永久磁铁同步电机的异常检测基于改进的DWT-CNN多电流融合
Minqi Tang1, Lihua Liang1, Haitao Zheng1
1College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
Sensors (Basel, Switzerland)
|April 27, 2024
概括
这项研究引入了一种新的异常检测方法,用于使用离散波纹转换卷积神经网络 (DW-CNN) 和长短期记忆 (LSTM) 的永磁同步电机 (PMSM). 这种方法有效地融合了当前的信号特征,用于增强电机故障检测.
科学领域:
- 电气工程 电气工程
- 机器学习 机器学习
- 信号处理 信号处理
背景情况:
- 永磁同步电机 (PMSM) 对设备可靠性和公共安全至关重要.
- 传统的卷积神经网络 (CNN) 模型难以从PMSM当前数据中提取特征.
- 准确的异常检测对于防止关键机械故障至关重要.
研究的目的:
- 为PMSM开发一个先进的异常检测系统.
- 克服现有的CNN模型在处理PMSM电流信号方面的局限性.
- 提高由PMSMs驱动的公共设备的可靠性和安全性.
主要方法:
- 提出了一种新的离散波纹转换卷积神经网络 (DW-CNN) 方法.
- 结合离散波纹变换 (DWT) 用于高/低频分离与CNN.
- 集成了混合注意力机制和重量更新的长短期记忆 (LSTM) 功能融合和异常检测.
主要成果:
- 拟议的DW-CNN-LSTM方法在融合多电流信号特征方面表现出强大的能力.
- 对电机轴承和PMSM定位器故障数据集的实验验证证证了该方法的有效性.
- 该方法成功地检测到PMSM操作数据中的异常.
结论:
- 开发的DW-CNN-LSTM异常检测技术为PMSM监测提供了一个强大的解决方案.
- 这种方法通过有效地融合复杂的电流信号特征来提高识别故障的能力.
- 这些发现有助于提高关键基础设施的安全性和可靠性.
相关概念视频
Force On A Current Loop In A Magnetic Field
3.2K
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process,...
3.2K
Torque On A Current Loop In A Magnetic Field
4.0K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
4.0K
Magnetic Field Of A Current Loop
4.5K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
4.5K
Magnetic Force On Current-Carrying Wires: Example
1.5K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
1.5K
Magnetic Force Between Two Parallel Currents
3.5K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and the vector product of the length vector along the current element and the field due to the first conductor. According to the...
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and the vector product of the length vector along the current element and the field due to the first conductor. According to the...
3.5K
Magnetic Field Due to Two Straight Wires
2.5K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.5K


