자기베어링용 디지털 전력증폭기 설계

A power amplifier for Magnetic bearing system based on network is proposed in this paper. A power amplifier is classified into the linear method of simple circuit and the switching method of low power consumption. A power amplifier proposed in this paper designs into hybrid form which is mixed both the linear method and the switching method. Also, in case of using several independent power amplifiers, it is necessary to transmit control input from main controller to power amplifier and to control power amplifier system. A DSP controller board(TMS320LF2406) is adopted to solve this problems. Namely, a controller area network is constructed to receive control input from main controller and a digital PD control algorithm is realized to control power amplifier system in the DSP controller board. Experiments are carried out to verify the effectiveness of the proposed power amplifier system based on network.