Integrated sensor-system monitoring, fault detection and performance recovery

正常磨损、设计缺陷以及外部影响和干扰(如过载)会导致许多系统逐渐恶化，从而可能导致性能下降和/或灾难性故障。对系统进行满意的控制和监测需要关于系统及其各个组件以及运行特性的准确信息。全面的信息往往不容易获得，特别是在系统运行被改变的情况下。此外，由于设备/机械制造商一般不会预见到需要确定和提供此类信息，因此他们没有提供未来提取此类数据的内置手段。在过去的几年里，申请人继续在在线系统/参数识别、故障检测、隔离和恢复方面进行研究。这些工作的结果有助于维护设备和系统处于安全和经济的运行模式。事实上，许多研究人员已经开发了许多成功的策略来检测和诊断各种工业环境中的故障和故障。然而，故障的“真正”来源往往无法区分。事实上，系统中的故障使相关传感器退役的可能性很高。每个故障或故障场景都需要不同的补救措施，如果无法区分故障的来源，可能会导致采取不适当但“理应纠正”的操作。对于传感器故障，可能不需要将系统接地，而系统中的故障可能需要采取紧急行动。拟议的研究旨在开发正确定位故障来源的方法。

Normal wear, design flaws, and external influences and disturbances, such as overload, cause gradual deterioration in many systems, which can lead to inferior performance and/or catastrophic failure. Satisfactory control and monitoring of a system requires accurate information about both the system and its individual components, and operational characteristics. Comprehensive information is often not readily available, particularly when the system is in operation has been altered. In addition, since equipment/machinery manufacturers do not generally foresee a need to determine and supply such information, they do not provide a built-in means to extract such data in the future. Over the past years the applicant has continued research in online system/parameter identification, fault detection, isolation and recovery. The result of such work helps maintain equipment and systems in safe and economical operational mode. Many successful strategies have in fact been developed by many researchers for detecting and diagnosing faults and failures in variety of industrial settings. However, the "true" source of the fault is often not distinguished. It is indeed a highly possible scenario for a fault in a system to decommission an associated sensor. Each fault or failure scenario requires a distinct remedy, and if the source of the fault is indistinguishable it can lead to an inappropriate yet "supposedly corrective" action being taken. With a sensor failure it may not be necessary to ground the system, whereas a failure in the system may call for an urgent action. The proposed research is intended to develop means of correctly locating the source of the fault.