Design and experiment on driving power supply for drip irrigation piezoelectric pump
SUN Fuchun1, HU Caiqi1, LI Shengduo1, HU Xiaoqi2, LI Jie1, JI Jing1
1.College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao, Shandong 266109, China; 2. College of Engineering and Design, Lishui University, Lishui, Zhejiang 323000, China
Abstract：According to the requirement on driving power supply by a drip irrigation piezoelectric pump, a switch driving power supply is designed in this paper based on the EG8010 inverter chip by adopting single phase bridge voltage inverter, rectifier circuit and SPWM control sine wave generator chip. Firstly, the structure and working principle of driving power supply are proposed for drip irrigation piezoelectric pumps. Secondly, a single phase sine wave with continuously adjustable excitation voltage and frequency is formed by using the corresponding control regulation circuit. Then the output voltage feedback and regulation circuits, frequency control circuit and temperature monitor circuit are designed with hardware. At last, an experiment is carried out based on the single phase sine wave which will be used as an excitation source of drip irrigation piezoelectric pump. The results show that this driving power supply has a few advantages, namely dead time control equipped, high stability, low waveform distortion, simple structure, small volume, convenient operation, low cost and etc. compared with the traditional driving power supply unit which is composed of a signal generator and a power amplifier, and it can meet the requirement on driving and control by a drip irrigation piezoelectric pump.
孙夫纯, 胡彩旗, 李胜多, 胡笑奇, 李杰, 纪晶. 滴灌压电泵的驱动电源设计与试验研究[J]. 排灌机械工程学报, 2016, 34(9): 761-766.
SUN Fuchun, HU Caiqi, LI Shengduo, HU Xiaoqi, LI Jie, JI Jing. Design and experiment on driving power supply for drip irrigation piezoelectric pump. Journal of Drainage and Irrigation Machinery Engin, 2016, 34(9): 761-766.
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