摘要
针对传统低频超声雾化喷头驱动电源在工作过程中存在工作效率低、稳定性差等缺点,设计了一种可靠、高效的低频超声雾化喷头驱动电源.该电源采用单端反激式拓扑方式,应用EVC,在基于ARM9.0的Wince5.0平台下开发了喷头的智能驱动程序,产生的PWM的频率和占空比均可智能调整,以保证喷头工作在谐振频率附近;应用阻抗分析仪PV70A精确测量了低频超声雾化喷头的等效电路参数,计算出串联匹配电感参数值;应用Multisim10.0仿真软件,在理想变压器模型基础上,结合漏感、匝间电容等分布参数构建了变压器模型;研究了高频变压器的初级电感、漏感以及变压器输出匹配电容等关键参数对驱动电路的影响,确定了驱动电源的最优参数,并通过试验验证了设计的正确性.
To solve the problems of low efficiency and poor stability of traditional drive power,a novel drive power of low frequency ultrasonic nozzle was developed.The novel drive power was designed with single-ended fly-back topology circuit.An intelligent drive program of ultrasonic atomization nozzle was developed by embedded visual C ＋ ＋（EVC） program language on Wince5.0 platform and ARM9.0.In the program,frequency and duty of PWM could be adjusted intelligently to ensure the nozzle working near the resonant frequency.Impedance analyzer PV70 A was applied to measure equivalent circuit parameters of the nozzle to compute the matching inductance by corresponding mathematical formula.The simulation model of the novel drive power was established by Multisim10.0.The transformer was featured by ideal transformer model and distribution parameters of leakage inductance and turn-to-turn capacitance.The optimum parameters of the drive power were obtained by simulation,and the simulation result was verified by actual circuit.
出处
《江苏大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第5期536-542,共7页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(51275214)
江苏省自然科学基金资助项目(BK2011470)
江苏省研究生创新计划项目
江苏高校优势学科建设工程项目(苏财教[2011]8号)
关键词
超声雾化器
驱动电路
脉冲变压器
低频
ARM
ultrasonic atomizer
drive circuit
pulse transformer
low frequency
ARM
