中图分类号： TN86；TN384 文献标识码： A DOI：10.16157/j.issn.0258-7998.212146 中文引用格式： 康玉宽，郑翰琳，黄巧，等. 基于FPGA的大功率压电陶瓷数字驱动电源设计[J].电子技术应用，2022，48(4)：39-43. 英文引用格式： Kang Yukuang，Zheng Hanlin，Huang Qiao，et al. Design of high power piezoelectric ceramic digital drive power based on FPGA[J]. Application of Electronic Technique，2022，48(4)：39-43.
Design of high power piezoelectric ceramic digital drive power based on FPGA
Kang Yukuang1，Zheng Hanlin2，Huang Qiao2，Shen Wei2
1.City College，Southwest University of Science and Technology，Mianyang 621000，China； 2.School of Information Engineering，Southwest University of Science and Technology，Mianyang 621000，China
Abstract： At present, the stacked piezoelectric ceramics can generate a thrust of up to 70 kN, and have nanometer-level precision positioning. In order to improve the output performance and accuracy of piezoelectric ceramic drive power, a design of high-power and high-precision piezoelectric ceramic digital drive power based on FPGA is proposed, which has a fixed output gain of 100 times. The driving power supply uses FPGA as the control core, adopts a half-bridge inverter circuit topology, and introduces closed-loop control to adjust the output voltage. Under a piezoelectric ceramic load with an equivalent capacitance of 5 μF, the input bandwidth of the drive power supply is 10 Hz~800 Hz, the output power can reach 1 kW, the voltage ripple is less than 30 mV, and the output accuracy is as high as 99.3%. The experimental results show that the driving power supply can be used in the application fields of stacked piezoelectric ceramics such as vibrating table and hexapod control platform, and has good driving performance.
Key words : piezoelectric ceramics；driving power supply；FPGA；high power；high precision