基于FFMEC,FTA和BN的货运电梯系统的可靠性分析.
Jie Yu1, Juyong Zhang2, Chunguang Li3
1School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China. 2760783206@qq.com.
Scientific reports
|July 2, 2025
概括
这项研究提高了大型货运电梯 (LTFE) 在织行业的可靠性,采用了FFMECA,FTA和BN的综合方法. 该方法成功识别了关键故障模式,导致系统可靠性超过94%.
科学领域:
- 工程 工程师 工程师 工程师
- 工业系统 工业系统
- 风险管理 风险管理
背景情况:
- 对于大型货运电梯 (LTFE) 等复杂系统而言,可靠性设计至关重要.
- 织品染色和印刷行业需要LTFE的高运行可靠性.
- 现有的可靠性分析方法可能无法完全捕捉LTFE故障模式的复杂性.
研究的目的:
- 为织工业中LTFE提出一个全面的可靠性分析方法.
- 识别和优先考虑LTFE中高风险故障模式.
- 为了提高LTFE的整体系统可靠性.
主要方法:
- 模糊的故障模式,效果和关键性分析 (FFMECA) 使用模糊的分析层次过程 (FAHP) 和重法.
- 断层树分析 (FTA) 用于建模故障原因.
- 贝叶斯网络 (BN) 用于从FTA进行推断分析和映射.
- 计算模糊风险优先次数 (FRPN) 来排名故障模式.
主要成果:
- 确定了六种高风险故障模式,包括门结构故障,拖拉机故障和电磁制动故障.
- 综合FFMECA,FTA和BN方法有效地确定了关键故障点.
- 拟议的改进措施进行了模拟和验证.
结论:
- 开发的综合分析方法显著提高了LTFE的可靠性.
- 系统可靠性达到94%以上,符合设计要求.
- 这种方法为提高复杂工业系统的安全性和效率提供了强大的框架.
相关概念视频
Frames: Problem Solving II
292
Consider a hydraulic hoist supporting a load of 1 kN. Assuming a simplified schematic representation of this frame structure, the force acting on BD and BF members can be determined.
292
Frames: Problem Solving I
602
Consider a jib crane with an external load suspended from the pulley. The dimensions of the crane members are shown in the figure. A systematic analysis of the frame structure is required to determine the reaction forces at the pin joints, assuming that the pulleys are frictionless.
602
Machines: Problem Solving II
376
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
376
Multimachine Stability
234
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:
234
Three Force Member
1.2K
A rigid body subjected to three forces acting at three points is known as a three-force member. These forces must have concurrent lines of action, except for parallel forces, where the lines of action are parallel.
For example, consider a dumpster connected to a pin support at point A and a pin attached to a hydraulic cylinder at point B.
For example, consider a dumpster connected to a pin support at point A and a pin attached to a hydraulic cylinder at point B.
1.2K
Method of Sections
774
Consider a truss structure, as shown in the figure.
774


