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1.
美潜射导弹伺服系统的指标体系包括定性指标和定量指标,定量指标包括故障检测率、故障膈离率、故障虚警率等,根据该型导弹伺服系统的特点,提出了测试性指标的分析验证方法和步骤,重点讨论了测试性指标验证样本量的确定方法、故障注入模式的选取原则、故障模式分配原则以及对系统测试性的评定依据。  相似文献   

2.
面向任务的舰炮制导弹药测试性指标确定方法   总被引:1,自引:0,他引:1  
针对国内目前在确定舰炮制导弹药测试性指标方面缺乏科学合理的理论和方法的问题,提出了确定舰炮制导弹药测试性指标的方法。该方法结合舰炮制导弹药结构和使用特点,在测试需求和任务划分的基础上,建立测试性指标之间的定量关系;通过权衡分析,确定了各测试性指标的范围。计算结果表明,制导弹药需要较高的战备贮存,以弥补维修能力的不足;确定适当的检测周期能很好地保证其贮存阶段稳态可用度;制导弹药在舰艇携行阶段,为满足任务成功率,有最大携行周期,在最大携行周期内进行周期检测是有必要的。  相似文献   

3.
基于多指标决策的武器装备作战效能综合评估   总被引:4,自引:0,他引:4  
张超  马存宝  胡云兰  许家栋 《兵工学报》2006,27(6):1081-1085
综合评述了作战效能评估方法,分析了各种方法的适用范围并对比了其优劣。根据作战效能的特点与系统工程思想,提出了基于多指标决策的武器装备作战效能评估模型。针对作战指标的相对性、模糊性和灰色性,运用灰色关联投影法定量计算得到武器装备作战效能的综合评估值,并依此对武器装备进行排序。通过3种型号潜射鱼雷的实例验证了该模型和算法的工程实用性,其评估结果表明该方法比模糊关联法和灰色关联法更有效。  相似文献   

4.
为了对确定装备重要功能单元进行辅助决策,针对现有确定装备重要功能单元方法的不足,介绍了区间 数多指标决策问题,结合各属性指标的优先性,对传统的区间数TOPSIS 方法进行改进,提出了一种考虑属性优先 级的区间数TOPSIS 方法来确定装备重要功能单元。实例应用结果表明:该方法既能保证确定重要功能单元的客观 性,又能反映不同决策的风险程度,同时,该方法运算简单,易于计算机编程实现,具有较强的应用性和推广性。  相似文献   

5.
为了对确定装备重要功能单元进行辅助决策,针对现有确定装备重要功能单元方法的不足,介绍了区间 数多指标决策问题,结合各属性指标的优先性,对传统的区间数TOPSIS 方法进行改进,提出了一种考虑属性优先 级的区间数TOPSIS 方法来确定装备重要功能单元。实例应用结果表明:该方法既能保证确定重要功能单元的客观 性,又能反映不同决策的风险程度,同时,该方法运算简单,易于计算机编程实现,具有较强的应用性和推广性。  相似文献   

6.
基于均匀分布的假定前提并利用正态分布的特性,分别给出了火箭子母弹单发母弹的子弹散布等效圆半径以及散布均匀性的指标确定和评定方法。该方法考虑了子弹回收率对散布半径的影响,并列举了两个实例。  相似文献   

7.
为解决改进性维修效果评价过程主观因素较强、评价权重不一致等实际问题,建立了模糊综合评价模型;通过分析改进性维修效果评价的主要指标,建立可靠性、维修性指标模型,应用模糊综合评价法进行评价,对其适用性进行分析,并进行示例验证;该方法能准确得到改进性维修效果的量化数值和评价结果,可为改进性维修效果评价提供理论支持。  相似文献   

8.
为了解决军车交通事故频发的问题,抓住了军车驾驶员这一主要诱发因素,进行了军车驾驶员适任性的评估研究。在分析影响军车驾驶员适任性主要因素的基础上,依照指标评估选取原则,构建了军车驾驶员适任性评估指标体系。在详细分析适任性评估指标体系各指标的基础上,采用多层次模糊评估的理论,建立了军车驾驶员适任性多层次模糊评估模型,并举例验证了该理论评估模型。  相似文献   

9.
何成铭  李文鹏  冯靖 《四川兵工学报》2010,31(10):128-130,140
在分析DEA(data envelopment analysis)和G1法确定权重的基础上,提出了基于DEA和G1法的指标综合赋权方法。该方法在克服原DEA和G1法缺点的基础上,综合了二者各自的优点,使最终所确定的权重具有主、客观相结合的特点,更加科学合理。以装甲装备维修性评估为例,说明了基于DEA和G1法的指标综合赋权方法的应用步骤。  相似文献   

10.
空空导弹测试性验证应用研究   总被引:1,自引:1,他引:0  
对空空导弹测试性指标验证的主要内容、参数、试验结果的评估方法进行了研究。根据空空导弹特点,提出了测试性指标验证样本量的确定方法、故障注入模式的选取原则、试验结果的判定依据。  相似文献   

11.
Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily.  相似文献   

12.
The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS (geographical information system) data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms.  相似文献   

13.
By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly.  相似文献   

14.
The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite.  相似文献   

15.
Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.  相似文献   

16.
An expression for estimating the aeroheating on a warhead nose at different supersonic speeds is proposed by incorporating CFD (computational fluid dynamics) and the least-square method. Compared with the traditional estimation formula, the expression is more accurate, convenient and can be used in the optimized design of warheads. The error from the result obtained in the test of a ball cartridge flight is less than 3 %. It satisfies the engineering requirements.  相似文献   

17.
The nonlinear dynamic model of spinning ballistic missiles is established during the first boosting phase of the missile. Based on the conventional backstepping sliding mode control and the assumption of a two time-scale separation of missile dynamics, a graded sliding mode controller is designed with two sub-sliding surfaces which have invariability to external disturbances and parameter perturbations, and a matrix which comprises three first order low pass filters is introduced to prevent "explosion of terms". Owing to the upper bounds of the uncertainties are difficult to obtain in advance, adaptive laws are introduced to estimate the values of the uncertainties in real-time. Eventually, the numerical simulation results given to show the proposed controller can ensure the steady flight of missiles.  相似文献   

18.
By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux (kernel version 2.6.11 ) is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.  相似文献   

19.
For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further.  相似文献   

20.
阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅(LTNR)的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明:一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。  相似文献   

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