基于虚拟现实技术的机构认知分析及创新设计平台的建立
发布时间：2018-12-20 17:34
【摘要】：进入21世纪,社会的竞争归根结底就是人才的竞争,尤其是创新型人才的竞争。机械原理作为大学机械类本科生所必修的主干专业课程之一,也有着为社会培养创新型人才的责任。随着近年来高校大规模扩招,如何解决资金投入与人才培养之间的矛盾也越来越突出。近年来,尤其是进入21世纪以来计算机技术和信息技术的飞速发展,使得基于计算机技术的虚拟现实技术也得到了质的飞跃,由于虚拟现实技术的沉浸性、构想性、交互性三大特征,若把虚拟现实技术应用到机械原理创新教学和创新设计中,不仅可以大大减少资金的投入,而且还可以为学生对机构的认知分析和创新设计提供一个平台,激发他们的学习兴趣和创新设计的意识。本文即是研究创建这样一个创新平台,主要可以分为两大部分,一是基于虚拟现实的机构认知分析,二是建立连杆机构创新设计平台。 机构认知分析针对机光电液压一体化柔性制造系统中的三个独立单元,利用Pro/e建立模型并装配模型,通过特定的导入格式,把在Pro/e中装配好的模型导入到3ddsMax中,并根据每个单元中的机构的不同运动原理,分别采用不同的方式进行动画制作。用3dsMax exporter. Exe插件把3dsMax中做的动画以及模型生成可以在Virtools中打开的.nmo格式。在Virtools中为每个单元添加交互行为BB模块和操作按钮(2维帧),同时,添加第一人称摄像机,以达到使用户有身临其境的感觉。制作完成的界面最终发布成Web网页形式。利用本平台,可使学生从不同角度对机构进行认知和分析。 连杆机构创新平台则克服了本科生数学等知识的限制,为学生提供一个设计平面连杆机构平台。平台主要包括实现给定的连杆位置和再现运动轨迹两种情况。实现给定的连杆位置,由定长约束方程和定斜率约束方程可知。当给定的连杆的位置数为3时,预先选定一些未知数作为已知,把非线性问题转化为线性问题来解决,当给定的连杆位置数4-5个时,采用数值解法。再现给定运动轨迹,未知数要比实现给定连杆位置的多,所以采用优化的方法求解。C#语言编写创新平台界而,并对在建立平台过程中需要解决的关键问题进行分析解决。
[Abstract]:In the 21 st century, the competition of society is the competition of talents, especially the competition of creative talents. As one of the main courses of mechanical undergraduate students, mechanical principle also has the responsibility of cultivating innovative talents for the society. With the large-scale enrollment expansion in colleges and universities in recent years, how to solve the contradiction between capital investment and talent training is becoming more and more prominent. In recent years, especially in the 21st century, with the rapid development of computer technology and information technology, virtual reality technology based on computer technology has also got a qualitative leap. If the virtual reality technology is applied to the innovative teaching and design of mechanical principles, it can not only greatly reduce the investment of funds, but also provide a platform for students' cognitive analysis and innovative design of institutions. Stimulate their interest in learning and innovative design awareness. This paper is to study the creation of such an innovative platform, mainly can be divided into two parts, one is based on virtual reality mechanism cognitive analysis, the other is to establish a linkage mechanism innovation design platform. According to the three independent units in the integrated flexible manufacturing system of optoelectronic hydraulic system, the mechanism cognitive analysis uses Pro/e to establish the model and assemble the model. Through the special import format, the model assembled in Pro/e is imported into 3ddsMax. According to the different motion principle of the mechanism in each unit, the animation is made in different ways. Using 3dsMax exporter. Exe Plug-in animates in 3dsMax and builds models in. Nmo format that can be opened in Virtools. The interactive behavior BB module and the operation button (2 dimensional frame) are added to each unit in Virtools, and the first person camera is added to make the user feel on the spot. The finished interface is finally published in the form of a Web web page. Using this platform, students can recognize and analyze institutions from different angles. The innovative platform of connecting rod mechanism overcomes the limitation of mathematics knowledge of undergraduate students and provides a design plane linkage mechanism platform for students. The platform mainly includes two kinds of cases: realizing the given connecting rod position and reproducing the motion track. The fixed length constraint equation and the fixed slope constraint equation are used to realize the given connecting rod position. When the position number of a given connecting rod is 3, some unknown numbers are selected as known in advance, and the nonlinear problem is transformed into a linear problem to be solved. When the given connecting rod position number is 4-5, the numerical solution is adopted. For reproducing a given trajectory, the unknown number is more than that of realizing a given connecting rod position. Therefore, the optimization method is used to solve the problem. C # language is used to program the innovative platform boundary, and the key problems that need to be solved in the process of building the platform are analyzed and solved.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH122;TP391.9
本文编号：2388309
[Abstract]:In the 21 st century, the competition of society is the competition of talents, especially the competition of creative talents. As one of the main courses of mechanical undergraduate students, mechanical principle also has the responsibility of cultivating innovative talents for the society. With the large-scale enrollment expansion in colleges and universities in recent years, how to solve the contradiction between capital investment and talent training is becoming more and more prominent. In recent years, especially in the 21st century, with the rapid development of computer technology and information technology, virtual reality technology based on computer technology has also got a qualitative leap. If the virtual reality technology is applied to the innovative teaching and design of mechanical principles, it can not only greatly reduce the investment of funds, but also provide a platform for students' cognitive analysis and innovative design of institutions. Stimulate their interest in learning and innovative design awareness. This paper is to study the creation of such an innovative platform, mainly can be divided into two parts, one is based on virtual reality mechanism cognitive analysis, the other is to establish a linkage mechanism innovation design platform. According to the three independent units in the integrated flexible manufacturing system of optoelectronic hydraulic system, the mechanism cognitive analysis uses Pro/e to establish the model and assemble the model. Through the special import format, the model assembled in Pro/e is imported into 3ddsMax. According to the different motion principle of the mechanism in each unit, the animation is made in different ways. Using 3dsMax exporter. Exe Plug-in animates in 3dsMax and builds models in. Nmo format that can be opened in Virtools. The interactive behavior BB module and the operation button (2 dimensional frame) are added to each unit in Virtools, and the first person camera is added to make the user feel on the spot. The finished interface is finally published in the form of a Web web page. Using this platform, students can recognize and analyze institutions from different angles. The innovative platform of connecting rod mechanism overcomes the limitation of mathematics knowledge of undergraduate students and provides a design plane linkage mechanism platform for students. The platform mainly includes two kinds of cases: realizing the given connecting rod position and reproducing the motion track. The fixed length constraint equation and the fixed slope constraint equation are used to realize the given connecting rod position. When the position number of a given connecting rod is 3, some unknown numbers are selected as known in advance, and the nonlinear problem is transformed into a linear problem to be solved. When the given connecting rod position number is 4-5, the numerical solution is adopted. For reproducing a given trajectory, the unknown number is more than that of realizing a given connecting rod position. Therefore, the optimization method is used to solve the problem. C # language is used to program the innovative platform boundary, and the key problems that need to be solved in the process of building the platform are analyzed and solved.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH122;TP391.9
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