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针对同步电动机励磁系统的非线性等特点,提出智能励磁调节器。文章对模糊控制和神经网络控制以及两者的结合进行了分析研究,提出神经网络模糊控制器,并进行了带参数自调整的神经网络模糊控制器的设计。最后对理论进行了对比仿真验证,证明了其优越性。 相似文献
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SUN Yan-fei~ ZHANG Shun-yi~ SHI Jin~ WANG Jiang-tao~.Jiangsu Province Engineering Research Center of Telecommunication & Network Technology Nanjing University of Posts Telecommunications Nanjing P.R.China .State Key Laboratory of Novel Software Technology Nanjing University Nanjing P.R.China .Department of Computer Science Technology Nanjing University of Posts Telecommunications Nanjing P.R.China 《中国邮电高校学报(英文版)》2005,12(4)
1IntroductionAs for multi media transmitted through Internet ,some congestion control methods can adjust sending rateto reduce the packet loss ratio accordingto networkcon-gestion status , and strive to keep the smoothness ofsending rate so as to avoid video jitter[1 ~3]. Congestioncontrol mechanism based on sending rate can achieve“TCP-friendly”by networkfeedbackindication and dy-namic sending rate adjusting[4].Si mple AI MDi mitates action of TCPcongestion con-trol , which leads to sho… 相似文献
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Chien Tseng-Hsu; Tsai Jason Sheng Hong; Guo Shu-Mei; Chen Guanrong 《IMA Journal of Mathematical Control and Information》2007,24(2):219-234
** Email: shtsai{at}mail.ncku.edu.tw In this paper, subject to acceptable closed-loop performance,an effective lower-order tuner for a stochastic chaotic hybridsystem is designed using the observer/Kalman filter identification(OKID) method, in which the system state in a general coordinateform is transformed to one in an observer form. The OKID methodis a time-domain technique that identifies a discrete inputoutputmap by using known inputoutput sampled data in the generalcoordinate form, through an extension of the eigensystem realizationalgorithm. Moreover, it provides a lower-order realization ofthe tracker, with computationally effective initialization,for on-line "auto-regressive moving average process with exogenousmodel" -based identification and a lower-order state-space self-tuningcontrol technique. Finally, the chaotic Chen's system is usedas an illustrative example to demonstrate the effectivenessof the proposed methodology. 相似文献
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热风炉是高炉生产系统中重要的组成部分,其燃烧控制是一个相当重要的部分。但是国内大部分的中小型热风炉参数的设置几乎都采用常规PID,这样受人为因素影响严重,不能达到节约能源和优化控制的目的。因此,运用合适的PID参数自整定方法来代替常规PID整定,对煤气和空气流量进行控制,进而改善热风炉的送风效果显得尤为重要。本文设计了热风炉的燃烧控制方案,然后具体对几种不同的PID自整定方法进行研究,并以工业控制系统中常用的带有时间延迟的一阶模型为例,运用MATLAB对具体的PID自整定方法进行研究与仿真。同时,对仿真结果进行比较,得到了各种自整定方法的控制效果和适用范围。以便将PID自整定方法运用到热风炉的燃烧控制中,进而改善其燃烧效果。 相似文献
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在工业温度控制过程中,被控对象往往具有纯滞后.模型不确定等特征.传统的控制方法参数整定不方便,难以实现有效的控制。本文采用80C196KB单片机系统设计了一类包含有自调整模糊控制的多模态智能控制算法.系统温度控制实验表明设计的可行性. 相似文献
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