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收獲機虛擬環(huán)境模型與仿真平臺構(gòu)建
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國家重點研發(fā)計劃項目(2017YFD0700100)和廣東省自然科學(xué)基金項目(2018A030307067)


Virtual Environment Construction and Simulation Platform of Harvesting Machinery
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    摘要:

    為實現(xiàn)收獲機械的設(shè)計創(chuàng)新以及整機作業(yè)行為和性能的仿真試驗,,以玉米收獲機為例,采用Unity3D虛擬平臺構(gòu)建了收獲機械三維仿真模型。根據(jù)物料流變特性,以虛擬彈簧和虛擬墻構(gòu)建了植株模型,通過建立行為控制模型實現(xiàn)了收獲機械與植株的交互,,最終開發(fā)了收獲仿真平臺,應(yīng)用該平臺進(jìn)行了驗證試驗和不同條件下的收獲仿真試驗。試驗結(jié)果表明,,構(gòu)建的植株模型和虛擬收獲環(huán)境符合收獲機械仿真需求,仿真平臺可進(jìn)行收獲機械作業(yè)性能的評估,。

    Abstract:

    In order to realize the design innovation of harvesting equipment and the simulation test of the machine operation behavior and performance, the corn harvesting equipment was taken as an example, the 3D simulation model of harvesting equipment was built by Unity3D virtual platform. In order to simulate the deformation of the plant, according to the rheological properties, the plant model was constructed by connecting multiple cylinders with virtual springs and virtual walls. Then, establishment of behavioral models achieved interaction between harvesting equipment and plants. Finally, the harvesting simulation platform was used to verify the harvesting simulation test under different conditions, including the state change test of the plant under wind and rain, the harvesting behavior observation test of the harvesting process and the harvesting performance test of harvesting equipment with the traveling speed and planting density as factors. The result was that the fruit loss rate was decreased rapidly with the increase of speed, but the rate was decreased slowly when the speed exceeded 0.385m/s. At the same time, the higher the planting density was, the slower the fruit loss rate was decreased. Further analysis of variance showed that both the traveling speed and the planting density had significant effects on the harvesting performance of the harvesting equipment (P<0.01), which showed that the simulation platform can effectively simulate the harvesting situation and evaluate the performance of the harvesting equipment.

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陳燕,曾澤欽,王杰,鄒湘軍,賈春洋,張坡.收獲機虛擬環(huán)境模型與仿真平臺構(gòu)建[J].農(nóng)業(yè)機械學(xué)報,2019,50(7):159-166. CHEN Yan, ZENG Zeqin, WANG Jie, ZOU Xiangjun, JIA Chunyang, ZHANG Po. Virtual Environment Construction and Simulation Platform of Harvesting Machinery[J]. Transactions of the Chinese Society for Agricultural Machinery,2019,50(7):159-166.

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  • 收稿日期:2019-01-11
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  • 在線發(fā)布日期: 2019-07-10
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