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小麥播種機(jī)播量控制參數(shù)自校正方法
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國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2016YFD070030403)和江蘇省信息農(nóng)業(yè)重點(diǎn)實(shí)驗(yàn)室項(xiàng)目(KLIAKF1901)


Self-correcting Method for Application Rate Control Parameters of Wheat Seed Drill Machine
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    摘要:

    針對(duì)傳統(tǒng)外槽輪式播量控制系統(tǒng)因流量-轉(zhuǎn)速標(biāo)定關(guān)系失偏而導(dǎo)致控制精度下降的問(wèn)題,提出了一種通過(guò)動(dòng)態(tài)校正控制參數(shù)保持播量控制精度的方法,,該方法采用基于氮?dú)鈴椈蔀橹瘟?、S型稱(chēng)重傳感器為拉力的稱(chēng)重式播量檢測(cè)系統(tǒng),利用兩類(lèi)傳感器加權(quán)信號(hào)與實(shí)際播量方程的線(xiàn)性組合實(shí)現(xiàn)原始傳感信號(hào)濾波的獨(dú)特測(cè)量特性,,構(gòu)建播量檢測(cè)算法,,并根據(jù)播量動(dòng)態(tài)檢測(cè)結(jié)果對(duì)基于流量-轉(zhuǎn)速標(biāo)定關(guān)系的控制參數(shù)作動(dòng)態(tài)校正,實(shí)現(xiàn)播量的本質(zhì)閉環(huán)控制,,保持控制精度的穩(wěn)定,。利用搭建的播種機(jī)測(cè)試平臺(tái),開(kāi)展了基于播量檢測(cè)的播量控制參數(shù)未校正和自校正動(dòng)態(tài)試驗(yàn),。在所有的測(cè)試過(guò)程中,,播量檢測(cè)結(jié)果與實(shí)際結(jié)果之間的絕對(duì)相對(duì)偏差最大值、平均值和標(biāo)準(zhǔn)差分別為4.52%,、2.68%和1.14%,;播量控制參數(shù)未校正時(shí),實(shí)際值與目標(biāo)值之間的絕對(duì)相對(duì)偏差最大值,、平均值和標(biāo)準(zhǔn)差分別為18.38%,、17.06%和1.21%,而引入控制參數(shù)自校正后,,實(shí)際值和目標(biāo)值之間的絕對(duì)相對(duì)偏差的最大值和平均值分別下降至3.70%和2.61%,標(biāo)準(zhǔn)差為0.67%,。試驗(yàn)結(jié)果表明:基于加權(quán)信號(hào)的播量檢測(cè)方法能有效獲取播種機(jī)的實(shí)際播量信息,,實(shí)現(xiàn)播量控制參數(shù)自校正,有效維持播量控制系統(tǒng)的控制精度,。

    Abstract:

    An application rate detection method was proposed based on a special dynamic weighing system where the nitrogen springs through pressure sensors provided the total supporting force and gave rise to the pulling force change of the S-type weighing sensors with the weight change of the material (wheat seed) inside the box. The unique measurement characteristics of the detection system was that the linear combination of the weighted sum of the two types of sensors and the actual application rate equation can filter the original signal of the sensors. The application rate detection method was found based on the measurement characteristics and applied to the application rate control of a seed drill machine with fluted rollers, with the control parameters self-corrected, which made the seed drill machine with fluted rollers realized the substantial closed-loop control of the application rate and ensured continuously high control accuracy. Using the seed drill machine with 6 of 24 fluted rollers were blocked, two types of tests for controlling the application rate, with and without the application of self-correcting control parameters, were carried out. During all the tests, the maximum, average and standard deviation of the absolute relative error between the measured value and the actual value were 4.52%, 2.68% and 1.14%, respectively. While the corresponding statistic data between the actual value and the target value were 18.38%, 17.06% and 1.21%, respectively without control parameters being self-corrected. And the corresponding data were improved to 3.70%, 2.61% and 0.67% after introducing the control parameter self-correcting. The test results showed that the application rate measurement method can effectively measure the application rate of the seed drill machine and can be applied to self-correcting control parameters and holding high control accuracy.

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丁永前,陳沖,余洪鋒,張洪達(dá),竇祥林,劉卓.小麥播種機(jī)播量控制參數(shù)自校正方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2023,54(4):31-37. DING Yongqian, CHEN Chong, YU Hongfeng, ZHANG Hongda, DOU Xianglin, LIU Zhuo. Self-correcting Method for Application Rate Control Parameters of Wheat Seed Drill Machine[J]. Transactions of the Chinese Society for Agricultural Machinery,2023,54(4):31-37.

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  • 收稿日期:2022-07-01
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  • 在線(xiàn)發(fā)布日期: 2022-08-01
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