螺旋桨静平衡检测算法改进及实验研究

Algorithm Improvement and Experimental Research for Propeller Static Balancing Detection

针对大型船用螺旋桨制造完成后存在的静不平衡量的问题,基于静压球面轴承悬浮结构开发了螺旋桨立式静平衡检测装置。在对其结构和工作原理进行分析的基础上,利用力矩平衡原理,提出改进的求解螺旋桨静不平衡量的算法,能快速地计算出不平衡质量和其位置。通过一次性打磨或配重,将螺旋桨静不平衡量控制在允许范围内,简化了传统的反复多次打磨配重的过程;同时数据采集处理系统以单片机为核心对称重传感器数据进行采集、处理和显示。试验结果表明,该检测系统在试验过程中运行稳定,测量数据精确。

In view of the problem that the static unbalance that can be found until large marine propeller is man- ufactured, based on the suspension structure for the hydrostatic spherical bearing, a special detection device of ver- tical static balance for large marine propeller is researched and developed. On the basis of the analysis of its struc- ture and working principle, the improved algorithm of solving static unbalance for propeller based on moment bal- ance principle are proposed, which can quickly calculate the unbalanced mass and its location. The propeller＇ s static unbalance can be eliminated into the allowable range through grinding or counterweighing one time, simplify- ing the traditional propeller grinding or counterweighing in large extend. And the data for weighing sensor is collect- ed, processed and displayed by the data collection and disposal system with microcontroller at the core. The test re- sults indicated that the system is stable operation in the process of test, and measurement is accurate.