陈燕,曾泽钦,王杰,邹湘军,贾春洋,张坡.收获机虚拟环境模型与仿真平台构建[J].农业机械学报,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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收获机虚拟环境模型与仿真平台构建   [下载全文]
Virtual Environment Construction and Simulation Platform of Harvesting Machinery   [Download Pdf][in English]
投稿时间:2019-01-11  
DOI:10.6041/j.issn.1000-1298.2019.07.016
中文关键词:  联合收获机  虚拟环境  仿真平台  仿真试验
基金项目:国家重点研发计划项目(2017YFD0700100)和广东省自然科学基金项目(2018A030307067)
作者单位
陈燕 华南农业大学 
曾泽钦 华南农业大学 
王杰 华南农业大学 
邹湘军 华南农业大学 
贾春洋 华南农业大学 
张坡 华南农业大学 
中文摘要:为实现收获机械的设计创新以及整机作业行为和性能的仿真试验,以玉米收获机为例,采用Unity3D虚拟平台构建了收获机械三维仿真模型。根据物料流变特性,以虚拟弹簧和虚拟墙构建了植株模型,通过建立行为控制模型实现了收获机械与植株的交互,最终开发了收获仿真平台,应用该平台进行了验证试验和不同条件下的收获仿真试验。试验结果表明,构建的植株模型和虚拟收获环境符合收获机械仿真需求,仿真平台可进行收获机械作业性能的评估。
CHEN Yan  ZENG Zeqin  WANG Jie  ZOU Xiangjun  JIA Chunyang  ZHANG Po
South China Agricultural University,South China Agricultural University,South China Agricultural University,South China Agricultural University,South China Agricultural University and South China Agricultural University
Key Words:combine harvester  virtual environment  simulation platform  simulation test
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.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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