动力固定分置式浮桥的数学建模与分析  

Mathematical modeling and analysis of a dynamically positioned floating bridge

作　　者：张国文[1] 张晓宇[1] 沈冬祥 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001 [2]总装工程兵科研一所,江苏无锡214035

出　　处：《哈尔滨工程大学学报》2010年第1期79-85,共7页Journal of Harbin Engineering University

摘　　要：动力固定是一种全新的浮桥固定方法,具有重要的实际应用价值.针对目前只研究浮桥的单个动力舟建模与固定问题,把整个浮桥系统作为研究对象,建立了分置式动力固定浮桥的动力学模型,对浮桥空载和负载时的运动进行了分析,按照动力固定控制系统要求对模型进行简化.以浮桥模型试验测得的水阻力等外界干扰力为依据,对浮桥运动特性进行数学仿真,仿真结果不但证明了建模方法的正确性,而且也说明,为了保证浮桥的横向稳定性,必须进行浮桥动力固定.Dynamic positioning of floating bridges is a novel method offering significant advantages over conventional pontoon bridge techniques.By considering the implications of modeling and dynamically positioning each dynamic boat making up the floating bridge,a nonlinear mathematical model of a dynamically positioned floating bridge could be formulated,where the floating bridge was considered as an entire system.The unloaded and moving load motions of the entire floating bridge were then analyzed.On this basis,a control system model was derived that would meet the needs of dynamic positioning.The performance of the floating bridge model was then investigated in terms of motions caused by current forces and so on.Simulation results showed that the proposed method is effective.It was observed that dynamic positioning of floating bridges is necessary to maintain their lateral stability.

关 键 词：浮桥 动力固定 动力学建模 控制系统模型 

分 类 号：O313[理学—一般力学与力学基础]