Incremental control strategies have been proposed recently to reduce the dependence on the aircraft model. However, the technique still requires modeling the actuator effectiveness, which depends on inertial and aerodynamic parameters. Therefore, it is of the utmost importance to analyze the robustness of the strategy regarding these parameters. This work focuses on evaluating the robustness of an incremental backstepping strategy applied for automatic control of a Boeing 747 (B747). A sensitivity analysis is carried out to quantify the impact of inertial parameters and flight condition in the input effectiveness, whose results are used to define scheduling strategies for the incremental controller. A robustness analysis is then performed using a B747 simulator applying different maneuvers in several flight conditions. The flight performance is evaluated according to the military standard MIL-DTL-9490E. Results show that the proposed controller is robust to mismatches in the input effectiveness model, evidencing that even without using a scheduling strategy the controller is able to perform within the requirements specified in the standard.

中文翻译：

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增量式反步飞行控制器的鲁棒性：波音 747 案例研究


最近提出了增量控制策略来减少对飞机模型的依赖。然而，该技术仍然需要对执行器有效性进行建模，这取决于惯性和空气动力学参数。因此，分析有关这些参数的策略的稳健性至关重要。这项工作的重点是评估应用于波音 747 (B747) 自动控制的增量反步策略的稳健性。进行灵敏度分析以量化惯性参数和飞行条件对输入有效性的影响，其结果用于定义增量控制器的调度策略。然后使用 B747 模拟器在多种飞行条件下应用不同的机动进行鲁棒性分析。飞行性能按照军用标准MIL-DTL-9490E进行评估。结果表明，所提出的控制器对于输入有效性模型中的不匹配具有鲁棒性，这证明即使不使用调度策略，控制器也能够在标准中指定的要求内执行。