万向节轴系倾角对水下航行体声场辐射特性的影响

Influence of Shaft Angle of Cardan Joint on Acoustic Radiation Characteristics of Underwater Vehicle

摘要:

推进系统采用万向节传动时，由于万向节自身特性以及结构空间限制、安装精度等影响，使得传动系统存在轴间夹角和基座偏斜角，从而导致工作时产生附加载荷、振动和噪声，附加载荷作用于联接部件时会造成部件的受迫振动。鉴于此，对存在轴间夹角和基座偏斜角时传动轴本身的传动特性进行了 MATLAB 仿真分析，并对不同轴间夹角和基座偏斜角情况下航行器系统振动声辐射进行了测试，测试结果表明不同的轴系倾角对系统的振动声辐射存在一定影响，该结果对同类型产品的设计和安装调试具有一定的指导意义^[1]。

关键词:万向节传动;轴系倾角;水下航行器;声辐射

Abstract:

When a propulsion system is driven by the cardan joint，shaft angle and pedestal angle will be produced in the propulsion system due to the structural features，the limited structure space and the assembly accuracy of cardan joint，which will cause additional load，vibration and noise during operation. The additional load on the connecting parts will cause the forced vibration of the component. In view of this，the characteristics of the driving shaft are analyzed by MATLAB simulation when shaft angle and pedestal angle exist. Vibration sound radiation of the underwater vehicle under different shaft angles and pedestal installation angles is tested. Test result shows that shaft angles affect system’s vibration sound radiation，which has certain instructive significance to the design，installation and debugging of the same type of products^[1].

Key words:cardan drive;shaft angle;underwater vehicle;sound radiation