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按分类查找All 系统设计方案(86) 
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[系统设计方案] Plasma-Sheath-Channel

这篇文章主要讲述了等离子鞘套的信道特征,包括电子密度的分布还有以此关于天线位置的安装等问题,得出结论可以建模为快衰落的莱斯信道,对于临近空间飞行器的通信问题提供了理论依据,但鞘套内部通信特征还是一大问题
This article describes the plasma sheath channel characteristics, including the distribution of electron density and thus the installation of the antenna position on issues such as the conclusion can be modeled as fast fading fading channels, for the approaching spacecraft communications problem provides a theoretical basis, but features an internal communication sheath or a big problem (2013-10-30, matlab, 209KB, 下载19次)

http://www.pudn.com/Download/item/id/2387179.html

[系统设计方案] Mitigating-Hypersonic-Vehicle

这篇文章是美国在公共期刊上发表的关于临近空进飞行器在等离子鞘套环境下的通信黑障问题,回顾了目前位置减少通信中断的许多方案,但是通信黑障依然是临近空间测控的一大问题,对于其中环境的特征以及通信体质的建立都是非常热门也是非常重要的。
This article is published in the United States in the public journals on near-space vehicle in the plasma sheath environment communication blackout problem, review the current position of many programs to reduce traffic disruption, but the communication blackout is still near space monitoring and control of a big problem, for which the physical characteristics of the environment and the communication are very popular establishment is very important (2013-10-30, matlab, 1758KB, 下载23次)

http://www.pudn.com/Download/item/id/2387159.html

[系统设计方案] Moving-Target-Detection

针对视频监控系统中运动目标的检测与跟踪技术研究,本文比较运动目标检测的各种方法,采用背景差法来对运动目标进行检测,并阈值化和二值化检测出运动目标区域,能达到很好的检测效果。同时,利用卡尔曼滤波器对检测出来的运动目标进行预测和跟踪,实验验证跟踪效果较好。
To solve the moving target detection and tracking in video monitoring system,in this paper,the various methods of moving target detection can be compared,using the background difference method to detecting the moving target,and thresholding and bina- rization to detect moving targets regions,it has good detection results.Then using Kalman filter to detect the moving target and ex- perimental verification of tracking have better effects. (2012-03-12, matlab, 263KB, 下载65次)

http://www.pudn.com/Download/item/id/1791204.html

[系统设计方案] vector-control

当前,矢量控制是一种优越的交流电机控制方式,它模拟直流电机的控制方式使得交流电机也能取得与直流电机相媲美的控制 效果。依据矢量控制的基本原理和方法,用 456752 8 9:4 7:<= 模块构建了一个基于转子磁场定向的旋转坐标系下的交流异步 电机矢量控制系统仿真模型,对其速度控制器提出并设计一种模糊滑模变结构控制算法。该控制算法具备模糊逻辑控制和滑模 变结构控制两者优点,并且较好地解决了滑动模态的抖动问题。仿真结果表明了该设计的可行性以及具有良好的动静态性能、 较强的鲁棒性
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http://www.pudn.com/Download/item/id/1720218.html

[系统设计方案] noveldirecttorquecontrolofpmsmbasedonexpectedvolta

: 为了解决永磁同步电机传统直接转矩控制中存在转矩和磁链脉动大的问题,设计 了基 于 空间电压矢量调制( S V M) 策略的直接转矩控制 , 通过 S V M 产生定子的预期 电压,并且采用 P I 控制 器代替传统直接转矩控制中的滞环比较器。同时在定子磁链观测中采用基于转子位置和定子电流 的定子磁链估计方法。实验结果表明, 与传统直接转矩控制项相比, 所提出的方法能够可靠而有效 地估计定子磁链, 改善 了电磁转矩和定子磁链的脉动, 同时减小了电流和转速波动,并具有很好的 动 态、 静 态性能
t: To mi mmi z e t h e r i p p l e s o f t h e e l e c t r o ma g n e t i c t o r q u e a n d f lu x l i n ka g e p r o d u c e d i n t h e c 0 n v e n . t i o n a l d i r e c t t o I ’ q u e c o n t r o l( D T C)s y s t e m f o r p e r ma n e n t ma g n e t s y n c h r o n o u s mo t 0 r s( P MS M) , t h i s p a- p e r p r o p o s e s a s p a c e v e c t o r m o d u l a t i o n( S V M)s t r a t e g y o f D T C .T h e e x p e c t e d v o h a g e w a s p r o d u c e d b S VM.PI c o n t r o l l e r i n t hi s me t ho d wa s H s e d i n t h i s s t r a t e g y, i ns t e a d o f h y s t e r e s i s c o n t r o l l e r a n d s wi t c hi ng t a bl e i n c o n v e n t i o n a l di r e c t t o r qu e c o n t r o 1 . At t he s a t n e t i me, a n o v e l s t a t o r f l u x e s t i ma t o r wa s i n t r 0 . d u c e d.Th i s s c h e me e s t i ma t e d s t (2010-01-16, matlab, 490KB, 下载83次)

http://www.pudn.com/Download/item/id/1041962.html

[系统设计方案] FuzzyNeuralNetwork

本论文在较为系统地分析模糊神经网络理论和遗传算法基本原理的基础上,,提出一种基于补偿模糊神经网络的控制方法,通过补偿模糊推理和快速学习算法的引入,构造补偿模糊神经网络控制器,实现模糊网络结构和参数的优化及matlab仿真。
In this paper, in a more systematic analysis of fuzzy neural network theory and the basic principles of genetic algorithm based on the proposed compensation-based fuzzy neural network control methods, through the compensation of fuzzy inference and fast learning algorithm for the introduction of structural control CFNN , and the realization of fuzzy network structure and parameters optimization and matlab simulation. (2007-12-02, matlab, 597KB, 下载310次)

http://www.pudn.com/Download/item/id/368476.html
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