相关实验视频
Updated: Jul 16, 2025

05:25
A Wind Tunnel for Odor Mediated Insect Behavioural Assays
Published on: November 30, 2018
11.8K
将平流层飞船的路径规划和后续控制与预测的风场数据集成在一起
Yifei Zhang1, Kejie Yang2, Tian Chen3
1School of Electronic and Information Engineering, PR China.
ISA transactions
|September 14, 2023
概括
本研究引入了用于平流层飞船路径规划和跟踪的综合控制方案,利用预测的风数据. 这种新的方法提高了控制,减少了错误,并为自动飞行节省了重要的控制输入更新.
科学领域:
- 航空航天工程 航空航天工程
- 控制系统 控制系统
- 机器人技术 机器人技术 机器人技术
背景情况:
- 由于缺乏实时飞速传感器和低动态特征,平流层飞船控制具有挑战性.
- 之前的研究往往忽视了这些因素对自动飞行的影响.
研究的目的:
- 为平流层飞船制定一个综合的路径规划和跟踪控制方案.
- 为应对空速数据缺失和低动态特征带来的挑战.
- 使用预测的风场数据实现可靠的自主飞行.
主要方法:
- 设计了一个高效且可行的路径规划算法.
- 为复杂的路径遵循提出了一个平滑的矢量场指导定律.
- 开发了一个基于事件触发的神经网络的自适应跟踪控制器,以应对风力预报错误.
主要成果:
- 成功整合了自主飞行路径规划,指导和控制.
- 严格证明了闭环系统的稳定性,并排除了Zeno行为.
- 实现了63.8%的融合率改善,在80秒内消除了跟踪错误,并节省了99.4%的控制输入更新时间.
结论:
- 综合控制方案有效地克服了平流层飞船控制方面的挑战.
- 提出的方法可以实现高效,优化和强大的自主飞行.
- 通过模拟,显著提高了性能和控制效率.
更多相关视频
相关概念视频
Turbulent Flow: Problem Solving
156
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
156
Plane Potential Flows
414
Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
Uniform...
Uniform...
414
Absolute Motion Analysis- General Plane Motion
240
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...
240
Uniform Depth Channel Flow: Problem Solving
85
To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
85
Laminar Flow: Problem Solving
210
Laminar flow occurs when a fluid moves smoothly in parallel layers with minimal mixing and turbulence. In fluid mechanics, ensuring laminar flow within a pipe is essential for precise control of flow characteristics, especially in engineering applications. The key factor in determining whether flow remains laminar is the Reynolds number, a dimensionless quantity that depends on the fluid's velocity, density, viscosity, and the pipe's diameter. A Reynolds number of 2100 or lower...
210
Relative Motion Analysis using Rotating Axes-Problem Solving
421
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Here, in order to determine the magnitude of velocity and acceleration for point...
421

