Enhanced eigenstructure assignment for aeroelastic control application
Enhanced eigenstructure assignment for aeroelastic control application
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DOI：
10.15480/882.222
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发表时间：
2004-09
影响因子：
5.6
通讯作者：
M. Merkel;M. Gojny;U. Carl
中科院分区：
文献类型：
--
作者：
M. Merkel;M. Gojny;U. Carl
提出了一种复杂的鲁棒控制器设计方法，用于使用主飞行控制（PFC）调节弱阻尼气动弹性结构。该方法基于特征值特征向量分配，并且能够考虑时域或频域中潜在的竞争目标规范以及参数约束。无限组的飞行条件和燃油负载分布使我们将底层的气动伺服弹性装置表示为线性多变量多模型系统，为此根据技术可行性、参数和动态不确定性、架构和传感器布局约束寻求鲁棒的输出反馈控制器。虽然特征值特征向量分配方法在飞行控制设计和模态解耦领域众所周知，但这里的主要目标是将其应用于约束同时鲁棒特征值稳定。由于固有控制器计算是作为多目标优化问题实现的，因此可以在问题公式中指定气动伺服弹性性能规范。通过对真实 PFC 硬件在环驱动系统（无论是正常配置还是降级配置）的实时仿真，证明了所得低阶静态输出控制器的适用性。
A sophisticated robust controller design method for regulation of weakly damped aeroelastic structures using the primary flight controls (PFC) is presented. The approach is based on eigenvalue eigenvector assignment, and is capable of taking into account potentially competing objective specifications in either time or frequency domains, as well as parametric constraints. The infinite set of flight conditions and fuel load distributions lead us to represent the underlying aeroservoelastic plant as a linear multivariable multi-model system, for which a robust output feedback controller is sought in line with technical feasibility, parametric and dynamic uncertainty, architectural and sensor layout constraints. While the method of eigenvalue eigenvector assignment is well known in the fields of flight control design and modal decoupling, here the primary objective is to apply it to constrained simultaneous robust eigenvalue stabilisation. Since the intrinsic controller calculation is implemented as an multiobjective optimisation problem, aeroservoelastic performance specifications can be specified in the problem formulation. The suitability of the resulting low-order static output controller is demonstrated via real-time simulation of a real PFC hardware-in-the loop actuation system, both for normal and degraded configurations.