Research Article
Acceleration Harmonic Estimation for Hydraulic Servo Shaking Table Based on Multi-Innovation Stochastic Gradient Algorithm
Table 2
Harmonic information of the test signal.
| | Harmonic order | Frequency (Hz) | Amplitude (m/s2) | Phase (rad) |
| | Fundamental | 3 | 8 | −0.1 | | Second harmonic | 6 | 7 | −0.7 | | Third harmonic | 9 | 6 | 0.5 | | Fourth harmonic | 12 | 5 | −0.6 | | Fifth harmonic | 15 | 4 | 1.2 | | Sixth harmonic | 18 | 3 | −0.4 | | Seventh harmonic | 21 | 2 | 0.7 | | Eighth harmonic | 24 | 1 | −0.8 |
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