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PLL
一个基于二阶广义积分器的锁相环仿真模型，可以测得三相正弦信号的相位和频率(Phase-locked loop simulation model based on Nikai Hiroyoshi integrator)
- 2021-04-15 15:18:54下载
- 积分：1
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单个圆形活塞换能器指向性
使用matlab进行超声波阵列指向性仿真(Simulation of directivity of ultrasonic array using MATLAB)
- 2021-04-04 15:09:04下载
- 积分：1
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three_level
该模型用于电力电子三电平逆变器的仿真，结构完整，功能齐全，既可以与电机等其他设备配合使用，也可以单独使用。(simulink model for 3-phase inverter)
- 2017-08-08 10:09:57下载
- 积分：1
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NAR
提供非线性自回归神经网络（NAR）的训练及前向预测代码(Training and Forward-Predictive Code of nar Neural Network)
- 2021-04-20 16:58:51下载
- 积分：1
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求解一维LAVAL管亚音速流动
说明： 用MACCORMACK方法求解一维LAVAL管亚音速流动(solve one dimensional laval tube with the method in maccormack)
- 2020-05-28 10:47:49下载
- 积分：1
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2d-3_no_unfracture_zone
通过PYTHON修改inp文件进行全局插入零厚度cohsive单元(Modify the InP file through PYTHON to insert zero thickness cohsive unit globally.)
- 2018-11-04 19:38:12下载
- 积分：1
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三维凸包
matlab画三维凸包，根据一些离散点，效果非常好(Matlab draws three-dimensional convex hull, according to some discrete points, the effect is very good.)
- 2021-02-26 14:09:37下载
- 积分：1
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log-FDA transmit beamforming
阵元间频率增量按对数增加，发射波束不再按距离周期性出现，发射波束图最大值只有一个。相较于阵元间频率增量固定的传统频率分集阵列，log-FDA能够抗距离相关的干扰，而且发射能量不泄露，具有一定的低截获性能。(FDA with logarithmically increasing frequency offset to achieve a beampattern with a single maximum at the target location. FDA radar with uniform interelement frequency offset, its beampattern exhibits maxima at multiple range values. doe tu the multiple maxima, a number of reflectors located at any of the maxima can interfere the target-return, thus deteriorating SINR.)
- 2018-07-02 15:42:46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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cohesive inp和for子程序
ABAQUS 有限元子程序，粘弹性本构，蠕变应力松弛测试拟合结果
cohesive 粘接单元，用于分层分析的子程序，帮助初学者快速掌握ABAQUS的内聚体单元应用(ABAQUS umat creep stress relaxation fitting result
Cohesive bonding unit, used for hierarchical analysis of the subroutine, to help beginners quickly grasp the ABAQUS cohesive unit application)
- 2018-05-02 14:21:50下载
- 积分：1
