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肥料抛撒机抛撒系统幅宽控制技术

DOI: 10.6041/j.issn.1000-1298.2012.S0.008, PP. 39-43

Keywords: 肥料抛撒机,抛撒系统,幅宽控制,脉宽调制

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Abstract:

基于PWM技术设计了一种闭环控制肥料抛撒幅宽调控系统。设计并确定了系统电路、传感器安装和PWM闭环反馈方法以及阀门开启最小占空比等参数。通过试验建立了幅宽与圆盘转速的关系,该系统可根据作业需要直接输入幅宽,使圆盘能够按照指定的转速进行抛撒作业,进一步提高了机具的可操作性和智能性。试验表明:在不同作业速度和不同抛撒幅宽试验下,实际抛撒幅宽与目标抛撒幅宽之间误差最大值为5.50%,最小值为2.86%,能够较好地满足实际生产要求。

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