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This paper proposes a method of feature selection and classification based on ant colony algorithm for hyperspectral remote sensing image. After all features are randomly projected on a plane, each ant stochastically selects a feature on the plane firstly, and then decides which route to be selected in terms of the criterion function among features. Whereafter the feature combination is formed. At...
Since digital implementation of repetitive controllers is simpler than analog in many industrial applications, some design criteria for a discrete-time repetitive controller to suppress periodic disturbances within a specified frequency range are presented. The small gain theorem is applied to perform the controller design for system stability. Upper and lower bounds of the discrete-time repetitive...
A new design method of the repetitive control system for linear systems with time-varying norm-bounded uncertainties is presented, which can design a low-pass filter of the repetitive controller and a stabilizing controller simultaneously in the repetitive control system. Using a Lyapunov functional for the repetitive control system, sufficient conditions are derived in terms of a linear matrix inequality...
The experiment design of PIGA test on centrifuge has been studied. Based on the identification method for high-order coefficients of PIGA (pendulous integrating gyro accelerometer) on precision centrifuge with counter-rotating platform, which can isolate the rotary movement caused by centrifuge arm so as to improve the environment of PIGA test on centrifuge, the method of the D-optimal designs is...
A delay-dependent robust stability criterion for a class of uncertain T-S fuzzy systems with time-varying delays is presented in terms of linear matrix inequalities by using the Lyapunov-Krasovskii functional method. The uncertain parameters are supposed to reside in a polytope. Furthermore, a fuzzy controller is given to stabilize the uncertain fuzzy systems .in addition, the effectiveness of the...
A classical PID controller for a certain turntable positioning system is enhanced to compensate for the Coulomb friction by incorporating an inner acceleration feedback loop. The acceleration signal is assumed to be computed based on friction estimation. In order to estimate the frictional torque, a novel nonlinear observer is developed. And its global asymptotical stability is proved as well. The...
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