hj_search

PFUKFEKF三种滤波算法的对比比较，有图(The PF UKF is the EKF comparison of the three filtering algorithm, Fig.)

STBC仿真程序 基于MIMO-OFDM系统下的编程(STBC MIMO-OFDM-based simulation program systems programming)

PWM整流器，SVPWM直接电流控制，适用于matlab7.3版本(PWM rectifier, SVPWM direct current control, apply version matlab7.3)

霍夫变换的源程序，专门用于复杂背景下圆孔的中心定位(Hough transform of the source, specifically for the complex context of the central positioning hole)

Xu ly anh - dai hoc bach khoa ha noi

说明：  标准图像，包含多幅用于matlab的标准图像(The standard image, contains many standard for matlab image)

说明：  计算时滞微分方程的李雅普诺夫指数，动力学维数(Delay differential equations Lyapunov index calculation, dynamic dimension)

本论文首先阐述了利用Duffing振子进行微弱信号检测的基本方法及具体实现方法，论证了根据系统相轨迹的变化来判断目标信号中是否含有周期信号的混沌振子检测方法。将Lyapunov特性指数作为一种定量的混沌判别方法应用到微弱信号混沌检测领域，分别研究了连续系统和时间序列的Lyapunov指数计算方法。(his paper first discusses how to use the Duffing oscillator are the weak signal detection, the basic method and the realization methods, proved according to the change of the phase track system to judge whether a cycle of target signal of chaotic oscillator signal detection methods. Will Lyapunov characteristics as a quantitative index of chaotic identifying method applied to a weak signal detection field chaos, respectively, the continuous system and research of time sequence Lyapunov index calculation method. )

this is multilayer perceptron neural network

说明：  如果对实际工程结构作简化处理，建立其动力学模型，并确定系统的质量、刚度、阻尼参数，便可以用多种方法建立系统的动力微分方程。常用的方法有直接 法、影响系数法、拉格朗日法以及有限元法等。拉格朗日法是从能量的观点建立系统的动能T、势能U和功W之间的标量关系，是研究静、动力学问题的一种方法。如果在选定运动坐标以后，能够设法求得坐标相对应的质量矩阵和刚度矩阵，就可以用影响系数法建立多自由度系统运动微分方程[4]。本文采用拉格朗日法建立了1/4车辆几何模型。(If the actual engineering structure is simplified, its dynamic model is established, and the mass, stiffness and damping parameters of the system are determined, the dynamic differential equation of the system can be established by various methods. The commonly used methods are direct method, influence coefficient method, Lagrange method and finite element method. Lagrange method is a method to study the static and dynamic problems, which is to establish the scalar relation among kinetic energy t, potential energy u and work W from the point of view of energy. If the mass matrix and stiffness matrix corresponding to the coordinates can be obtained after the motion coordinates are selected, the differential equation of motion of the multi degree of freedom system can be established by the influence coefficient method [4]. In this paper, 1 / 4 vehicle geometry model is established by Lagrange method.)