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MEMS悬臂梁的静态力学模型研究 被引量:4
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作者 谢嘉诚 左文 +1 位作者 张聪淳 王德波 《微电子学》 CAS 北大核心 2020年第4期543-547,554,共6页
研究分析了MEMS悬臂梁的静态力学特性。对比分析了集总式静力学模型和枢纽式静力学模型。对于集总式静力学模型,将MEMS悬臂梁的下拉位移假设为处处相等的普通电容极板,得到悬臂梁下拉位移和下拉电压。对于枢纽式静力学模型,将MEMS悬臂... 研究分析了MEMS悬臂梁的静态力学特性。对比分析了集总式静力学模型和枢纽式静力学模型。对于集总式静力学模型,将MEMS悬臂梁的下拉位移假设为处处相等的普通电容极板,得到悬臂梁下拉位移和下拉电压。对于枢纽式静力学模型,将MEMS悬臂梁假设为下拉位移处处不等的转轴,通过寻找悬臂梁在下拉过程中的等效受力点,得到下拉位移和下拉电压。比较了两种模型的静电力学下拉位移与下拉电压的相对误差。结果表明,集总式静力学模型的误差为20.5%,枢纽式静力学模型的误差仅有5.3%。这表明,枢纽式静力学模型的特性优于集总式静力学模型。 展开更多
关键词 MEMS 悬臂梁 力学模型 枢纽式模型
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Coordinated scheduling model for intermodal transit hubs based on GI/M^K/1 queuing system
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作者 贾洪飞 曹雄赳 杨丽丽 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第8期3247-3256,共10页
Coordinated scheduling of multimode plays a pivotal role in the rapid gathering and dissipating of passengers in transport hubs. Based on the survey data, the whole-day reaching time distribution at transfer points of... Coordinated scheduling of multimode plays a pivotal role in the rapid gathering and dissipating of passengers in transport hubs. Based on the survey data, the whole-day reaching time distribution at transfer points of passengers from the dominant mode to the connecting mode was achieved. A GI/M K/1 bulk service queuing system was constituted by putting the passengers' reaching time distribution as the input and the connecting mode as the service institution. Through queuing theory, the relationship between average queuing length under steady-state and headway of the connecting mode was achieved. By putting the minimum total cost of system as optimization objective, the headway as decision variable, a coordinated scheduling model of multimode in intermodal transit hubs was established. At last, a dynamic scheduling strategy was generated to cope with the unexpected changes of the dominant mode. The instance analysis indicates that this model can significantly reduce passengers' queuing time by approximately 17% with no apparently increase in departure frequency, which provides a useful solution for the coordinated scheduling of different transport modes in hubs. 展开更多
关键词 traffic engineering coordinated scheduling queuing theory intermodal transit hub HEADWAY
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