具有弹性底座和灵活链接的平面空间机器人的反死区自适应模糊动态表面控制
Xiao-Qin Huang1, Deng-Feng Huang2
1College of Physics and Electronic Information Engineering, Minjiang University, Fuzhou City, 350108, Fujian Province, People's Republic of China. hxq582p@163.com.
Scientific reports
|December 7, 2023
概括
本研究提出了一种新的控制策略,用于具有灵活组件的自由浮动空间机器人. 该方法有效地抑制振动,改善轨迹跟踪,即使在联合输入扭矩死区.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 控制系统工程 控制系统工程
- 航空航天工程 航空航天工程
背景情况:
- 具有多个灵活环节和弹性基础的太空机器人在轨迹跟踪和压制振动方面面临挑战.
- 联合输入扭矩中的"死区"进一步使控制复杂化,导致性能下降.
研究的目的:
- 为多灵活链路自由浮动空间机器人制定有效的控制策略.
- 为了同时解决轨迹跟踪和抑制振动的问题,同时减轻联合死区的影响.
主要方法:
- 灵活的太空机器人系统的动态模型是通过假设模式方法得出的.
- 单一扰动理论被用来将系统分解为缓慢 (刚性运动) 和快速 (振动) 的子系统.
- 带有自适应模糊近似器的动态表面控制是为缓慢子系统设计的,用于处理死区.
- 为快速子系统设计了一个最佳的线性二次调节器 (LQR) 控制器,以抑制振动.
主要成果:
- 拟议的动态表面控制有效地弥补了联合输入扭矩中的死区不确定性.
- 该LQR控制器成功地抑制了弹性底部和灵活链接中的振动.
- 模拟显示了系统的稳定性和改进的轨迹跟踪精度.
结论:
- 综合控制策略有效地解决了灵活的自由浮动空间机器人的轨迹跟踪和振动抑制问题.
- 动态表面控制和LQR的组合为具有死区非线性系统提供了强大的解决方案.
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