The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform

Mao Wang - One of the best experts on this subject based on the ideXlab platform.

  • Self‐tuning type variable structure control method for a class of nonlinear systems
    International Journal of Robust and Nonlinear Control, 1998
    Co-Authors: Tong Heng Lee, Mao Wang
    Abstract:

    In this paper we propose a new self-tuning type variable structure control (VSC) method for a class of nonlinear dynamical systems with parametric uncertainties. The control law is designed to satisfy the sliding Mode Condition while the online parameter identification is incorporated in the control system. Necessary modifications are made for the parameter identification to avoid the singularity of control input. By virtue of sliding Mode, the proposed identification algorithm can be applied to those nonlinear systems which may not be linear in parametric space but are linear while in sliding Mode. A Model-based strategy is further introduced to estimate the uncertainty bound. The new approach attains the gain scheduling property by tuning the switching gain in accordance with the estimated system uncertainties, that is, the switching gain tends to reduce asymptotically while ensuring that the sliding Mode Condition is maintained.

  • Self-tuning type variable structure control method for a class of nonlinear systems
    Proceedings. 1996 IEEE International Workshop on Variable Structure Systems. - VSS'96 -, 1
    Co-Authors: Tong Heng Lee, Mao Wang
    Abstract:

    In this paper we propose a new self-tuning type variable structure control (VSC) method for a class of nonlinear dynamical systems with parametric uncertainties. The control law is designed to satisfy the sliding Mode Condition while the online parameter identification is incorporated in the control system. Necessary modifications are made for the parameter identification to avoid the singularity of control input. By virtue of sliding Mode, the proposed identification algorithm can be applied to those nonlinear systems which may not be linear in parametric space but are linear while in sliding Mode. A Model-based strategy is further introduced to estimate the uncertainty bound. The new approach attains the gain scheduling property by tuning the switching gain in accordance with the estimated system uncertainties, that is, the switching gain tends to reduce asymptotically while ensuring that the sliding Mode Condition is maintained.

Xie Jian-ying - One of the best experts on this subject based on the ideXlab platform.

Krassimir Panajotov - One of the best experts on this subject based on the ideXlab platform.

O. Powell - One of the best experts on this subject based on the ideXlab platform.

  • Single-Mode Condition for silicon rib waveguides
    Journal of Lightwave Technology, 2002
    Co-Authors: O. Powell
    Abstract:

    The geometrical Conditions required for single-Mode propagation in large cross-section silicon-on-insulator (SOI) waveguides were investigated using the beam propagation method (BPM). The cases of both vertical-walled and sloping-walled (trapezoidal) rib structures were considered. In the trapezoidal case some approximate methods were compared with the simulated results. Expressions for the single-Mode Condition for both types of waveguide were defined.

Zhang Chang - One of the best experts on this subject based on the ideXlab platform.