Views: 1 Author: Site Editor Publish Time: 2018-05-15 Origin: Site
 piezo discs crystal |  piezo discs and cylinder |  PZT material piezo ceramic |
In the case of bonding conditions and friction materials, the important factor that is affecting the motor surface heat that is the loss caused by the internal resistance of the piezoelectric ceramic. The performance of the piezoelectric ceramic shows that the dielectric loss is significantly lower than 3%. Therefore, the motor of piezo discs and cylinder is running. The degree of heat is caused by the loss in the process. In the case of the same driving voltage, it is driving frequency and other conditions, the heat of piezo discs crystal is emitted by the dielectric loss of the ceramic body has a decisive influence on the surface temperature. The P-41 piezoelectric ceramic is used in the type that I has a higher dielectric loss than TRUM. 60 II motor PMnS piezoelectric ceramics, so P4 material piezoelectric disk emits more heat than PMnS. Therefore, the surface temperature of type I motor is greater than TRUM.
The surface temperature of the motor. Piezoelectric ceramic is as a vibration generator, when it is operating near the high electric field resonance frequency, the heat is generated by the dielectric loss ,which will make the temperature of the component rise rapidly, and then affecting the service life of the piezo element sensor. Therefore, before the preparation of ultrasonic motor, it is very important to choose a piezoelectric ceramic with excellent comprehensive properties.ultrasonic motor has the characteristics of self-locking and fast response. When the PZT material piezo ceramic is placed on the stator, it is equivalent to the pressure on the stator and the restraint is increased. At this time, the boundary conditions will change the amplitude of the stator surface that becomes smaller.
