High Performance, Reliable and Efficient Fluid Power: Challenges in Controls, Diagnosis and Layouts

问题陈述：飞机飞行控制执行器、水下液压机械手和非公路机械是需要液压流体动力才能操作的几个应用实例。然而，流体动力技术的发展速度还不够快，无法满足当今应用对高可靠性、高性能和高能效的要求。例如，飞机工业高度重视安全和性能，同时试图限制硬件冗余和减轻重量。与水下勘探一样，遥控液压机械手由于用户界面不佳而没有充分发挥其潜力。移动式液压设备，如挖掘机，由于控制阀的节流损失而能源效率低下。需要功能更强大、能效更高、可靠性更高的流体动力系统。 研究计划：我的研究计划旨在创造新的工具，使流体动力不仅能在当前实践中发挥最佳性能，还能为未来的应用提供可行的解决方案。我建议：(I)开发监测和控制方案，以定位和减轻降低液压系统性能的故障的影响；(Ii)开发先进技术，使操作员控制的液压机械手能够有效地与动态环境交互；以及(Iii)设计新的液压布局和功率管理方案，以有效利用移动液压中的能源供应。 研究意义：故障诊断和容错控制设计的研究，将对航空、汽车等众多工业领域中使用的液压执行机构的强化控制和故障监测产生影响。液压机械手遥操作控制的研究将对高性能机械手在野外机器人中的应用产生重要影响。对高效节能液压动力的研究将有助于设计出发动机更小、排放更少的新型非公路机械。

Problem Statement: Aircraft flight control actuators, underwater hydraulic manipulators and off-highway machines are a few application examples that need hydraulic fluid power to operate. However, fluid power technology is not advancing fast enough to meet the high level of reliability, performance and energy efficiency required in today's applications. For example, aircraft industry places a high priority on safety and performance, while attempting to limit hardware redundancy and reduce weight. Teleoperated hydraulic manipulators, as in underwater exploration, are not used to their full potential due to poor user interfaces. Mobile hydraulic equipment such as excavators, are energy inefficient due to throttling losses in control valves. There is a need for more functional, energy efficient and reliable fluid power systems. Research Program: My research program aims at creating new tools that allow fluid power to not only perform the best in current practices, but also offer viable solutions for future applications. I propose to: (i) develop monitoring and control schemes aimed at locating and alleviating the effects of faults that degrade the performance of hydraulic systems, (ii) develop advanced techniques that allow operator-controlled hydraulic manipulators to interact effectively with dynamic environments, and (iii), design new hydraulic layouts and power management schemes for efficient utilization of energy supply in mobile hydraulics. Significance: The research on fault diagnosis and fault tolerant control design, will have an impact on enhanced control and fault monitoring of fluid power actuation used in a host of industrial sectors including aviation and automotive. The research on teleoperated control of hydraulic manipulators will have an impact on high performance manipulators suitable in field robotics. The research on energy efficient fluid power will contribute to the design of new off-highway machinery with smaller engines and reduced emissions.