为灵活的航天器设计基于固定时间观察者的自适应非单元滑动模式控制器.
Erfan Rezaei1, Hossein Bolandi1, Mohammad Fathi1
1Electrical Engineering Department, Iran University of Science and Technology, Tehran, Iran.
本研究介绍了灵活航天器的固定时间控制策略,确保尽管振动和不确定性,准确的态度控制. 该方法保证在一定的时间内达到所需的姿势,增强稳定性和强度.
科学领域:
- 航空航天工程 航空航天工程
- 控制系统理论 控制系统理论
- 机器人技术 机器人技术 机器人技术
背景情况:
- 灵活的航天器由于振动和无法测量的模式变量而表现出复杂的动态.
- 传统的控制方法与未知的干扰和固有的不确定性作斗争,影响着态度控制的准确性.
- 固定时间控制在有限的,预先规定的时间内提供了保证的融合,这对于时间敏感的任务至关重要.
研究的目的:
- 为灵活的航天器制定一个固定时间稳定策略.
- 解决灵活模式振动,未知的干扰和系统不确定性所带来的挑战.
- 为了在定义的时间框架内实现准确和强大的姿态控制.
主要方法:
- 固定时间观测器的设计,用于估计不可测量的模态变量.
- 开发使用估计变量的固定时间非单元滑动模式控制器.
- 纳入适应性法律,以提高对外部干扰和不确定性的稳定性.
- 使用利亚普诺夫理论进行稳定性分析,以保证趋同.
主要成果:
- 设计的观察者保证了模态变量估计错误的固定时间趋同.
- 控制器确保航天器在预先指定的时间内达到所需的态度,减少稳定状态错误.
- 适应性法增强了对未知的干扰和不确定性的稳定性.
- 稳定性分析证实了观察者和态度错误在固定的值内趋同.
结论:
- 拟议的固定时间控制方法有效地实现了灵活航天器的准确和强大的姿态稳定.
- 固定时间观察员和自适应控制器的集成显著提高了系统性能和弹性.
- 模拟结果验证了开发的控制系统的实际适用性和有效性.
更多相关视频
09:01Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
Published on: April 4, 2017
10:51An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces
Published on: March 10, 2011
相关概念视频
Controller Configurations
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
Linear Approximation in Time Domain
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
Feedback control systems
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
One-Degree-of-Freedom System
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...
Relative Motion Analysis using Rotating Axes-Problem Solving
Here, in order to determine the magnitude of velocity and acceleration for point...
Relative Motion Analysis using Rotating Axes
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
