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全动垂尾结构不同于铰接方向舵的垂直安定面结构。该文深入研究了全动垂尾抖振响应的压电驱动控制、垂尾旋转控制以及混合压电控制和垂尾旋转控制的三种主动控制方法。使用压电驱动的载荷比拟方法对压电纤维复合材料(MFC)驱动器进行建模,利用偶极子格网法计算随体空气动力。采用线性二次型高斯最优控制(LQG)方法分别设计三种模型的控制律。分析三种控制模型的抖振响应,研究其控制效果的差异,并进行比较。结果表明:压电控制因受控制电压和压电功放所限,控制效果有限;垂尾旋转控制由于受限于控制频率,对高频激励控制效果不明显;混合控制方法兼具垂尾旋转控制和压电控制两种方法的优点,能同时降低低阶模态和高阶模态上的能量,从而扩大了控制频率的范围,因此其控制效果最好;最后,通过具有不同结构参数的全动垂尾模型的算例,验证了混合抖振控制方法的可行性和有效性。
Full-motion tail structure is different from the hinged rudder vertical stabilizer structure. In this paper, three kinds of active control methods of piezoelectric driving control, vertical tail rotation control, mixed piezoelectric control and vertical tail rotation control are studied in detail. Piezoelectric fiber composites (MFC) actuators were modeled using a piezo-driven load simulation method and the satellite aerodynamic force was calculated using the dipole grid method. The linear quadratic Gaussian optimal control (LQG) method is used to design the control laws of the three models respectively. The chattering responses of the three control models are analyzed and their differences in control effects are studied and compared. The results show that the piezoelectric control is limited by the control voltage and the piezoelectric power amplifier, and the control effect is limited. The vertical tail rotation control is not obvious to the high-frequency excitation control due to the limited control frequency. The hybrid control method has vertical tail rotation control And the piezoelectric control of the advantages of the two methods can simultaneously reduce the low-order mode and high-order mode of energy, thereby expanding the control frequency range, so the control effect of the best; Finally, with different structural parameters of the whole droop The example of the tail model verifies the feasibility and effectiveness of the hybrid chattering control method.