Dynamics and Control of Smart Structures for Space Applications

点击翻译按钮获取中文摘要

Recently, smart materials have been utilized more and more extensively in space applications due to their excellent properties such as fast response, easy miniaturization and high controllability. The past two decades have seen a rapid increase in the use of smart materials in actuator design. However, the inherent nonlinearity of smart materials hinders the scope of the application and presents an interesting control challenge. In this research, we will focus on two types of smart structures: piezoceramics and shape memory alloys. We will investigate three space applications using smart structures, including (1) active vibration control of flexible spacecraft; (2) ultra-precision positioning for space instrumentation; (3) active shape control of gossamer spacecraft. We will examine several dynamics and control topics including effective active vibration controller, accurate nonlinearity modeling, nonlinear controller design, motion synchronization controller design, wrinkle prediction and effective active shape controller design, etc. The main objective of this research is to advance the dynamics and control technologies for using smart structures in space applications.