基于数字双胞胎和WHO-WPHM的高速列车变速箱的可靠性评估
Tengfei Wang1, Yun Chen1, Siying Li1
1School of Civil Engineering and Transportation, Beihua University, Jilin 132013, China.
Sensors (Basel, Switzerland)
|October 29, 2025
概括
本研究引入了一种数字双胞胎方法,以提高高速列车变速箱的可靠性. 集成野生马优化器和韦布尔比例危险模型提供了准确的操作安全评估.
科学领域:
- 机械工程 机械工程
- 可靠性工程可靠性工程
- 计算科学 计算科学
背景情况:
- 变速箱的可靠性对于高速列车的安全性和运营连续性至关重要.
- 准确的监测数据和可靠的评估方法对于评估变速箱性能至关重要.
- 现有的方法可能缺乏实时操作监控所需的精度和速度.
研究的目的:
- 开发和验证一种新的数字双胞胎 (DT) 框架,用于评估高速列车变速箱的可靠性.
- 将先进的优化算法与可靠性模型集成在一起,以增强预测能力.
- 提高变速箱状况监测和安全评估的准确性和效率.
主要方法:
- 使用Ansys Twin Builder建立了高速列车变速箱的数字双胞胎框架.
- 部署虚拟传感器,从关键轮对组件中收集振动加速数据.
- 整合了野生马优化器 (WHO) 与韦布尔比例危险模型 (WPHM) 进行参数估计和优化.
- 利用局部触点空间对齐 (LTSA) 来减少WPHM输入共变量的维度.
主要成果:
- 实现了2.35 × 10^4的模拟加速系数,显著超过传统方法.
- 优化算法的代数减少了62.9% (vs. 鱼优化算法) 和48.1% (vs. 哈里斯霍克斯优化).
- 网络部署的DT模型在13秒内交付,显示了高效率.
- 可靠性评估结果显示,与轮对实际运行里程有很强的一致性.
结论:
- 拟议的数字双胞胎框架,结合WHO和WPHM,提供了一种有效和可行的方法来评估高速列车变速箱的可靠性.
- 这种方法增强了预测性维护能力,有助于提高运营安全和效率.
- 这项研究证实了先进的计算方法在解决铁路行业复杂的工程挑战方面的潜力.
相关概念视频
01:09Transmission Shafts: Problem Solving
484
Designing a solid shaft that transmits power from a motor to a machine tool involves a series of calculations to ensure the shaft can withstand the stresses applied by bending moments and torques. First, calculate the torque exerted on the gear, considering the power transmitted by the shaft and its rotational speed. Following this, compute the tangential forces acting on the gears, which directly relate to the torque and the gear radius.
Next, use bending moment diagrams for the shaft to...
Next, use bending moment diagrams for the shaft to...
484
01:16Design of Transmission Shafts
732
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by reconfiguring the...
732
01:15Design of Transmission Shafts - Stress Analysis
706
Designing a transmission shaft requires a thorough understanding of the stresses induced by bending moments and torques, especially in systems where power is transferred through gears. These forces create force-couple systems at the centers of the shaft's cross-sections, leading to both transverse and torsional loading. Although shearing stresses from transverse loads are typically smaller than those from torques and are often overlooked, the significant normal stresses from these loads...
706
01:25Multimachine Stability
539
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:
539
01:15Thin-Walled Hollow Shafts
527
In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution of...
527
01:14Mechanical Efficiency of Real Machines
1.2K
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
However, in reality, no machine can be truly ideal, and all of them experience some...
1.2K