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首先对行锁的基本原理做说明,并提出行锁的实际实现架构,分析基于二阶模型的PLL模型及关键参数。通过行锁基本要求的分析,从实现的角度提出相关关键参数,并最终采用MATLAB实现行锁功能,在MATLAB实现阶段考虑数字的量化误差,保证采用此模型实现数字电路的可靠性。 相似文献
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MOHAMED El mahdi Ali AHMED Darwich 《计算机辅助绘图.设计与制造(英文版)》2007,17(2):91-94
Control system design packages like MATLAB, MATRIXX, Control C, SIMNON, etc. have become essential ingredients of both undergraduate and graduate courses in the fields of systems and controls. The use of MATLAB and its companion toolboxes in teaching graduate and undergraduate courses was reported by many educators in the past. The experience with the use of SIMULINK and MATLAB in Intelligent Control Course is introduced which is offered to graduate students at Beijing University of Aeronautics and Astronautics (BUAA). The use of SIMULINK for simulation of intelligent control of their behavior is emphasized. The MATLAB features useful in this course are presented. How SIMULINK and MATLAB help in enhancing the students' understanding of the material and reducing the amount of time spent in performing computational homework assignments is discussed. 相似文献
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针对DC-DC变换器强非线性,提出了一种FSMC-GCMC控制方法,以增强对DC-DC变换器系统的控制效果。通过广义通用模型方法将强非线性系统转化为标准三阶线性系统并由此构成GCMC控制器。由于在DC-DC变换器参数改变情况下GCMC控制器将不能保持系统的线性特点,因此构造FSMC控制器,使用变结构控制增加系统的鲁棒性并利用模糊控制减少变结构控制的抖动并提高系统响应时间。通过仿真实验证明了该方法的可行性以及良好的动静态性能、较强的鲁棒性。 相似文献
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利用MATALB软件对注蒸汽燃气轮机工况间的过渡过程进行仿真计算。在建模过程中采用了模块化建模的思想,考虑了对燃气轮机系统影响较大的转动惯性、容积惯性及蒸汽发生系统的热惯性,模型具有较好的通用性。研究注蒸汽燃气轮机在加速(减速)过渡过程的供油规律,分析了3种不同供油规律对燃机系统的影响,得到了较适合的供油规律,能够为燃气轮机控制系统的设计和优化提供一定参考。 相似文献
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为了降低FIR滤波器对FPGA资源的消耗,同时能够直接验证其滤波性能,本文介绍了基于加法器网络的FIR滤波器的实现方法,以及系数的CSD码、最优CSD码表示方法,并引出了更加高效的简化加法器网络法.以一个32阶FIR低通滤波器的实现为例说明了设计的过程,巧妙结合MATALB与QuartusⅡ对所设计的滤波器进行了验证.实践表明,该方法节约资源,调试方便. 相似文献
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Despite the fact that relatively little is known about the ultimate resource potential of natural gas hydrates, it is certain that gas hydrates are a vast storehouse of natural gas and significant technical challenges need to be met before this enormous resource can be considered an economically producible reserve. In this theoretical study, a simulation scheme was suggested to produce NGH in an industrial scale using pure water as a carrier and seawater as a cooling source. Parametric study was carried out and rigorous design calculations for different operating parameters were investigated. Further more and economical evaluation was done taken data of locally produced LNG as a comparison. Production rates, storage and transportation from production region to consumer's ends were investigated. Results obtained suggested that NGH with little consideration can be a good alternative for fuel gas carrier. 相似文献
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针对目前水轮机调速器模型仿真中存在的问题,提出了以MATLAB软件及其提供的图形仿真工具IMULINK代替编程式仿真的方法。该方法具有能 数值计算、可视化建模和图形输出的特点,能满足水轮机调速器设计工作的要求,具有广泛的应用前景。 相似文献
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基于MATLAB的磁饱和式可控电抗器的仿真模型参数及过渡时间分析 总被引:2,自引:0,他引:2
建模仿真方法和过渡时间计算是磁饱和式可控电抗器研究中值得关注的2个重要问题。根据磁饱和式可控电抗器的饱和特性,通过对小斜率磁化特性的分析,找到了电抗器额定容量、额定电压、自耦比和绕组电阻之间的定量关系,明确了基于MATLAB的磁饱和式可控电抗器仿真模型参数的设置方法。通过对小斜率磁化特性的分段线性化,把从空载到满载的过渡过程分为直流磁链随时间线性增加和控制电流根据线性RL电路充电规律变化这2个过程,得到了比较准确的过渡时间计算公式。实例仿真结果说明所提分析方法简捷有效。 相似文献