磁悬浮振动测试系统信号分析及振动信号的提取
发布时间：2018-08-30 12:22
【摘要】：针对绝对式振动测量方法不易实现较低振动频率的测量问题,设计了磁悬浮振动测试系统。建立了磁悬浮振动测试系统振子的动力学方程,设计了磁悬浮振动测试系统的仿真模型。分析了磁悬浮振动测试系统的固有振动频率。对外加10 Hz和30 Hz的正弦信号情况下进行了仿真及功率谱分析;利用FFT变换和反变换,将被测振动信号和系统的固有信号进行了分离。实测了磁悬浮振动测试系统无振动情况下的固有频率,其结果与仿真结果相似。理论和实验分析表明,磁悬浮振动测试系统的测量灵敏度较高,易于实现较低频率的绝对式振动信号的测量。
[Abstract]:To solve the problem that the absolute vibration measurement method is difficult to realize the measurement of lower vibration frequency, a maglev vibration measurement system is designed. The dynamic equation of the vibrator of the maglev vibration test system is established and the simulation model of the maglev vibration testing system is designed. The natural vibration frequency of the maglev vibration measurement system is analyzed. The simulation and power spectrum analysis of sinusoidal signal with 10 Hz and 30 Hz are carried out, and the vibration signal is separated from the natural signal by using FFT transform and inverse transform. The natural frequencies of the maglev vibration measurement system without vibration are measured, and the results are similar to the simulation results. Theoretical and experimental analysis show that the measurement sensitivity of the maglev vibration measurement system is high and it is easy to realize the measurement of the absolute vibration signal with lower frequency.
【作者单位】： 哈尔滨理工大学电气与电子工程学院;
【基金】：国家自然科学基金(51377037)
【分类号】：TB53
本文编号：2213059
[Abstract]:To solve the problem that the absolute vibration measurement method is difficult to realize the measurement of lower vibration frequency, a maglev vibration measurement system is designed. The dynamic equation of the vibrator of the maglev vibration test system is established and the simulation model of the maglev vibration testing system is designed. The natural vibration frequency of the maglev vibration measurement system is analyzed. The simulation and power spectrum analysis of sinusoidal signal with 10 Hz and 30 Hz are carried out, and the vibration signal is separated from the natural signal by using FFT transform and inverse transform. The natural frequencies of the maglev vibration measurement system without vibration are measured, and the results are similar to the simulation results. Theoretical and experimental analysis show that the measurement sensitivity of the maglev vibration measurement system is high and it is easy to realize the measurement of the absolute vibration signal with lower frequency.
【作者单位】： 哈尔滨理工大学电气与电子工程学院;
【基金】：国家自然科学基金(51377037)
【分类号】：TB53
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