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    • 1. 发明申请
    • Sinusoidal modulated signal rectification tool using various oscillator systems
    • 正弦调制信号整流工具采用各种振荡器系统
    • US20080169801A1
    • 2008-07-17
    • US11653852
    • 2007-01-17
    • Alexei PetchenevJohn W. GrantOlga Malakhova
    • Alexei PetchenevJohn W. GrantOlga Malakhova
    • G01R23/02G01R23/16G06F17/00
    • G01P3/48G01D5/2448
    • A sinusoidal modulated signal and noise are applied to a system consisting of two oscillators of the so-called General Type, which can be, but are not limited to, the Van der Pol type, Rotator type, Tracking Force type, Linear type, or any other type of oscillator. The two oscillators in the system can also be of different types. The General Type oscillators are tuned for specific frequencies of the incoming sinusoidal modulated signal. The process of adjusting of oscillators to an incoming signal is known as Dynamic Synchronization. During the transitional period, because the noise is random, the noise pushes the frequencies of the General Type oscillators in opposite directions over time and thus self-eliminates its impact on such oscillators. The resulting signal is much less noisy, i.e., rectified, so that the sinusoidal modulated signal can be further evaluated by, for example, extracting and further analyzing its spectral peaks.
    • 正弦调制信号和噪声被施加到由所谓的通用型的两个振荡器组成的系统,该振荡器可以是但不限于范德波尔型,旋转器型,跟踪力型,线性型或 任何其他类型的振荡器。 系统中的两个振荡器也可以是不同的类型。 通用型振荡器针对输入正弦调制信号的特定频率进行调谐。 将振荡器调整为输入信号的过程称为动态同步(Dynamic Synchronization)。 在过渡期间,由于噪声是随机的,所以随着时间的推移噪声推动了普通型振荡器的频率相反,从而自动消除了对这种振荡器的影响。 所得到的信号的噪声要小得多,即被整流,从而可以通过例如提取和进一步分析其频谱峰值来进一步评估正弦调制信号。
    • 2. 发明授权
    • Frequency rectification tool for shorter waveforms
    • 用于更短波形的频率整流工具
    • US07064556B2
    • 2006-06-20
    • US10838459
    • 2004-05-04
    • Alexei PetchenevOlga MalakhovaJohn W. GrantNathan B. Littrell
    • Alexei PetchenevOlga MalakhovaJohn W. GrantNathan B. Littrell
    • G01R29/26
    • G01R31/343G01R19/0053
    • A method of detecting a signal (S) of interest contained within a waveform (F) comprised of a plurality of signals within a frequency spectrum, as well as random noise. After first detecting the waveform, a determination is made as to whether the duration (Td) of the waveform is sufficient for subsequent processing. If the duration is not sufficient, the waveform is concatenated with itself to produce a waveform of sufficient duration. The concatenated waveform is then processed and the results supplied as an input to an oscillator (24) operating at a nominal output frequency. The oscillator cancels the effects of noise in the waveform and the frequency of the oscillator shifts to a different frequency which is a function of the signal of interest. The shift in output frequency of the oscillator is detected and analyzed to obtain the signal of interest. The oscillator can be either a general purpose oscillator or a Van der Pol oscillator.
    • 一种检测包含在由频谱内的多个信号组成的波形(F)内的感兴趣信号(S)以及随机噪声的方法。 在首先检测波形之后,确定波形的持续时间(Td)是否足以用于后续处理。 如果持续时间不足,则波形与其自身连接以产生足够持续时间的波形。 然后对级联波形进行处理,并将结果作为输入提供给以标称输出频率工作的振荡器(24)。 振荡器抵消了波形中噪声的影响,并且振荡器的频率转移到与感兴趣信号的函数不同的频率。 检测并分析振荡器输出频率的偏移以获得感兴趣的信号。 振荡器可以是通用振荡器或Van der Pol振荡器。
    • 3. 发明授权
    • Sinusoidal modulated signal clarification tool using various oscillator systems
    • 使用各种振荡器系统的正弦调制信号澄清工具
    • US07855545B2
    • 2010-12-21
    • US11653852
    • 2007-01-17
    • Alexei PetchenevJohn W. GrantOlga Malakhova
    • Alexei PetchenevJohn W. GrantOlga Malakhova
    • G01R23/16
    • G01P3/48G01D5/2448
    • A sinusoidal modulated signal and noise are applied to a system consisting of two oscillators of the so-called General Type, which can be, but are not limited to, the Van der Pol type, Rotator type, Tracking Force type, Linear type, or any other type of oscillator. The two oscillators in the system can also be of different types. The General Type oscillators are tuned for specific frequencies of the incoming sinusoidal modulated signal. The process of adjusting of oscillators to an incoming signal is known as Dynamic Synchronization. During the transitional period, because the noise is random, the noise pushes the frequencies of the General Type oscillators in opposite directions over time and thus self-eliminates its impact on such oscillators. The resulting signal is much less noisy, i.e., clarified, so that the sinusoidal modulated signal can be further evaluated by, for example, extracting and further analyzing its spectral peaks.
