“Aiming at the problems existing in the existing micro-aircraft power unit, a multi-spoke thin-plate rotating ultrasonic motor based on in-plane standing waves is designed. The finite element method is used to optimize the structural parameters, and the modal planning and analysis of the piezoelectric vibrator are carried out. The results show that it has the characteristics of simple structure and excitation mode.
I believe that the small partners who usually pay attention to the power signal source must be very interested in the content of the related cases. Today, the editor of Aigtek will share with you a pure dry goods case: the power signal source ATG-2042 is the basis for the ultrasonic motor of the micro rotorcraft Not much to say about the application in the research, let’s continue to look down with the editor!
Experiment Name: Application of Power Signal Source ATG-2042 in the Basic Research of Ultrasonic Motor for Mini Rotorcraft
Experimental purpose: Aiming at the problems existing in the existing micro-aircraft power plant, a multi-spoke thin-plate rotating ultrasonic motor driven by in-plane standing waves is designed. The finite element method is used to optimize the structural parameters, and the modal planning and analysis of the piezoelectric vibrator are carried out. The results show that it has the characteristics of simple structure and excitation mode.
Experimental equipment: ATG-2042 power signal source (signal source + power amplifier), oscilloscope, piezoelectric vibrator under test, computer, microcontroller, laser transmitter.
According to the driving principle of the piezoelectric vibrator, applying the same excitation signal to the upper and lower piezoelectric ceramics of the piezoelectric vibrator can cause the piezoelectric vibrator to vibrate, and the driving point of the tip of the spoke-like tooth obtains a slight elliptical movement to drive the rotation shaft.
Here, the power signal generator is used directly as the power signal source to simplify the experimental device, and the oscilloscope is used to monitor the voltage and frequency of the excitation signal actually applied to the piezoelectric vibrator. Use hot melt glue to fix the ultrasonic motor principle prototype on the base, and the fixed place is the vibration node of the piezoelectric vibrator to reduce the impact on vibration.
Principle prototype frequency sensitivity experiment device
The optimal working frequency band of the piezoelectric vibrator is between 98.3kHz and 98.7kHz, in this frequency band, the motor speed reaches the maximum and remains basically unchanged. The working frequency bandwidth is 0.5kHz, which can effectively avoid the problem of working frequency drift caused by assembly errors and other reasons.
The relationship between no-load speed and driving frequency of the principle prototype
The ATG-2042 power signal generator used in the experiment can be used as a power signal source or as a power amplifier. When used as a power signal source, no additional power amplifier is needed.
Power signal source ATG-2042: