共查询到20条相似文献,搜索用时 281 毫秒
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论文介绍了CAD/CAM教学中Pro/Engineer考评软件的开发,简述了该考评软件的工作流程,重点解释了本考评系统身份认证模块、出题模块、防作弊模块、评价模块和备份模块等各主要模块的功能与实现方法。 相似文献
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鉴于Pro/E在直接指出符合企业规范的明细表方面有不足之处,本文通过Pro/E4.0二次开发接口Pro/Toolkit与VC++集成,开发了明细表自动生成程序,同时也具体给出了开发配置,实现原理,主要编程代码和实例应用。 相似文献
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利用 D/A 转换的高精度仿真信号源的研制 总被引:1,自引:0,他引:1
针对定尺激磁的感应同步器输出信号的特点,本文研制了一种利用D/A转换技术和EPROM存储器的仿真信号源。实验结果表明,此仿真信号源可精确地模拟感应同步器的滑尺输出信号,大大方便了调试工作。 相似文献
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为了解决列车模拟器操控台上的人机接口与模拟器主机之间的实时数据传输问题,针对传统的I/O板卡体积大、成本高、维护困难等不足,提出了一种基于Modbus/TCP的分布式I/O系统解决方案。详细地介绍了Modbus/TCP协议的技术特点,开展了系统的具体性能要求分析,选取贝加莱公司的X20系统搭建了硬件平台,并以其配套的AS软件为开发平台,使用C语言编写了程序,并最终应用于上海轨道交通7号线列车模拟器上。现场运行结果表明,该系统运行稳定,实时性能符合要求、兼容性好,并能直接应用于其他线路的列车模拟器上。 相似文献
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Joyce TJ Unsworth A 《Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine》2000,214(5):519-526
A dual-cycle finger wear simulator has been designed, manufactured and commissioned. The simulator interspersed dynamic flexion-extension motion under light load with a heavier static 'pinch' load to a test prosthesis immersed in a lubricant heated to 37 degrees C. A validation test was undertaken on a size 2 Swanson prosthesis, leading to prosthesis failure in less than 1 million cycles. A second test was carried out on a Durham metacarpophalangeal prosthesis. After 4.8 million cycles a total wear factor for the joint of 0.60 x 10(-6) mm3/N m was calculated, with no cracks or damage visible. Both test results compare well with earlier tests undertaken on the Stokoe finger wear simulator. 相似文献
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文章介绍了一种新型太阳辐射模拟器的整体构造和技术指标;详细阐述了其性能测试方法,包括光源的光谱分布、辐照度范围、均匀性和稳定性等性能;同时对测试仪器、测试方法、测试结果以及常见问题的解决方法进行了分析和总结。 相似文献
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The wear of artificial finger joints using different lubricants in a new finger wear simulator 总被引:1,自引:0,他引:1
A new design of finger wear simulator has been manufactured. The simulator is a dual cycle machine, interspersing dynamic flexion–extension motion, where the loads were 10–15 N, with periods of a static 100 N ‘pinch’ load. Also, a two-piece finger prosthesis has been designed and manufactured from silane cross-linked polyethylene. Using the simulator, a comparison of the wear of the cross-linked polyethylene prosthesis was undertaken, with Ringer solution, distilled water and dilute bovine serum as the lubricants. Each test was run at 37°C and included a control prosthesis to account for lubricant uptake. All prostheses came from the same batch, having a gel content of 87%. In total, testing exceeded 27 million cycles. With bovine serum, the total wear factor for the prosthesis was 0.07×10−6 mm3/N m. With Ringer solution it was 0.98×10−6 mm3/N m and with distilled water the wear factor was 0.60×10−6 mm3/N m. This order of results matched that found with pin on plate wear tests using these same three lubricants. The lower wear found with bovine serum may have been due to the positive boundary lubricating effects of the proteins within the serum. Lubricant uptake was greater and more significant in the bovine serum test. 相似文献
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某型吊舱模拟器主要包括PC/104机、电源接口、视频接口、地址接口检测模块、通讯接口和通讯约定检测模块等的设计,以及吊舱模拟器的硬件和软件系统,可方便的检测飞机与吊舱的各类接口信号通连是否正常。 相似文献
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一种主/被动声呐目标回波信号模拟器的研制 总被引:1,自引:0,他引:1
根据实际需要,研制了一种主/被动声呐目标回波信号模拟器,该模拟器能够产生主/被动声呐测试、定检所需的主/被动声呐目标回波信号,目标回波信号中包含主动声呐、目标辐射噪声、海杂波、混响等信号,信号输出形式包括声信号和电信号2种。该模拟器可在空气介质条件下,实现声呐接收、处理、显示系统的定检,以及声呐测距系统和方位系统的定检;在水声环境中,可实现对接收换能器方向性、接收系统灵敏度等的测试。通过性能测试及与实际声呐系统联试,证明该模拟器达到了设计功能和性能指标要求,已交付用户使用。这里对其主要数学模型、系统硬件结构、软件流程进行了简要介绍。 相似文献