    • 正弦调制信号和噪声被施加到由所谓的通用型的两个振荡器组成的系统,该振荡器可以是但不限于范德波尔型,旋转器型,跟踪力型,线性型或 任何其他类型的振荡器。 系统中的两个振荡器也可以是不同的类型。 通用型振荡器针对输入正弦调制信号的特定频率进行调谐。 将振荡器调整为输入信号的过程称为动态同步(Dynamic Synchronization)。 在过渡期间,由于噪声是随机的,所以随着时间的推移噪声推动了普通型振荡器的频率相反,从而自动消除了对这种振荡器的影响。 所得信号的噪声要小得多,即澄清,使得正弦调制信号可以通过例如提取和进一步分析其频谱峰进一步进行评估。
    • 7. 发明申请
    • Methods and apparatus for frequency rectification
    • 频率整流方法与装置
    • US20070081583A1
    • 2007-04-12
    • US11247810
    • 2005-10-10
    • Alexei PetchenevOlga MalakhovaJohn GrantNathan LittrellCharles Hatch
    • Alexei PetchenevOlga MalakhovaJohn GrantNathan LittrellCharles Hatch
    • H04B17/00
    • G01R31/343
    • A method of monitoring the condition of a machine is provided. The method includes receiving an input complex signal from the machine wherein the input complex signal has a plurality of signal components. The plurality of signal components includes at least one signal component containing a pre-determined frequency of interest and at least one signal component containing noise. The method further includes processing the input complex signal and generating an output complex signal having a plurality of signal components The plurality of signal components includes at least one signal component containing a pre-determined frequency of interest and at least one signal component containing noise. Processing the input complex signal includes executing a fixed-step integration and processing the output complex signal to assess whether a fault exists.
    • 提供了一种监视机器状态的方法。 该方法包括从机器接收输入复信号,其中输入复信号具有多个信号分量。 多个信号分量包括至少一个包含预定频率的信号分量和至少一个包含噪声的信号分量。 该方法还包括处理输入复信号并产生具有多个信号分量的输出复信号。多个信号分量包括至少一个信号分量,其包含预定的感兴趣频率和至少一个包含噪声的信号分量。 处理输入复信号包括执行固定步骤积分并处理输出复信号以评估是否存在故障。
    • 9. 发明申请
    • Frequency rectification tool for shorter waveforms
    • 用于更短波形的频率整流工具
    • US20050248354A1
    • 2005-11-10
    • US10838459
    • 2004-05-04
    • Alexei PetchenevOlga MalakhovaJohn GrantNathan Littrell
    • Alexei PetchenevOlga MalakhovaJohn GrantNathan Littrell
    • G01R19/00G01R29/26G01R31/34G01V3/00
    • G01R31/343G01R19/0053
    • A method of detecting a signal (S) of interest contained within a waveform (F) comprised of a plurality of signals within a frequency spectrum, as well as random noise. After first detecting the waveform, a determination is made as to whether the duration (Td) of the waveform is sufficient for subsequent processing. If the duration is not sufficient, the waveform is concatenated with itself to produce a waveform of sufficient duration. The concatenated waveform is then processed and the results supplied as an input to an oscillator (24) operating at a nominal output frequency. The oscillator cancels the effects of noise in the waveform and the frequency of the oscillator shifts to a different frequency which is a function of the signal of interest. The shift in output frequency of the oscillator is detected and analyzed to obtain the signal of interest. The oscillator can be either a general purpose oscillator or a Van der Pol oscillator.
    • 一种检测包含在由频谱内的多个信号组成的波形(F)内的感兴趣信号(S)以及随机噪声的方法。 在首先检测波形之后,确定波形的持续时间(Td)是否足以用于后续处理。 如果持续时间不足,则波形与其自身连接以产生足够持续时间的波形。 然后对级联波形进行处理,并将结果作为输入提供给以标称输出频率工作的振荡器(24)。 振荡器抵消了波形中噪声的影响,并且振荡器的频率转移到与感兴趣的信号有关的不同频率。 检测并分析振荡器输出频率的偏移以获得感兴趣的信号。 振荡器可以是通用振荡器或Van der Pol振荡器。