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ARIMA预测
说明: ARIMA整合移动平均自回归模型,时间序列预测分析方法之一,可用于股价预测。(ARIMA integrates moving average autoregressive model and time series forecasting analysis method, which can be used for stock price forecasting.)
- 2020-10-20 09:17:25下载
- 积分:1
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DE优化函数程序
大坝变形的精确预测对其安全评价方面发挥着重要作用。为了进一步提高大坝变形预测精度,提出了一种改进的灰狼算法优化支持向量机的预测模型。通过引入非线性收敛因子和采用动态加权策略,提升灰狼算法优化支持向量机惩罚因子和核函数参数的能力,并以优化的参数来建立支持向量机大坝变形预测模型。选取实例数据,在与布谷鸟算法、差分进化算法、粒子群算法、基本灰狼算法优化的支持向量机预测比较中,实验结果表明,改进的灰狼算法对支持向量机参数的优化是有效的,可以提高大坝变形预测精度。(Accurate prediction of dam deformation plays an important role in its safety evaluation. In order to further improve the prediction accuracy of dam deformation, an improved grey Wolf algorithm is proposed to optimize the prediction model of support vector machine. By introducing the nonlinear convergence factor and using the dynamic weighting strategy, the gray wolf algorithm is improved to optimize the capacity of the support vector machine penalty factor and the kernel parameter, and the support vector machine dam deformation prediction model is established with the optimized parameters. The experimental results show that the Improved Grey Wolf algorithm is effective for the optimization of support vector machine parameters, and it can improve the accuracy of the deformation prediction of the dam.)
- 2018-06-28 09:53:07下载
- 积分:1
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OFDM-master
说明: MATLAB OFDM仿真代码,采用QPSK调制(MATLAB OFDM simulation code, using QPSK modulation)
- 2020-07-03 00:00:01下载
- 积分:1
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ukf_for_track_6_div_system
说明: 对于非线性模型的跟踪预估问题,摒弃额对非线性函数进行线性化的做法,采用无迹变换处理均值和方差的非线性传递问题。(For the tracking and prediction problem of the nonlinear model, the linearization of the non-linear function is abandoned, and the traceless transformation is used to deal with the non-linear transfer of mean and variance.)
- 2019-04-16 16:37:10下载
- 积分:1
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matlab 通过设置不同的参数来创建一个随机图
说明: 这个程序是通过设置不同的参数来创建一个随机图,可以运行。(This program is to create a random graph for simulation.)
- 2020-06-19 01:40:01下载
- 积分:1
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三相三电平逆变器的两个相同电路进行建模power_3level
说明: 该模型是对50kW、380V、50Hz三相三电平逆变器的两个相同电路进行建模。IGBT逆变器采用SPWM技术,(8kHz载频)将直流电源从a +/-200Vdc源转换为220V AC, 50Hz。逆变器通过75kVA 220/380V变压器输入50kW电阻负载。变频器输出采用L-C滤波器滤除主要产生于8kHz开关频率倍数(Fh=n*8000 +/-k*50Hz)附近的谐波频率Fh。逆变器所需的12个逆变脉冲由PWM发生器块产生。该系统以恒定的调制指标在开环中工作。
电路1使用三电平桥块对逆变器进行建模。电路2使用独立的IGBTs和二极管块。用开/关延时块模拟死区,仅在电路1上应用。(It is easy for us)
- 2020-07-14 09:08:52下载
- 积分:1
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MICROGRID_PV_Wind
Intelligent Microgrid
- 2017-07-09 04:00:49下载
- 积分:1
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shuangbihuan
说明: 直流电机双闭环系统,实现转速和电流的反馈,根据给定的不同,电动机转速也会不同(DC motor double closed loop system)
- 2020-06-25 21:12:17下载
- 积分:1
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NG3125R
用abaqus做的金属切削仿真,希望可以帮助大家(A metal cutting simulation, i hope it will be helpful)
- 2017-07-07 15:30:59下载
- 积分:1
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F16-flight-controller-master
说明: 基于matlab搭载的F16动力学分析程序(F16 dynamic analysis program based on MATLAB)
- 2020-07-03 14:20:01下载
- 积分:1