CAJ | 학술논문

针对磁悬浮电机转子系统模态分析误差较大的问题，提出考虑转子组件间的非线性接触行为，基于罚函数方法通过修正优化接触刚度因子实现对电机柔性转子系统模态的精确分析。通过建立弹性支承转子-轴承系统有限元分析模型，得到了在不同的支承刚度下转子系统前10阶固有频率的仿真值及变化规律。进行模态测试实验验证，结果表明仿真分析和测试值吻合较好，并对加动平衡环后的转子系统进行固有频率的仿真，其结果的准确性在试验样机穿越临界转速时得到了验证。
침대자현부전궤전자계통모태분석오차교대적문제，제출고필전자조건간적비선성접촉행위，기우벌함수방법통과수정우화접촉강도인자실현대전궤유성전자계통모태적정학분석。통과건립탄성지승전자-축승계통유한원분석모형，득도료재불동적지승강도하전자계통전10계고유빈솔적방진치급변화규률。진행모태측시실험험증，결과표명방진분석화측시치문합교호，병대가동평형배후적전자계통진행고유빈솔적방진，기결과적준학성재시험양궤천월림계전속시득도료험증。
According to the large error problem of modal analysis of the rotor system for magnetic levitation motors, the nonlinear contact behavior between rotor components was considered. The flexible rotor system modal can be analyzed accurately based on the penalty method by optimizing the contact stiffness factor. Through the establishment of the rotor-bearing system finite element analysis model, the ten order natural frequencies and variations of the rotor system under different bearing stiffness were obtained. The simulation results are in good agreement with the test values. This article also analyzed the rotor system with the dynamic balancing ring. The accuracy of results has been proved by the critical speed tests of the experimental prototype.