Research Article
An Ultra-Low Frequency Two DOFs’ Vibration Isolator Using Positive and Negative Stiffness in Parallel
Table 4
The natural frequency of vibration transmissibility curves in different directions.
| | Direction | PS frequency (Calculation) | PS frequency (Experiment) | Error (%) | PNSP frequency (Calculation) | PNSP frequency (Experiment) | Error (%) |
| | 2.80 Hz | 2.79 Hz | 0.36 | 1.15 Hz | 1.17 Hz | 1.74 | | 3.30 Hz | 3.32 Hz | 0.91 | 1.20 Hz | 1.21 Hz | 0.83 | | 2.80 Hz | 2.75 Hz | 1.79 | 1.10 Hz | 1.14 Hz | 3.64 |
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