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JACIII Vol.20 No.5 pp. 828-835
doi: 10.20965/jaciii.2016.p0828
(2016)

Paper:

Network Teleoperation Robot System Control Based on Fuzzy Sliding Mode

Zhongda Tian*, Xianwen Gao**, and Peiqin Guo**

*College of Information Science and Engineering, Shenyang University of Technology
Shenyang 110870, China
**College of Information Science and Engineering, Northeastern University
Shenyang 110819, China

Received:
March 9, 2016
Accepted:
July 28, 2016
Online released:
September 20, 2016
Published:
September 20, 2016
Keywords:
teleoperation, robot, delay, sliding mode, fuzzy control
Abstract

A teleoperation robot system is connected through a network. However, stochastic delay in such a network can affect its performance, or even make the system unstable. To solve this problem, this paper proposes a teleoperation robot system control method based on fuzzy sliding mode. In the proposed method, a delay generator generates variable delay conforming to a shift gamma distribution designed to simulate actual network delay. In addition, a proposed fuzzy sliding mode controller based on switching gain adjustment is used to rectify the chattering phenomenon in the sliding mode controller of the teleoperation robot system. In the controller, the master hand uses impedance control and realizes feedback from the slave hand. Controller simulation comparison results show that the proposed fuzzy sliding mode controller effectively eliminates the sliding mode control chattering phenomenon as the slave hand stabilizes the tracking velocity of the master hand. Consequently, the system exhibits improved dynamic performance.

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Last updated on Mar. 22, 2017