I/O模块的DeviceNet接口设计

简要分析了DeviceNet面向对象的应用层协议技术，并用Philips公司的P87C591在片CAN控制器芯片实现了对DeviceNet应用层协议核心的编制，给出了硬件连接电路。     

Stochastic Stability of Gene Regulatory Networks with Mixed Time-Delays

The stochastic stability problem was considered for a class of gene regulatory networks with mixed time-delays.The mixed time-delays under consideration comprise both discrete timevarying delays and distributed time-delays.By employing a new Lyapunov function and conducting stochastic analysis,a linear matrix inequality(LMI) approach was developed to derive the criteria ensuring stability.The proposed criteria can be checked by using Matlab LMI toolbox.A simple example was provided to demonstrate the good e...     

Fuzzy Modeling, Tracking Control and Synchronization of the Rossler''''s Chaotic System

IntroductionInrecentyears,therehasbeenincreasinginterestinthestudyofchaoticsysteminthefieldofnonlinearscience[12].Chaosisastochasticlikeprocessoccurringinacertainsystem.Ononehand,allthetheoryofautomaticcontrolisbasedonthemathematicalmodeloftheobjectundercontrol.Aswellknown,withrespecttoasimplesystem,thesystemmodelingapproachmainlyincludesmechanismmodelingandsystemidentification,andthesemethodsareeffectivewithahighprecisionandreliability.However,withrespecttocomplexsystem,itisnouseofthetraditi…     

系统参数完全未知的一个新超混沌系统自适应修正投影同步

基于Lyapunov稳定性原理,在驱动系统和响应系统参数完全未知的情况下,设计自适应控制器和参数更新准则,使得两个不同或相同混沌系统同步,并能辨识出系统参数,同时可以通过调节控制增益和自适应增益来调整同步速度和参数辨识速度.作为该方法的应用,对超混沌Chen系统和一个新的超混沌系统实现了修正投影同步.数值仿真证明了所提方法的正确性.     

An Improving Indexing Approach on Time Series Based on Minimum Bounding Rectangle

A fundamental problem in whole sequence matching and subsequence matching is the problem of representation of time series. In the last decade many high level representations of time series have been proposed for data mining which involve a trade-off between accuracy and compactness. In this paper the author proposes a novel time series representation called Grid Minimum Bounding Rectangle (GMBR) and based on Minimum Bounding Rectangle. In this paper, the binary idea is applied into the Minimum Bounding Rectangle. The experiments have been performed on synthetic, as well as real data sequences to evaluate the proposed method. The experiment demonstrates that 69%- 92% of irrelevant sequences are pruned using the proposed method.     

声表面波式小波变换器件的研究

提出了用小机电耦合系数K²的基片(如X-112Y LiTaO₃)制作声表面波式小波变换器件, 从而减小了指条的反射, 即减小了该器件的误差, 并且得到了小波式发射叉指换能器的中心频率越小, 其误差越小的结论. 最后, 提出了使用机电耦合系数比X-112Y LiTaO₃的机电耦合系数还要小的基片来制造中心频率在100 MHz以上的小波式发射叉指换能器和接收叉指能器, 这样可以减小中心频率100 MHz以上的小波式发射叉指换能器和接收叉指能器的误差.     

采用神经网络和遗传算法组合的自学习模糊控制器

本文提出一种新型的、采用神经网络和遗传算法组合自学习构造模糊控制器的方法。该方法将神经网络的实时增强学习能力融合于遗传算法的全局搜索中,提高了系统的收敛速度、实时学习能力和控制性能,而不需要提供系统动力学知识和先验控制经验。作者以倒立摆系统和家用空调器作为控制对象,通过仿真计算检验了该方法的有效性。     

XML技术在网络服装定制系统中的应用

为了提高我国服装制造业的生产效率，需要将传统服装定制过程中的人体测量，体型分析以及服装定制这几个环节结合起来。分析了XML语言的基本特点，通过一个实例展示了XML技术在网络服装定制系统中的应用，具体阐述了XML技术在数据表现、数据交换和数据存储这三个方面的应用。实践表明，利用XML技术能够在网上实现方便快捷的服装定制服务。     

混沌系统耦合同步控制方法

总结了混沌同步在保密通信中的应用方法，提出了一种简单的耦合同步方法，并给出同步及信息传输的仿真，仿真结果证明该方法可以用于保密通信。     

随机干扰下降阶时延混沌系统的自适应广义投影同步

研究随机干扰下降阶时延混沌系统的广义投影同步(RLGPSS).结合自适应控制方法和反馈控制技术,设计控制器和参数自适应更新律,实现混沌系统的RLGPSS问题,同时,对于系统未知参数能够有效的辨识.数值仿真结果证实了所提出控制策略的有效性.