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. 18 (2005), No. 7

  • Probabilistic Analysis of the Size of the Membership Set in the Presence of Disturbance and Parameter Uncertainty

    pp. 237-242

    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.18.237

    The size of the membership set is analyzed probabilistically in the presence of not only bounded disturbance but also l2bounded parameter uncertainty. In particular, the diameter of the membership set is estimated with a probabilistic confidence for a finite number of samples, where the regressor is assumed to be persistently exciting and the disturbance and the parameter uncertainty are assumed to be random variables and to take their extreme values with a probability. It is also shown that the estimated diameter converges to zero as the number of samples tends to infinity.
  • Vibration Suppression Control for a Variable Length Pendulum system

    pp. 243-254

    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.18.243

    This paper proposes new stabilizing control laws for a variable length pendulum. By introducing a Lyapunov-type nonnegative function representing the magnitude of the angular oscillation of the pendulum, a stabilizing condition for the pendulum is derived that is more general than the one proposed by Yoshida et al. Two stabilizing control laws are developed on the basis of this condition. One is a control law that changes the velocity of the weight along the pendulum sinusoidally, which can reduce the load on the actuator and has good robustness properties to the nonlinearities and noise of the system. The other is a control law that performs a bang-bang control of the acceleration of the weight to approximate the optimal control law that maximizes the damping ratio of the angular oscillation of the pendulum. Furthermore, a formula is derived to evaluate the ratio between adjacent amplitudes of the oscillation for a given velocity profile of the weight, and then the ratios for the proposed control laws are evaluated. Numerical and experimental results are given to show the validity of the proposed methods.
  • Stability Analysis of Passive Dynamic Walking

    pp. 255-260

    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.18.255

    The purpose of this paper is to analyze the stability of Passive Dynamic Walking using Poincaré map of the impact point which is the state of walking robot at the collision between a swing leg and ground. Especially, in this paper, we focus on the feedback structure which exist in equations which are used to get the Poincaré map, and consider the relationship between stability of Passive Dynamic Walking and the feedback structure focusing on the relationship to LQR or output zeroing control.
  • Vibration Isolation Control for Narrow-Band Frequency Disturbances via Extended HControl

    pp. 261-267

    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.18.261

    In this paper, we consider a vibration isolation control problem in case that narrow-band fre-quency disturbances are applied to a system. The frequency shaping method byHcontrol is suitable for the problem. But we can't locate closed-loop poles in preferable region even if we use the robust stability-degree assignment method, because poles of weighting functions of the generalized system become undetectable modes. In order to overcome this problem, we use extendedHcontrol combined with the robust stability-degree assignment method. By the method, we can design a controller that provides desirable frequency shaping and preferable closed-loop poles location at the same time. The performance of the designed controller is conformed by experiments.

Article Access Ranking

18 Jan. (Last 30 Days)

  1. A Review of the Chemistry, Structure and Formation Conditions of Silico-Ferrite of Calcium and Aluminum (‘SFCA’) Phases ISIJ International Vol.58(2018), No.12
  2. Improving Blast Furnace Raceway Blockage Detection. Part 1: Classification of Blockage Events and Processing Framework ISIJ International Advance Publication
  3. Phase Transformation Behavior of Oxide Scale on Plain Carbon Steel Containing 0.4 wt.% Cr during Continuous Cooling ISIJ International Vol.58(2018), No.12
  4. Hydrogen Embrittlement Susceptibility Evaluation of Tempered Martensitic Steels Showing Different Fracture Surface Morphologies Tetsu-to-Hagané Vol.105(2019), No.1
  5. Gasification and Migration of Phosphorus from High-phosphorus Iron Ore during Carbothermal Reduction ISIJ International Vol.58(2018), No.12
  6. Effect of Coke Size on Reducing Agent Ratio (RAR) in Blast Furnace ISIJ International Vol.58(2018), No.12
  7. Improvement of Sinter Productivity by Control of Magnetite Ore Segregation in Sintering Bed ISIJ International Vol.58(2018), No.12
  8. Heat Transfer Characteristic of Slit Nozzle Impingement on High-temperature Plate Surface ISIJ International Advance Publication
  9. High Temperature Thermal Diffusivity Measurement for FeO Scale by Electrical-Optical Hybrid Pulse-Heating Method ISIJ International Vol.58(2018), No.12
  10. Effect of TiO2 and MnO on Viscosity of Blast Furnace Slag and Thermodynamic Analysis ISIJ International Vol.58(2018), No.12

Search Phrase Ranking

18 Jan. (Last 30 Days)

  1. blast furnace
  2. blast furnace productivity
  3. blast furnace permeability
  4. 鉄と鋼
  5. laser welder
  6. titanium
  7. activity feo
  8. argon steel
  9. continous annealing
  10. eaf operation