In Plan系统提供了应用程序编程接口(API),系统维护人员可以使用此功能对该系统进行二次开发,以此来满足厂内的实际需求,提高生产制作指示(MI)的制作效率及系统操作便捷性。文章主要介绍了API程序跨系统提取市场订单信息、钻孔信息编辑...In Plan系统提供了应用程序编程接口(API),系统维护人员可以使用此功能对该系统进行二次开发,以此来满足厂内的实际需求,提高生产制作指示(MI)的制作效率及系统操作便捷性。文章主要介绍了API程序跨系统提取市场订单信息、钻孔信息编辑、流程信息编辑及批量导出报表的开发及应用,使In Plan系统的操作效率提升。展开更多
本文基于 von Kármán 薄板理论,处理了圆薄板在周边均布面内压力作用下的自由振动、屈曲和后屈曲,其屈曲前后的稳定静平衡解以其精确解形式给出;在稳定静平衡构形附近,讨论了其微小轴对称自由振动.采用幂级数解法,可以精确地...本文基于 von Kármán 薄板理论,处理了圆薄板在周边均布面内压力作用下的自由振动、屈曲和后屈曲,其屈曲前后的稳定静平衡解以其精确解形式给出;在稳定静平衡构形附近,讨论了其微小轴对称自由振动.采用幂级数解法,可以精确地获得其固有频率和振型函数.当周边压力使圆薄板的最低固有频率为零时,就可获得分支解的临界点(即临界载荷)和相应的屈曲波型,然后求得了后屈曲的路径.展开更多
An integrated micro positioning xy-stage with a 2mm × 2mm-area shuttle is fabricated for application in nano- meter-scale operation and nanometric positioning precision. It is mainly composed of a silicon-based x...An integrated micro positioning xy-stage with a 2mm × 2mm-area shuttle is fabricated for application in nano- meter-scale operation and nanometric positioning precision. It is mainly composed of a silicon-based xy-stage,electrostatics comb actuator,and a displacement sensor based on a vertical sidewall surface piezoresistor. They are all in a monolithic chip and developed using double-sided bulk-micromachining technology. The high-aspect-ratio comb-driven xy-stage is achieved by deep reactive ion etching （DRIE） in both sides of the wafer. The detecting piezoresistor is located at the vertical sidewall surface of the detecting beam to improve the sensitivity and displacement resolution of the piezoresistive sensors using the DRIE technology combined with the ion implantation technology. The experimental results verify the integrated micro positioning xy-stage design including the micro xy-stage, electrostatics comb actuator,and the vertical sidewall surface piezoresistor technique. The sensitivity of the fabricated piezoresistive sensors is better than 1.17mV/μm without amplification and the linearity is better than 0. 814%. Under 30V driving voltage, a ± 10vm single-axis displacement is measured without crosstalk and the resonant frequency is measured at 983Hz in air.展开更多
文摘本文基于 von Kármán 薄板理论,处理了圆薄板在周边均布面内压力作用下的自由振动、屈曲和后屈曲,其屈曲前后的稳定静平衡解以其精确解形式给出;在稳定静平衡构形附近,讨论了其微小轴对称自由振动.采用幂级数解法,可以精确地获得其固有频率和振型函数.当周边压力使圆薄板的最低固有频率为零时,就可获得分支解的临界点(即临界载荷)和相应的屈曲波型,然后求得了后屈曲的路径.
文摘An integrated micro positioning xy-stage with a 2mm × 2mm-area shuttle is fabricated for application in nano- meter-scale operation and nanometric positioning precision. It is mainly composed of a silicon-based xy-stage,electrostatics comb actuator,and a displacement sensor based on a vertical sidewall surface piezoresistor. They are all in a monolithic chip and developed using double-sided bulk-micromachining technology. The high-aspect-ratio comb-driven xy-stage is achieved by deep reactive ion etching （DRIE） in both sides of the wafer. The detecting piezoresistor is located at the vertical sidewall surface of the detecting beam to improve the sensitivity and displacement resolution of the piezoresistive sensors using the DRIE technology combined with the ion implantation technology. The experimental results verify the integrated micro positioning xy-stage design including the micro xy-stage, electrostatics comb actuator,and the vertical sidewall surface piezoresistor technique. The sensitivity of the fabricated piezoresistive sensors is better than 1.17mV/μm without amplification and the linearity is better than 0. 814%. Under 30V driving voltage, a ± 10vm single-axis displacement is measured without crosstalk and the resonant frequency is measured at 983Hz in air.
