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From the lifespan of relay point of view, a reliability criterion was provided based on dynamic characteristics of anti-forces. Mathematical model of tolerance design with reliability was set up under usage of "stress-strength interference method", taken some critical dynamic characteristics as identification objects such beginning of contact separation speed, speed of collision and gag bit impact velocity. This model showed that lower values of characteristic parameters center and quantitative descriptively relationship between tolerance and product reliability. Multi-objective optimization model of relay tolerance distribution was completed when some factors such as reliability, processing costs and its feasibility into consideration. Based on Analytic Hierarchy Process to determine weight coefficients of various objectives, and usage of simulated annealing, this study performed optimal reliable tolerance allocation of space electromagnetic relay, and then key technology segments were analyzed, accompanying its course measured by controlling chart.

从继电器电寿命的角度,基于动态吸反力特性的配合提出了继电器的可靠性判别准则;在此基础上以触点分离初速度、触点碰撞速度以及衔铁碰撞速度等关键动态特性为判别对象,采用"应力-强度干涉法"建立了继电器可靠性容差设计数学模型,给出了下位特性参数中心值及其容差与产品可靠度之间的定量描述关系;综合考虑可靠度、加工成本及加工可行性等因素建立了继电器容差分配的多目标优化模型,基于层次分析法确定了各目标的权重系数,并采用模拟退火法实现了航天电磁继电器的可靠性容差最优分配;研究了继电器的关键工艺环节,并通过控制图对其过程能力进行了分析。

According to the three criteria, an appropriate doorsill is found by adaptively adjusting a discount factor in the process of iteratively solving. 2. 3 Method of Processing the Deleted Elements According to the doorsill, the continuous topological variables can be regressed to the 0-1 type discrete topological variables.

2.2 调整折减系数搜索最佳阈值为了能使程序快速准确的得到满足约束的最优拓扑结构,根据框架结构的特性引入结构非奇异、结构响应不被违背和结构重量不改变三个准则判断迭代收敛,并根据这三个准则的满足情况,在优化迭代过程中自适应的调整折减系数来搜索最佳阈值。

Stochastic process ; Regionalized variable ; Variogram ; Optimum unbiased estimate

随机过程;区域化变量;变异函数;最优无偏估值

Along with the increase of the density,the unconfined compression strength increases straightly.Under the same density,...

在实际施工过程中,建议尽可能的增加固化土的密度,压实度控制至少超过0.94;混合料的含水率控制在最优含水率的80%~90%之间。

The method solves the limitation of converging to the local infinitesimal point in medical image segmentation,and adopts the initial algorithm to assure the initial searching scope of genetic algorithm which is better accommodable than standard genetic algorithm with fuzzy C-means clustering,speeding up the convergence of genetic algorithm.

该算法除了解决模糊C均值聚类算法在医学图像分割中容易陷入局部最优解的问题,而且采用的初值化算法比标准的遗传模糊C均值聚类算法能确定更合适的遗传算法的初始搜索范围,从而加速了遗传算法的收敛过程。

And an on-line adaptative training algorithm of the weights of neuron is given, which enhances fusion precision of the model, fault tolerance and adaptive ability for subsystems 4 In order to diagnose the soft fault of integrated system, a new fault detection method is proposed based on federated filter, which can detect fault of system in short interval and greatly enhance the method sensitivity to fault A fault diagnosis method of Dynamically Tuned Gyro baesd on parameter estimation of kinetics model of rotor, and signal pretreatment, parameter estimation and strategy of fault identification are studied in detail The method can locate fault of DTG correctly and effectively, which provides a new approach and idea for gyro fault diagonsis 5 In order to diagnose the hard fault of integrated system, fault tree analysis is studied on fault disgnosis of integrated system circuits, and the hardware and software of disgnosis system are developed, with faults located to main module and circuit For futhur diagnosis, an optimal measurement technology in detection of circuits is discussed by improving an algorithm based on information theory, and a pratical method based on half-split method is proposed.

针对组合系统的软故障诊断问题,提出了基于联合滤波模型的一种新的故障检测算法,给出了算法的理论推导过程,该算法能在较短的时间内检测出系统故障,提高了算法对故障的敏感度;研究了基于动调陀螺转子动力学模型参数辨识的故障诊断方法,就其中的信号预处理、参数辨识及故障决策方法等关键技术进行了详细的研究,该方法可以正确、有效地检测与定位动调陀螺故障,为陀螺故障诊断提供了新的途径和思路。 5。针对组合系统的硬故障诊断问题,研究了基于系统浅知识推理的故障树法在组合系统电路子系统故障诊断中的应用,开发了相关诊断系统的软硬件,故障可定位到系统的主要功能模块和电路板级。为了进一步的故障定位,研究了电路板故障的最优检测问题,完善了基于信息理论的优化算法,并提出了基于&对分法&的一种实用的优化算法,故障可定位到电路板的主要功能元件级。在组建的SINS/GPS组合系统实验平台上,针对上述研究内容,进行了大量的实验研究。

Negotiation procedure under this strategycan obtain balanceable and pareto optimal results, whose time complexity is lower.

