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STEADY-STATE OPERATION ANALYSIS OF AN IDEAL HEAT INTEGRATED DISTILLATION COLUMN

Chinese Journal of chemical engineering 1997年第4期5卷 43-54页

作者：黄克谨钱积新战德志中岩勝高松武一郎 Institute of Industrial Process Control Zhejiang University Department of Chemical Process Automation Qingdao Institute of Chemical Engineering Department of Chemical Systems National Institute of Materials and Chemical Research Institute of Industrial Technology Kansai University

A systematic approach for the steady-state operation analysis of chemical processes is *** method affords the possibility of taking operation resilience into consideration during thestage of process *** may serve the designer as an efficient means for the initial screening ofalternative design *** ideal heat integrated distillation column(HIDiC),without any reboileror condenser attached,is studied throughout this *** has been found that among the various va-riables concerned with the ideal HIDiC,feed thermal condition appears to be the only factor exertingsignificant influences on the interaction between the top and the bottom control *** is expected when the feed thermal condition approaches *** number of stages andheat transfer rate are essential to the system ability of disturbance ***,more stagesand higher heat transfer rate ought to be ***,too many stages and higher heat transfer ratemay increase the load of the

关键词： Distillation model identification steady-state design operation resilience process control

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Identification of reduced order average linear models from nonlinear dynamic simulations

Identification of reduced order average linear models from n...

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American control Conference (ACC)

作者： W.A. Docter C. Georgakis Chemical Process Modeling and Control Research Center Department of Chemical Engineering Lehigh University Bethlehem PA USA

Presents a general methodology for the identification of average linear low order models (ALLOM) from data collected from detailed nonlinear models. While there are many methods available in the literature for identifying linear models, these methods tend to produce inaccurate and ill-conditioned models when used on nonlinear data sets. The method in this paper differs from traditional linearization methods in that it better approximates the dynamic characteristics over a wider area around the reference steady state.

关键词： Signal processing Predictive models Open loop systems chemical processes process control chemical engineering Steady-state Separation processes Thermodynamics State estimation

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Closed-Loop Identification of State Space Models using Subspace Techniques

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IFAC Proceedings Volumes 1997年第9期30卷 37-42页

作者： Hemant Jha Christos Georgakis Chemical Process Modeling and Control Research Center and Department of Chemical Engineering Lehigh University Bethlehem Pennsylvania 18015 Phone: (610)-758-5432 Fax:(610)-758-5297

The paper presents a subspace algorithm which identifies the process model from closed-loop data. The algorithm is based on the use of a closed-loop oblique projection for the direct identification of the plant dynamics. This closed-loop oblique projection is particularly useful because it eliminates the use of a minimal realization step after the identification has been performed. Similar to the open-loop algorithm, the proposed closed-loop algorithm is ideally suited for MIMO problems.

关键词： Closed-loop Identification Subspace Methods State Space Models Multivariable Systems Matrix Projection

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Genetic programming: an introduction and survey of applications

Genetic programming: an introduction and survey of applicati...

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Second International Conference On Genetic Algorithms In engineering Systems: Innovations And Applications

作者： M.-J. Willis H.G. Hiden P. Marenbach B. McKay G.A. Montague Symbolic Optimisation Research Group (SORG) Department of Chemical and Process Engineering University of Newcastle UK Institute of Control Engineering Darmstadt University of Technology Darmstadt Germany

The aim of this paper is to provide an introduction to the rapidly developing field of genetic programming (GP). Particular emphasis is placed on the application of GP to engineering problem solving. First, the basic methodology is introduced. This is followed by a review of applications in the areas of systems modelling, control, optimisation and scheduling, design and signal processing. The paper concludes by suggesting potential avenues of research.

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Self-organizing reaching operation in a simulated robot via interaction of binocular and arm movements

Self-organizing reaching operation in a simulated robot via ...

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IEEE International Workshop on Intelligent Robots and Systems (IROS)

作者： Jae-Moon Chung N. Ohnishi Bio Mimetic Control Research Center Institute for Physical and Chemical Research Nagoya Japan Department of Information Engineering School of Engineering University of Nagoya Japan

As it has been observed in the behavior research, in reaching operation of animals, the hand performs a feedforward ballistic movement during which the vision system is watching only a target without seeing the hand simultaneously. We hypothesized that, for this, the two spaces, each of which is perceived by the eyes (eye-space) and is reached by the arm motion (arm-space) respectively, are fused into one. Human babies are supposed to gradually learn the fusion by themselves from their birth. This paper describes a self-organization of reaching operation in robots. We regarded the binocular movements as the main cue in the space perception for reaching rather than visual disparity. The eye-space as well as the arm-space is directly represented by a harmony of contractions of muscles controlling their movements. The fusion of the two spaces is obtained by a learn-by-doing manner via an interaction of the binocular and the arm movements, and is stored in a memory (CMAC) as a form of experience of these muscle contractions obtained through the interaction. During the learning process it is not necessary to know structure and parameters of robot systems at all.

关键词： Robot vision systems Eyes Pediatrics Humans Animals Head Calibration Computational geometry Orbital robotics Muscles

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Self-organization of reaching operation in a robot: a bio-mimetic approach

Self-organization of reaching operation in a robot: a bio-mi...

