A new method to process muzzle displacement transducer data has been developed and demonstrated on 5.56 and 40 mm weapon systems. The method allows much more flexibility in the placement of the measurement probes in a test fixture with no loss in measurement fidelity. The method also allows measurements to be taken with as few as two probes per axial measurement location, whereas previously used techniques required four probes.

关键词：枪鼻;运动;探针;邻近设备;传感器;枪口运动;接近探针;涡流探测器;测试方法

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This report is a comparison between a newly developed method and a well proven analysis process to measure the pitch and yaw behavior of an artillery projectile following cannon launch. In the new method, launch video is processed using automated computer-vision algorithms to estimate a projectile's orientation history in the interval of video coverage. For the experiments covered by this report, this interval extended from the muzzle to approximately 70 80 m downrange. The accuracy of the method's results is validated by comparing them to results obtained from processing of high- fidelity onboard measurements using the vectoring technique known as Projectile Orientation In Navigation TERms (POINTER). From this evaluation, it is shown that the automated video analysis method is correctly measuring the epicyclic motion of the projectile during the portion of flight captured by the video (first two nutation cycles). Included in the report is a general introduction of both analysis methods, as well as a brief overview of other techniques used by aeroballisticians to characterize the flight mechanics of artillery projectiles. The limits and advantages of the various methods are discussed, and future research efforts to improve results and overcome some of the shortcomings of the automated video method are identified.

关键词：炮弹;自由飞行;沥青(运动);轨迹;视频信号;偏航;自由飞行试验;倾斜和偏航测量;高速度视频;车载仪表;遥测

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Type-2 fuzzy sets (T2 FSs) have been shown to manage uncertainty more effectively than type-1 fuzzy sets (T1 FSs) in several areas of engineering. However, computing with T2 FSs can require an undesirably large amount of computations since it involves numerous embedded T2 FSs. To reduce the complexity, interval type-2 fuzzy sets (IT2 FSs) can be used, since the secondary memberships are all equal to one. In this chapter, three novel interval type-2 fuzzy membership function (IT2 FMF) generation methods are proposed. The methods are based on heuristics, histograms, and interval type-2 fuzzy C-means (IT2 FCM). For each method, the footprint of uncertainty (FOU) is only required to be obtained, since the FOU can completely describe an IT2 FMF. The performance of the methods is evaluated by applying them to back-propagation neural networks (BPNNs). Experimental results for several data sets are given to show the effectiveness of the proposed membership assignments.

关键词：信息系统；样本数据；模糊隶属函数

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关键词：汽车；卷积码；网格图；编码效率； FPGA

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Traditionally there has been a distinction between Combinatorial Solid Geometry (CSG) modeling systems and Sculptured Surface Design modeling systems. CSG modeling systems largely model parts which are unsculptured and consist of combinations of common shapes like spheres, prisms, ellipsoids, and the like. These shapes are represented as planar half spaces, and algebraic quadratic surfaces. The boolean combination of these surfaces is usually performed by ray-tracing. Sculptured Surface Design concerns itself with modeling the surface of an object, i.e., the boundaries of an object like an aircraft, a ship, or an automobile. The boundaries are represented by using parametric tensor-product surfaces consisting of Bezier curves and Nonuniform Rational B-spline Surfaces (NURBS). There are many times however, when both modeling approaches are needed. In particular it is often desirable to introduce free-form surfaces into the CSG system. Recent advances in ray- tracing free-form surfaces have allowed the integration of free-form objects in CSG systems. This presentation will discuss the development and integration of NURBS into the Ballistics Research Laboratory CSG modeling system.

关键词：汽车；计算机图形几何；模型；光线跟踪

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Simulation model of automobile power train has been built using ADVISOR,on the basis of Genetic Algorithm Tool Box,the paper takes a mini car as example to carry out performance simulation calculation and power train parametric optimization design.The result show that automobile power performance and fuel economy and emission performance have been greatly improved The power train has great influence on automobile power performance and fuel economy and emission performance.It is an important approach to optimize its matching parameters on reducing the fuel wastage,improving dynamical performance and decreasing the emission of waste gas.Genetic Algorithm is kind of global searching and optimized algorithm which integrates the principles of biological evolution with optimization technology and computer technology.ADVISOR,advanced simulation software,was developed on the basis of MATLAB/Simulink and can rapidly analyze automobile power performance,fuel economy and emission performance.It is a better approach to cope with automobile power train match optimization by integrating ADVISOR's accurate simulation with Genetic Algorithtn's searching optimization with high efficiency.

关键词：汽车;顾问;汽车动力系统;多目标优化

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Automobile information on internet increases fast as the quick development in automobile information construction.However,general search engines are unable to meet the increasing demand for accurate searching of automobile information.The present paper reports the designing and implementation of a vertical search engine of automobile information by adopting vector space model to identify the automobile subject,and combine content analysis and link analysis.This search engine was proven making the result more reasonable and effective and thus increasing the rate of accuracy of search engine.

关键词：汽车；垂直搜索引擎；汽车资讯；主体识别

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本刊以七大战略性新兴产业——节能环保、新一代信息技术、生物、高端装备制造、新能源、新材料、新能源汽车为研究重点，关注国家高层和各部委的动态，剖析国家和地方的新兴产业政策。本刊设有政策导读、领导讲话、七大战略性新兴产业本周国内外行业动态和重点企业新闻、投资专题四大板块，能够实时监测新兴产业和重点企业动态，把握新兴产业发展方向，研究发展重点，寻求发展机遇。

关键词：节能环保；新一代信息技术；生物；高端装备制造；新能源；新材料；新能源汽车

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Because the passive mount could not meet the requirements of vibration isolation and noise reduction for vehicle,the semi active mount and active mount were considered as the developing trend of reducing vibration and noise.An active vibration control system consists of a sensor and an actuator together with a control unit.The development of the systems is often limited by the chosen actuator technology.This article list the common engine vibration control system actuator,analyzing their respective performance summed up their role in the control of vibration and trends.

关键词：发动机振动控制;执行器;半主动

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In this paper,based on characteristic analysis of driver training operation,a new approach of information acquisition for driver training is found,which is through extracting acceleration information.The information acquisition device which is under MEMS three-axis acceleration transducer,based on ADXL335 and MCU,can achieve real-time and accurate measurement of vehicles' three-dimensional acceleration.By comparing the change curve of measured acceleration with the related data of good driver,the existing problems will be found out.In this way,the driver training operation can be assessed in a timely way.

关键词：汽车；MEMS传感器；汽车驾驶员；培训操作

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