FFT Applications
FFT Vibration analysis
V-1-3 Measuring natural vibration frequency by sine sweep using external signal in sync with measurement

- Sweep excitation is one of the methods to measure natural frequency of parts etc.
The DS-5000 O-Solution enables output of sine sweep excitation signal to the controller of the vibration exciter. By exciting with frequency in sync with measurement, highly accurate measurement can be performed. - For instance, a test is performed with the controller of the vibration exciter set to 10 Hz to 200 Hz sine sweep and the acceleration of 30 m/s2, and then the frequency response function of vibration of the excitation table and acceleration of the part is measured using the sine sweep averaging function in sync with the internal signal of the DS-5000 O-Solution.
- You can see several peak values depending on a shape of a measurement object. Damping ratio also can be calculated by using half-power bandwidth method. Moreover, integrating function enables display and evaluation of velocity/force (mobility), displacement/force (compliance), force/acceleration (dynamic mass), force/velocity (mechanical impedance), force/displacement (dynamic rigidity).
Product list
Model | Product name | Remarks | Qty | |||
---|---|---|---|---|---|---|
1 | O-Solution DS-5000 | 6ch 40 kHz FFT set |
DS-5100 Main unit DS-0526 6ch 40 kHz Input unit OS-5100 O-Solution Platform OS-0522 FFT Analysis function OS-0512 Hardware Connection function |
1 | ||
2 | OS-4100 | Frequency response measurement software | 1 | |||
3 | DS-0545 | 2ch Signal output Unit | 1 | |||
4 | NP-3211 | Accelerometer with built-in preamplifier | Ultra compact, lightweight (0.5 g), frequency range: 0.3 Hz to 20 kHz ±3dB, signal cable (3 m) (included) | 2 | ||
5 | NP-0020 | Signal cable extension adapter | The adapter for signal cable extension (between the NP-0153 and the cable for the NP-3211). | 2 | ||
6 | NP-0153A | Signal cable for the NP-0020 | 5 m, -25 to +160˚C | 2 | ||
7 | NP-0021 | Miniature/BNC conversion connector | Converts the NP-0153 signal cable terminal to BNC connector and input to the DS-5000 O-Solution BNC connector. | 2 | ||
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