Modeling of Device Using Corona Discharge Considering Voltage Range Limitation and Delay

A corona discharge is a kind of self-sustaining discharge that is generated by applying high voltage to asymmetric electrodes. Actuators using the corona discharge are expected to be a new type of actuator because they are quiet and robust since they do not require moving parts. The corona discharge is characterized by the limited range of voltage that produces thrust and the existence of a delay between the applied voltage and the thrust. Voltage range limitations have already been considered, but delay-based modeling is insufficient. Therefore, this study proposes modeling considering characteristics of the corona discharge such as voltage range limitation and delay between the applied voltage and the thrust. Through experiments, the theoretical modeling was compared with the actual frequency response, and the transfer function in the low-frequency range was approximated as a second-order system. The results of this research are expected to be applied to control.