In the previous research,when the economic factor forecasting solution of Urbanization was used into practice,the users almost always ignored the effects of the lagged economic development factors.The accuracy of the ...In the previous research,when the economic factor forecasting solution of Urbanization was used into practice,the users almost always ignored the effects of the lagged economic development factors.The accuracy of the forecasting should be decreased seriously by this way.In this paper,taking Gansu province as an example,the authors try to improve the forecasting accuracy on the basis of the unrestricted PDL(Polynomial Distributed Lag)Models.In the context,the ARIMA Models and CPPS software are also applied to finish the forecasting more accurately.展开更多
文章讨论基于 SIMUL INK可视化动态仿真平台的交流传动系统仿真方法。首先介绍了 MA TL AB5 .2版本新增加的 POWERSYS工具箱 ,以之仿真了一个异步电机的矢量控制闭环系统 ,并分析了其优缺点。进而介绍了直接用 SIMU L INK进行高性能控...文章讨论基于 SIMUL INK可视化动态仿真平台的交流传动系统仿真方法。首先介绍了 MA TL AB5 .2版本新增加的 POWERSYS工具箱 ,以之仿真了一个异步电机的矢量控制闭环系统 ,并分析了其优缺点。进而介绍了直接用 SIMU L INK进行高性能控制算法仿真的方法。最后总结了用 SIMU LINK仿真交流传动系统的一般方法。展开更多
文摘In the previous research,when the economic factor forecasting solution of Urbanization was used into practice,the users almost always ignored the effects of the lagged economic development factors.The accuracy of the forecasting should be decreased seriously by this way.In this paper,taking Gansu province as an example,the authors try to improve the forecasting accuracy on the basis of the unrestricted PDL(Polynomial Distributed Lag)Models.In the context,the ARIMA Models and CPPS software are also applied to finish the forecasting more accurately.
文摘文章讨论基于 SIMUL INK可视化动态仿真平台的交流传动系统仿真方法。首先介绍了 MA TL AB5 .2版本新增加的 POWERSYS工具箱 ,以之仿真了一个异步电机的矢量控制闭环系统 ,并分析了其优缺点。进而介绍了直接用 SIMU L INK进行高性能控制算法仿真的方法。最后总结了用 SIMU LINK仿真交流传动系统的一般方法。
