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. 7 (1994), No. 4

  • Identification of Continuous Time-Delay Systems Using the Genetic Algorithm

    pp. 113-121

    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.7.113

    This paper proposes a novel method of identification of continuous time-delay systems from sampled input-output data. By the aid of a digital pre-filter, an approximated discrete-time estimation model is first derived, in which the system parameters remain in their original form and the time-delay need not be multiples of the sampling period. Then an identification method combining the genetic algorithm (GA) with the common linear least squares (LS) method or the instrumental variable (IV) method is proposed. That is, the time-delay is selected by the GA, and the system parameters are estimated by the LS or IV method. Furthermore, the proposed method is extended to the case of multi-input multi-output systems where the time-delays in the individual input channels may differ each other. Simulation results show that our method yields consistent estimates even in the presence of high measurement noises.
  • A Modeling and Fuzzy Control of Ceramic Kiln

    pp. 122-133

    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.7.122

    A ceramic kiln is a two-input/two-output system where temperature and atmosphere (hydrogen or carbon monoxide) inner it are controlled by fuel and a damper. The ceramic kiln has a huge heat capacity and is a nonlinear system because the combustion characteristics in the kiln is always changing due to interference of temperature and atmosphere. Experts, therefore, have been controlling it based on their experimental knowledge.
    In this paper, we try to control the ceramic kiln by fuzzy control. First, we make a kiln model based on the combustion theory. Next, we choose membership functions of the fuzzy controller while simulating the fuzzy control of the ceramic kiln using the kiln model and fuzzy production rules given by experts. Finally, we make experiments on the fuzzy control for a real ceramic kiln in Shigaraki, Shiga Prefecture, and show some experiment results.
  • Adaptive Multi-Step Learning Control for Time-Varying Linear Systems

    pp. 134-141

    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.7.134

    In this paper, the adaptive multi-step learning control for continuous-time linear system is studied. Input function uk+1 (t) is calculated from the triplets (uk, ek, ek) and (uk-1, ek-1, ek-1) where ek is tracking error of k-th trial. The weighting coefficients of the triplets are determined adaptively. The convergence of the control law is proved by means of evaluation of the norm of tracking error. Moreover, the learning control is applied to the tracking problem of two-link robot manipulator.
  • Parametric Absolute Stability of Lur'e Systems

    pp. 142-149

    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.7.142

    The concept of parametric absolute stability of Lur'e systems is defined. It provides a mathematical framework for solving the joint problem of feasibility and stability of equilibrium states of Lur'e systems with uncertain parameters and sectorial bounded nonlinearities. This problem arises since stability may be disturbed by the change of equilibrium states which is caused by the parameter variation. In this paper, we consider a single-input single-output Lur'e system, and present Popov-type sufficient conditions for parametric absolute stability. Although the condition contains the parameters, it can be tested by computing the value sets or a family of Popov plots.
  • A Simple Estimate for Matrix Stability Hypercube

    pp. 150-151

    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.7.150

Article Access Ranking

21 Sep. (Last 30 Days)

  1. Formation and Evolution of Inclusions in High Chromium Steel ISIJ International Vol.61(2021), No.9
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Effect of Heating Rate on Carbothermic Reduction and Melting Behavior of Iron Ore-Coal Composite Pellets ISIJ International Advance Publication
  4. Preface to the Special Issue on “Recent Progress in Inclusion/ Precipitate Engineering” ISIJ International Vol.61(2021), No.9
  5. Evaluation of Interfacial Energy between Molten Fe and Fe-18%Cr-9%Ni Alloy and Non-Metallic Inclusion-Type Oxides ISIJ International Vol.61(2021), No.9
  6. Production and Technology of Iron and Steel in Japan during 2020 ISIJ International Vol.61(2021), No.6
  7. Modeling of Wall Shear Stress Induced Inclusion Transport and Removal in Multi-Strand Tundish ISIJ International Vol.61(2021), No.9
  8. Three-dimensional Quantitative Evaluation of the Lamellar Curvature in Pearlitic Steel Based on an Orientation Analysis of Cementite ISIJ International Advance Publication
  9. Analysis of Air-Mist Cooling Effect for Coil in the Electromagnetic Induction Controlled Automated Steel Teeming System ISIJ International Vol.61(2021), No.9
  10. Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry ISIJ International Vol.61(2021), No.9

Search Phrase Ranking

21 Sep. (Last 30 Days)

  1. blast furnace
  2. inconel 600
  3. blast furnace productivity
  4. miyamoto goro
  5. nozzle clogging
  6. b2o3 mold flux
  7. blue carbon
  8. investigation of arc behavior and temperature distribution corresponding to electrode and phase configurations in a multiphase ac arc
  9. ohno
  10. sei kimura