基于模拟退火的近浅海系泊系统仿真
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摘要
根据近浅海观测网的运输节点系泊系统的海洋环境特征,采用拟牛顿迭代算法求解不同风速和水深的钢桶、钢管倾角、重物球质量、浮标吃水深度及游动区域。考虑到求解的收敛性,采用模拟退火确定一个优质解作为初值,提出增加一个随模拟退火温度线性减小的控制更新幅度的参数,在大范围搜索时以一定概率接收搜寻到的解;随后在已找到的优质解附近小范围搜索。不同条件下的仿真锚链形状显示,其变化趋势符合风速和受力等条件的影响趋势,改进的模拟退火方法具有实用性。
According to the marine environment features of the mooring system which is the transport node of the neritic observation network,the quasi-Newton iteration algorithm is used to calculate the inclination of barrel and tube,mass of weight ball,draft and nomadic range of buoy under different wind speeds and water depths. In view of the convergence of calculation,the simulated annealing is adopted to determine an elegant solution as an initial value. Addition of the parameter which linearly decreases with simulated annealing temperature and controls updating amplitude is proposed. The searched solutions are accepted with a certain probability during the large range search. Then the small range search is carried out around the found elegant solutions. The simulated mooring line chain shapes under different conditions shows that the change trend of line chain shapes complies with the influence trend of conditions like wind speed and force,and the improved simulation annealing method has practicality.
According to the marine environment features of the mooring system which is the transport node of the neritic observation network,the quasi-Newton iteration algorithm is used to calculate the inclination of barrel and tube,mass of weight ball,draft and nomadic range of buoy under different wind speeds and water depths. In view of the convergence of calculation,the simulated annealing is adopted to determine an elegant solution as an initial value. Addition of the parameter which linearly decreases with simulated annealing temperature and controls updating amplitude is proposed. The searched solutions are accepted with a certain probability during the large range search. Then the small range search is carried out around the found elegant solutions. The simulated mooring line chain shapes under different conditions shows that the change trend of line chain shapes complies with the influence trend of conditions like wind speed and force,and the improved simulation annealing method has practicality.
引文
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