Piezoelectric vibrator 2 is pressed to the upper end of the peg with pressing force F1 and excites peg in axial direction.
Pressing force of piezoelectric vibrator to the peg was gradually increased every 14 N and corresponding measurements of vibration magnitudes on all three axes were taken.
Such character of amplitude increment related with contact area changes between peg and piezoelectric vibrator. More force is applied bigger micro deformations between peg and vibrator thus bigger contact area and more excitation energy transferred to the peg.
It is necessary that the entire rear surface of the peg is in contact with piezoelectric vibrator, so the maximum vibration energy passes from vibrator to peg.
It involves a hermetically sealed conventional microphone, battery, electronic unit, and
piezoelectric vibrator of the ossicular chain.
The peg is fixed in a gripper and the piezoelectric vibrator is pressed to the upper end of the peg.
Low frequency signal generator 3 provides signal to the piezoelectric vibrator. The amplitude and frequency of the signal are measured by multimeter 1.
Piezoelectric vibrator 5 is implemented in a housing 6.
Other topics explored include power spectral density modeling of torsional dynamic wind loads on tall buildings, and energy harvesting behaviors of different shapes of
piezoelectric vibrators. The book is illustrated with b&w images.
Two piezoelectric vibrators 18 are attached to the different parts of the platform and excite the elastic vibrations.
The bushing 2 is located on a platform with attached piezoelectric vibrators 20, 21.