• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索

author:

Ai, Haiping (Ai, Haiping.) [1] | Jiang, Lei (Jiang, Lei.) [2] | Zhu, An (Zhu, An.) [3] | Fu, Xiaodong (Fu, Xiaodong.) [4]

Indexed by:

EI

Abstract:

In this paper, a fixed-time control strategy based on neural networks is proposed for a space robot with an input dead zone. First, a model-based control method is proposed based on the fixed-time convergence framework. Due to internal errors and external environmental disturbances, the inertial parameters of dynamic models generally exhibit uncertainties, and model-based control methods may exhibit deviations in trajectory tracking. In order to counteract the adverse effects of uncertain inertial parameters on the system and ensure the stability of the control system, an adaptive learning control method based on neural networks is further proposed. To enhance the learning rate of neural networks and achieve the convergence of neural weights within a fixed time, a neural network update rate combined with virtual control rate is proposed. In addition, considering the issue of the joint input dead zone affecting the precision and stability of the space robot, a novel adaptive law is proposed in conjunction with system error signal feedback to mitigate adverse effects. According to the Lyapunov stability theory, the stability of the closed-loop system is proven, with the trajectory tracking error converging to a small neighborhood around zero. Finally, numerical simulation results demonstrate the effectiveness of the control algorithm. © 2025 by the authors.

Keyword:

Adaptive control systems Closed loop control systems Control nonlinearities Control system stability Errors Learning algorithms Learning systems Navigation Robots Trajectories Uncertainty analysis

Community:

  • [ 1 ] [Ai, Haiping]School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang; 330013, China
  • [ 2 ] [Ai, Haiping]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou; 350108, China
  • [ 3 ] [Jiang, Lei]School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang; 330013, China
  • [ 4 ] [Zhu, An]School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang; 330013, China
  • [ 5 ] [Fu, Xiaodong]School of Aerospace Engineering, Tsinghua University, Beijing; 100084, China

Reprint 's Address:

Email:

Show more details

Related Keywords:

Related Article:

Source :

Aerospace

Year: 2025

Issue: 7

Volume: 12

2 . 1 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

Affiliated Colleges:

Online/Total:1485/13840128
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1