Pollination work for fruit trees involves an extremely large amount of work. To solve this problem, we have been developing a rotary-wing UAV system that sprays pollen into the center of target flowers or flower clusters based on image processing. This paper describes the design and prototyping of a pollen atomizer and the results of experiments. A pressurized container was used to reduce weight and gain the flying distance of pollen. The mass flow rate to be discharged using the pressurized air depends on the nozzle diameter. Thus, the relationship between the nozzle diameter and the spray duration was determined by calculations and experiments. Based on these results, the sprayer was designed, and the spray form and number of injections were investigated by experiments.

There is a vibration speaker device called an audio exciter. The potential of the exciter as a vibration device was investigated by conducting experiments on a single steel plate and comparing the results with the impact test method using an impulse hammer. The power spectrum results showed that the exciter was able to vibrate up to approximately 20 kHz, and it was shown that it was possible to predict the magnitude of the exciter's FRF from the impulse hammer FRF results. Furthermore, a comparison with the impulse hammer results showed that the ILF identification was qualitatively better.