摘要
提出一种基于主动艉支承的推进轴系横向振动传递控制方法,以抑制水下航行器的低频声辐射。该方法将传统的艉轴承支承方式由面支承改为点支承,通过六个主动作动器抑制螺旋桨横向激励力经由艉轴承向壳体的传递。建立包含主动艉支承的螺旋桨-推进轴系-壳体耦合系统动力学模型,分析系统振动传递特性及控制策略可行性;结合自适应控制算法,计算螺旋桨横向激励下的振动传递抑制效果。构建包含主动艉支承的螺旋桨-推进轴系-壳体实验系统,进一步验证控制方法的有效性。仿真与实验结果均表明主动艉支承对于螺旋桨横向激励力经由艉轴承向壳体的传递具有明显抑制效果,可有效降低壳体表面法向振动。
Here, an active control method was proposed to suppress lateral vibration transmission in a shaft-hull coupled system of an underwater vehicle subjected to propeller force excitation. An active stern support with a Stewart structure to replace the traditional surface support at stern bearing position was employed to suppress vibration transmission from the vehicle’s shafting system to its hull structure. The dynamic model for the vehicle’s propeller with the active stern support-shafting system-hull coupled system was established to analyze the system’s vibration transmission characteristics and the feasibility of active control strategy. The adaptive control algorithm was used to compute the vibration transmission suppression effect under lateral excitation of propeller forces. A test platform for the propeller with an active stern support-shafting system-hull coupled system was built to verify the effectiveness of the control method. Simulation and test results showed that the active stern support can obviously suppress lateral vibration transmission from stern bearing to hull under propeller force excitation to effectively reduce normal vibration of hull surface.
作者
谢溪凌
任明可
黄修长
张志谊
XIE Xiling;REN Mingke;HUANG Xiuchang;ZHANG Zhiyi(State Key Laboratory of Mechanical Systems and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Vibration,Shock&Noise,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2020年第15期271-276,共6页
Journal of Vibration and Shock
基金
国家自然科学基金(11672180)
上海市科技启明星计划项目(18QA1402000)。
关键词
轴系横向振动
主动艉支承
自适应控制
振动传递抑制
lateral vibration of a shafting system
active stern support
adaptive control
vibration transmission suppression
