The Losing Stream on a Fan as a Clue to the Discovery of a Concealed Active Fault

2021 ◽  
Vol 62 (3) ◽  
pp. 156-169
Author(s):  
Shuichi MIYAJI ◽  
Ting WANG ◽  
Shuichi HASEGAWA ◽  
Minoru YAMANAKA ◽  
Atsuko NONOMURA
Keyword(s):  
Active Fault

Đặc điểm đứt gãy tích cực và hoạt động Tân kiến tạo khu vực Na Pheo - Nậm Ty

2008 ◽  
Vol 30 (1) ◽  
pp. 73-83 ◽  
Author(s):  
Văn Đức Tùng ◽  
Trần Văn Thắng
Keyword(s):  
Active Fault

Characteristics of active fault and neotectonic in Na Pheo - Nam Ty area

Active fault tolerant control of turbofan engines with actuator faults under disturbances

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Yan-Hua Ma ◽  
Xian Du ◽  
Lin-Feng Gou ◽  
Si-Xin Wen
Keyword(s):  
Active Fault ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Feedback Controller ◽  
Actuator Faults ◽  
Error Feedback ◽  
Turbofan Engine ◽  
Turbofan Engines ◽  
Interval Observer ◽  
State Error

AbstractIn this paper, an active fault-tolerant control (FTC) scheme for turbofan engines subject to simultaneous multiplicative and additive actuator faults under disturbances is proposed. First, a state error feedback controller is designed based on interval observer as the nominal controller in order to achieve the model reference rotary speed tracking control for the fault-free turbofan engine under disturbances. Subsequently, a virtual actuator based reconfiguration block is developed aiming at preserving the consistent performance in spite of the occurrence of the simultaneous multiplicative and additive actuator faults. Moreover, to improve the performance of the FTC system, the interval observer is slightly modified without reconstruction of the state error feedback controller. And a theoretical sufficiency criterion is provided to ensure the stability of the proposed active FTC system. Simulation results on a turbofan engine indicate that the proposed active FCT scheme is effective despite of the existence of actuator faults and disturbances.

scholarly journals Sensor-fault tolerance using robust MPC with set-based state estimation and active fault isolation

2016 ◽  
Vol 27 (8) ◽  
pp. 1260-1283 ◽  
Author(s):  
Feng Xu ◽  
Sorin Olaru ◽  
Vicenc Puig ◽  
Carlos Ocampo-Martinez ◽  
Silviu-Iulian Niculescu
Keyword(s):  
Fault Tolerance ◽  
State Estimation ◽  
Active Fault ◽  
Fault Isolation ◽  
Sensor Fault

Constructing the Seismograms of Future Earthquakes in Yunnan, China, Using Compressed Sensing

2020 ◽  
Vol 92 (1) ◽  
pp. 261-274
Author(s):  
Jie Zhang ◽  
Huiyu Zhu ◽  
Siwei Yu ◽  
Jianwei Ma
Keyword(s):  
Compressed Sensing ◽  
Active Fault ◽  
Regional Scale ◽  
Focal Mechanism Solution ◽  
Total Output ◽  
Detailed Knowledge ◽  
Large Dataset ◽  
Sensing Technology ◽  
Data Driven Approach ◽  
Using Data

Abstract The ability to calculate the seismogram of an earthquake at a local or regional scale is critical but challenging for many seismological studies because detailed knowledge about the 3D heterogeneities in the Earth’s subsurface, although essential, is often insufficient. Here, we present an application of compressed sensing technology that can help predict the seismograms of earthquakes at any position using data from past events randomly distributed in the same area in Jinggu County, Yunnan, China. This first data-driven approach for calculating seismograms generates a large dataset in 3D with a volume encompassing an active fault zone. The input number of earthquakes comprises only 1.27% of the total output events. We use the output data to create a database intended to find the best-matching waveform of a new event by applying an earthquake search engine, which instantly reveals the hypocenter and focal-mechanism solution.

Active fault-tolerant control scheme of aerial manipulators with actuator faults

2021 ◽  
Vol 28 (3) ◽  
pp. 771-783
Author(s):  
Ya-dong Ding ◽  
Yao-yao Wang ◽  
Su-rong Jiang ◽  
Bai Chen
Keyword(s):  
Active Fault ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Actuator Faults ◽  
Control Scheme ◽  
Active Fault Tolerant Control
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