instantaneous frequency measurement是什么意思 instantaneous frequency measurement在线中文翻译

instantaneous frequency measurement

instantaneous frequency measurement 双语例句

  1. In this paper Ⅰ successfully applied these methods to fault diagnosis, and presenting some new innovative machinery fault diagnosis method; First Ⅰ present a new gear wornout fault diagnosis method, this method use the vibration signal's time-frequency attribute and instantaneous phase undulation to accurately detect gear's fault, and by comparing with the traditional frequency domain analysis method, this method reveals that many nonlinear and nonstationary characteristic exist in gear's vibration, this tell us that if we use frequency domain analysis method without pay attention to the signal's characteristic, we could get wrong diagnostic result; Then Ⅰ present a new bearing fault diagnosis method, this method use ATVFD and Hilbert transform to do envelop demodulation, Ⅰ analyze the envelop with time-frequency method and find out that this method is more accurate then traditional method.Ⅰ also explain that the modulation of the fault to the carrier wave may also be non-stationary and nonlinear; Finally Ⅰ present a cylinder pressure measurement method of diesel engine by means of vibration, cylinder pressure is an important parameter of diesel engine fault diagnosis, the pressure measuring is simplified a lot by this method, Ⅰ also use the ATVFD and time-frequency analysis to realize it.
    本文中将上述理论方法成功地应用到故障诊断中去,提出了几点创新性的诊断方法;提出了一种齿轮磨损故障诊断的新方法,该方法利用振动信号能量的时频域分布特征与瞬时相位波动特征可以进行精确的齿轮故障诊断,并通过与传统的频域诊断方法的比较,揭示出齿轮振动中存在的明显的非线性与非平稳特征,说明了不加选择地利用频域分析方法进行齿轮故障诊断很可能会得到错误的诊断结果;提出了一种轴承故障诊断的新方法,该方法利用ATVFD分解与Hilbert变换进行包络解调,并对解调得到的包络信号进行时频域分析,可以实现更加准确轴承故障诊断,说明了故障对载波信号的调制往往也是非平稳与非线性的;提出了一种利用振动信号进行柴油机汽缸内压力检测的新方法,柴油机汽缸压力的变化是柴油机故障诊断的重要参数,利用振动方法可大大简化汽缸压力的检测过程,该方法也是综合利用ATVFD分解与时频域分析方法实现的。
  2. Target full polarization instantaneous measurement based on orthogonal frequency division
    基于正交频率分集的目标全极化瞬时测量方法
  3. The composition of the system was given, and key technologies such as time synchronization with high accuracy, small frequency agile radar transmitter, wide band instantaneous frequency measurement receiver and real-time processing system were also discussed.
    给出了系统的组成,讨论了方案中高精度时间同步、小型捷变频脉冲雷达发射机、宽带瞬时测频接收机和实时处理系统等关键技术。
  4. Modern instantaneous frequency measurement receiver and its applications for advanced radar countermeasure systems
    瞬时测频接收机及其在先进对抗系统中的应用
  5. With two light source generating optical carrier, the modulated carrier signal is processed by microwave photonic filter, completing instantaneous frequency measurement, but it is complex, high cost and a small range of bandwidth.
    利用两个光源产生光载波,采用光子滤波器对调制载波信号进行处理,可以实现瞬时测频,但结构复杂,成本较高,测频带宽窄。
  6. LFM Signal Reception in Channelized Instantaneous Frequency Measurement Receiver
    信道化IFM接收机中LFM信号的接收
  7. Design of Software for the DSP of Instantaneous Frequency Measurement System with Hilbert-Huang Transform
    基于希尔伯特&黄瞬时测频的DSP软件设计
  8. WDM Driver Development of Instantaneous Frequency Measurement Card Based on PCI Bus
    基于PCI总线的实时测频卡WDM驱动程序设计
  9. This paper proposed the theory of digital counting instantaneous frequency measurement and analyzed the error of frequency measurement.
    文章介绍了一种用直接数字计数测量瞬时频率的原理,并进行了测频误差分析。
  10. In modern electronic warfare, instantaneous frequency measurement (IFM) is a crucial technology.
    在现代化的电子战情况下,瞬时频率测量(IFM)是一项十分关键的技术。
  11. The instantaneous frequency measurement (IFM) emulating schemes, RF delay line emulating schemes and their critical technologies are emphatically discussed. To improve frequency precision by improving frequency correcting method is critical technology of IFM emulating schemes.
    着重讨论了瞬时测频仿真方案和射频延迟线仿真方案的工程实现和关键技术,指出改进频率校准方法提高频率引导精度是瞬时测频仿真方案的关键技术;

instantaneous frequency measurement

中文翻译
1
瞬时测频