This brief proposes a control performance-oriented fault detection (PFD) strategy for closed-loop linear time-invariant systems. Firstly, the performance index with summation of quadratic form over infinite time interval is investigated in virtue data-driven residual-centered model, which can be constructed utilizing input and output data instead system models. Then adaptive residual generator presented to update parameters model case changes caused by anomalies, serving information faulty...

A two-stage charge sensitive amplifier architecture suitable for semiconductor radiation detector with large capacitance is proposed. The integration capacitor of the first stage can be made to reduce gain sensibility without any stability problem. Each uses a self-biased MOS transistor discharge capacitor. self-bias circuit tracks process, temperature and supply voltage variations make relatively constant feedback resistor. This improves linearity uniformity multi-channel front-end...

目的 航空发动机孔探图像的损伤检测关系到航空发动机是否要非例行更换,直接影响飞机的飞行安全和利用率。现有的孔探图像损伤检测方法直接使用目标检测方法训练一个多类别损伤检测器,使用相同的参数在不同位置检测损伤。由于没有考虑同类型损伤在发动机不同区域发生概率的不同,导致现有方法的检测准确率较低。为了提高损伤检测的准确率,提出了一种自适应参数的航空发动机孔探图像损伤检测方法。方法 通过识别孔探图像所属的发动机区域,针对不同区域孔探图像设置不同的参数用于检测发动机损伤。同时为了避免单检测器上不同类型损伤之间相互干扰,采用独立检测器检测单一类型的损伤,并对误检率高的损伤进行真假识别。通过合并检测到的不同类型的损伤,得到最终的损伤检测结果。此外,为了改进水平的矩形检测框,使用分割结果产生旋转的检测框,有效地减少了框中的背景区域。结果 在13个航空发动机区域的2 654幅孔探图像上针对烧蚀、裂缝、材料丢失、涂层脱落、刻痕和凹坑等6种典型的发动机损伤进行检测实验。提出的损伤检测方法在准确率和召回率两方面分别达到了90.4%和90.7%,相较于目标检测方法YOLOv5 (you only look...

Component-oriented programming technique and object-oriented graphics mode of IDL were applied in the two-dimensional distribution visualization ocean remote sensing information according to inversion data. The methods how define an adaptive color table set a contour object attribute presented. realization containing various flags was discussed detail. example shows it can meet fast display requirement common with excellent expansibility flexibility.

Abstract Plant‐wide processes are usually characterized by large scale, multiple operating units and complicated interactions. Effective monitoring for such is imperative challenging. Traditional data‐driven methods have some limitations due to the neglect of internal relationships between units. This paper proposes a plant‐wide diagnostic framework based on multi‐variate statistical analysis causal graphical inference. Initially, optimized process decomposition performed combining...

The scarcity of resources and the accelerated process regional integration have caused complex intergovernmental cooperation to receive much attention. In order effectively produce supply public goods solve issues in economic development, it is necessary form normal governance ensure timely effective affairs. To this end, a series with bilateral multilateral coordination as basic content has been carried out among local governments region. Regional promoted cooperation, but there are also...

Fast and accurate fault detection is essential to the safe economical operation of manufacturing industry. Traditional centralized large-scale system has many limitations, such as inability guarantee timeliness. An effective method detect faults divide operating unit into subsystems implement synchronously in each subsystem. This paper proposes a special distributed for fusing mechanisms data, an optimal decomposition based on performance developed, which called performance-driven cluster...

CCUS plays a substantial role in mitigating global emissions alongside measures such as renewable energy and efficiency. Resulting from this, an opportunity is created for governments to formulate effective policies implementation, the necessary that allow achieving “well below 2°C” goal will be adopted. The report starts with study of status CCS project activities across key regions, especially China; followed review existing policy instruments support deployment R&D carbon capture,...