Xinhan Huang

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In this paper, the problem of delay-dependent stability for a class of networked control systems (NCSs) with uncertainties and time-varying delays is investigated. A continuous time model for a class of multi-input and multi-output (MIMO) NCSs with many independent sensors and actuators is proposed. Based on descriptor system approach combined with linear(More)
In this paper, the robust fault detection filter design problem for linear time invariant (LTI) systems with unknown inputs and modeling uncertainties is studied. The basic idea of our study is to formulate the robust fault detection filter design as a H∞ model-matching problem. A solution of the optimal problem is then presented via a linear matrix(More)
Conventional Photometric Stereo (PS) techniques are usually based on the assumption that the light sources are assumed sufficiently far from the object that all incoming light can be modeled using parallel rays. Meanwhile, for near-field lighting conditions the light sources are close to the object so the parallel ray model cannot be used. To determine the(More)
This paper deals with the problem of delay-independent robust stability of networked control systems (NCSs) with structured uncertainties and multiple state time-delays. Modeling of a class of multi-input and multi-output (MIMO) NCSs with multiple delays and uncertainties by new methods are proposed. Based on Lyapunov stability theories combined with linear(More)
Multi-wavelet is an extension from wavelet theory, and it has several particular advantages over scalar wavelet on image processing since the multi-wavelet analysis can offer a more precise method for image analysis than wavelet multi-resolution analysis can do. In this paper, two new image fusion algorithms are presented: One is based on image(More)
This paper applies a novel adaptive feedforward compensation (AFC) algorithm for runout cancellation on voice coil motor (VCM) actuator servo system. The parametric update laws of this adaptive algorithm can be precisely deduced. The AFC controller can attenuate selectively the intended harmonic runout without amplifying other harmonics. The testing results(More)