大中型磁悬浮控制力矩陀螺的框架优化设计方法研究

摘要

针对大中型磁悬浮控制力矩陀螺的框架,进行频率、重量和体积的设计优化。针对单框架磁悬浮控制力矩陀螺框架伺服系统中的工程化问题,设计了三种方案：单体带式、两体球壳和三体球壳等框架;经过频率、质量和工艺性的综合分析,选用了两体球壳框架的方案。采用先延长再剪切的求交点方法,建立框架体参数化模型的封闭截面线;引入正交试验设计,分析几何参数对框架频率和重量的影响,取其中的主要影响因素为设计变量;以框架的频率为约束条件,以重量最小为目标进行设计优化。优化后质量较优化前减少了0.54kg,频率达到1000Hz以上,满足磁悬浮控制力矩陀螺系统的控制稳定性要求。最后,给出了产品实例和额定转速的磁轴承位移波形图。%Analysis and design optimization are carried out based on frequency, mass and volume for the frame, which is the key structure part of large and middle Magnetically Suspended Control Moment Gyroscope（MSCMG）. The characteristics of the design schemes of cylinder-belly frame, two-part sphere frame and tri-part sphere frame are discussed. The Or- thogonal Experiment Design （OED） is applied to recognize the primary factors of the geometry parameters of the two- part sphere frame. The design optimization model is established with the constraint of frequency, the objective of mini- mum mass and the design variable of the primary factors. Results of the design optimization indicate that the mass is reduced by 0.54kg and the frequency is above 1000Hz, which satisfy the stability requirement of the control system. Product examples and pictures of magnetic bearing displacement are presented.