An adaptive background reconstruction algorithm based on inertial filtering

To improve the detecting effects of moving objects, an adaptive background reconstruction algorithm based on inertial filtering is proposed in this paper. According to different properties of the moving foreground and ever-changing background, the current frame is added to the background with a specific weight value. So the background can not only keep steady, but also be reconstructed at a specific speed. Experimental results show that the algorithm can reconstruct the background quickly and effectively whenever the background changes slowly or suddenly, or the background is mixed with moving foreground, and it can improve the veracity and robustness of objects detection effectively.     

矩阵变换器驱动异步电机模糊自适应PI控制

在间接空间矢量调制的矩阵变换器和矢量控制原理的基础上,搭建了异步电机调速系统.为了进一步提高该系统的动态性能和抗干扰能力,在调速系统的矢量控制部分引入模糊自适应PI控制器,代替传统的PI控制器,对控制器参数进行实时校正.仿真结果表明,采用模糊PI控制器的矩阵变换器驱动的调速系统能够使能量回馈到电网,达到了节能目的,同时...     

基于双空间矢量矩阵变换器的永磁同步电机的闭环控制

介绍了矩阵式变换器的双空间矢量调制的工作特点,对永磁同步电机的数学模型进行阐述。在此基础上对基于矩阵变换器的永磁同步电机的双闭环控制进行了研究,建立了控制系统的MATLAB仿真模型,给出了主要仿真结果波形,仿真结果说明使用矩阵变换器对永磁同步电机进行双空间矢量闭环控制,可以很好的解决输入功率因数问题,并且可以很好的实现定子电枢电流的跟踪,系统性能良好。