To gain superior computational efficiency, it might be necessary to change the underlying philosophy of the simplex method. In this paper, we propose a Phase-1 method along this line. We relax not only the conventiona...To gain superior computational efficiency, it might be necessary to change the underlying philosophy of the simplex method. In this paper, we propose a Phase-1 method along this line. We relax not only the conventional condition that some function value increases monotonically, but also the condition that all feasible variables remain feasible after basis change in Phase-1. That is, taking a purely combinatorial approach to achieving feasibility. This enables us to get rid of ratio test in pivoting, reducing computational cost per iteration to a large extent. Numerical results on a group of problems are encouraging.展开更多
并联型有源电力滤波器(shunt active power filter,SAPF)多配置于非线性负载的并网点并对本地负载进行谐波电流补偿。随着配电网中非线性负载的广泛接入,导致基于本地补偿的配置方式不再具有经济、高效的优点,为了解决此问题,出现了以...并联型有源电力滤波器(shunt active power filter,SAPF)多配置于非线性负载的并网点并对本地负载进行谐波电流补偿。随着配电网中非线性负载的广泛接入,导致基于本地补偿的配置方式不再具有经济、高效的优点,为了解决此问题,出现了以配电网整体多节点的电能质量为优化目标的综合补偿配置方案。基于此,本文提出了一种综合考虑配电网各节点电压谐波含量、SAPF总安装台数及安装容量的SAPF配置算法,结合多目标粒子群及单目标迭代算法确定在网络各节点谐波电压畸变率满足标准时SAPF的数量、配置节点及最优输出电流。最后,通过仿真搭建IEEE18节点标准模型,验证了所提出的算法在多台SAPF配置问题中的有效性。展开更多
In this paper,a method combining perspective-n-point(PnP) and novel iteration algorithm is developed to measure the pose of a target in high precision for Tele-LightSaber game.The PnP algorithm is used to obtain a rou...In this paper,a method combining perspective-n-point(PnP) and novel iteration algorithm is developed to measure the pose of a target in high precision for Tele-LightSaber game.The PnP algorithm is used to obtain a rough pose,which is taken as the initial value of the iteration algorithm.The iteration algorithm utilizes the unit quaternions to represent the rotations.Then the result is optimized with Kalman filter.Considering the real-time and accuracy of the pose measurement,a fast feature extraction algorithm including object location,edge detection and corner detection is adopted to get the corners in high precision.The experiments and results verify the effectiveness of the proposed method.展开更多
文摘To gain superior computational efficiency, it might be necessary to change the underlying philosophy of the simplex method. In this paper, we propose a Phase-1 method along this line. We relax not only the conventional condition that some function value increases monotonically, but also the condition that all feasible variables remain feasible after basis change in Phase-1. That is, taking a purely combinatorial approach to achieving feasibility. This enables us to get rid of ratio test in pivoting, reducing computational cost per iteration to a large extent. Numerical results on a group of problems are encouraging.
文摘并联型有源电力滤波器(shunt active power filter,SAPF)多配置于非线性负载的并网点并对本地负载进行谐波电流补偿。随着配电网中非线性负载的广泛接入,导致基于本地补偿的配置方式不再具有经济、高效的优点,为了解决此问题,出现了以配电网整体多节点的电能质量为优化目标的综合补偿配置方案。基于此,本文提出了一种综合考虑配电网各节点电压谐波含量、SAPF总安装台数及安装容量的SAPF配置算法,结合多目标粒子群及单目标迭代算法确定在网络各节点谐波电压畸变率满足标准时SAPF的数量、配置节点及最优输出电流。最后,通过仿真搭建IEEE18节点标准模型,验证了所提出的算法在多台SAPF配置问题中的有效性。
基金Supported by the National High Technology Research and Development Programme of China(No.2012AA041403)the National Natural Science Foundation of China(No.60905061)the National Natural Science Foundation of Tianjin(No.08JCYBJC12700)
文摘In this paper,a method combining perspective-n-point(PnP) and novel iteration algorithm is developed to measure the pose of a target in high precision for Tele-LightSaber game.The PnP algorithm is used to obtain a rough pose,which is taken as the initial value of the iteration algorithm.The iteration algorithm utilizes the unit quaternions to represent the rotations.Then the result is optimized with Kalman filter.Considering the real-time and accuracy of the pose measurement,a fast feature extraction algorithm including object location,edge detection and corner detection is adopted to get the corners in high precision.The experiments and results verify the effectiveness of the proposed method.
