Table 3 Nine working conditions selected by orthogonal test design
| No. | System pressure Ps (MPa) | Frequency f (Hz) | Amplitude A (N) |
|---|---|---|---|
| 1 | 6 | 1 | 500 |
| 2 | 6 | 2 | 1000 |
| 3 | 6 | 4 | 1500 |
| 4 | 12 | 1 | 1000 |
| 5 | 12 | 2 | 1500 |
| 6 | 12 | 4 | 500 |
| 7 | 18 | 1 | 1500 |
| 8 | 18 | 2 | 500 |
| 9 | 18 | 4 | 1000 |
| No. | System pressure Ps (MPa) | Frequency f (Hz) | Amplitude A (N) |
|---|---|---|---|
| 1 | 6 | 1 | 500 |
| 2 | 6 | 2 | 1000 |
| 3 | 6 | 4 | 1500 |
| 4 | 12 | 1 | 1000 |
| 5 | 12 | 2 | 1500 |
| 6 | 12 | 4 | 500 |
| 7 | 18 | 1 | 1500 |
| 8 | 18 | 2 | 500 |
| 9 | 18 | 4 | 1000 |