利用该策略,协商过程能获得平衡解和帕累托最优解,且时间复杂性较低。

Retroreflector array is used as pseudo phase conjugator in the system. The fidelity of the conjugate wave and matching problem of the retroreflector array and Hartmann-Shack wavefront sensor is discussed. Several data fusion methods are presented in order to having two Hartmann-Shack wavefront sensors control one set of wavefront corrector. The misalignment errors of Hartmann-Shack wavefront sensor and arrangement errors of wavefront sensor and deformable mirror are analyzed. At the same time, numerical work based on the data of practically system, such as 61 element AO system, are done corresponding to the problem respectively and the results are given.The system of CP/CM AO is setup to fulfill all the functions.

针对不同的应用环境,提出了四种CP/CM衍生光路;进行了关键器件——角反射器阵列的保真度分析,给出了角反射器阵列作为伪相位共轭器件,与哈特曼—夏克波前传感器的匹配条件,认为角反射器阵列的布局要与哈特曼波前传感器的微透镜阵列布局完全对应,才能达到最优探测效果;提出了四种双哈特曼传感器控制一套波前校正器的数据融合方式,并逐一进行了分析,认为加修正因子斜率融合和电压融合方式在目前工程中是适用的,并进行了相应的数值模拟;给出了哈特曼传感器自身的调整误差分析过程,得到了误差可通过常规标定消除的判断依据;通过数值计算,得到了常规自适应光学系统和CP/CM系统哈特曼传感器和变形镜的对准误差对系统性能的影响,给出了两种系统对于不同对准误差情况下校正效果的变化情况和相应系统容限;以37单元自适应光学系统为基础,搭建了CP/CM自适应光学系统光路,并完成了系列CP/CM功能实现实验,运用双哈特曼传感器数据融合,成功实现了CP/CM自适应光学系统的闭环实验。

Retroreflector array is used as pseudo phase conjugator in the system. The fidelity of the conjugate wave and matching problem of the retroreflector array and Hartmann-Shack wavefront sensor is discussed. Several data fusion methods are presented in order to having two Hartmann-Shack wavefront sensors control one set of wavefront corrector. The misalignment errors of Hartmann-Shack wavefront sensor and arrangement errors of wavefront sensor and deformable mirror are analyzed. At the same time, numerical work based on the data of practically system, such as 61 element AO system, are done corresponding to the problem respectively and the results are given. The system of CP/CM AO is setup to fulfill all the functions. Through the data fusion of two Hartmann-Shack wavefront sensors, the system runs successfully and realizes the close loop. It lays a good foundation for the application of CP/CM AO. Another aspect of this paper is to expand the working band of Hartmann-Shack wavefront sensor through Frequency Transfer of Nonlinear Optics.

针对不同的应用环境,提出了四种CP/CM衍生光路;进行了关键器件——角反射器阵列的保真度分析,给出了角反射器阵列作为伪相位共轭器件,与哈特曼—夏克波前传感器的匹配条件,认为角反射器阵列的布局要与哈特曼波前传感器的微透镜阵列布局完全对应,才能达到最优探测效果;提出了四种双哈特曼传感器控制一套波前校正器的数据融合方式,并逐一进行了分析,认为加修正因子斜率融合和电压融合方式在目前工程中是适用的,并进行了相应的数值模拟;给出了哈特曼传感器自身的调整误差分析过程,得到了误差可通过常规标定消除的判断依据;通过数值计算,得到了常规自适应光学系统和CP/CM系统哈特曼传感器和变形镜的对准误差对系统性能的影响,给出了两种系统对于不同对准误差情况下校正效果的变化情况和相应系统容限;以37单元自适应光学系统为基础,搭建了CP/CM自适应光学系统光路,并完成了系列CP/CM功能实现实验,运用双哈特曼传感器数据融合,成功实现了CP/CM自适应光学系统的闭环实验。

The optimization method is an effective tool in back-analysis of displacements of roadway, choosing the bad iteration method will lead to many problems, such as slow constringent speed, bad stability of solutions, local minimization.

最优化方法是进行巷道位移反分析的有力工具,如果优化迭代方法选择不当,将导致迭代过程收敛缓慢、解的稳定性差、陷入局部极小值等问题,不能保证搜索到全局最优解。

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推荐网络例句

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。

This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.

这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。