根据叠层压电陶瓷的大容性负载特性,在电路分析的基础上提出了基于DC-DC升压变换器和LC振荡的驱动控制电源,在驱动电路中加入偏置电压,使输出电压在-20V到100V之间,满足叠层压电陶瓷的驱动要求。将此驱动器用于压电直线电机,电机运转平稳,电路功耗小,通过匹配不同的电感实现了宽频率范围驱动。
According to the large capacitive characteristic of multilayer piezoelectric ceramic,a drive circuit for multilayer piezoelectric ceramic based on DC-DC step-up converter and LC resonant was proposed based on circuit analysis,and the output voltage was kept between-20 V and 100 V through a offset voltage.It is proved that this circuit is reliable for the drive of a new type of non-resonant piezoelectric motor with a lower power loss,and wide frequency drive brand is got through different inductor.