time-variant
4.Considering the time-variant mesh stiffness, the calculated results demonstrated the change of tooth root bending stress in one engagement period.
5.In this paper,the problems of robust stability analysis for time-invariant and time-variant uncertain descriptor systems are discussed based on the matrix norm,matrix measure and Lyapunov approach,the sufficient conditions of impulse-free robustness and robustly admissible are derived,the numerical example is given.
6.Abstract: The ever increasing number and power of polluting loads (non-linear, time-variant loads and so on) connected to the electric power network cause a significant distortion in the line voltage and line current.
7.Abstract: The time-variant reliability analysis of ship hull girders subjected to the deg r adations of fatigue and corrosion is quantitatively carried out in this paper.Th e analytical formulations are derived and simple program is compiled.As a case s tudy,the time-variant reliability of a VLCC tank is calculated.It shows that th e degradation effects of fatigue and corrosion are very important for the load-c a pacity calculation of thsip hull girders.After the second special inspection (10 years),the detailed inspection should be done in order to guarantee the safety of ship navigation.
8.Abstract: This paper presents a new adaptive fuzzy control scheme and its application to speed servo control for a quadruped robot.The scheme solves two problems successfully which are the large range of speed set points and the time-variant gain of the controlled object.Experiment study shows that the new scheme improves dynamic characteristic and robustness of the control system efficiently.
9.CO DIMENSION 1 HOPF BIFURCATION AND ITS STABILITY IN A VAN DER POL TIME DELAY SYSTEM WITH TWO VARIANT PARAMETERS
10.An on-line minimum-variance estimator was developed for thrust acceleration applied to orbit transfer using discrete-time radar measurements.The mass-flow-rate of propellant was selected as a state variant,which was estimated by employing an integral state model and EKF filter.The variation equations for measurement vector to mass-flow-rate have been established to linearize the discrete-time measurement equations.The algorithm has applied successfully to maneuver process in commanding satellite into Geo-stationary orbit.The results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process.
