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最优分布变换与微弱点状动目标检测技术

系统工程与电子技术 2003年第1期25卷 103-106页

作者：艾斯卡尔李在铭新疆大学信息科学与工程学院新疆乌鲁木齐830046 电子科技大学通信与信息工程学院四川成都610054

研究了微弱点状动目标序列图像观测模型、目标检测模型和最优分布以及最优分布变换。提出了一种基于准优分布变换的微弱点状动目标检测技术。经过变换 ,未知统计分布变为准高斯分布 ,提高了信噪比 ,改造了分布形状 ,获得了有利分布。并... 详细信息

研究了微弱点状动目标序列图像观测模型、目标检测模型和最优分布以及最优分布变换。提出了一种基于准优分布变换的微弱点状动目标检测技术。经过变换 ,未知统计分布变为准高斯分布 ,提高了信噪比 ,改造了分布形状 ,获得了有利分布。并将时空三维搜索简化为沿时间轴投影与二维空域搜索 ,实现了一种快速算法。pC仿真结果与国内外相应文献比较 ,在信噪比、检测概率与虚警概率方面具有更好的性能 ,且算法的实时性好。

关键词：微弱点目标运动目标红外图像序列目标检测分布变换

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一种新的虚拟维修手部动作生成方法

系统仿真学报 2008年第24期20卷 6736-6739,6753页

作者：李洁徐诚游向阳李高金南京理工大学机械工程学院南京210094 徐州空军学院徐州221002

在维修仿真中,虚拟维修人员的手部操作起着重要的作用,对维修活动中手部动作的实时、连贯生成问题进行了研究。首先提出了一种包含详细解剖结构的虚拟手模型,其次在分析总结各类虚拟人运动控制算法的基础上,通过加入阻尼系数以克服传统I... 详细信息

在维修仿真中,虚拟维修人员的手部操作起着重要的作用,对维修活动中手部动作的实时、连贯生成问题进行了研究。首先提出了一种包含详细解剖结构的虚拟手模型,其次在分析总结各类虚拟人运动控制算法的基础上,通过加入阻尼系数以克服传统IK算法难于或无法处理的奇异性、冲突性与多目标性问题,改进了阻尼IK方法,并利用Jacobi矩阵的正交投影来处理优先级多约束条件下的手部动作。最后以某型装备车辆的轮胎更换维修任务为例对提出的算法进行了验证和效果评估,表明了所提方法的有效性和健壮性。

关键词：虚拟维修手部动作维修智能体逆向运动学算法

Wireless sensor network for Continuous monitoring water quality in Aquaculture farm

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Wireless sensor network for Continuous monitoring water qual...

亚洲精细农业与计算机农业应用联合大会

作者： Daokun Ma 1 Qisheng Ding 1 2 Daoliang Li 1 Linlin Zhao 1 1 college of Information and Electric Engineering china agriculture university Beijing p. r. china 100083 2 School of Electrical Engineering and Automation Xuzhou Normal university Xuzhou p. r. china 221116

The Digital Wireless Monitoring System for water quality continuous measurement in aquaculture was developed based on IEEE802.15.4 standard and ZigBee. Multi-parameter water quality node, temperature chain node, routing node and an on-site monitoring center were designed and implemented. Multi-parameter water quality node was created for measurement of DO, EC, Water Lever and temperature in sea cucumber ponds. A temperature chain node is designed to monitor temperature profile change especially. Three types of energy supply were adopted to achieve demand of indoor and outdoor application in aquaculture farm. Both multi-parameter water quality node and temperature chain node are reduced funcition devices, which send measurement data to routing node. The routing node used to extend the range of continuous monitoring in aquaculture farm. The DWMS with six multi-parameter water quality nodes, two temperature chain nodes, three routing nodes and one on-site monitoring center was integrated and evaluated in Marine Aquaculture Demonstration Center, Dongying, Shangdong, ***. Continuous monitoring data revealed that the system based on WSN was cost effective, easy- to-use, and reliable.

关键词： aquaculture water quality measurement WSN ZigBee

The　effects　of　immobilization　on　physiology　and　ultrastructure　of　unicellular　alga　platymonas　subcordiformis

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Acta Oceanologica Sinica 1995年第2期14卷 269-275页

作者： Zhang Xuecheng Wu Xiaonan and Li Yonghong(college of Marine Life sciences, Ocean university of Qingdao, Qingdao 266003, china Institute of Oceanology, Academia Sinica, Qingdao 266071, china)

In the present paper, the unicellular green alga platymonas subcordiformis was entrapped in 2% (W/V) alginate, treated with CaCl2 at different concentrations (0. 5, 0.75, 1. 0, 1. 5 and 2. 0 mol/dm3), cultured at 15℃ and 25℃. The growth rate and morphology were studied and photosynthesis and respiration rates were measured. The optimum conditions of immobilized culture is in 0. 5 mol/dm3 of CaCl2, at 25℃. photosynthesis rate of immobilized cells is higher than free cultivated cells, and that at 15℃ than at 25℃. Under scanning electronic microscope, it was shown that the immobilized cells had larger size and rougher surface. The relationship between growth of immobilized cells and abiotic factors and the prospects of applying immobilized cultivation are also discussed.

