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基于PWM技术的比例电磁阀的控制方法
资料介绍
精细农业是现代农业发展的必然趋势,施药方面通过深入研究变量喷雾技术,来提高农药利用率、减小环境污染等问题。本文在研究比例电磁阀等效电路模型的基础上,设计一种通过脉宽调制（PWM）技术控制比例电磁阀阀芯开口的方法。通过产生一定频率的PWM信号,在不改变频率的前提下调节该PWM波的占空比,获到适当的输出电流,然后将电流放大加载到比例电磁阀线圈上,进而控制管路内流量变化,最后得到不同的雾滴粒径和速度。根据植株病虫害的具体情况,调节系统参数,提高雾滴沉积率,改善喷雾效果。
Precision agriculture is an inevitable trend of modern agriculture development. Applications of pesticides are through in-depth study of variable spray technology to improve the pesticide utilization and reduce environmental pollution etc. Based on the research of the equivalent circuit model of proportional electromagnetic valve, the method of using pulse width modulation to control the opening of proportional electromagnetic valve was designed. By generating a certain frequency PWM signal, the duty ratio of PWM wave was regulated without changing the frequency, and the appropriate output current was obtained. Then it was amplified to load into the proportional electromagnetic valve coil to control the pi...
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| 文件名 | 大小 |
| 基于PWM技术的比例电磁阀的控制方法.pdf | 540K |
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