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水稻種繩直播機(jī)對(duì)地表不平度的動(dòng)態(tài)響
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Response of Taped Type Rice Direct Seeding Machine for Field Surface Roughness
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    摘要:

    為了探索水稻種繩直播機(jī)對(duì)地表不平度激勵(lì)的適應(yīng)性,，進(jìn)行了動(dòng)態(tài)模擬試驗(yàn)。根據(jù)樣機(jī)的結(jié)構(gòu)特點(diǎn),，設(shè)計(jì)了由角位移傳感器,、數(shù)據(jù)采集卡和計(jì)算機(jī)等構(gòu)成的地表不平度檢測系統(tǒng)。檢測了由旋耕形成的原始地表不平度和經(jīng)過種繩直播機(jī)作業(yè)后形成的地表不平度,，應(yīng)用Matlab軟件對(duì)信號(hào)進(jìn)行了時(shí)域和頻域分析,。應(yīng)用等同法建立了系統(tǒng)的傳遞函數(shù)，分析了系統(tǒng)的動(dòng)態(tài)特性,。研究結(jié)果表明,，由種繩直播機(jī)和土壤等構(gòu)成的土壤—機(jī)器系統(tǒng)是一個(gè)具有一階慣性特征的線性系統(tǒng),，系統(tǒng)的響應(yīng)速度、頻帶寬度和覆土厚度等性能指標(biāo)能夠滿足農(nóng)業(yè)技術(shù)要求,。

    Abstract:

    In order to investigate the adaptability of the developed taped type rice direct seeding machine for field surface roughness, dynamic simulated experiments were carried out. A field surface roughness measuring system composed of two angular displacement sensors, an A/D converter, a computer etc. was designed according to the structure and working principle of the seeding machine. The two types of field surface roughness, one known as original field surface roughness formed by the working of rotavator and the other known as rolled field surface roughness formed by the roller of the seeding -machine,were detected. The signals were analyzed in timedomain and frequency-domain by using Matlab software. Transfer functions were established by the method of identification, and the dynamic characteristics of the system were analyzed. The results showed that the “soil-machine” system is linear with the first order typical feature. The dynamic characteristics of the systems such as rapidity, bandwidth and soil covering thickness are able to satisfy the requirements of rice seeding technology. 

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任文濤,呂小榮,張本華.水稻種繩直播機(jī)對(duì)地表不平度的動(dòng)態(tài)響[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(8):58-61. Response of Taped Type Rice Direct Seeding Machine for Field Surface Roughness[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(8):58-61.

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