of the MCSGP Process 13

Optimizing Set Point Control of the MCSGP Process

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13th European Control Conference (ECC)

作者： Behrens, Malte Khobkhun, Phawitphorn Potschka, Andreas Engell, Sebastian TU Dortmund Univ Dept BCI Proc Dynam & Operat Grp Dortmund Germany Heidelberg Univ Interdisciplinary Ctr Sci Comp D-69115 Heidelberg Germany

ISBN: (纸本)9783952426913

We present a case study for iterative set point optimizing control, the control of a ternary chromatographic separation process for which structural and parametric model uncertainty must be taken into account. The process considered here is a continuous switched chromatographic multicolumn separation process with high purity and yield requirements. In each iteration, the optimal cyclic steady state of a system that is governed by partial differential equations is required. This is done efficiently by a new one-shot optimization method, that employs a two-grid Newton-Picard approach. We demonstrate the control algorithm by a simulation study with experimentally determined isotherm parameters under realistic plant-model mismatch conditions. Despite the large model uncertainty, the plant is driven to its true optimum, increasing the productivity of the plant to 99.8% of its maximum while decreasing the solvent consumption by about 37 %.

关键词： Adaptation models Adsorption Mathematical model Optimization Process control Switches Process control Switches Mathematical Model set point control Adaptation models Adsorption model uncertainty computer algorithms

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Modeling and real-time control of an industrial air multi-compressor system

Modeling and real-time control of an industrial air multi-co...

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9th IEEE International Symposium on Industrial Embedded Systems (SIES)

作者： Facchinetti, Tullio Benetti, Guido Della Vedova, Marco L. Univ Pavia Dept Elect Comp & Biomed Engn I-27100 Pavia Italy

ISBN: (纸本)9781479940226

This paper presents a control algorithm for an air multi-compressor system. The goal is to achieve adequate performance in terms of air pressure regulation by properly coordinating a set of compressors driven by fixed speed motors. The coordination is required to impose an upper bound to the activation frequency of electric drives. A multi-compressor system is intended to be a viable alternative to compressor systems based on Variable Speed Drives (VSD) operated by inverters, which suffer of several technical and economic drawbacks. The control strategy is based on the evaluation of the timing associated to activations/deactivations of each compressor. Such evaluation is determined by the values of physical variables that determine the system behavior, including air flows, pressures and temperature. The periodic measurement of the actual pressure is performed to dynamically adjust the estimation of relevant time instants in case of variations of working conditions. The algorithm takes into account the dynamics of the air pressure, as well as timing constraints on the minimum period between two subsequent activations of each compressor. The effectiveness of the multi-compressor solution is evaluated by simulation.

关键词： Atmospheric modeling Compressors Delays Equations Mathematical model Pressure measurement Switches Compressors Compressor system Atmospheric models Pressure measurement Switches Mathematical Model Real time control Air Pressure minimum period system behavior delay control strategy air computer algorithms

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Reduction of wind turbine structural loads caused by rotor asymmetries 13

Reduction of wind turbine structural loads caused by rotor a...

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13th European Control Conference (ECC)

作者： Petrovic, Vlaho Jelavic, Mate Baotic, Mato Univ Zagreb Fac Elect Engn & Computat Zagreb 41000 Croatia Koncar Elect Engn Inst Zagreb Croatia

ISBN: (纸本)9783952426913

To enable further growth of wind turbine dimensions and rated power, it is essential to decrease structural loads that wind turbines experience. Therefore a great portion of research is focused on control algorithms for reduction of structural loads, but typically wind turbine rotor is considered to be perfectly symmetrical, and therefore such control algorithms cannot reduce structural loads caused by rotor asymmetries. In this paper, the reduction of wind turbine structural loads caused by rotor asymmetries is discussed. To this aim, suitable transformation of structural loads and control algorithm based on such transformation are proposed. Simulation results show that proposed control algorithm is capable of reducing structural loads caused by rotor asymmetries.

关键词： Blades Delays Harmonic analysis Oscillators Rotors Standards Wind turbines Structural loads Wind Energy Conversion Systems computer algorithms Rotors Blades Fourier analysis Oscillators delay

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Neural Networks and Neuroscience-Inspired computer Vision

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CURRENT BIOLOGY 2014年第18期24卷 R921-R929页

作者： Cox, David Daniel Dean, Thomas Harvard Univ Ctr Brain Sci Cambridge MA 02138 USA Harvard Univ Dept Mol & Cellular Biol Cambridge MA 02138 USA Harvard Univ Sch Engn & Appl Sci Cambridge MA 02138 USA Google Res Mountain View CA 94043 USA Brown Univ Dept Comp Sci Providence RI USA

Brains are, at a fundamental level, biological computing machines. They transform a torrent of complex and ambiguous sensory information into coherent thought and action, allowing an organism to perceive and model its environment, synthesize and make decisions from disparate streams of information, and adapt to a changing environment. Against this backdrop, it is perhaps not surprising that computer science, the science of building artificial computational systems, has long looked to biology for inspiration. However, while the opportunities for cross-pollination between neuroscience and computer science are great, the road to achieving brain-like algorithms has been long and rocky. Here, we review the historical connections between neuroscience and computer science, and we look forward to a new era of potential collaboration, enabled by recent rapid advances in both biologically-inspired computer vision and in experimental neuroscience methods. In particular, we explore where neuroscience-inspired algorithms have succeeded, where they still fail, and we identify areas where deeper connections are likely to be fruitful.

