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浙江大学学报(农业与生命科学版)  2018, Vol. 44 Issue (4): 440-444    DOI: 10.3785/j.issn.1008-9209.2018.07.060
论文     
农机自动驾驶比例电磁阀精细控制的优化方法
耿彪1,李欢1,方慧2,3,张胜荣1*,许伟1
(1. 浙江联辉智能科技有限公司,浙江 嘉兴 314000;2. 浙江大学生物系统工程与食品科学学院,杭州 310058;3.农业农村部光谱检测重点实验室,杭州 310058)
Optimization method for precise control of proportional electromagnetic valve for automatic drive of agricultural machinery
GENG Biao1,LI Huan1,FANG Hui2,3,ZHANG Shengrong1*,XU Wei1
(1. LianFly Smart Technology, Jiaxing 314000, Zhejiang, China; 2. College of Biosystems Engineering and Food Science, Zhejiang University,
Hangzhou 310058, China; 3. Key Laboratory of Spectroscopy Sensing, Ministry of Agriculture and Rural Affairs, Hangzhou 310058, China)
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摘要: 为解决目前脉冲宽度调制(pulse width modulation, PWM)比例电磁阀控制方式的电流纹波大、控制精度不高等问题,本文提出采用双PWM对比例电磁阀进行控制,其中双PWM是指在一个PWM周期内,增加第二个调制。结果表明,双PWM调制模块工作提高了比例电磁阀的控制精准度,减小了比例电磁阀的电流纹波,从而减少对比例电磁阀的冲击,增加了电磁阀的寿命,降低了产品零件的维护和更换成本;而且在非道路机械产品换挡时使控制电流波动降低近1/3,有效减缓了换挡引起的速度突变,消除了换挡顿挫感。
关键词: 自动驾驶比例电磁阀脉冲宽度调制    
Abstract: To solve the problems of pulse width modulation (PWM) proportional solenoid valve control mode, such as large current ripple and low control precision, a method of dual PWM was adopted to control the proportional solenoid valve. Here, the dual PWM meant a second modulation was added in one PWM period. The results showed that this dual PWM can improve the control precision of the proportional solenoid valve, reduce the current ripple of proportional electromagnet, thus reducing the impulse of the proportional solenoid valve. As a result, it increased the life of solenoid valve, reduced the maintenance and replacement cost of product parts, and decreased the current fluctuation of the non-road mechanical products by nearly 1/3 in the shift, effectively slowing down the velocity jump caused by shifting and eliminating the sense of shift and frustration.
Key words: automatic drive    proportional electromagnetic valve    pulse width modulation
出版日期: 2018-09-11
CLC:  S-1  
基金资助: 国家重点研发计划子课题(2017YFD0700401)
通讯作者: 张胜荣(https://orcid.org/0000-0003-4228-872X)     E-mail: shell@lianfly.com
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引用本文:

耿彪, 李欢, 方慧, 张胜荣, 许伟. 农机自动驾驶比例电磁阀精细控制的优化方法[J]. 浙江大学学报(农业与生命科学版), 2018, 44(4): 440-444.

GENG Biao, LI Huan, FANG Hui, ZHANG Shengrong, XU Wei. Optimization method for precise control of proportional electromagnetic valve for automatic drive of agricultural machinery. Journal of Zhejiang University (Agriculture and Life Sciences), 2018, 44(4): 440-444.

链接本文:

http://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2018.07.060        http://www.zjujournals.com/agr/CN/Y2018/V44/I4/440

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