Dipteran insect flight dynamics. Part 1 Longitudinal motion about hover
Dipteran insect flight dynamics. Part 1 Longitudinal motion about hover
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DOI：
10.1016/j.jtbi.2010.02.018
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发表时间：
2010-05-21
影响因子：
2
通讯作者：
Humbert, J. Sean
中科院分区：
文献类型：
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作者：
Faruque, Imraan;Humbert, J. Sean
本文提出了双翅目昆虫纵向悬停飞行动力学的降阶模型。通过包含平衡态的扰动状态并与刚体运动方程配对，对准稳态机翼空气动力学模型进行了扩展，以创建果蝇类昆虫的非线性模拟。基于频率的系统识别工具用于识别从生物启发控制输入到刚体状态的传递函数。还确定了稳定性导数和描述动力学的状态空间线性系统。车辆控制要求根据传统的人类飞行员操作质量规范进行量化。发现升沉动力学与俯仰/前/后动力学分离。 Haltere-on 系统揭示了一个具有慢速（升沉）和快速沉降模式以及稳定振荡模式的稳定系统。 Haltere-off（裸机身）系统揭示了缓慢（升沉）和快速沉降模式以及不稳定的振荡模式，这是与 CFD 研究一致的模态结构。分析表明，被动空气动力机制有助于稳定性，这可能有助于解释昆虫如何能够在非常小的计算预算下实现稳定的运动。 (C) 2010 年，爱思唯尔有限公司出版。
This paper presents a reduced-order model of longitudinal hovering flight dynamics for dipteran insects. The quasi-steady wing aerodynamics model is extended by including perturbation states from equilibrium and paired with rigid body equations of motion to create a nonlinear simulation of a Drosophila-like insect. Frequency-based system identification tools are used to identify the transfer functions from biologically inspired control inputs to rigid body states. Stability derivatives and a state space linear system describing the dynamics are also identified. The vehicle control requirements are quantified with respect to traditional human pilot handling qualities specification. The heave dynamics are found to be decoupled from the pitch/fore/aft dynamics. The haltere-on system revealed a stabilized system with a slow (heave) and fast subsidence mode, and a stable oscillatory mode. The haltere-off (bare airframe) system revealed a slow (heave) and fast subsidence mode and an unstable oscillatory mode, a modal structure in agreement with CFD studies. The analysis indicates that passive aerodynamic mechanisms contribute to stability, which may help explain how insects are able to achieve stable locomotion on a very small computational budget. (C) 2010 Published by Elsevier Ltd.