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介绍了有源电力滤波器(APF)的基本原理的基础,具体分析了有源滤波器控制系统的硬件结构和软件流程,阐述了基于TMS320F2812数字信号处理器的有源滤波控制器设计.最后通过实验数据.验证了该控制器的正确性和有效性. 相似文献
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高速公路长上坡路段路面病害处治技术 总被引:1,自引:0,他引:1
本文针对高速公路长上坡路段出现的路面病害,根据历年的路面病害处治经验,提出了路面病害处治的方案,并成功组织实施,供同类路面的设计、养护参考。 相似文献
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针对无人驾驶车辆的轨迹跟踪和避障问题,基于模型预测控制算法设计了避障轨迹跟踪控制器,实现避障和轨迹跟踪功能。在不同车速下采用Matlab和CarSim进行联合仿真试验,结果表明:设计的控制器控制性能和稳定性良好,能满足无人驾驶车辆的避障和轨迹跟踪需求。 相似文献
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2006年3月9日,中国最大的国际汽车用品及改装汽车专业大展:2006中国国际汽车用品展览会暨国际改装汽车展览会(简称CIAACE2006)在北京农业展览馆新馆隆重开幕,这是目前中国规模最大.档次最高.影响力最强的关于汽车后市场产品及服务的展会。这是车迷们的节日,也是众多车商们一年一度展示汽车用品行业最新状况.汽车改装行业最新潮流的完美平台。展会人潮涌动,盛况空前的场面确实让记者有些始料不及。594家来自国内外的汽车用品及改装企业,1000多种汽车周边的新品会聚于此,仅开幕当天上午,来自世界各地的专业观众、汽车爱好者就多达6000人次。北京亚运村汽车交易市场负责人兴奋地告诉记者:“这是中国汽车爱好者的一个节日!”[编者按] 相似文献
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Simulation of the oil spill processes in the Sea of Japan with regional ocean circulation model 总被引:1,自引:0,他引:1
Sergey M. Varlamov Jong-Hwan Yoon Naoki Hirose Hideyuki Kawamura Ken Shiohara 《Journal of Marine Science and Technology》1999,4(3):94-107
A simulation of the movement of spilled oil after the incident of the Russian tanker Nakhodka in the Sea of Japan, in January 1997, was performed by a particle tracking model incorporating advection by currents, random
diffusion, the buoyancy effect, the parameterization of oil evaporation, biodegradation, and beaching. The currents advecting
spilled oil were defined by surface wind drift superposed on the three-dimensional ocean currents obtained by the Geophysical
Fluid Dynamics Laboratory modular ocean model (GFDL MOM), which was forced by the climatological monthly mean meteorological
data, or by the European Center for Medium Range Weather Forecasts (ECMWF) daily meteorological data, and assimilated sea
surface topography detected by satellite altimeter. A number of experiments with different parameters and situations showed
that the wide geographical spread of oil observed is not explained by wind drift alone, and that including the simulated climatological
currents gives better results. The combination of surface wind drift and daily ocean currents shows the best agreement between
the model and observations except in some coastal areas. The daily meteorological effect on the ocean circulation model results
in a stronger variability of currents that closely simulates some features of the nonlinear large-scale horizontal turbulent
diffusion of oil. The effect of different parameterizations for the size distribution of model oil particles is discussed.
Received for publication on July 26, 1999; accepted on Nov. 17, 1999 相似文献
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Ken Takagi 《Journal of Marine Science and Technology》2006,11(2):100-110
The diffraction and radiation problems of a two dimensional multihull structure were investigated by application of the scattering
matrix theory. The scattering matrix theory is widely used to analyze wave interaction problems in various scientific fields.
The research is focused on the zeros of the wave exciting force near resonance, which occurs both in the diffraction problem
and the radiation problem. At the zeros of the wave exciting force, the wave exciting force for the overall structure is zero,
but each demihull undergoes wave excitation. At near-resonant frequencies, the amplitude of the traveling wave between adjacent
demihulls becomes very large and the demihulls experience very large wave forces. A number of simple equations for representing
the hydrodynamic properties of the multihull structure at the zeros and near-resonant frequencies are obtained. Numerical
examples show that these simple equations well explain the hydrodynamic forces and the wave system in the spaces between the
demihulls. 相似文献
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根据隧道火灾的特性,通过参照DIN53436标准建立的燃烧装置,在室内模拟汽油、柴油和煤油的不完全燃烧,并测定燃烧过程的O_2浓度、CO_2浓度、CO浓度和温度变化,证实其不完全燃烧程度符合ISO标准规定的要求。 相似文献
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