In order to deal with the chattering of rudder angle and the problem of non-convex attainable thrust regions,introduce the concept of dynamic attainable region for each thruster and rudder to limit the thruster rotati...In order to deal with the chattering of rudder angle and the problem of non-convex attainable thrust regions,introduce the concept of dynamic attainable region for each thruster and rudder to limit the thruster rotational speed and the rudder angle,and decompose the thrust allocation optimization problem into several optimization sub-problems.The optimization sub-problems were solved by particle swarm optimization(PSO) algorithm.Simulation studies with comparisons on a model ship were carried out to illustrate the effectiveness of the proposed thrust allocation optimization method.展开更多
针对单波束多功能机载相控阵雷达的资源分配问题,提出一种自适应搜索加跟踪(track and search,TAS)调度算法。该算法以调度间隔为周期,基于先前调度任务的处理结果实时生成当前的任务请求集合,以跟踪类型任务竞争时间资源,搜索任务一直...针对单波束多功能机载相控阵雷达的资源分配问题,提出一种自适应搜索加跟踪(track and search,TAS)调度算法。该算法以调度间隔为周期,基于先前调度任务的处理结果实时生成当前的任务请求集合,以跟踪类型任务竞争时间资源,搜索任务一直等待空闲时间片为准则,实现搜索和跟踪的协同调度。此外利用波束位置、任务类型和预测速度信息,实时分配各执行任务的工作波形。仿真结果表明,该算法能够合理调度各类跟踪请求事件和搜索事件,同时具有自适应调整执行事件的跟踪时间间隔和探测波形的能力。展开更多
This article presents a method named pseudo-inverse to solve the optimal thrust allocation of dynamic positioning (DP) system,proposes to optimally determine the azimuth angle of thrusters instead of man-control or se...This article presents a method named pseudo-inverse to solve the optimal thrust allocation of dynamic positioning (DP) system,proposes to optimally determine the azimuth angle of thrusters instead of man-control or semi-auto control,and combines with the pseudo-inverse methods to get the optimal solutions for dynamic positioning control system.It is able to greatly reduce the risk of manual mode.Three different kinds of modes are proposed and detailedly illuminated,and can be used to solve much more complex nonlinear constraint problems,such as typical forbidden vector boundary.Several illustrative examples are provided to demonstrate the effectiveness and correctness of the proposed thrust allocation modes.展开更多
基金National Natural Science Foundations of China(Nos.51579026,51079013)Program for Excellent Talents in Universities of Liaoning,China(No.LR2015007)+1 种基金Project of Resource and Social Security of Ministry of Human Province,ChinaFundamental Research Funds for the Central Universities,China(No.3132016020)
文摘In order to deal with the chattering of rudder angle and the problem of non-convex attainable thrust regions,introduce the concept of dynamic attainable region for each thruster and rudder to limit the thruster rotational speed and the rudder angle,and decompose the thrust allocation optimization problem into several optimization sub-problems.The optimization sub-problems were solved by particle swarm optimization(PSO) algorithm.Simulation studies with comparisons on a model ship were carried out to illustrate the effectiveness of the proposed thrust allocation optimization method.
文摘针对单波束多功能机载相控阵雷达的资源分配问题,提出一种自适应搜索加跟踪(track and search,TAS)调度算法。该算法以调度间隔为周期,基于先前调度任务的处理结果实时生成当前的任务请求集合,以跟踪类型任务竞争时间资源,搜索任务一直等待空闲时间片为准则,实现搜索和跟踪的协同调度。此外利用波束位置、任务类型和预测速度信息,实时分配各执行任务的工作波形。仿真结果表明,该算法能够合理调度各类跟踪请求事件和搜索事件,同时具有自适应调整执行事件的跟踪时间间隔和探测波形的能力。
基金the National High Technology Research and Development Program (863) of China(No. 2008AA09Z315)
文摘This article presents a method named pseudo-inverse to solve the optimal thrust allocation of dynamic positioning (DP) system,proposes to optimally determine the azimuth angle of thrusters instead of man-control or semi-auto control,and combines with the pseudo-inverse methods to get the optimal solutions for dynamic positioning control system.It is able to greatly reduce the risk of manual mode.Three different kinds of modes are proposed and detailedly illuminated,and can be used to solve much more complex nonlinear constraint problems,such as typical forbidden vector boundary.Several illustrative examples are provided to demonstrate the effectiveness and correctness of the proposed thrust allocation modes.
