CAJ | 학술논문

　　基于新型压电式点胶头采用的双压电陶瓷的推挽驱动作为胶体喷射的作用机制，设计并搭建了压电式喷射点胶控制系统，完成了硬件与软件模块的组装调试，实现对下压电陶瓷信号的频率、占空比、幅值、上压电陶瓷信号幅值的连续可调，具备人机交互、清洗、喷射点数可调等功能。经测试，系统各参数达到预定指标，频率显示误差：±1.2 Hz；占空比显示误差：±1%；幅值显示误差：±8 mV。在驱动方波电压200 V、频率65 Hz、占空比20%、喷嘴直径250μm、供料压力4 bar、喷射高度3.5 mm的条件下，得到平均直径为1.07 mm左右的喷射胶滴，一致性误差为±2%。
　　기우신형압전식점효두채용적쌍압전도자적추만구동작위효체분사적작용궤제，설계병탑건료압전식분사점효공제계통，완성료경건여연건모괴적조장조시，실현대하압전도자신호적빈솔、점공비、폭치、상압전도자신호폭치적련속가조，구비인궤교호、청세、분사점수가조등공능。경측시，계통각삼수체도예정지표，빈솔현시오차：±1.2 Hz；점공비현시오차：±1%；폭치현시오차：±8 mV。재구동방파전압200 V、빈솔65 Hz、점공비20%、분취직경250μm、공료압력4 bar、분사고도3.5 mm적조건하，득도평균직경위1.07 mm좌우적분사효적，일치성오차위±2%。
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%.