Approximate bang-bang control assisted rapid switching feedback stabilization for stochastic qubit systems

Gan Li ◽  
Yanan Liu ◽  
Sen Kuang ◽  
Chengdi Xiang
2017 ◽  
Vol 15 (3) ◽  
pp. 206-218 ◽  
Xiaqing Sun ◽  
Sen Kuang ◽  
Yanan Liu ◽  
Juan Zhou ◽  
Shuang Cong

O. E. Bradfute

Electron microscopy is frequently used in preliminary diagnosis of plant virus diseases by surveying negatively stained preparations of crude extracts of leaf samples. A major limitation of this method is the time required to survey grids when the concentration of virus particles (VPs) is low. A rapid survey of grids for VPs is reported here; the method employs a low magnification, out-of-focus Search Mode similar to that used for low dose electron microscopy of radiation sensitive specimens. A higher magnification, in-focus Confirm Mode is used to photograph or confirm the detection of VPs. Setting up the Search Mode by obtaining an out-of-focus image of the specimen in diffraction (K. H. Downing and W. Chiu, private communications) and pre-aligning the image in Search Mode with the image in Confirm Mode facilitates rapid switching between Modes.

2006 ◽  
Vol 11 (2) ◽  
pp. 137-148 ◽  
A. Benabdallah ◽  
M. A. Hammami

In this paper, we address the problem of output feedback stabilization for a class of uncertain dynamical systems. An asymptotically stabilizing controller is proposed under the assumption that the nominal system is absolutely stable.

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