Analysis results indicate that it can reflect better the basic characteristics of the original system than usually eigenvalue truncation criterion and exactly preserve the lower frequencies and mode shapes of the original system.

Journal of Air Force Engineering University

This paper expounds the problem on eigenvalue reduced order for flexible umltibody system model, and derives the eigenvalue modal reduced order oriterion and calculation steps based on Riccati iteration algorithm in accordance with attitude dynamics of flexible spacecraft system.Analysis results indicate that it can reflect better the basic characteristics of the original system than usually eigenvalue truncation criterion and exactly preserve the lower frequencies and mode shapes of the original system.Dynamic response curves of reduced order model accord better with original system.

Analysis results indicate that it can reflect better the basic characteristics of the original system than usually eigenvalue truncation criterion and exactly preserve the lower frequencies and mode shapes of the original system.

Eigenvalue Reduced-order Method for Dynamic Model of Flexible Multibody System