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

问题陈述：流体动力对许多领域的关键系统的运行至关重要，如飞机飞行控制执行器、用于水下勘探或核服务的遥控机械手、海上风力涡轮机和非公路车辆。然而，在目前的形式下，流体动力技术的发展速度还不够快，无法满足这些应用日益增长的可靠性、性能和效率要求。例如，对安全至关重要的飞机要求液压飞行执行器配备在线故障监测工具，并能够在出现故障时保持良好的性能。目前，这些要求是通过硬件冗余、试点干预和频繁维护来满足的。液压机械手现在需要协同工作，并与操作员一起执行涉及与非结构化环境交互的同步任务。迫切需要新的高能效液压系统，能够在保持移动液压设备的机器操作员所要求的高性能的同时进行能量再生。*研究计划：我的研究计划致力于改善流体动力系统的动力学和控制，并在当前和未来的应用中开发提高可靠性、高性能、先进的操作员界面和高效利用能源的解决方案。在接下来的五年周期中，我建议：(I)开发易于实施的容错控制和故障诊断方案，能够定位和缓解各种降低液压系统性能的故障的影响；(Ii)综合先进的控制技术，使操作员控制的液压/气动机械手能够单独或协同有效地与非结构化环境交互作用；(Iii)设计新的液压布局和功率管理方案，以有效地在移动机械中使用能量。*意义：拟议的研究将加强对流体动力系统的状况监测，并降低包括航空、汽车和现场机械在内的许多工业部门的整体停机风险。我对液压机械手控制器设计的研究将使新一代遥控多臂液压机械手能够用于水下/救援等远程任务。我对高能效移动液压的研究将使我的实验室在国际上发挥积极作用，并开发发动机更小、排放更少的现代化非公路机械。在这项研究的过程中，许多学生将利用我独特的、最先进的实验室接受流体动力系统研究的方方面面的培训。这些受训人员将成为下一代流体动力专家，他们将以许多实际方式为加拿大工业贡献他们独特的专业知识。********************

PROBLEM STATEMENT: Fluid power is essential for the operation of critical systems in many fields, like aircraft flight control actuators, teleoperated manipulators for underwater exploration or nuclear services, offshore wind turbines and off-highway vehicles. In its present form, however, fluid power technology is not advancing fast enough to meet the growing reliability, performance and efficiency demands of these applications. For example, safety-critical aircraft demand that hydraulic flight actuators be equipped with on-line fault monitoring tools and be able to maintain good performance in the presence of faults. Presently, these requirements are fulfilled through hardware redundancy, pilot intervention and frequent maintenance. Hydraulic manipulators are now required to cooperatively work together and with operators to perform synchronized tasks that involve interacting with unstructured environments. There is an urgent need for new energy efficient hydraulic systems capable of energy regeneration while maintaining the high performance demanded by machine operators of mobile hydraulic equipment.*** ***RESEARCH PROGRAM: My research program strives to improve the dynamics and control of fluid power systems and develop solutions for enhanced reliability, high performance, advanced operator interfaces, and efficient use of energy in both current and future applications. Over the next 5-year cycle, I propose to: (i) develop easy to implement fault tolerant control and fault diagnosis schemes capable of locating and alleviating the effects of various faults that degrade the performance of hydraulic systems, (ii) synthesize advanced control techniques that allow operator-controlled hydraulic/pneumatic manipulators to effectively interact, individually or cooperatively, with unstructured environments and (iii), design new hydraulic layouts and power management schemes for efficient energy use in mobile machines. ******SIGNIFICANCE: The proposed research will lead to enhanced condition monitoring of fluid power systems and lower overall risk of downtime in many industrial sectors including aviation, automotive and field machinery. My research on controller design for hydraulic manipulators will enable a new generation of teleoperated multiple-arm hydraulic manipulators that are useful for remote tasks as in underwater/rescue operations. My research on energy efficient mobile hydraulics will allow my lab to play an active role at the international level, and develop modernized off-highway machinery with smaller engines and reduced emissions. During the course of this research many students will be trained in all aspects of fluid power system research using my unique, state-of-the-art laboratory. These trainees will become the next generation of fluid power experts who will contribute their distinctive expertise to Canadian industry in many practical ways. ********************