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. 26 (2013), No. 6

  • Algebraic Properties of Transfer Function Matrices for Meromorphic Nonlinear Time-Varying Systems

    pp. 185-192

    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.26.185

    We define, in terms of noncommutative algebra, a transfer function matrix of a meromorphic nonlinear time-varying system, which algebraically characterizes the input-output relation of the system. Although the transfer function matrix represents the input-output relation of the system, the matrix derived from the state-space representation can depend on the state variables. By exploiting the results of noncommutative algebra, it is shown that the state variables can always be eliminated from the transfer function matrix.
  • Discrete Analysis of Obstacle Clustering by Distributed Autonomous Robots

    pp. 193-201

    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.26.193

    In this paper, we discuss some phenomena of obstacle clustering by distributed autonomous robots, in the light of space-discretization (or cellular automata) approach. This work was motivated by Swiss Robots which collect scattered obstacles into some clusters without any global information nor intelligent concentrated controller. In order to evaluate these phenomena from quantitative and statistical points of view, we propose an analysis platform using discretized state space, i.e., a hexagonal cellular space where the robots’ direction and velocity are discretized as well. We then introduce two types of local rule, Sense & Avoid rule (which resembles the Swiss Robot’s action) and Push & Turn rule and compare the results focusing on size of resulting clusters, transient/steady-state behaviors and density of obstacles and robots.
  • Multiattribute Decision Analysis based on Strict Preference Relation

    pp. 202-210

    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.26.202

    To identify multiattribute utility functions with the mutual utility independence, decision makers must specify indifference points and subjective probabilities precisely. By relaxing this exact evaluation, multiattribute value models with incomplete information have been developed. In this paper, we present a new method finding a best alternative through strict preference relations derived by questions that are not difficult to answer. For given strict preference relations, in our method alternatives satisfying the relations can be obtained by solving a mathematical programming problem with constraints representing the preference relations. If there are multiple best alternatives, we can eventually find a unique best one by solving the mathematical programming problem with additional preference constraints.
  • MIMO Discrete Time Feedback Error Learning by Means of the Desired Value of the Future

    pp. 211-220

    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.26.211

    This paper proposes an improved learning scheme for DTFEL (Discrete time feedback error learning) . Although conventional DTFEL schemes based on the gradient method are easily implemented, these schemes are applied to only SISO systems and have drawbacks that assumptions of positive realness and PE condition for the convergence of the tracking error are required. Also, a class of feedforward (FF) controller is confined to biproper case, and the prefilter parameters, which is known, have to be learned as well as the plant parameters. On the other hand, the proposed scheme can relax two assumptions above, be applied to MIMO systems and improve the problems of both degree-of-freedom and redundancy of FF controller by using the desired value of the future. The paper verifies its effectiveness in terms of simulation.
  • Feedforward Controller Tuning Method based on Online FRIT with Control Performance Evaluation

    pp. 221-223

    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.26.221

Article Access Ranking

02 Jul. (Last 30 Days)

  1. Production and Technology of Iron and Steel in Japan during 2021 ISIJ International Vol.62(2022), No.6
  2. Role of Interfacial Properties in the Evolution of Non-metallic Inclusions in Liquid Steel ISIJ International Advance Publication
  3. Preface to the Special Issue on “Frontier in Characterization of Materials and Processes for Steel Manufacturing” ISIJ International Vol.62(2022), No.5
  4. Hierarchical Deformation Heterogeneity during Lüders Band Propagation in an Fe-5Mn-0.1C Medium Mn Steel Clarified through in situ Scanning Electron Microscopy ISIJ International Advance Publication
  5. Reduction of CO2 Emissions from Blast Furnace Applying Reactive Coke Agglomerate and Hydrogen Reduction Tetsu-to-Hagané Vol.108(2022), No.6
  6. Wettability of Molten Fe–Al Alloys against Oxide Substrates with Various SiO2 Activity ISIJ International Advance Publication
  7. Application of Heat Transfer Coefficient Estimation Using Data Assimilation and a 1-D Solidification Model to 3-D Solidification Simulation ISIJ International Advance Publication
  8. Comparison of Oxidation Behavior of Various Reactive Elements in Alloys during Electroslag Remelting (ESR) Process: An Overview ISIJ International Advance Publication
  9. Nitrogen Solubility and Gas Nitriding Kinetics in Fe–Cr–Mo–C Alloy Melts under Pressurized Atmosphere ISIJ International Vol.62(2022), No.6
  10. Influence of Al2O3/SiO2 and BaO/Al2O3 Ratios on Rheological and Crystallization Behavior of CaO–BaO–Al2O3-Based Mold Slags ISIJ International Vol.62(2022), No.6

Search Phrase Ranking

02 Jul. (Last 30 Days)

  1. blast furnace
  2. inorganic coating corrosion
  3. blast furnace permeability
  4. blast furnace productivity
  5. chromate free coating
  6. si-killed spring steel
  7. steel
  8. 鉄と鋼
  9. a
  10. aaa