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IEEE International Conference on Systems, Man and Cybernetics

作者： Jae-Moon Chung N. Ohnishi The Institute of Physical and Chemical Research RIKEN Bio-Mimetic Control Research Center Nagoya Japan Department of Information Engineering School of Engineering University of Nagoya Japan

Recently a new approach, called, behavior based robotics, has been proposed to overcome the difficulties of the traditional AI approach to robotics. The approach has two goals: an engineering goal of building a flexible autonomous robot, and a scientific goal of understanding human cognition. As one of behavior based robotic approaches, this paper deals with the reaching operation development in a simulated robot. Based on the importance of the contraction of muscles controlling body parts such as binocular eye balls, a neck and an arm, the reaching in the robot is modeled and learned via a learn-by-doing manner. And the learning result is stored in a memory as a form of experience of the muscle contraction, which is considered to be useful as a critical cue for space perception by the vision system and for arm reaching.

关键词： Robots Cognitive robotics Biological system modeling Muscles Artificial intelligence Humans Cognition Neck Orbital robotics Machine vision

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Recovery and refinement of motion and structure from perspectively projected optical flow

Recovery and refinement of motion and structure from perspec...

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IEEE International Conference on Intelligent engineering Systems (INES)

作者： T. Mukai N. Ohnishi Bio-Mimetic Control Research Center RIKEN Institute of Physical and Chemical Research Nagoya Japan Department of Information Engineering Faculty of Engineering University of Nagoya Nagoya Japan

Determination of the 3D motion and structure of an object from its perspectively projected 2D image is one of the most important problems in computer vision. Previous works on shape and motion from optical flow have been unsatisfactory because they require solving nonlinear simultaneous equations using iterative search. In the present paper, we propose a method for the recovery of motion and structure from perspectively projected optical flow of feature points which move rigidly. In order to simplify the computation and obtain clear perspectives, we adopt a spherical image screen and arrange equations in linear form. As a result our method does not require the solution of nonlinear simultaneous equations, but only requires the solution of linear ones. Furthermore, we propose a method for refining the solution of our linear method using a nonlinear iterative search. Simulation results of our method are also presented.

关键词： Image motion analysis Nonlinear optics Biomedical optical imaging Nonlinear equations Computer vision Iterative methods Cameras Nonlinear optical devices Motion control Optical control

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Building ears for robots: Sound localization and separation

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Artificial Life and Robotics 1997年第4期1卷 157-163页

作者： Huang, Jie Ohnishi, Noboru Sugie, Noboru Bio-Mimetic Control Research Center The Institute of Physical and Chemical Research (RIKEN) Nagoya Japan Department of Information Engineering Graduate School of Engineering Nagoya University Nagoya Japan Faculty of Science and Technology Meijo University Nagoya Japan

This paper describes our research on bio-mimetic robot audition. Among the many binaural and monaural sound localization cues in the human auditory system, the interaural time difference cue is selected as it can easily be obtained by omnidirectional microphones. We have used a three-microphone system to remove the anterior-posterior ambiguity which occurs in two-microphone (or ear) systems. The echo-avoidance model of the precedence effect is used to cope with the echoes and reverberations of real environments. We mimicked the cocktail party effect by perceptual grouping of continuous components according to the spatial information obtained by the sound localization method. A wheel-based mobile robot equipped with an auditory system was developed. The auditory system has two sound processing parts. One is a DSP-based realtime system; the other is an off-line system composed of remote computers. Experiments of localizing and separating multiple sound sources and robot navigation were conducted to demonstrate the system's ability and potential applications.

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Robust Classification of "Artificial Nose" Sensor Data by Artificial Neural Networks

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IFAC Proceedings Volumes 1997年第9期30卷 347-351页

作者： Z. Boger L. Ratton T.A. Kunt T.J. Mc Avoy R.E. Cavicchi S. Semancik Consultant Intelligent Process Control Systems PO Box 15053 Be’er-Sheva 84003 Israel Institute for System Research Department of Chemical Engineering University of Maryland College Park MD 20742 Chemical Science and Technology Laboratory National Institute of Standards and Technology Gaithersburg MD 20899

Response data from a novel micro-hotplate gas sensor were used to test a robust classification technique based on an artificial neural network. Four different compounds were identified even when the sensor signal was corrupted by high levels of noise and drift. Additional verification rules in doubtful cases were provided by examining unique binary patterns of outputs of the hidden layer neurons. Similarities to proposed models of the human nose are noted.

关键词： Micro-hotplate gas sensors Artificial neural networks Classification rules Artificial nose

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Mobile robot and sound localization

Mobile robot and sound localization

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IEEE International Workshop on Intelligent Robots and Systems (IROS)

作者： Jie Huang T. Supaongprapa I. Terakura N. Ohnishi N. Sugie Bio-Mimetic Control Research Center Institute for Physical and Chemical Research Nagoya Japan Department of Information Engineering Graduate School of Engineering University of Nagoya Nagoya Japan Faculty of Science and Technology Meijo University Nagoya Japan

This paper describes a mobile robot equipped with a real time sound localization system as well as a sonar system for obstacle detection. The sound localization method is based on a model of the precedence effect of the human auditory system to cope with echoes and reverberations. The sound localization and robot navigation experiments were conducted. The results show that the robot is capable of localizing sounding objects in a reverberant environment and approaching the objects without collisions, even when the objects were behind obstacles. Environment flexibility and error robustness of the system were discussed as well.

关键词： Mobile robots Humans Robot sensing systems Acoustic sensors Auditory system Robot vision systems Cameras chemical technology Acoustical engineering Real time systems

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