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Limit Cycle Oscillation Control for Transonic Aeroelastic Systems Based on Support Vector Machine Reduced Order Model

机译:基于支持向量机降阶模型的跨音速气动弹性系统极限环振荡控制

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摘要

Due to the difficulty in accurately predicting the limit cycle oscillation (LCO) generated by nonlinear unsteady aerodynamics in the transonic regime, neither the traditional system identification nor eigenmode-based reduced order model (ROM) are suitable for designing active LCO control law. A support vector machine (SVM) based ROM is investigated and an active control law design method based on the new ROM is proposed. A three-degree-of-freedom pitch and plunge aeroelastic systems in transonic flow is successfully demonstrated for the SVM-based ROM. The simulation results indicate that the active LCO control law can be designed and evaluated with good accuracy and efficiency by the SVM itself without requiring intensive simulations of the CFD/CSD couple solver.
机译:由于难以准确预测跨音速状态中非线性非定常空气动力学产生的极限循环振荡(LCO),因此传统的系统识别和基于本征模的降阶模型(ROM)都不适合设计主动LCO控制律。研究了一种基于支持向量机的ROM,并提出了一种基于新ROM的主动控制律设计方法。对于基于SVM的ROM,成功地证明了跨音速流中的三自由度俯仰和俯冲气动弹性系统。仿真结果表明,无需支持CFD / CSD耦合求解器的大量仿真,就可以通过SVM本身来设计和评估有源LCO控制律。

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