Mathematics

Scientists at China University describe research in nonlinear research

  2008 NOV 17 - (VerticalNews.com) -- "For the position tracking in DC motor with unknown bound time-varying dead zone uncertainties, a novel sliding mode adaptive controller is proposed by means of sliding mode and function approximation technique in this paper," scientists in Hefei, People's Republic of China report.

  "First, control law with an uncertain term and another compensative term is obtained using sliding mode technique, and then the function approximation technique is employed to transform the uncertain term into finite combinations of orthonormal basis functions. The concrete expressions of uncertain term and compensative term can thus be derived based on the Lyapunov design," wrote Y.Y. Liang and colleagues, China University.

  The researchers concluded: "Actual system control experiments of the sliding adaptive control proposed are given."

  Liang and colleagues published their study in Nonlinear Dynamics (Function approximation-based sliding mode adaptive control. Nonlinear Dynamics, 2008;54(3):223-230).

  For more information, contact S. Cong, China University of Science & Technology, Dept. of Automat, Hefei 230027, People's Republic of China.

  Publisher contact information for the journal Nonlinear Dynamics is: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands.

  Keywords: Nonlinear Research, China University.

  This article was prepared by VerticalNews Mathematics editors from staff and other reports. Copyright 2008, VerticalNews Mathematics via VerticalNews.com.