A dynamic positioning capability evaluation method under the combined action of propellers and rudders comprises a plurality of propellers and a plurality of main propellers, the propellers comprise a full-revolving propeller and a side propeller, and thrust of the propellers in different directions is obtained; longitudinal and transverse forces jointly provided by the main propeller and the rudder are obtained; calculating load components of the external load at different degrees of freedom; combining the thrust of the thruster, a main propeller and a rudder to generate longitudinal and transverse forces, and establishing an optimal control equation with an external load; solving thrust distribution by adopting a nonlinear programming algorithm; and according to the input environmental conditions, calculating a wind resistance curve in a range of 0-360 degrees. The method is suitable for rapid evaluation of the dynamic positioning capability of a complex system with a paddle rudder, and is beneficial to shortening the design and development period. The problem of thrust loss of the thruster is effectively considered, and the problems existing in the prior art are well solved. Various limiting factors on the use power of the propeller in the actual use of dynamic positioning are considered, and the actual requirements in engineering are met.
一种桨舵联合作用下的动力定位能力评估方法,包括多个推进器和多个主螺旋桨,推进器包括全回转推进器和侧推,获得推进器在不同方位上推力;得到主螺旋桨和舵联合提供的纵向、横向力;计算外界载荷在不同自由度的载荷分量;结合推进器推力、主螺旋桨和舵联合产生纵向、横向力,与外界载荷建立优化控制方程;采用非线性规划算法求解推力分配;根据输入的环境条件,计算0‑360度范围内的抗风能力曲线。本发明适合于带有桨舵的复杂系统的动力定位能力快速评估,有利于缩短设计开发周期。有效考虑了推进器推力损失问题,很好的解决了已有技术存在的问题。考虑了动力定位实际使用中对于推进器使用功率的多种限制因素,满足工程中的实际需要。
Method for evaluating dynamic positioning capability under combined action of propeller and rudder
一种桨舵联合作用下的动力定位能力评估方法
2024-01-05
Patent
Elektronische Ressource
Chinesisch
Experiments on mutual action between propeller and rudder
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