Qing-quan Yang

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A new control approach for speed tracking and synchronization of multiple motors is developed, by incorporating an adaptive sliding mode control (ASMC) technique into a ring coupling synchronization control structure. This control approach can stabilize speed tracking of each motor and synchronize its motion with other motors' motion so that speed tracking(More)
To satisfy the manufacturing of pistons with complex profile and high accuracy demand, the shaping approach of non-cylinder piston surface with CNC turning is studied in this paper. Piston surface is divided into three characteristics of middle-convex, ellipse, and varying ellipse. And three corresponding processing algorithms are proposed. By using the(More)
The comprehensive control project for schistosomiasis was implemented in Nanjian County from 2004 to 2008. After the implementation of the control project, the infection rates of population and livestock decreased by 94.39% and 83.29% in 2008, respectively, with both infection rates less than 1%, no acute schistosomiasis cases had been found since 2005.(More)
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