Integrated Design Approaches for Controlled Flexible Multibody Systems
In industrial manipulators and machine tools modern lightweight designs result in low energy consumption and often allow high working speeds. However, undesired vibrations occur due to the flexibility of the bodies and the control of flexible multibody systems is often a challenging task. In order to achieve good end-effector tracking performance the mechanical design and the control design must be considered concurrently in the sense of an integrated design process. In this paper three different optimization based integrated design approaches for controlled flexible multibody systems are presented.Copyright © 2011 by ASME
Abstract This study contributes to the literature on socially responsible investing by examining the diversification potential of commodities, specifically oil, gold and clean energy together with the Brazilian Corporate Sustainability Index (ISE). Multivariate GARCH models are used to model volatility spillovers and conditional correlation in pairs of stocks containing ISE. Specifically, A-BEKK and A-DCC models with spillovers are estimated. The models’ results are used to compute and analyze the optimal weights and hedge ratios for stock portfolio holdings. The greatest benefit from diversification is obtained through the acquisition of gold and then OVX.