非单一的预定义时间滑动模式轨迹跟踪控制不确定操纵器的预定义时间延长状态观察者.
Jun Nie1, Lujiao Dong1, Qiaoqiao Sun1
1College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China.
ISA transactions
|September 16, 2025
概括
本研究介绍了一种新的双层滑动模式控制策略,用于操纵器,在预定义的时间内实现全球轨迹跟踪,尽管存在不确定性和干扰. 先进的控制确保了机器人系统的强大性能和稳定性.
科学领域:
- 机器人和控制系统 机器人和控制系统
- 先进的控制理论 控制理论
- 机械电子学是什么意思 机械电子学
背景情况:
- 机器人操纵器面临来自模型不确定性,外部干扰和执行器限制的挑战.
- 准确的速度估计和干扰排斥对于精确的轨迹跟踪至关重要.
- 现有的控制方法往往会与奇点问题和执行器和度作斗争.
研究的目的:
- 为操纵器开发一个全球预定义时间嵌入式双层滑动模式控制策略.
- 为了解决模型的不确定性,外部干扰,未知的速度测量和执行器和.
- 在预定义的时间内实现全球轨迹跟踪.
主要方法:
- 一个预定义时间延长状态观测器 (PTESO) 估计未知的速度和复合干扰.
- 一个两层的滑动模式控制器包括一个非线性预定义时间的滑动模式控制器 (PTSMC) 与一个零碎的非线性功能,以减轻奇点.
- 一个预定义时间的抗和补偿器 (PTASC) 处理执行器和,保持跟踪性能和稳定性.
- 预定义时间稳定理论和利亚普诺夫法用于稳定性验证和收分析.
主要成果:
- PTESO成功地观察到未知的速度信息和复合干扰.
- 两层的PTSMC战略有效地处理局限性扰动,并保证PTESO的稳定性.
- PTASC减轻了执行器和效应,保持了强大的跟踪和系统稳定性.
- 闭环系统显示了预先定义的时间趋同和稳定性.
结论:
- 拟议的控制方案在预定义的时间内实现对操纵器的全球轨迹跟踪.
- 该策略有效地解决了模型不确定性,干扰,未知速度和执行器和.
- 模拟结果验证了设计的控制方法的显著有效性和实用性.
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