电子与封装Issue(7)：20-24,5.
压电式喷射点胶控制系统的电路设计*
The Circuit Design of Piezoelectric Jetting Dispensing Control System
摘要
Abstract
According to the working principle of newly piezoelectric dispensing head, which using the pushed driving of double piezoelectric ceramic for colloform jetting, we design and establish this piezoelectric jetting dispensing control system. Meanwhile, package the hardware and debug the software, achieve the goal that frequency, duty cycle and amplitude of the lower piezoelectric ceramic signal, amplitude of the upper piezoelectric ceramic signal can be continuously adjusted. The system has the function of man-machine interaction, cleaning, regulating injection points, and so on. After tested, all of the system parameters can meet the presupposed index, with the frequency display error:±1.2 Hz, duty cycle display error:±1%, amplitude display error:±8 mV. Under the condition that voltage of the driving square-wave 200 V, frequency 65 Hz, duty cycle 20%, diameter of nozzle 250μm, pressure 4 bar, height of jetting 3.5 mm, we get the jetting drops with an average diameter of 1.07 mm, and its conformity error ±2%.关键词
压电式喷射点胶/STC89C52RC/压电陶瓷Key words
piezoelectric jetting dispensing/STC89C52RC/piezoelectric ceramic分类
信息技术与安全科学引用本文复制引用
陈丹儿,王小萍,王申,梁楚尉,李益盼,周如海,蔡建法,王凌云..压电式喷射点胶控制系统的电路设计*[J].电子与封装,2013,(7):20-24,5.基金项目
中央高校基金科研业务费专项资金资助项目 （）