关键词： NEURAL circuitry NEUROSCIENCES computer vision DECISION making ARTIFICIAL intelligence computer science computer algorithms

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Interleaved Luo Converter for The Residential PV Grid Connected Systems

Interleaved Luo Converter for The Residential PV Grid Connec...

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Asian Control Conference

作者： Mary Helna Muttath P. Baburaj Depatment of Electrical and Electronics Engineering Govt. College of Engineering

ISBN: (纸本)9781479978632

The new research trend in the residential solar generation systems, is to employ the parallel connected PV configuration rather than the series-connected configuration to satisfy the safety requirements and to make full use of the PV generated power. A novel interleaved Luo converter is proposed for the high voltage gain DC-DC conversion which integrates the merits of interleaved topologies and switched capacitor based topologies. The Super Lift (SL) Luo converter is becoming very popular in the DC-DC conversion processes due to high voltage gain, and simple circuitry. By using the interleaving technique, the input current ripple and output voltage ripple of the elementary SL Luo converter is reduced. Hence the proposed topology is suitable for the DC-DC conversion at the output of parallel/series-parallel connected PV modules, since the low ripple current at the output of PV module will improve the life span of the same. Incremental conductance based MPPT control algorithm, along with a PI controller is implemented in this paper. The disadvantage of the interleaved topology is the large component count. However, component ratings of the Interleaved SL Luo converter are reduced to half of that of a SL Luo converter. Hence the cost of the interleaved circuit can be justified.

关键词： DC conversion Converters Pv modules safety requirements Polydnaviridae PI control Voltage gain Longevity Life span capacitor switching computer algorithms Domestic architecture

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Flame extinguishment by cooperation of two aerial extinguishers

Flame extinguishment by cooperation of two aerial extinguish...

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IEEE/SICE International Symposium on System Integration

作者： Yasushi Iwatani Hiroyuki Torikai Department of Science and Technology Hirosaki University

ISBN: (纸本)9781467372435

Fire extinguishment approaches with inert gas such as carbon dioxide (CO_2) or nitrogen (N_2) have several advantages compared with ones with water. On the other hand, they have low extinguishment performance and put lives at risk. To enhance the extinguishment performance and to reduce risk to life, the authors have proposed a robotic fire extinguishment approach with massive aerial extinguishers with inert gas. This paper proposes a control algorithm for multiple aerial extinguishers without any markers, while a single extinguisher with an easily extracted marker has been controlled in our previous work. This paper also demonstrates flight control of two extinguishers and flame extinguishment by cooperation with two extinguishers. The cooperative behavior in the flame extinguishment experiment is not explicitly programmed, and the two extinguishers are simply controlled by trajectory tracking using PID controllers.

关键词： EXTINGUISHERS(FIRE) Fire suppression computer algorithms Carbon Dioxide rare gases At-risk Aircraft control trajectory tracking Proportional Integral Derivative Control nitrogen fixation

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Implementation of an Asymmetric Relay Autotuner in a Sequential Control Language

Implementation of an Asymmetric Relay Autotuner in a Sequent...

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IEEE International Conference on Automation Science and Engineering

作者： Alfred Theorin Josefin Berner Department of Automatic Control Lund University

ISBN: (纸本)9781467381840

Control applications contain both logic, sequencing, and control algorithms. A holistic view of this is seldom presented in teaching and papers. One reason is the separation of communities - automation groups typically come from the Programmable Logic Controller (PLC) world while control engineers primarily come from the Distributed Control System (DCS) world. Both logic, sequencing, and control algorithms are, however, well integrated in today's control systems since DCS systems now contain logic and sequencing and PLCs now contain control algorithms. This paper shows that both logic, sequencing, and control algorithms can be integrated seamlessly in a sequential control language. The particular application considered is a PID controller with a relay autotuner. The presented autotuner implementation yields good controller parameters and is freely available.

关键词： computer algorithms sequential control Formal logic Proportional Integral Derivative Control relay Analyses, Sequence COMMAND AND CONTROL LANGUAGES Programmable logic controllers control engineering Language DC SYSTEMS Sequencing

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