5 Sexy Ways To Improve Your piezoelectric plate sensor

                       5 Sexy Ways To Improve Your piezoelectric plate sensor

piezoelectric plate power generation

piezoelectric sensor manufactuer

piezoelectric plate bimorph

There are two heat exchange processes during the operation of the ultrasonic motor stator, it is heat conduction process, it is PZT dielectric loss of piezoelectric plate power generation so that the motor body absorbs heat, which is causing the motor temperature to increase (only considering the influence of PZT on the stator temperature characteristics, do not consider the stator.The influence of the friction loss between the stator on the temperature of the stator; The natural convection heat transfer between the stator and the surrounding air causes a part of the heat to be transferred to the ambient air. 

According to the principle of piezoelectric plate sensor, these two heat exchange processes can be described by the cooling equation and the heat capacity theory of convection heat transfer, respectively, which is an expression model of the influence of the dielectric loss of the piezoelectric ceramic on the temperature characteristics of the stator. It can be seen that the stator temperature rises exponentially with time, and does not change after reaching the saturation temperature of the stator, and the stator is in thermal equilibrium. The stator temperature of piezoelectric sensor manufactuer is not only related to the driving voltage and driving frequency, but also closely related to the size (volume, thickness), dielectric constant, and dielectric loss factor of the piezoelectric ceramic structure. The larger the PZT dielectric constant and the loss factor of piezo sound sensor is the greater than heating value and the higher the stator temperature; the greater is the PZT thickness, the lower is the stator temperature.

40khz piezoelectric plate transducer is mainly because the thickness is greater, and the weaker is the electric field strength established inside the PZT,which is making the friction between the PZT wall and the wall is weakened and the energy generated by the friction is reduced, which is causing the stator temperature to decrease.Therefore, in order to reduce the temperature of the stator. the ultrasonic motor improves its dynamic characteristics, it is necessary to select a PZT piezoelectric plate bimorph is having a small dielectric constant and dielectric loss factor. At the same time, the PZT thickness is increased as much as possible while satisfying the dynamic performance requirements of the stator.