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对采用分布式压电驱动器升力面的颤振主动抑制进行了理论与试验研究.应用 LQG最优控制法设计了主动控制律,在控制律降阶时提出了平衡实现与LK法结合使用的新途径,在对不定常气动力进行有理函数拟合时对LS法进行了改进.试验中利用激光测速仪非接触测量模型的速度响应并在地面共振试验中用压电驱动器激振模型.颤振风洞试验结果表明,理论计算合理并与试验结果吻合良好.
The theory and experimental research on the active suppression of chatter vibration on distributed piezoelectric actuator is carried out.An active control law is designed by using the LQG optimal control method and a new balance control method is put forward when the control law is reduced with LK method Method was used to improve the LS method in the case of a rational function fitting of unsteady aerodynamics.The velocity response of the model was measured by non-contact laser velocimetry and the piezoelectric actuator was used to excite the model in ground resonance test. Wind tunnel test results show that the theoretical calculation is reasonable and in good agreement with the test results.