MSPWVD-HOUGH变换的多目标分辨和雷达回波参数估计

传统的时频分析方法,如Winger Ville Distribution,smoothed pseudo Wigner-Ville distribution等在多目标分辨的时候,无法同时在时频分辨率和抑制交叉项两方面同时达到较好的效果,所提出的MSPWVD解决了这一问题,MSPWVDHOUGH还可在低信噪比的情况下检测出多目标,并估算其参数,可利用来进行雷达成像的运动补偿.     

《现场混装炸药车》标准现状及修订建议

现场混装炸药车作为爆破自动化的代表已经越来越多地被国内矿山、水利、交通等部门所认识和应用。本文着重对《现场混装炸药车》标准进行了剖析,并结合国家已有产业政策对标准提出了一些修订建议。     

火焰原子吸收光谱法测定铝合金中的镁元素

本文研究了用火焰原子吸收光谱法测定铝合金中镁的含量时,酸度、干扰元素、干扰抑制剂的加入量对测定结果的影响。通过大量实验的反复验证,确定了测定铝合金中镁元素含量的最佳工作条件,并在最佳工作条件下测定5个标准试样,准确度高,从而证明了本方法的可行性。本方法测定镁的范围为：0．005％～5．00％,检测限为：0．015μg·mL^-1,特征浓度：0．07μg·mL^-1。     

智能工具机通信子系统的设计与实现

智能工具机(ITM)系统采用主辅机结构,Micro VAX作为前端机。本文给出该系统中完成前后端机信息交换的通信子系统设计方案,介绍在VAX/VMS环境中实现并模拟运行该通信子系统的主要技术。     

Directional change‐point detection for process control with multivariate categorical data

Most modern processes involve multiple quality characteristics that are all measured on attribute levels, and their overall quality is determined by these characteristics simultaneously. The characteristic factors usually correlate with each other, making multivariate categorical control techniques a must. We study Phase I analysis of multivariate categorical processes (MCPs) to identify the presence of change‐points in the reference dataset. A directional change‐point detection method based on log‐linear models is proposed. The method exploits directional shift information and integrates MCPs into the unified framework of multivariate binomial and multivariate multinomial distributions. A diagnostic scheme for identifying the change‐point location and the shift direction is also suggested. Numerical simulations are conducted to demonstrate the detection effectiveness and the diagnostic accuracy.© 2013 Wiley Periodicals, Inc. Naval Research Logistics, 2013     

微胶囊技术简介

微胶囊技术能够使物质产生物态变化,实现物质的固化,在医药、农药、食品、饲料、涂料、油墨、黏合剂、洗涤剂、感光材料、纺织等行业,都得到了广泛的应用。介绍了微胶囊技术的发展史,微胶囊的组成与制备方法,微胶囊的性质及应用．     

Barrier Lyapunov functions-based dynamic surface control with tracking error constraints for ammunition manipulator electro-hydraulic system

This paper focuses on the dynamic tracking control of ammunition manipulator system. A standard state space model for the ammunition manipulator electro-hydraulic system (AMEHS) with inherent non-linearities and uncertainties considered was established. To simultaneously suppress the violation of tracking error constraints and the complexity of differential explosion, a barrier Lyapunov functions-based dynamic surface control (BLF-DSC) method was proposed for the position tracking control of the ammunition manipulator. Theoretical analysis prove the stability of the closed-loop overall system and the tracking error converges to a prescribed neighborhood asymptotically. The effectiveness and dynamic tracking performance of the proposed control strategy is validated via simulation and experi-mental results.     

红外警戒系统点目标检测距离理论分析

给出了红外警戒系统点目标探测距离的计算模型与公式,分析了影响点目标探测距离的参数间关系,并得出有关目标提取算法及传感器参数选择的几点重要结论.     

多微机系统VME总线控制器的设计与实现

文中给出了一个机械人力反馈依从控制用多微机系统的VME总线控制器的基本结构,给出了采用循环选择(RRS)优先策略裁决器的设计细节,指出了在设计过程中遇到的问题及其解决办法,最后以MSI、SSI给出了总线控制器的具体实现。     

热得快火灾危险性分析及火因鉴别方法的研究

本文以热得快火灾模拟试验为基础,结合其结构特点和实际火灾案例,分析了热得快火灾的形成原因,着重对如何鉴别热得快火灾残留物进行研究,归纳总结出根据热得快火灾残留物进行火灾原因鉴别的判定依据,建立了热得快火灾原因的鉴别方法,并提出了热得快火灾的预防措施。