my-code

这段代码利用分步傅里叶方法求解非线性薛定谔方程的matlab程序(This code solves the NLS equation with the split-step method)

关于微软出的几道思考题目，很有价值.值得一看。(About Microsoft thought out with a few topics of great value)

matlab环境下利用M文件实现的二进制频移键控调制ofdm(ofdm on matlab use m.file)

利用Matlab求二维离散系统的分岔图程序。 在非线性动力学及复杂经济学中经常用到类似的问题。也可以用来画其他更高维数的离散映射系统的分岔图。很实用。(using Matlab for discrete two-dimensional map of bifurcation process. In nonlinear dynamics and complex economics frequently used similar problems. Can also be used for other higher-dimensional painting of a few discrete mapping system bifurcation plan. Practical.)

模糊自适应PID控制和常规PID控制的仿真，对阶跃信号的仿真(Fuzzy adaptive PID control and conventional PID control simulation, the simulation of the step signal)

灰色模型（GM)。如果一个系统具有层次、结构关系的模糊性，动态变化的随机性，指标数据的不完备或不确定性，则称这些特性为灰色性。具有灰色性的系统称为灰色系统。在灰色系统理论中，利用较少的或不确切的表示灰色系统行为特征的原始数据序列作生成变换后建立的，用以描述灰色系统内部事物连续变化过程的模型，称为灰色模型，简称GM模型。(GM 1 to 1)

本文建立了独立悬架汽车整车七自由度动力学模型，推导了振动微分方程，运用数值仿真的手段研究了汽车悬架阻尼系数、刚度等设计参数对汽车振动特性的影响规律。结果表明，在共振区域附近，相对较大的刚度，会导致汽车的舒适性下降，但在共振区以外的高频区，刚度对汽车振动幅值的影响并不大；后桥悬挂阻尼对汽车振动幅值的影响较前桥强烈，适当增大后桥悬挂的阻尼有利于振动幅值的降低(This paper established an independent suspension vehicle dynamic model of seven degree of freedom, the vibration differential equation is derived, using the numerical simulation method of vehicle suspension damping coefficient, influence of design parameters on vehicle vibration characteristics of stiffness. The results show that in the resonance region, a relatively large stiffness, will lead to the comfort of the car down, but in the resonance region outside the high frequency region, the effect of stiffness of the vehicle vibration amplitude is small; the effect of damping on automobile suspension vibration amplitude is strongly increasing the rear axle axle, suspension damping to reduce the vibration amplitude)

cvx工具箱，适用于windows 64位，官网还可下载其他版本，具体参考文件夹doc中pdf(cvx toolkit for windows 64 bit official website can also download other versions, with specific reference to the folder in pdf doc)

《MATLAB统计分析与应用：40个案例分析》程序与数据(" MATLAB statistical analysis and applications: 40 Case Studies" program and data)

an svd syste is modelled in this file.