We have developed a robot that plays a trumpet that is used in brass and jazz etc. The sound that the robot produced this time is different from the sound that people make, it looks like an electronic sound. In this research, we analyzed the sound for the purpose of making a trumpet performance robot close to human performance, so we report it.
LEDs are widely used because of their low power consumption and long life. Since LEDs are severely deteriorated by heat, it is necessary to take measures such as heat dissipation with heat sinks. In this study, cooling is performed using a flow induced by a PSJA (plasma synthetic jet actuator). The induced flow thins a temperature boundary layer formed by heat dissipation of LEDs. We investigated the cooling temperature when the PSJA was driven at a certain burst frequency and several duty ratios. It showed good linearity with the cooling temperature at a duty ratio of 60% or less up to 10 seconds after driving, and the linearity collapsed after a while after driving.