一种基于EEMD-PSO-SVM的模拟电路故障诊断方法
Shuhan Zhao1, Xu Liang1, Ling Wang1
1College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou, 450002, China.
Heliyon
|September 30, 2024
概括
本研究介绍了一种先进的模拟电路故障诊断方法,使用集体实证模式分解 (EEMD),最大信息系数 (MIC) 和带有支持向量机 (SVM) 的粒子群优化 (PSO). 这种新的方法显著提高了复杂电子系统的诊断准确性和效率.
科学领域:
- 电气工程 电气工程
- 信号处理 信号处理
- 机器学习 机器学习
背景情况:
- 模拟电路对于电子设备的可靠性和安全性至关重要.
- 传统的故障诊断方法与非线性,非静止信号和参数选择作斗争.
- 低诊断准确度和模型复杂性阻碍了有效的模拟电路故障检测.
研究的目的:
- 为模拟电路提出一种新的故障诊断方法.
- 解决传统方法在准确性和参数选择方面的局限性.
- 通过改进故障检测,提高电子设备的可靠性和安全性.
主要方法:
- 集体实证模式分解 (EEMD) 用于从故障信号中进行自适应的多尺度特征提取.
- 对于初始特征向量构造的皮尔森相关系数和能量值分析.
- 最大信息系数 (MIC) 算法用于优化特征选择.
- 粒子集群优化 (PSO) 调整支持矢量机 (SVM) 的超参数进行分类.
主要成果:
- 拟议的方法有效地使用EEMD提取多个规模的故障特征.
- MIC算法成功优化了特征向量,减少了复杂性.
- 优化了PSO的SVM实现了卓越的分类准确性和模型训练效率.
- 该方法克服了与波段基础函数选择相关的挑战.
结论:
- 集成的EMD-MIC-PSO-SVM方法为模拟电路故障诊断提供了一个强大的解决方案.
- 与传统技术相比,这种方法显著提高了诊断的准确性和效率.
- 拟议的方法有助于提高电子系统的安全性和可靠性.
相关概念视频
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
45
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...
45
Time-Domain Interpretation of PD Control
85
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
85
Root-Locus Method
135
A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
This system can be represented by a block...
This system can be represented by a block...
135
Response Surface Methodology
95
Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
The process of RSM involves several key steps:
The process of RSM involves several key steps:
95
Multimachine Stability
143
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:
143
Plotting and Calibrating the Root Locus
100
Root loci often diverge as system poles shift from the real axis to the complex plane. Key points in this transition are the breakaway and break-in points, indicating where the root locus leaves and reenters the real axis. The branches of the root locus form an angle of 180/n degrees with the real axis, where n is the number of branches at a breakaway or break-in point.
The maximum gain occurs at the breakaway points between open-loop poles on the real axis, while the minimum gain is...
The maximum gain occurs at the breakaway points between open-loop poles on the real axis, while the minimum gain is...
100


