To achieve accurate classification and recognition of ship target types,it is necessary to establish a sample library of ship targets to be identified.On the basis of exploring the principles of building a ship target...To achieve accurate classification and recognition of ship target types,it is necessary to establish a sample library of ship targets to be identified.On the basis of exploring the principles of building a ship target image library,the paper determines the sample set.Using 3DS MAX software as the platform,combined with the accurate 3D model of the ship in an offline state,the software fully utilizes its own rendering and animation functions to achieve the automatic generation of multi-view and multi-scale views of ship targets.To reduce the storage capacity of the image database,a construction method of the ship target image database based on the AP algorithm is presented.The algorithm can obtain the optimal cluster number,reduce the data storage capacity of the image database,and save the calculation amount for the subsequent matching calculation.展开更多
Aiming at the nonlinear system identification problem, a parallel recursive affine projection (AP) adaptive algorithm for the nonlinear system based on Volterra series is presented in this paper. The algorithm identif...Aiming at the nonlinear system identification problem, a parallel recursive affine projection (AP) adaptive algorithm for the nonlinear system based on Volterra series is presented in this paper. The algorithm identifies in parallel the Volterra kernel of each order, recursively estimate the inverse of the autocorrelation matrix for the Volterra input of each order, and remarkably improve the convergence speed of the identification process compared with the NLMS and conventional AP adaptive algorithm based on Volterra series. Simulation results indicate that the proposed method in this paper is efficient.展开更多
离散型生产线具有多品种、变批量、混线生产的特征,导致多项制造资源存在逻辑共用的情况。制造资源的动态可重构技术使APS(Advanced Planning and Scheduling,高级计划排程)能够快速响应生产任务、现场扰动等变化量并及时对计划调度作...离散型生产线具有多品种、变批量、混线生产的特征,导致多项制造资源存在逻辑共用的情况。制造资源的动态可重构技术使APS(Advanced Planning and Scheduling,高级计划排程)能够快速响应生产任务、现场扰动等变化量并及时对计划调度作出调整,同时为工艺重构、资源布局优化提供数据支持,从而实现制造资源全局配置最优化。主要介绍了动态可重构生产线基本架构,对滚动排程、资源二次映射、资源同一性/延续性等APS动态可重构技术进行了详细分析,选择具有动态搜索半径的果蝇优化算法进行排程,验证了APS动态可重构技术在离散型生产线实际生产中的有效性。展开更多
文摘To achieve accurate classification and recognition of ship target types,it is necessary to establish a sample library of ship targets to be identified.On the basis of exploring the principles of building a ship target image library,the paper determines the sample set.Using 3DS MAX software as the platform,combined with the accurate 3D model of the ship in an offline state,the software fully utilizes its own rendering and animation functions to achieve the automatic generation of multi-view and multi-scale views of ship targets.To reduce the storage capacity of the image database,a construction method of the ship target image database based on the AP algorithm is presented.The algorithm can obtain the optimal cluster number,reduce the data storage capacity of the image database,and save the calculation amount for the subsequent matching calculation.
文摘Aiming at the nonlinear system identification problem, a parallel recursive affine projection (AP) adaptive algorithm for the nonlinear system based on Volterra series is presented in this paper. The algorithm identifies in parallel the Volterra kernel of each order, recursively estimate the inverse of the autocorrelation matrix for the Volterra input of each order, and remarkably improve the convergence speed of the identification process compared with the NLMS and conventional AP adaptive algorithm based on Volterra series. Simulation results indicate that the proposed method in this paper is efficient.
文摘离散型生产线具有多品种、变批量、混线生产的特征,导致多项制造资源存在逻辑共用的情况。制造资源的动态可重构技术使APS(Advanced Planning and Scheduling,高级计划排程)能够快速响应生产任务、现场扰动等变化量并及时对计划调度作出调整,同时为工艺重构、资源布局优化提供数据支持,从而实现制造资源全局配置最优化。主要介绍了动态可重构生产线基本架构,对滚动排程、资源二次映射、资源同一性/延续性等APS动态可重构技术进行了详细分析,选择具有动态搜索半径的果蝇优化算法进行排程,验证了APS动态可重构技术在离散型生产线实际生产中的有效性。
