航空发动机过渡态全局寻优控制方法研究
A global optimization approach to aero-engine under transient conditions
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摘要: 为了对发动机的动态过程进行控制, 提出了一种基于SQP的全局寻优控制方法.每一步寻优过程分为长程优化和短程优化两个阶段.根据长程优化结果, 重构了关联目标函数, 在此基础上, 进行了短程优化修正, 并利用修正结果进行控制.将这种方法应用于某型航空发动机的过渡态控制中, 得到了理想的控制结果.仿真结果表明该方法能较好地解决一般局部优化方法在有纯延迟、模型失配等情况下的优化控制效果下降的问题.Abstract: A global optimization based on sequential quadratic programming(SQP) is proposed for aero engine control in dynamic process.Optimization process consists of an overall and a component phase.The authors have implemented algorithm which employs the overall optimal results to redesign relating objective functions.Based on this,component optimization has been carried out with the purpose of correction and the result has been used for cycle control.This approach is applied to aero-engine control under transient conditions.As a result,the process is perfect.The simulation showed that this method can solve the problem that the general local optimization is unfeasible for the system with pure delay part and unmatched model.
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Key words:
- aerospace propulsion system /
- global optimal control /
- aero engine /
- nonlinear system /
- overall phase /
- component phase
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[1] 茨木俊秀,福岛雅夫.最优化方法[M].北京:世界图书出版社,1997. [2] 杨冰.实用最优化方法及计算机程序[M].哈尔滨:哈尔滨船舶工程学院出版社,1994. [3] Daniele P,Campana E F.High-fidelity models and multiobjective global optimization algorithms in simulationbased design[J].Journal of Ship Research,2005,49(3):159-175. [4] Dachwald B.Evolutionary neurocontrol a smart method for global optimization of low thrust trajectories[R].AIAA 2004-5405. [5] Branscome C,Mavris D.A regression confidence band approach to global optimization[R].AIAA 2004-4463. [6] 戚学峰,樊丁,陈耀楚.用多目标FSQP算法实现涡扇发动机多变量非线性控制[J].西北工业大学学报,2004,22(5):644-648.QI Xuefeng,FAN Ding,CHEN Yaochu.On a novel multiobjective FSQP algorithm for multi-variable nonlinear control of turbofan engine[J].Journal of Northwestern Polytechnical University,2004,22(5):644-648. [7] 陈光明,樊丁.SQP方法在航空发动机加速控制中的应用研究[J].航空动力学报,1999,14(3):313-316.CHEN Guangming,FAN Ding.Application of SQP to aerospace power[J].Journal of Aerospace Power,1999,14(3):313-316. [8] Christof B,Helmut M.SQP-methods for solving optimal control problems with control and state constraints adjoint variables:sensitivity analysis and real-time eontr[J].Journal of Computational and Applied Mathematics,2000,120(1):85-108. [9] 丁凯峰,樊思齐.变几何涡扇发动机加速控制规律优化设计[J].推进技术,1999,20(2):17-20.DING Kaifeng,FAN Siqi.Optimal design of accelerating control law for variable geometry turbofan engine[J].Journal of Propulsion Technolo,1999,20(2):17-20. [10] 金以慧.过程控制[M].北京:清华大学出版社,1999. -
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