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使用固定摄像头的灵活机器人操纵器的非线性观察者视觉伺服和振动控制
IEEE transactions on cybernetics
|September 13, 2023
概括
本研究介绍了只使用摄像头反的灵活操纵器的视觉控制方法. 它有效调节位置并抑制振动,无需进行系统状态测量.
科学领域:
- 机器人和控制系统 机器人和控制系统
- 机械电子学是什么意思 机械电子学
- 应用数学 应用数学 应用数学
背景情况:
- 灵活的操纵器由于其无限维的性质和无法测量的状态,因此存在控制挑战.
- 视觉伺服为机器人控制提供了一个有前途的方法,但通常需要准确的系统状态信息.
- 抑制振动对于轻型机器人系统的精确运动控制至关重要.
研究的目的:
- 为具有无法测量的状态的灵活操纵器开发视觉伺服和抑制振动的控制策略.
- 为了使控制只使用图像反,简化实施和减少传感器要求.
- 为了同时调节功能点位置和减轻操纵器振动.
主要方法:
- 用单一扰动理论将操纵器动态分解为缓慢和快速的子系统.
- 使用李导数的非线性观测器的设计,用于同时估计系统状态和未知的摄像头参数.
- 基于图像的控制器设计,用于使用估计状态的缓慢和快速子系统.
- 使用利亚普诺夫理论进行稳定性分析.
主要成果:
- 同时调节图像特征点位置和抑制灵活的操纵器振动.
- 成功估计了无法测量的系统状态和未知的摄像头内在参数.
- 通过对灵活的单环操纵器的实验结果来证明控制的有效性.
- 验证拟议的控制方案的稳定性.
结论:
- 提出的基于图像的控制方法有效地解决了灵活操纵器的视觉伺服和振动抑制问题.
- 该方法通过仅依赖视觉反来简化控制器的实现.
- 这种方法是强大的和稳定的,由Lyapunov理论和实验验证证明.
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