nlfm_code

优秀论文及配套源码。电压暂降是动态电能质量问题中最受关注的热点之一。大量新型电力电子设备的广泛使用对电网电能质量的要求越来越高，而且电压暂降在电网中又具有一定的传播性。因此，无论从电网还是用户都迫切需要对电压暂降进行研究和治理。对电压暂降的检测是解决电压暂降的前提条件，故本论文主要对电压暂降的检测方法进行研究。 本文分析了国内外短时电能质量扰动检测的研究现状，并着重讨论了短路故障、感应电动机启动和变压器激磁三种电压暂降扰动情况下电压暂降的特性；在此基础上选择了基于S变换的短时电能质量扰动检测方法，从S变换的结果S模矩阵及S复矩阵中提取出所需数据并以此来对各种扰动情况下的电压暂降的幅值、相位跳变、持续时间和谐波含量进行分析。仿真结果表明，该方法很好地实现了对电压暂降各特征量的检测。 (The voltage sag is one of most hot topics in dynamic electric energy problems. Masses of new power and electron facilities have been put into use widely, requiring a high quality of electric network and power, chiefly the voltage sag. Moreover, the voltage sag can spread in the electric network. So people have every reason to research and control the voltage sag. However, before developing the voltage sag, people have to detect it. On account of the above, this essay will chiefly focus on the detect methods of the voltage sags. In this paper, the status of the short duration power quality disturbance based on the different method are researched firstly, and emphasizes the characteristic of the voltage sag under the situation of the three kinds of voltage sag disturbances like the short circuit fault, induction motor start-up and transformer excitation. On the basis of the above, the short duration power quality disturbance detection method based on S transform is chosen. The complex m)

粒子群算法在排列组合问题中的应用，源程序，matlab下编写(Particle swarm optimization problems in permutation and combination of applications, source code, matlab, prepared)

该代码实现了am，f-msk，qpsk，mdpsk(the code achieved am, f-msk, qpsk, mdpsk)

基于matlab的模糊控制程序的源代码，可以实现阶跃响应曲线、超调量、上升时间等控制指标。(Fuzzy control codes based on matlab)

CODE UESED FOR CHANG IMAGE FORMAT

利用matlab来实现工程光学里面一些实例，让学生们更容易了解这门学科的更实质性的问题！(Using matlab to achieve engineering optics inside some examples, so that students are more likely to understand this discipline more substantive issues!)

this code helps to find roota of equation by gauss jordan method

典型模拟通信系统仿真 增量调制 PST编码 FSK 汉明码(communication system modulation)

预测函数控制算法在单容液位定值控制中的应用.在DCS实验系统上实现算法(Predictive Functional Control Algorithm algorithm DCS experimental system in a single volume level setting control.)

niching GA~~~~~~~~~~~~~~~~~~