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基于NI(NationalInstruments)公司的LabView图形化编程平台,编制具有良好人机界面的硕士生机械设备故障诊断课程CAI教学系统,它把机械工程测试信号处理与机械设备故障诊断的基本理论、方法手段集成到一个辅助教学软件上加以展示,具有信息量大、形象、准确、逼真等诸多特征。教学实践表明:该系统具有良好的可操作性。 相似文献
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Autofocus method based on the analysis of image content information is investigated to reduce the alignment error resulting from mark positioning uncertainty due to defocus in microstructure layered fabrication process based on multilevel imprint lithography, The applicability of several autofocus functions to the alignment mark images is evaluated concerning their uniformity, sharpness near peak, reliability and measure computation efficiency and the most suitable one based on power spectrum in frequency domain (PSFD) is adopted. To solve the problem of too much computation amount needed in PSFD algorithm, the strategy of interested region detection and effective image reconstruction is proposed and the algorithm efficiency is improved. The test results show that the computation time is reduced from 0.316 s to 0.023 s under the same conditions while the other merits of the function are preserved, which indicates that the modified algorithm can meet the mark image autofocusing require-ments in response time, accuracy and robustness. The alignment error due to defocus which is about 0.5 μm indi-cated by experimental results can be reduced or eliminated by the autofocusing implementation. 相似文献
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向家伟 《中国科教创新导刊》2009,(20):181-182
机械制造工艺学是机械类专业主干课程。结合机械工程人才培养目标,通过建立课程新的内容体系、编写新的教材、研制新的CAI课件和CAPP教学软件三方面的改革,构建整体优化、结构合理的机械制造工艺学课程新体系。该体系适用于培养学生理论知识掌握能力、知识拓展能力、工程应用分析能力、思维能力等全方位的素质进行培养。 相似文献
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提高机械类专业课程实验教学质量的探讨 总被引：1，自引：0，他引：1
专业课程实验是我国各高校机械类专业所有学生必修的课程环节,在培养学生良好科研习惯、较强动手能力、科研能力和创新能力方面起着至关重要的启蒙和奠基作用。文章分析了影响我国机械类专业实验教学整体质量的几个基本问题,包括专业实验课程的地位和任务、实验课时系数、实验教学内容、教学方式和实验仪器设备质量控制等,并就这些问题提出了几点初步教改思路。 相似文献
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