GESO based RISE Controller for Active Flutter Suppression for Aeroelastic System

IF 1.9 4区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Computational and Nonlinear Dynamics Pub Date : 2024-05-21 DOI:10.1115/1.4065569

Balraj Sharma, Pooja Agrawal, Ajay Misra

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引用次数: 0

Abstract

The paper presents a Robust Integral of Signum of Error (RISE) controller for active suppression of flutter of a two dimensional aerofoil and it is integrated with a General Extended State Observer (GESO). Towards this, aerofoil model in state space is first changed into a canonical form. Then, the controller is designed using RISE control technique. As equations of system dynamics are not into integral chain form, a GESO is formulated to observe system states and disturbances. The controller is implemented using estimated states and it is robustified using estimated disturbance. Stability of the proposed GESO-RISE controller is established using the Lyapunov theory. Simulations are performed to check the proposed controller's performance against variations in airspeed, uncertainties in model parameters, external disturbances, time delay and unmodeled dynamics. Comparison of the proposed GESO-RISE controller is carried out with existing controllers using two performance criteria i.e. Control Efforts and Integral of Absolute Error (IAE). It is discovered from simulations that the proposed GESO-RISE controller significantly reduces IAE and control efforts. Additionally, Monte Carlo method is utilized to check robustness of the proposed GESO-RISE controller. The proposed GESO-RISE controller significantly enhances flutter boundary of aerofoil and is completely implementable.

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基于 GESO 的 RISE 控制器用于航空弹性系统的主动扑翼抑制

本文提出了一种用于主动抑制二维气膜扑翼的鲁棒误差积分（RISE）控制器，并将其与通用扩展状态观测器（GESO）集成。为此，首先将状态空间中的气膜模型转换为规范形式。然后，使用 RISE 控制技术设计控制器。由于系统动力学方程不是积分链形式，因此需要制定一个 GESO 来观察系统状态和干扰。控制器利用估计的状态来实现，并利用估计的干扰对其进行稳健化。利用 Lyapunov 理论确定了拟议 GESO-RISE 控制器的稳定性。针对空速变化、模型参数的不确定性、外部扰动、时间延迟和未建模动态，进行了仿真以检查拟议控制器的性能。利用两个性能标准，即控制努力和绝对误差积分（IAE），将所提出的 GESO-RISE 控制器与现有控制器进行了比较。模拟结果表明，拟议的 GESO-RISE 控制器大大减少了 IAE 和控制工作量。此外，还利用蒙特卡罗方法检查了所提出的 GESO-RISE 控制器的鲁棒性。所提出的 GESO-RISE 控制器大大提高了机翼的扑翼边界，并且完全可以实现。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Computational and Nonlinear Dynamics 工程技术-工程：机械

CiteScore

4.00

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The purpose of the Journal of Computational and Nonlinear Dynamics is to provide a medium for rapid dissemination of original research results in theoretical as well as applied computational and nonlinear dynamics. The journal serves as a forum for the exchange of new ideas and applications in computational, rigid and flexible multi-body system dynamics and all aspects (analytical, numerical, and experimental) of dynamics associated with nonlinear systems. The broad scope of the journal encompasses all computational and nonlinear problems occurring in aeronautical, biological, electrical, mechanical, physical, and structural systems.