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連續(xù)可變量噴霧系統(tǒng)響應(yīng)特性試驗(yàn)
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Response Characteristics of Variable-rate Continuous Spraying System
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    摘要:

    構(gòu)建了以電動(dòng)調(diào)節(jié)閥為變流器件的變量噴霧系統(tǒng)，并采用試驗(yàn)方法得出了系統(tǒng)的階躍響應(yīng)特性，試驗(yàn)結(jié)果表明：在階躍幅值ΔQ分別為0.4、1.4、3.4、3.9、4.4L/min條件下，系統(tǒng)上升時(shí)間的最大值為1 s，表明系統(tǒng)響應(yīng)速度與現(xiàn)有的調(diào)壓變量噴霧系統(tǒng)相當(dāng)；系統(tǒng)上升時(shí)間、峰值時(shí)間和超調(diào)量都有幅值相關(guān)性，說(shuō)明系統(tǒng)是非線性系統(tǒng)。因此對(duì)此類(lèi)調(diào)流變量噴霧系統(tǒng)，其控制設(shè)計(jì)必須考慮非線性問(wèn)題。

    Abstract:

    In order to develop a new type of precision spraying equipment, a set of variable-rate spray system based on electric control valve device as a converter was developed, and the step response characteristics of the system were studied by using experimental methods. The result shows that the maximum rise time is 1 s in the condition of step amplitude ΔQ=0.4, 1.4, 3.4, 3.9, 4.4L/min, which is comparable with variable-rate spray system controlled by changing flow press; the rise time, peak time and overshoot show correlation with the amplitude, which indicates that the system belongs to nonlinear system. So the control design of this type of variable-rate continuous spray system must take nonlinear problems into account.

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邱白晶,李坤,沈成杰,徐溪超,毛罕平.連續(xù)可變量噴霧系統(tǒng)響應(yīng)特性試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(9):32-35. Response Characteristics of Variable-rate Continuous Spraying System[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(9):32-35.

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