Integrated sensor-system monitoring, fault detection and performance recovery

正常磨损、设计缺陷和外部影响和干扰，如过载，会导致许多系统逐渐退化，从而导致性能下降和/或灾难性故障。对一个系统进行满意的控制和监视，需要关于系统及其各个组成部分和运行特性的准确信息。全面的资料往往不容易得到，特别是在系统运作已经改变的情况下。此外，由于设备/机械制造商通常没有预见到需要确定和提供此类信息，因此他们没有提供将来提取此类数据的内置方法。在过去的几年中，申请人继续研究在线系统/参数识别，故障检测，隔离和恢复。这些工作的结果有助于维护设备和系统在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”来源往往不被区分。这确实是一个非常可能的场景，在一个系统的故障，使一个相关的传感器退役。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，则可能导致采取不适当但“假定的纠正”操作。当传感器发生故障时，可能没有必要使系统接地，而当系统发生故障时，可能需要采取紧急措施。提出的研究旨在发展正确定位断层源的方法。

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.