脈寬調(diào)制型變量噴霧控制ECU設(shè)計與分析

doi:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

首頁 > 過刊瀏覽>2007年第38卷第1期 >123-126. DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

脈寬調(diào)制型變量噴霧控制ECU設(shè)計與分析
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                        10.3969/j.issn.1000-1298.[year].1.[sequence]
                    
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摘要:

提出一種脈寬調(diào)制型變量噴霧ECU設(shè)計方案,，設(shè)計包含通訊單元及控制單元,，通訊單元通過CAN總線可與拖拉機(jī)上配置的控制器直接聯(lián)系；控制單元則利用斬波橫流電路提高了系統(tǒng)電磁回路的響應(yīng)速度,。利用EDA手段并結(jié)合實驗,，對控制單元的斬波橫流電路進(jìn)行了分析和研究,。結(jié)果表明使用斬波橫流電路使電流上升時間為4.5 ms，下降時間為9 ms,，并使流量隨占空比線性增加,。

Abstract:

The modulated spraying nozzle control (MSNC) system equipped with pulse-width modulation (PWM) nozzle is a new kind of variable rate technology (VRT) for spraying. A design-scheme of the electronic control unit（ECU）was investigated for the PWM nozzle, which included a communication unit that could transmit messages between the computer and the ECU in the tractor, and the control unit which might improve the response speed by using the cross-current chop-wave circuit. Using EDA tools, the simulation and the experiment were carried out to study the circuit. The results show that with this unit the rising edge of the circuit is 4.5 ms and the falling edge is 9 ms. Furthermore, the relationship between flow rate and duty cycle is linear.

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焦俊生,張偉.脈寬調(diào)制型變量噴霧控制ECU設(shè)計與分析[J].農(nóng)業(yè)機(jī)械學(xué)報,2007,38(1):123-126.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(1):123-126.

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