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    • 3. 发明公开
    • DRIVING SYSTEM FOR PIEZOELECTRIC PUMP
    • 压电泵驱动系统
    • EP3309396A1
    • 2018-04-18
    • EP17196101.4
    • 2017-10-12
    • Microjet Technology Co., Ltd
    • Chen, Shih-ChangLiao, Jia-YuHuang, Chi-FengLee, Wei-MingHan, Yung-Lung
    • F04B35/04F04B43/04
    • F04B43/046F04B35/04F04B35/045H01L41/042H02N2/06
    • A driving system (10) includes a voltage conversion module (11), a frequency control module (12), a voltage switching module (13) and a detecting module (14). The voltage conversion module (11) is used for converting a first DC voltage (Vd1) into a second DC voltage (Vd2). The frequency control module (12) searches a resonant working frequency of a piezoelectric actuator (161) through circuit oscillation and generates a switching signal according to the resonant working frequency. According to the switching signal, the voltage switching module (13) converts the second DC voltage (Vd2) into an AC voltage so as to drive the piezoelectric actuator (161). The detecting module (14) includes a gas pressure sensor (141) and a microcontroller (142). The gas pressure sensor (141) generates a detected gas pressure value according to a result of detecting a gas pressure of the piezoelectric pump (16). The microcontroller (142) controls the voltage conversion module (11) to adjust the output voltage. Consequently, the gas pressure of the piezoelectric pump (16) is adjusted.
    • 驱动系统(10)包括电压转换模块(11),频率控制模块(12),电压切换模块(13)和检测模块(14)。 电压转换模块(11)用于将第一直流电压(Vd1)转换为第二直流电压(Vd2)。 频率控制模块(12)通过电路振荡搜索压电致动器(161)的谐振工作频率,并根据谐振工作频率产生开关信号。 根据切换信号,电压切换模块(13)将第二DC电压(Vd2)转换为AC电压以驱动压电致动器(161)。 检测模块(14)包括气压传感器(141)和微控制器(142)。 气体压力传感器(141)根据检测压电泵(16)的气体压力的结果产生检测气体压力值。 微控制器(142)控制电压转换模块(11)以调节输出电压。 结果,压电泵(16)的气压被调节。