基于结构分析的故障检测和隔离:应用于多发动机推进集群
Renato Murata1,2, Julien Marzat1, Hélène Piet-Lahanier1
1Département Traitement de l'Information et des Systèmes (DTIS), Office National d'Études et de Recherches Aérospatiales (ONERA), Université Paris-Saclay, 6 Chem. de la Vauve aux Granges, 91120 Palaiseau, France.
Sensors (Basel, Switzerland)
|February 26, 2025
概括
使用结构分析 (SA) 的新型基于模型的故障检测和隔离 (FDI) 系统有效地识别和隔离多发动机火箭集群中的故障. 这种方法在极端运行条件下提高了系统可靠性.
科学领域:
- 航空航天工程 航空航天工程
- 控制系统工程 控制系统工程
- 系统可靠性 系统可靠性
背景情况:
- 多发动机火箭集群在极端条件下运行,使故障检测和隔离 (FDI) 变得复杂.
- 准确检测小规模断层对于任务的成功和安全至关重要.
研究的目的:
- 使用结构分析 (SA) 为多引擎集群开发基于模型的外国直接投资系统.
- 创建用于最小剩余子集选择和故障隔离的算法.
- 通过新的灵敏度指标来提高故障诊断的准确性.
主要方法:
- 结构分析 (SA) 应用于三引擎集群模型.
- 产生和选择超过16000个剩余发电机候选人.
- 开发算法,以识别最小核心值的剩余子集.
- 引入子集灵敏度指数 (SSI) 和剩余灵敏度指数 (RSI) 以进行最佳的子集选择.
- 在十种故障场景下进行性能评估的蒙特卡洛模拟.
主要成果:
- 使用最小剩余子集,生成每个故障的独特故障签名的方法.
- 基于拟议的SSI指标,确定最佳的剩余子集.
- 一个利用RSI预测活跃故障的新故障隔离算法.
- 在检测和隔离传感器和执行器故障方面,FDI系统的有效性得到了证明.
结论:
- 拟议的基于模型的FDI系统有效地解决了多发动机火箭系统故障诊断的复杂性.
- 新的灵敏度指数 (SSI,RSI) 改善了残留物选择,以实现强大的故障隔离.
- 开发的算法提供了一种可靠的方法来识别和隔离故障,提高运营安全.
相关概念视频
01:25Multimachine Stability
130
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
130
01:22Multi-input and Multi-variable systems
93
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
In the absence...
93
01:23Radial System Protection
88
Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
88
01:21Power System Three-Phase Short Circuits
72
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
72
01:24Pole and System Stability
236
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
236
01:21Distributed Loads: Problem Solving
611
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
611