讲座时间：2014年11月17日 上午9:00
　　讲座地点：新主楼E706
　　讲座题目：Spiral Pathways to the Lyapunov’s Direct Method
　　报告简介：In this seminar, we review some recent advances in nonlinear stability theory and robust adaptivecontrol that involve application of the Lyapunov direct method. Specifically, these new tools fornonlinear stability analysis involve a spiral process of transforming “weak” Lyapunov functionsinto “strict” or “partially strict” ones. These technical foundations are strongly motivated bygrowing numbers of aerospace engineering applications that are currently addressing the criticalneed for autonomous (and semi-autonomous) control systems with agile maneuvering and robustperception inside dynamic, complex and uncertain environments. In this talk, we will specificallyfocus upon spacecraft attitude control systems operating under the framework of incomplete statemeasurements. The seminar concludes with a brief discussion of broader aerospace applicationsthat include control over bandwidth constrained networks and on-orbit tunable guidance schemesfor space missions.
　　Maruthi R. Akella教授简介：Dr. MaruthiAkella holds the rank of Associate Professor in the Department of Aerospace Engineering and Engineering Mechanics at the University of Texas at Austin where he is the Myron L. Begeman Fellow in Engineering. He received his PhD in Aerospace Engineering in 1998 from Texas A&M University and prior to joining the UT Austin faculty, he was a postdoctoral fellow with the Yale University Center for Systems Science. Dr. Akella’s research program encompasses control theoretic investigations of nonlinear and coordinated systems, vision-based sensing for state estimation, and development of integrated human and autonomous multivehicle systems. He is the directing the Controls Lab for Distributed and Uncertain Systems (C-DUS Lab) at UT Austin. Dr. Akella currently serves as Associate Editor for the Journal of Guidance, Control, and Dynamics (JGCD), the Journal of the Astronautical Sciences (JAS), and the IEEE Transactions on Aerospace and Electronic Systems (T-AES). For his far-reaching contributions to the field of attitude estimation and control, Dr. Akella was awarded the prestigious Mechanics and Control of Flight Award by the American Institute of Aeronautics and Astronautics (AIAA). He is a fellow of the American Astronautical Society (AAS) and an Associate Fellow of the AIAA.