超声波清洗机的设计与实现

发布时间：2018-05-11 14:16

本文选题：超声波清洗 + UC3875芯片　；参考：《河北大学》2014年硕士论文

【摘要】：超声波清洗就是利用在液体中发射足够大的超声波能量，使液体内部产生“空化效应”。超声波清洗的原理就是在清洗液中产生“空化效应”，液体中的气泡产生与破裂产生强大的冲击力，用来清除物体表面的杂质、污垢和油腻。本文结合超声波电源发展的现状，并针对超声波清洗机对超声波电源的具体要求，提出了电源主电路和控制电路基本结构方案。并对电源的主电路和控制电路进行了理论设计和实验。本文设计电路主要是使用UC3875芯片在超声波电源功率控制中的应用。通过使用UC3875芯片控制全桥移相电路的移相角来改变输出信号功率，通过控制移相角的大小，就可以控制输出信号的占空比，以此来达到调节负载上输出功率的目的。文中使用大功率IGBT设计全桥电路，并对IGBT设计了基于KA962芯片的驱动电路。而且还对换能器进行匹配电路设计，使超声波清洗机能够高效的进行清洗工作。文章还对清洗机的频率自动跟踪系统进行研究与分析，，使得超声波清洗机能够稳定、高效的工作。文章最后对整个系统进行了实验数据分析，对理论设计进行修正，结果表明系统设计可行，性能指标满足设计要求。
[Abstract]:Ultrasonic cleaning is the use of large enough ultrasonic energy in the liquid, so that the liquid has a "cavitation effect." The principle of ultrasonic cleaning is to produce the "cavitation effect" in the cleaning liquid, and the bubble in the liquid produces and breaks to produce the powerful impact force, which is used to remove the impurity, dirt and greasy on the surface of the object. Based on the development of ultrasonic power supply and the specific requirements of ultrasonic cleaning machine for ultrasonic power supply, the basic structure of main circuit and control circuit of power supply is put forward in this paper. The main circuit and control circuit of the power supply are designed and tested theoretically. In this paper, the application of UC3875 chip in power control of ultrasonic power supply is designed. The output signal power can be changed by using UC3875 chip to control the phase shift angle of the full bridge phase-shifting circuit. By controlling the magnitude of the phase shift angle, the duty cycle of the output signal can be controlled, thus the output power on the load can be adjusted. In this paper, the full bridge circuit is designed with high power IGBT, and the driving circuit based on KA962 chip is designed for IGBT. It also designs the matching circuit of the transducer to make the ultrasonic cleaning machine clean efficiently. The frequency automatic tracking system of the cleaning machine is studied and analyzed in order to make the ultrasonic cleaning machine work stably and efficiently. Finally, the experimental data of the whole system are analyzed, and the theoretical design is modified. The results show that the system design is feasible and the performance index meets the design requirements.
【学位授予单位】：河北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB559

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