关键词： platymonas subcordiformis immobilization photosynthesis respiration ultrastructure

Adaptive Control of a Class of Nonlinear Systems in the presence of Actuator Saturation

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Adaptive Control of a Class of Nonlinear Systems in the Pres...

2010 Chinese Control and Decision Conference

作者： Xianji Meng~(1,2),Guanghong Yang~2 1.college of Mathematics and Systems science,Shenyang Normal university,Shenyang 110034,china 2.college of Information science and Engineering,Northeastern university,Shenyang 110004,china

＜正＞This paper presents a method for the analysis and control design of nonlinear systems in the presence of actuator *** system under consideration is subject to input ***,we design a control law v by adapting Backstepping ***,we give a region,such that v≤1 in the *** can ensure stability of the saturated closed-loop system based on the use of a suitable Lyapunov function.

关键词： Actuator saturation Nonlinear system Domain of attraction

Effect of parameters on Synthesis of Silica Aerogels

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Effect of Parameters on Synthesis of Silica Aerogels

中国颗粒学会第六届学术年会暨海峡两岸颗粒技术研讨会

作者： Hui Wang~1,Jianxin Cao~2,Lingke Zeng~1 (1.college of Materials science & Engineering,South china university of Technology,Guangzhou,Guangdong 510640,china 2.college of Chemical Engineering,Guizhou university,Guiyang,Guizhou 550003,china)

Silica aerogels were synthesized by the sol-gel polymerization of tetraethylorthosilicate(TEOS) followed by supercritical drying(SD) at 300℃and *** influences of water/TEOS,ethanol/TEOS,activator dosage and pH value on the gelation time and the pore structure of SiO aerogel during the process were *** results show that the gelatinizing time became longer at higher water/ethanol content,at first it was decreased with pH value and HF content increased and then it was *** porous structure was measured by nitrogen adsorption *** content of HO had a dominant effect on the pore size distributions and the pore *** pore diameter become greater and the pore size distribution appeared widen when pH value *** with the content of HF increasing the pore diameter become smaller and the pore size distribution narrow at first,and then the pore diameter become greater and the pore size distribution widened.

关键词： Silica aerogels synthesis parameters porous structure

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车牌照定位及倾斜校正方法研究

系统工程与电子技术 2004年第2期26卷 237-239页

作者：张兴会刘玲杜升之陈增强袁祉天津职业技术师范学院计算机系天津300222 南开大学自动化系天津300071

针对车牌照自动化管理中需要对采集到的车牌照图像进行自动校正和去除背景的处理问题,在传统的集合参数提取方法———Hough变换基础上,提出了一种实现对车牌照图像进行定位和倾斜校正的方法。根据车牌照自身特点,对对称Hough变换作出... 详细信息

针对车牌照自动化管理中需要对采集到的车牌照图像进行自动校正和去除背景的处理问题,在传统的集合参数提取方法———Hough变换基础上,提出了一种实现对车牌照图像进行定位和倾斜校正的方法。根据车牌照自身特点,对对称Hough变换作出改进和剪裁,使得该方法可对平行四边形形状的车牌照进行检测。测试证明,该方法缩短了计算时间,减小了空间复杂度。

关键词：对称Hough变换车牌照图像自动化管理定位倾斜校正图像处理

Optimal Design of Neuro-Fuzzy Controller Based on Ant Colony Algorithm

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Optimal Design of Neuro-Fuzzy Controller Based on Ant Colony...

第二十九届中国控制会议

作者： ZHAO Baojiang Department of Mathematics,Mudanjing Teachers college,Mudanjing Heilongjiang 157012,p.r.china

An adaptive ant colony algorithm is proposed based on dynamically adjusting the strategy of the trail information *** algorithm can keep good balance between accelerating convergence and averting precocity and *** results of function optimization show that the algorithm has good searching ability and high convergence *** algorithm is employed to design a neuro-fuzzy controller for real-time control of an inverted *** order to avoid the combinatorial explosion of fuzzy rules due to multivariable inputs,state variable synthesis scheme is employed to reduce the number of fuzzy rules *** simulation results show that the designed controller can control the inverted pendulum successfully.

关键词： Neuro-Fuzzy Controller Ant Colony Algorithm Function Optimization Genetic Algorithm Inverted pendulum System.

research on Typical Faults Test and Simulation for Artillery

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Research on Typical Faults Test and Simulation for Artillery

2007 8th International Conference on Electronic Measurement & Instruments（ICEMI’2007）

作者： Cao Lijun 1 Hu Huibin 2 Shao Xinjie 1 Tian Guang 1 1.Shijiazhuang Mechanical Engineering college,Shijiazhuang 050003 china,2.Shijiazhuang Army Command college,Shijiazhuang 050084 china

To illustrate the typical fault test and simulation technologies for artillery,three key aspects are discussed in detail,which are selections of characteristic parameters,dynamic fuzzy inference and virtual *** denote and analyze the typical faults,an index system is proposed from mission reliability *** to the deficiencies of traditional fuzzy evaluation method,a new dynamic fuzzy inference method is put forward and adopted into fault forecast *** simulate the typical fault emergence and development process,virtual prototype of large-caliber artillery is established and four groups of fault relationships are given as simulation *** on the fault test and simulation system,severe faults will be predicted and commander can determine corresponding campaign decision and maintenance decision.

关键词： Fault test Fault forecast Virtual prototyping Simulation Artillery