航空发动机转子突加不平衡参数分析及LQR控制技术应用

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (17) : 174-179.

论文

岳聪1，任兴民1，邓旺群2，杨永锋1

作者信息 +

Sudden change unbalance analysis and LQR control application on aeroengine rotor system

YUE Cong1 , REN Xing min1 , DENG Wang qun2 , YANG Yong fen1

Author information +

文章历史 +

摘要

为分析航空发动机转子系统升速和正常工作时不平衡突变现象，推导了突变时刻动力参数的瞬时变化以及线性二次型调节器(LQR)在变速转子上的作用过程。通过有限元法和传递矩阵法建立动力涡轮转子瞬态响应分析模型并验证其有效性。研究了支承刚度变化和突变量变化对动力参数瞬时响应变化的影响以及基于主动控制技术下突加不平衡瞬时响应的变化过程。研究发现，支承刚度和不平衡量变化对瞬时突变的参数响应具有一定的影响变化规律，LQR能有效降低突变引起的不平衡瞬态响应。

Abstract

To analyze aeroengine varying speed rotor system with sudden change mass in accelerating process and work condition, the equations of dynamic parameters based on the instantaneous changing on the unbalance and the action process of linear quadratic regulator(LQR) on the rotor system are proposed. Both finite element method and transfer matrix method are used to establish the analysis model of power turbine rotor and verify the effectiveness. The influence of bearing stiffness, sudden change mass and LQR controller to the transient response of dynamic parameters is researched. This study finds that stiffness has a certain regular rules to the change of parameters and LQR can effectively reduce the transient response of amplitude caused by sudden change.

导出引用

岳聪1，任兴民1，邓旺群2，杨永锋1. 航空发动机转子突加不平衡参数分析及LQR控制技术应用[J]. 振动与冲击, 2015, 34(17): 174-179

YUE Cong1,REN Xing min1,DENG Wang qun2,YANG Yong fen1. Sudden change unbalance analysis and LQR control application on aeroengine rotor system[J]. Journal of Vibration and Shock, 2015, 34(17): 174-179

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