JORDAN Mario Alberto
congresos y reuniones científicas
Continuous-Time Nonlinear Identification for a Case Study: Conical Pendulum with Uncertain Measures
PADIN, Z.; BAMBILL, H.; JORDAN, MARIO
Congreso; IEEE International Midwest Symposium on Circuits and Systems (MWSCAS 2001); 2001
IEEE, Circuits and System Society
In this paper a conical pendulum with moving support and variable length is identified during induced oscillations. It is assumed that the pendulum angle and azimuth are measured with systematic errors. These are consider parameters for the identification.Due to the nonalgebraic nature of the nonlinear model structure, the unceratinties leads to a nonconvex estimation. A suitable algorithm based on the property of the invatiance of the global minimum is developed for that purposed. The procedure uses a polynomial approximation of the cost functional that causes a first incoming in a convex zone where the minimum lies. For a final refinement of the global minimum a gradient-based law is applied. A study of the persistent excitation is also presented. Was not included in CD-ROM Paper Accepted Nro. 326 (Copy available), Ohio, USA, 2001.