基于PIC＋FPGA飞机直流供电系统设备故障预测研究

针对飞机直流供电系统中直流设备工作情况，本文利用FPGA双进程有限状态机方法控制A／D转换器，快速准确采样多路信号。用模糊理论的建议语言规则，结合PIC单片机的控制优势，从而解决飞机直流供电系统设备故障预测报警。     

Decision-making of Aircraft Optimum Configuration Utilizing Multidimensional Game Theory

As multi-discipline coupling and components interference often affect the aircraft configuration decision-making and analysis during conceptual design process, this article presents an approach of multidimensional game theory based on aircraft components to deal with this problem. The idea is that the configuration decision-making process is regarded as the game for different disciplines and technologies, and the aircraft components are players. The payoff function with highest total gain means that according to the game protocols and multidimensional theory, the optimal aircraft configuration within the strategy set will be chosen. The decision-making model is applied to conceptual design process of the high altitude long endurance (HALE) unmanned aerial vehicle (UAV) based on the assessment of technological risk. The obtained optimum configuration is quite consistent with the current HALE UAV development trends. Thus, taking into account the coupling and interference factors, the multidimensional gaming model based on aircraft components will be an effective analysis method in the decision-making process of aircraft optimum configuration.     

原型理论对中国大学生英语词汇学习的启示

词汇学习是我国大学生英语学习的重点以及难点,传统的机械性背记方法耗时多,收效少。就提高我国大学生英语词汇学习效率这一问题,从认知语言学的原型理论出发,为我国大学生学习词汇提供了更科学,更高效的学习方法。     

安全阀性能检测系统的测量不确定度

分析了安全阀性能检测系统中的主要误差因素，对安全阀动作性能和排量系数的测量不确定度进行了初步计算。     

专用瞄准设备自动检定系统

介绍了专用瞄准设备自动检定系统的系统配置、工作原理及软件设计，并对系统的测量不确定度进行了分析和评定。     

Data fusion algorithm based on state and attribute parameter

Ａｑｕｅｓｔｉｏｎｔｈａｔｈａｓｂｅｅｎｃｏｎｃｅｒｎｅｄｆｏｒｍａｎｙｙｅａｒｓｉｎｔｈｅｍｕｌｔｉｔａｒｇｅｔｔｒａｃｋｉｎｇｆｉｅｌｄｉｓｈｏｗｔｏｒｅｄｕｃｅｔｈｅｃｏｍｐｕｔａｔｉｏｎａｌｃｏｍｐｌｅｘｉｔｙｏｆｄａｔａａｓｓｏｃｉａｔｉｏ...     

不依赖于分布的置信水平范围的估计方法

在已知合成标准不确定和假定包含因子的条件下，Ｂｉｅｎｇｙｎｅ－Ｃｈｅｂｙｓｈｅｖ不等式给出了置信水平（或置信概率）的取值范围，这个结果不依赖于被测量的概率分布的具体形式。     

UDu~T分解滤波算法及其应用

本文介绍UDU~T 分解滤波算法;用工程师容易理解的方法重新推导时间修正和量测修正滤波公式,并给出标准通用的UDU~T 分解滤波子程序。本算法子程序已实际用于工程估计器中。本算法具有高的数字稳定性。作为UDU~T 分解滤波算法理论和工程应用之间桥梁的本通用标准子程序具有良好性能,使用方便,极易推广应用。     

不确定度评定的一种新方法──最大方差法

研究了不确定度评定的新方法──最大方差法，分析了它的原理，列出了最大方差法用表，举例说明了它的应用。     

New evidence for strong non-thermal effects in Tycho’s supernova remnant

For the case of Tycho’s supernova remnant (SNR), we present the relation between the blast wave and contact discontinuity radii calculated within the nonlinear kinetic theory of cosmic ray (CR) acceleration in SNRs. It is demonstrated that these radii are confirmed by recently published Chandra measurements which show that the observed contact discontinuity radius is very close to the shock radius. Therefore a consistent explanation of these observations can be given in terms of efficient CR acceleration which makes the medium more compressible.