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From Ad and Bd of the comparison shows that the amplification mechanism is very good, and the linear elastic hysteresis is very small. 4294A impedance analyzer
Amplification mechanism impedance analysis, the analysis of the results as s hown. A point for the minimum value of the impedance, the phase displacement amplification mechanism output characteristic discharge
Peak angle of the impedance characteristics of the large institutions, point A is the resonance frequency, b point compared to the anti-resonant frequency, indicating that at this frequency, the amplification mechanism
In the resonant state, the first-order natural frequency of about 1.49kHz. As a reference, the actual measurement, the resonant frequency of the amplification mechanism,
The amplification mechanism rigidly fixed to one end of the other end for displacement of the output terminal, the input sine wave voltage signal of different frequency, amplitude, and a forward bias of 50V (
The drive voltage is always positive) by laser Doppler vibrometer output of dynamic displacement measurement, measured in different frequency output china solenoid valve
Displacement amplification mechanism amplitude-frequency characteristic curve as shown pneumatic accessory .
The amplification mechanism of amplitude and frequency characteristics seen in 1.5kHz at amplitude maximum frequency corresponding to the resonant frequency. It can be seen real
The measured resonance point impedance analysis results are very close to the modal analysis of micro-displacement amplification mechanism, calculated the natural frequency of 1.7kHz
Higher than the actual measurement of the resonant frequency, the main reason is in finite element analysis does not take into account the quality of the resonant frequency of the piezoelectric stack.
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