Mode tracking issues in structural optimization

Mode Tracking Issues in Structural Optimization

Within the context of optimization of the structural dynamics properties of finite element models, methodology is developed for the tracking of eigenpairs through changes in the structural eigenvalue problem. The goal is to eliminate difficulties caused by "mode switching" (i.e., frequency crossing). Out of several candidate methods, two methods for mode tracking are successful. The first metho...

IMPORTANT ISSUES IN MULTIPLE RESPONSE OPTIMIZATION

There have been many productive methods developed so far for optimization of multiple response surface (MRS) problems. This paper tends to review the most seminal approaches in MRS and discuss the strength and weakness of each of the approaches through existing aspects in MRS. A numerical example is included to compare results by different methods. Finally some of the prominent areas for future...

Optimization of the VERITAS Orbit-Mode Tracking Pattern

Issues in Target Tracking

In this lecture we discuss a number of concerns and items of interest that related to the tracking of targets in clutter. We begin with a discussion of performance evaluation methods. The familiar CRLB is shown to be adjusted in a straightforward way when deterministic trajectories are estimated in the presence of measurement-origin uncertainty (false alarms and missed detections); indeed, the ...

Sliding Mode Control For Heartbeat Electrocardiogram Tracking Problem

In this paper, we have exploited the first-order sliding mode control method to track the ECG data of the human heart by three different nonlinear control laws. In order to lessen the intrinsic chattering of the classic sliding mode control system, smooth function approximations of the control input, by means of the hyperbolic tangent and the saturation function, were used. The fast Fourier tra...