leidafangzhen

用matlab编写得计算器，很好用得，不妨(Matlab prepared using a calculator, a very good use might be)

ac motor speed control simulation and text mmmmm nnnn nbbbb hhhh ddddd sssw wwww w ww w w w w w w w www

最小二乘法是一种数学优化技术。它通过最小化误差的平方和寻找数据的最佳函数匹配。利用最小二乘法可以简便地求得未知的数据，并使得这些求得的数据与实际数据之间误差的平方和为最小。最小二乘法还可用于曲线拟合。其他一些优化问题也可通过最小化能量或最大化熵用最小二乘法来表达。(Least squares method is a mathematical optimization techniques. It matches by squaring and finding data to minimize the error of the best functions. Least square method can easily be obtained unknown data, and so these squared error between the obtained data and the actual data and the minimum. The least squares method can be used for curve fitting. Some other optimization problems can be expressed by the least squares method by minimizing or maximizing entropy energy.)

单小区单用户多天线MIMO环境下，QPSK调制进行ZF接收处理，比对理想，非理想和一般MMSE接收的性能(Under the single-cell single-user multi-antenna MIMO environment, QPSK modulation ZF receiving treatment, compared to the ideal, non-ideal performance and general ZF reception)

水面无人艇(Unmanned Surface Vehicle)的航迹控制对提升无人艇艇载设备 侦察观测效果以及多任务作战能力具有十分ffi要的意义。由于受到风、浪、流等 干扰环境影响,水而无人艇将产生六自由度的操纵运动,具有很强的非线性和随 机性。这将致使无人艇的航向航迹及姿态控制具有一定的难度,因此需要对水面 无人艇建立六自由度操纵模型,更好地实现对无人艇的控制。 采用经典的MMG分离建模思想,依托浜本刚实提出的水平附体坐标系,建 立水面无人艇的六自由度操纵运动方程。分析无人艇艇体、桨、舵所受的流动动 力和力矩,分别建立流体惯性力模型、流体粘性力模型、螺旋桨推力模型及舵机 模型。 考虑海况和气象环境的影响,分析风、浪作用于无人艇上的T扰力。将随机 风简化为定常风,建、风的干扰力数孕模型 采用傅汝德-克茁洛火(Froude - Krylov) 假设,研究规则波中无人艇受到的T扰力,述立波浪的r扰力数学投型。 在数学模型的站础上述立?于MATLAB/Simulink的仿i t校型,并进行典型的 冋转试验,分别分析不同海况下的无人艇的问转情况。无人艇丨 丨主航行时,在不 同海况下,绘制出其航速及船摇炻的变化曲线。通过总结分析,推论出多种海况 (The course and track control of unmanned surface vehicle (USV) is important to improve the observational effect of the recon reconnaissance equipment and the multi- -mission operational capability. Because of the effects of wind, wave and flow, the unmanned surface vehicle will produce six degrees of freedom movement which has randomicity and nonlinearity. It is difficult of the course, track and attitude control of unmanned surface vehicle, so six degrees of freedom movement model is built for the better control of unmanned surface vehicle. According to the classic MMG s separated modeling theory and the horizontal body axes system which was developed by Hamamoto, this thesis describes a six degrees of freedom motion equation of unmanned surface vehicle. Through analyzing the hydrodynamic force and moment, the fluid inertia force model, the fluid viscous force model, propeller thrust model and steering gear model are built respectively. Considering )

this the matlab program for the NRLF power system the dybnamic nature is been provided .... in the program and easy to understand

用matlab做的有关边缘检测的一个代码，该代码可以进行多种的边缘检测(Using matlab to do the edge detection of a code that can be a variety of edge detection of)

说明：  升余弦脉冲的设计实例，升余弦脉冲是一种具有零ISI的脉冲波形，此程序用来产生升余弦脉冲。(Raised cosine pulse design example, raised cosine pulse is a pulse waveform with zero ISI, the program used to generate raised cosine pulses.)

在现代测试技术中，考虑到传感器特性，针对传感器特性曲线非线性问题的补偿(In modern testing technology, taking into account characteristics of the sensor, the sensor characteristic curve for the compensation of nonlinear problems)

PID比例控制，用对水箱的液位的控制，通过调节阀的流量改变，来控制液位稳定(pid)