Yongjian MAO, Minghai LI, Yingbo HE, Xia YAN, Qian LIU, Mingxiang LING, Tian KANG. Development of a piezoelectric-hydraulic series hybrid vibration exciter undergoing dynamic overloads[J]. Optics and Precision Engineering, 2023, 31(22): 3318
- Optics and Precision Engineering
- Vol. 31, Issue 22, 3318 (2023)
Fig. 1. Dynamic overload-vibration simulation system
Fig. 2. Sketch of structure and principle of series hybrid vibration exciter
Fig. 3. Piezoelectric excitation element and module， and their typical output vibration loads
Fig. 4. Precise assembly technology for piezoelectric excitation module
Fig. 5. Structural sketch of hydraulic excitation module
Fig. 6. Frequency-division control principle and typical results for series hybrid vibration excitation
Fig. 7. Hydraulic centering control principle and typical results
Fig. 8. Variable gain vibration control principle and typical results
Fig. 9. Vibration control principle for long-duration waveform replication and typical results
Fig. 10. Performance testing results of the vibration exciter under high overload
Fig. 11. Performance testing results of the vibration exciter under high overload rate
Fig. 12. Test conditions and control results in the application case
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Table 1. Results measured in piezoelectric excitations of single element and 6-element parallel module
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Table 2. Performance test results of the exciter
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