Transactions of the Institute of Systems, Control and Information Engineers
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 2185-811X
PRINT ISSN: 1342-5668

Transactions of the Institute of Systems, Control and Information Engineers Vol. 8 (1995), No. 2

  • Application of Neural Network in Recognition of Hand Written Hangeul

    pp. 43-51

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.8.43

    In this paper, the authors propose a recognition method of hand written Hangeul. Hangeul characters are basically classified to 6 patterns by the positions of their elements. Using these characteristics of Hangeul, the pattern of the given character is determined by its peripheral distribution and the other features, and the character is resolved into its elements which are the vowels and the consonants. They are recognized by the optimized neural network. To optimize the neural network, we discuss optimization of the neural network parameters, such as the inclination of the sigmoid function, the numbers of the input layer's units and the hidden layer's units.
    The constructed recognition system is applied to non-learning Hangeul written by some Korean peoples, and recognition rate of 97.6 % is obtained.
  • Control for Systems with Pneumatic Actuator Using Feedback Linearization

    pp. 52-60

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.8.52

    Though a pneumatic actuator is widely used in industrial applications, it is not easy to control due to the nonlinearity in the valve, compliance variation and generating force. In this paper, we apply a method of feedback linearization for a pneumatic actuator system to handle the nonlinearity. It is shown that SISO pneumatic systems with a linearizable load and an isothermal pneumatic actuator are linearizable. In addition, linearizing control is reformulated so that existing linear controllers can be used without modification. Experiments with a rubber artificial muscle actuator is carried out and the following results are obtained. (1) It is verified that linearizing control is effective for pneumatic systems. (2) The model used here is appropriate for linearizing control. (3) In the linearizing control, there exists the term of estimated value of acceleration based on the model. It is shown that by replacing the estimated value by measured value, effect of model uncertainty can be reduced.
  • Iterative Robust Controller Design Based on Experimental Data

    pp. 61-69

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.8.61

    This paper proposes an iterative design method of robust controllers which achieve robust stability as well as low sensitivity based on the experimental data. In this method we redesign the controller based on the knowledge of the plant modeling error which is obtained from the experiment. The effectiveness of the proposed method is shown by the experiment of positioning of a vibration system.
  • Analysis and Design of Magnetic Levitation Systems Considering Physical Parameter Perturbations

    pp. 70-79

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.8.70

    In this paper, we consider an analysis and design method for the robust controller of magnetic levitation systems with parameter perturbations. First, an expression of the uncertain plant is given by taking account of the physical parameter variations directly. Then, based on this result, an analysis/design method for robust controller is given in the framework of μ, where the unmodeled dynamics and the sensitivity performance are also taken into consideration. Second, the effectiveness of the proposed method is evaluated by experiments.
  • Definition of Two Kinds of the Degree of Freedom in Constraint State and Its Application to Assembly Planning

    pp. 80-90

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.8.80

    In this paper, two kinds of the Degree Of Freedom in Constraint State (CSDOF) are defined for motion of an object in contact with an immobile environment, and then application to planning of assembly tasks is discussed. The CSDOF of the first kind is defined as the number of independent directions in which the object can move keeping the current contact conditions of contact state. The CSDOF of the second kind is defined as the number of independent derections in which the object can move freely when it is allowed to break the current contact conditions and to go away from the current contact state. Then we discuss the difficulty of state transition by considering the two kinds of CSDOF as well as the Degree Of Constraint in Constraint State (CSDOC) and give a criterion function for state transitions. Lastly, we show some applications of the two kinds of CSDOF to the planning of contact state transitions in assembly operations.
  • A New Control Method for Improving the Control Characteristics of PWM Inverter

    pp. 91-93

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.8.91

  • Global Optimization by a Niche Method for Evolutionary Algorithm

    pp. 94-96

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.8.94

Article Access Ranking

16 Sep. (Last 30 Days)

  1. Micro-structure and Mechanical Properties of Induction Heating Quenched and Tempered Spring Steel Tetsu-to-Hagané Vol.73(1987), No.16
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Preface to the Special Issue on “Recent Progress of Technique Elements for New Cokemaking Process” ISIJ International Vol.59(2019), No.8
  4. Removal of Phosphorus from High-phosphorus Iron Ore with Preliminary Reduction Treatment and Physical Concentration Tetsu-to-Hagané Vol.105(2019), No.9
  5. Atomic and Effective Pair Interactions in FeC Alloy with Point Defects: A Cluster Expansion Study ISIJ International Advance Publication
  6. Quantitative Analyses of Chemical Structural Change and Gas Generation Profile of Coal upon Heating toward Gaining New Insights for Coal Pyrolysis Chemistry ISIJ International Vol.59(2019), No.8
  7. Structure Analysis of High Strength Coke Using X-ray CT ISIJ International Vol.59(2019), No.8
  8. Accuracy Evaluation of Phase-field Models for Grain Growth Simulation with Anisotropic Grain Boundary Properties ISIJ International Advance Publication
  9. Influence of Shape of Cohesive Zone on Gas Flow and Permeability in the Blast Furnace Analyzed by DEM-CFD Model ISIJ International Vol.55(2015), No.6
  10. Perspective on Progressive Development of Oxygen Blast Furnace for Energy Saving ISIJ International Vol.55(2015), No.9

Search Phrase Ranking

16 Sep. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace productivity
  4. micro-structure and mechanical properties of induction heating quenched and tempered spring steel
  5. mold
  6. tic&steel&solidification
  7. steel
  8. continuous casting
  9. ferrosilicon
  10. isij