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Author:

Yan, Wang (Yan, Wang.) | Jing, Zhao (Jing, Zhao.) (Scholars:赵京) | Yuqing, Chen (Yuqing, Chen.)

Indexed by:

EI Scopus

Abstract:

This study proposes a novel model-free robot manipulator joint position and velocity tracking controller with a simple structure for controlling a robotic manipulator with human-like reaching motion according to human movement characteristics. The proposed design guarantees the responses of the tracking error within preset bounds using velocity feedback. A structurally and computationally natural logarithmic controller is designed to achieve joint position and velocity tracking of a desired trajectory of a reaching motion profile with prescribed performance (PP) bounds. Simulations of a three-degree-of-freedom spatial manipulator with the PP controller confirm the conclusions even in case of typical input disturbances. Results show that the PP controller outperforms the traditional position and derivative (PD) trajectory tracking controller without requiring excessive control effort. The proposed controller that uses sole velocity feedback achieves the control objective with bell-shaped joint velocity profiles and joint consistency. Thus, the proposed controller outperforms the traditional PD trajectory tracking controller that uses position and velocity feedback with comparable control effort. The experiment with a KUKA robot manipulator demonstrates that the control algorithm of sole velocity feedback can be used to achieve smooth reaching movements within a short travelling time of less than 1 s. The movements are characterised by bell-shaped joint velocity profiles and joint position consistency similar to human movements. © 2019, International Association of Engineers. All rights reserved.

Keyword:

Flexible manipulators Feedback Trajectories Degrees of freedom (mechanics) Velocity Modular robots Controllers Motion control Industrial robots Robot applications Motion tracking

Author Community:

  • [ 1 ] [Yan, Wang]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Jing, Zhao]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Yuqing, Chen]School of Electronic and Communication Engineering, Guiyang University, Guiyang; 550005, China

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Source :

Engineering Letters

ISSN: 1816-093X

Year: 2019

Issue: 4

Volume: 27

Page: 763-775

ESI Discipline: ENGINEERING;

ESI HC Threshold:136

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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