优化预测性维护和任务分配,以提高机队在不确定性条件下的准备能力
Ryan O'Neil1, Abdelhakim Khatab1,2, Claver Diallo1
1Department of Industrial Engineering, Dalhousie University, 5269 Morris st. PO Box 15000, Halifax, Nova Scotia B3H-4R2 Canada.
概括
本研究介绍了一种先进的车队选择性维护 (FSM) 模型,用于优化资产运营. 它解决了任务优先级和资源限制问题,在不确定性条件下提高了舰队的性能.
科学领域:
- 运营研究 运营研究
- 可靠性工程可靠性工程
- 资产管理资产管理.
背景情况:
- 工业机队在运营休息期间需要维护.
- 现有的舰队选择性维护 (FSM) 模型缺乏现实性,因为它们假定相同的任务并忽视资源限制.
研究的目的:
- 开发一种新的FSM模型,共同优化系统任务分配,维护级别和维修任务.
- 通过分析模型和深度神经网络 (DNN) 整合混合可靠性评估.
- 通过机会受限制的优化来解决维护和中断持续时间的不确定性.
主要方法:
- 一种混合可靠性评估,将分析模型和DNN结合起来,用于部件健康监测.
- 一个机会受限的优化模型,以确保在休息时间内完成维护.
- 使用样本平均近似 (SAA) 和条件风险值 (CVaR) 近似,重新构建优化模型.
主要成果:
- 拟议的FSM模型有效地整合了各种组件可靠性数据.
- 受到机会限制的优化确保在持续时间不确定的情况下及时完成维护.
- 该案例研究证明了该模型在军事飞机维护中的准确性和实际价值.
结论:
- 新的FSM框架为车队维护计划提供了更现实的,更有效的方法.
- 分配,维护和维修任务的联合优化显著提高了车队的性能.
- 混合可靠性评估和不确定性处理对于现实应用至关重要.
相关概念视频
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
100
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
100
Load-frequency control
256
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
256
Multimachine Stability
229
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:
229
Distributed Loads: Problem Solving
731
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...
731
Uncertainty: Overview
977
In analytical chemistry, we often perform repetitive measurements to detect and minimize inaccuracies caused by both determinate and indeterminate errors. Despite the cares we take, the presence of random errors means that repeated measurements almost never have exactly the same magnitude. The collective difference between these measurements - observed values - and the estimated or expected value is called uncertainty. Uncertainty is conventionally written after the estimated or expected value.
977
Decision Making: P-value Method
5.7K
The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim is also stated. These statements can act as null and alternative hypotheses: a null hypothesis would be a neutral statement while the alternative hypothesis can...
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim is also stated. These statements can act as null and alternative hypotheses: a null hypothesis would be a neutral statement while the alternative hypothesis can...
5.7K


