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单词 Nyquist criterion
释义

Definition of Nyquist criterion in English:

Nyquist criterion

nounˈnʌɪkwɪstˈnīkwist krīˌtirēən
Electronics
  • A criterion for determining the stability or instability of a feedback system.

    Example sentencesExamples
    • The Nyquist criterion must still be satisfied with respect to the new lower sampling frequency in order to avoid aliasing.
    • Unfortunately, the Nyquist criterion fixes a limit on the maximum frequency to be detected and as a result the Fourier analysis becomes more difficult to interpret.
    • Assuming we're dealing with low pass signals - signals where the bandwidth of interest goes from 0 to f MAX, the Nyquist criterion states that our sampling frequency needs to be at least 2 * f MAX.
    • The Nyquist criterion can therefore also represented by the count of these intersections if the gain of the open loop is positive.
    • Thus, applying the Nyquist criterion, the resolution of 512 pixel/line images larger than 32 m is limited by sampling frequency, whereas images smaller than 32 m are limited by other aspects of the image acquisition.

Origin

1930s: named after Harry Nyquist (1889–1976), Swedish-born American engineer.

 
 

Definition of Nyquist criterion in US English:

Nyquist criterion

nounˈnīkwist krīˌtirēən
Electronics
  • A criterion for determining the stability or instability of a feedback system.

    Example sentencesExamples
    • Thus, applying the Nyquist criterion, the resolution of 512 pixel/line images larger than 32 m is limited by sampling frequency, whereas images smaller than 32 m are limited by other aspects of the image acquisition.
    • Assuming we're dealing with low pass signals - signals where the bandwidth of interest goes from 0 to f MAX, the Nyquist criterion states that our sampling frequency needs to be at least 2 * f MAX.
    • Unfortunately, the Nyquist criterion fixes a limit on the maximum frequency to be detected and as a result the Fourier analysis becomes more difficult to interpret.
    • The Nyquist criterion must still be satisfied with respect to the new lower sampling frequency in order to avoid aliasing.
    • The Nyquist criterion can therefore also represented by the count of these intersections if the gain of the open loop is positive.

Origin

1930s: named after Harry Nyquist (1889–1976), Swedish-born American engineer.

 
 
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更新时间:2024/12/23 14:08:20