为改善传统农业机械教学过程中"老师难教, 学生难懂"的局面, 从虚拟仿真教学角度出发, 以现代农场为原型, 基于Unity3D虚拟现实开发平台, 设计开发了"农业机械学"仿真教学系统. 阐述了系统的设计思想、功能和结构, 并对开发流程中所涉及到的关键技术进行了介绍. 应用结果表明, 系统实现了虚拟农场中农机设备生产作业的虚拟可视化, 并且对各种主要农机设备的拆装、维修保养及工作原理进行了在线展示, 具有一定的实用性和教学价值.%From the perspective of virtual simulation teaching, this study takes the modern farm as the object of reference and designs the simulative teaching system of "Agricultural Mechanics" based on the Unity3D engine in order to improve the situation that it is difficult for teachers to teach and for students to learn the agricultural machinery in a traditional way. This study demonstrates some of the original developing thoughts, function and structure of the system, and introduces the key technologies involved in the development process. The application result shows that the system realizes the virtual visualization of agricultural machinery equipment in the process of production operation in virtual farms, and displays online the virtual dismounting and assembly, maintenance and operating principle of all kinds of farm equipment. It has certain practicability and teaching value.
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