Predictive Control for Alleviation of Gust Loads on Very Flexible Aircraft
Predictive Control for Alleviation of Gust Loads on Very Flexible Aircraft
复制标题
用于减轻非常灵活的飞机阵风载荷的预测控制
DOI：
10.2514/6.2014-0843
复制
发表时间：
2014
影响因子：
--
通讯作者：
P. Goulart
中科院分区：
文献类型：
--
作者：
R. Simpson;R. Palacios;H. Hesse;P. Goulart
在这项工作中，非常灵活的飞机的动力学描述了一组非线性，
多学科运动方程主要结构部件为
由几何上精确的复合梁模型表示，
飞机的动态变形和刚体与弹性体之间的相互作用
自由度此外，本文还介绍了一种非定常涡格的实现方法。
能够处理任意运动学的方法用于捕获非定常，
飞机变形时周围的三维流场。线性化
耦合的非线性描述，它通常可以是关于一个非线性参考
状态，以产生相对高阶的线性时不变状态空间模型。
随后使用标准平衡截断结果对这些模型进行简化
在低阶模型的合成适合在线，优化为基础的控制
包含致动器约束的方案。综合预测控制器
利用这些降阶模型，并应用于非线性仿真的植物
动态，其中它们被证明是上级等效的最优线性控制器
(LQR)对于其中约束是活动的问题。
In this work the dynamics of very flexible aircraft are described by a set of nonlinear,
multi-disciplinary equations of motion. Primary structural components are
represented by a geometrically-exact composite beam model which captures the large
dynamic deformations of the aircraft and the interaction between rigid-body and elastic
degrees-of-freedom. In addition, an implementation of the unsteady vortex-lattice
method capable of handling arbitrary kinematics is used to capture the unsteady,
three-dimensional flow-field around the aircraft as it deforms. Linearization of this
coupled nonlinear description, which can in general be about a nonlinear reference
state, is performed to yield relatively high-order linear time-invariant state-space models.
Subsequent reduction of these models using standard balanced truncation results
in low-order models suitable for the synthesis of online, optimization-based control
schemes that incorporate actuator constraints. Predictive controllers are synthesized
using these reduced-order models and applied to nonlinear simulations of the plant
dynamics where they are shown to be superior to equivalent optimal linear controllers
(LQR) for problems in which constraints are active.
影响因子：
4.7
作者：
Hesse, Henrik;Palacios, Rafael
通讯作者：
Palacios, Rafael
尾流涡流遭遇中的动态载荷减轻
DOI：
10.2514/1.g000715
发表时间：
2016
期刊：
Journal of Guidance, Control, and Dynamics
影响因子：
--
作者：
Hesse H
通讯作者：
Hesse H