关节延伸速度决定了生物启发的变形轨迹,以获得最佳的纵向飞行动力学
1Department of Mechanical and Aerospace Engineering, University of California , Davis, CA 95616, USA.
Journal of the Royal Society, Interface
|April 24, 2024
概括
鸟类翅膀的变形使复杂的飞行机动成为可能. 一个新的线性参数变化 (LPV) 飞行模型显示,海的自然翅膀形态不是最佳的,但足够的,这表明海需要速度反以获得更好的控制.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 生物力学 生物力学
- 航空航天工程 航空航天工程
背景情况:
- 鸟类翅膀的变形促进了动态飞行控制.
- 现有的模型 (线性时间不变) 缺乏对时间依赖的变形效应的洞察力.
研究的目的:
- 开发和利用一个线性参数变化 (LPV) 模型,用于变形翼飞行.
- 为了研究对不同关节延伸轨迹的纵向飞行反应.
主要方法:
- 实现了一个LPV模型,将机翼关节角度作为计划参数.
- 考虑到非线性动力学和引力效应.
- 在线性时间不变模型之间在离散的剪切点进行插曲.
主要成果:
- 针对速度和俯仰控制目标的优化延伸轨迹揭示了低于最佳的自然海翅膀变形.
- 固有的海翅膀轨迹提供了足够的响应与更简单的机械.
- 猫可能需要延伸速度反来增强控制.
结论:
- 开发的变形LPV模型为航空飞行控制机制提供了洞察力.
- 这项研究可能有助于设计具有高度机动性,类似于鸟类的无人驾驶飞行器.
相关概念视频
One-Degree-of-Freedom System
487
In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
487
Absolute Motion Analysis- General Plane Motion
219
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
219
Eccentric Axial Loading in a Plane of Symmetry
189
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
189
Relative Motion Analysis - Velocity
359
A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
359
Kinematic Equations - II
9.5K
The second kinematic equation expresses the final position of an object in terms of its initial position, the distance traveled with the initial constant velocity, and the distance traveled due to a change in velocity. Similar to the first kinematic equation, this equation is also only valid when the acceleration is constant throughout the motion of an object.
Suppose a car merges into freeway traffic on a 200 m long ramp. If its initial velocity is 10 m/s and it accelerates at 2 m/s2, then the...
Suppose a car merges into freeway traffic on a 200 m long ramp. If its initial velocity is 10 m/s and it accelerates at 2 m/s2, then the...
9.5K
Kinematic Equations - III
7.6K
The first two kinematic equations have time as a variable, but the third kinematic equation is independent of time. This equation expresses final velocity as a function of the acceleration and distance over which it acts. The fourth kinematic equation does not have an acceleration term and provides the final position of the object at time t in terms of the initial and final velocities. This equation is useful when the value of the constant acceleration is unknown.
Using the kinematic equations,...
Using the kinematic equations,...
7.6K


