液体媒质超声波电机驱动系统  

Driving System of the Ultrasonic Motor Driving Fluid Directly

作　　者：夏长亮[1] 杨荣[1] 祁温雅[1] 史婷娜[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2005年第1期5-8,共4页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目 ( 50207006 );教育部博士点基金资助项目 ( 20040056021 );天津市自然科学基金资助项目(053603311).

摘　　要：为获得液体媒质超声波电机的最佳性能,针对其特点设计了驱动电路,由反向器构成的自激多谐振荡器产生频率可调的脉冲信号,将该信号作移相处理,产生 4路依次相差 90°的方波信号,驱动两路推挽功放主电路.利用设计的电路测得电机的实际驱动电压波形.该电路易于调节和控制,可满足对液体媒质超声波电机驱动和控制的要求.In order to get the best performance of a new type non-contact ultrasonic motor whose rotor immerges in fluid, according to this motor′s peculiarity a driving circuit is designed, where a pulse signal whose frequency is adjustable is generated by the self excited oscillation. Then the signal is shifted in phase. Therefore by this way four sets of square-wave signals that differ 90° in phase in succession are generated, which can be applied to driving two sets of push-pull main circuits. Four input signals of the motor are obtained through experiments. Moreover, as the driving frequency and voltage are easy to regulate, this circuit meets the requirement of most experiments very well.

关 键 词：超声波电机 非接触 驱动电路 

分 类 号：TM383[电气工程—电机]