The paper sheds light on the idle lean blow off(LBO)problem for high fuel air ratio(FAR)com⁃bustor,which is impossible to be addressed with traditional aero combustor design.A significant improvement in aero combustor...The paper sheds light on the idle lean blow off(LBO)problem for high fuel air ratio(FAR)com⁃bustor,which is impossible to be addressed with traditional aero combustor design.A significant improvement in aero combustor design is required to resolve the idle LBO issue.The authors detailed a practical and efficient solu⁃tion,which not only solved the idle LBO issue but also defined the aero-thermal design for high-FAR combustor.The design will usher in a new era of aero combustor.展开更多
秸秆焚烧容易污染空气,影响交通。常规秸秆焚烧监测难度较大,而卫星遥感数据具有覆盖面广,时效性强、分辨率高等优点,有利于秸秆焚烧监测工作的进展。本文将介绍如何使用MODIS数据提取秸秆焚烧火点的算法。在算法实现上采用交互式数据语...秸秆焚烧容易污染空气,影响交通。常规秸秆焚烧监测难度较大,而卫星遥感数据具有覆盖面广,时效性强、分辨率高等优点,有利于秸秆焚烧监测工作的进展。本文将介绍如何使用MODIS数据提取秸秆焚烧火点的算法。在算法实现上采用交互式数据语言IDL(Interactive Data Language)进行实现,大大缩短了人机交互时间,提高了秸秆焚烧点自动提取的响应速度,从而提高工作效率,促进秸秆焚烧监测工作的开展。展开更多
In order to improve the steady and dynamic characteristic of the idle speed control and study the performance of the fuzzy control method for the idle speed control, a fuzzy control system is developed to control the ...In order to improve the steady and dynamic characteristic of the idle speed control and study the performance of the fuzzy control method for the idle speed control, a fuzzy control system is developed to control the idle speed of gasoline engine. The construction and working principle of the fuzzy controller are described, and the design procedure of the fuzzy controller is given in detail. The control parameters are determined by computer simulation. The simulation and experiments on the engine test bench show that the idle speed is controlled accurately both in stationary and in dynamic states, and the fuzzy control method is robust to the changes of engine parameters.展开更多
MODIS数据具有数据量大,波段多等特点,用现有遥感软件进行几何校正,人机交互多且耗时较长,导致图像处理效率低下。本文采用基于三角网的几何校正算法,在几何校正的过程中把影像分块,各块的校正算法相互独立,计算完毕后再进行拼接。本文...MODIS数据具有数据量大,波段多等特点,用现有遥感软件进行几何校正,人机交互多且耗时较长,导致图像处理效率低下。本文采用基于三角网的几何校正算法,在几何校正的过程中把影像分块,各块的校正算法相互独立,计算完毕后再进行拼接。本文作者用IDL(Interactive Data Language)编写了相关程序,运行结果表明,这种方法占用内存小,计算速度快,可以提高MODIS数据处理效率。展开更多
文摘The paper sheds light on the idle lean blow off(LBO)problem for high fuel air ratio(FAR)com⁃bustor,which is impossible to be addressed with traditional aero combustor design.A significant improvement in aero combustor design is required to resolve the idle LBO issue.The authors detailed a practical and efficient solu⁃tion,which not only solved the idle LBO issue but also defined the aero-thermal design for high-FAR combustor.The design will usher in a new era of aero combustor.
文摘秸秆焚烧容易污染空气,影响交通。常规秸秆焚烧监测难度较大,而卫星遥感数据具有覆盖面广,时效性强、分辨率高等优点,有利于秸秆焚烧监测工作的进展。本文将介绍如何使用MODIS数据提取秸秆焚烧火点的算法。在算法实现上采用交互式数据语言IDL(Interactive Data Language)进行实现,大大缩短了人机交互时间,提高了秸秆焚烧点自动提取的响应速度,从而提高工作效率,促进秸秆焚烧监测工作的开展。
基金国家重点基础研究发展规划(973)(the National Grand Fundamental Research973Program of China under Grant No.2006CB701401)国家"十五"科技公关计划项目(the Key Technologies R&D Program o"fTenth Five-Year-Plan"China under Grant No.2004BA810B05)现代古生物学和地层学国家重点实验室资助项目(063110)联合资助。
文摘In order to improve the steady and dynamic characteristic of the idle speed control and study the performance of the fuzzy control method for the idle speed control, a fuzzy control system is developed to control the idle speed of gasoline engine. The construction and working principle of the fuzzy controller are described, and the design procedure of the fuzzy controller is given in detail. The control parameters are determined by computer simulation. The simulation and experiments on the engine test bench show that the idle speed is controlled accurately both in stationary and in dynamic states, and the fuzzy control method is robust to the changes of engine parameters.
文摘MODIS数据具有数据量大,波段多等特点,用现有遥感软件进行几何校正,人机交互多且耗时较长,导致图像处理效率低下。本文采用基于三角网的几何校正算法,在几何校正的过程中把影像分块,各块的校正算法相互独立,计算完毕后再进行拼接。本文作者用IDL(Interactive Data Language)编写了相关程序,运行结果表明,这种方法占用内存小,计算速度快,可以提高MODIS数据处理效率。
