Explanation of the principle of the use of the tracking filter components of the tensile tester

Tracking filters inTension testerIt occupies an important position in mechanical impedance testing and feature analysis. Technical engineers from Jinan Hengsi Shengda Instrument Co., Ltd. explained the role and usage methods of tracking filters on the test machine.

When the structure is stimulated with a frequency of Fs, the force signal and the corresponding signals at each point may also have other frequencies and random noise signals, which will affect the measurement accuracy of the tensile tester. The adoption of tracking filters makes it possible for us to extract signals with the same frequency as the excitation frequency from the response signal and develop more accurately.Tension tester.

The principle of an extrapolated slave filter is different from an extrapolated filter in that it uses a modulator instead of a carrier signal generator. The modulator can generate a carrier signal under the control of the excitation signal. The carrier signal frequency Fm is equal to the sum of the center frequency of the bandpass filter and the control frequency Fs. Therefore, inTension testerAt present, the modulator is a key link that constitutes the tracking filter. Other analyses are the same as extrapolated filters.

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