Views: 2 Author: Site Editor Publish Time: 2018-05-10 Origin: Site
 piezoelectric ceramic disc |  piezo transducer datasheet |  piezoelectric knock sensor |
The admittance characteristics of the piezo element sensor mainly include the static characteristics and dynamic characteristics of the free stator. The static characteristics mainly reflect whether the static is clamping the capacitances of the two phases of the piezoelectric ceramic disc are the same and are used to determine the symmetry of the two phases. The stator is mainly tested with a digital capacitance meter. two-phase static is clamping capacitance; dynamic characteristics mainly reflect the characteristics of the piezo parameters with frequency changes, it is the use of PV50A impedance analyzer for admittance circle, admittance with frequency changes in the test. The traveling wave type ultrasonic motor uses two standing waves of the same frequency and amplitude to form a traveling wave to drive the piezo cylinder transducer.
The A and B phases are spatially different by 1/4 wavelength. When the A-phase excitation causes the stator to generate a standing wave, the B-phase center is located at the equilibrium position of vibration, and the total expansion and contraction amount is zero. Therefore, A and B are two. The vibrations of the phases do not affect their respective electrical properties. Therefore, a single-phase circuit can be used to represent the equivalent circuit of the entire motor. It can be seen that there is a crest and a trough near the resonance frequency of the two ultrasonic piezoelectric transducer animation.Corresponding to the resonance point and anti-resonance point that is the maximum admittance point and the minimum admittance point, their corresponding frequencies are the resonant frequency and anti-resonant frequency.
The corresponding resonant frequency and anti-resonant frequency of the piezoelectric knock sensor of the ultrasonic motor are respectively 4641 8.5 Hz, 464995 Hz and 42366.8 Hz. It can be found that the diameter of the admittance circle of the two-type ultrasonic motor is equal to the G pole, which is 5.852463 and l 1.630121, and the larger is admittance circle, the smaller piezo transducer datasheet is corresponding internal resistance. This shows that the TRUM-60 II motor has less heat. Assuming the same conditions, it can explain the PZT piezoelectric ceramic vibration. The amount of heat emitted is relatively small, and the TRUM 60 I type stator is larger, The amplitude of the 60 I motor is relatively large.
