Journal of Applied Sciences ›› 2019, Vol. 37 ›› Issue (4): 565-572.doi: 10.3969/j.issn.0255-8297.2019.04.013

• Control and System • Previous Articles    

Design of Fuzzy-PID Control Virtual Instrument for 3-RRR Planar Parallel Mechanism

LIU Xia1, SHAN Ning2, WANG Qing1, WU Xinwei1   

  1. 1. College of Electromechanical Engineering, Xi'an Polytechnic University, Xi'an 710048, China;
    2. College of Equipment Management and Support, Engineering University of CAPF, Xi'an 710086, China
  • Received:2018-12-19 Revised:2019-01-14 Online:2019-07-31 Published:2019-10-11

Abstract: The application of 3-RRR planar parallel mechanism in engineering field is seriously restricted by the motion precision problem. In order to enhance mechanism motion precision in effect, a fuzzy-PID control system of 3-RRR planar parallel mechanism is established. The experimental control device is set up. And the virtual instrument software of fuzzy-PID real time control system is developed based on LabVIEW. And real time control of mechanism's motion error is studied experimentally. Experimental results show that the motion error of the system can be controlled in real time. It features in arithmetic simplicity and high precision. The developed virtual instrument software not only has a friendly and easy operation interface, but also has high flexibility, scalability, and intelligence.

Key words: planar parallel mechanism, 3-RRR mechanism, fuzzy-PID control, movement precision, virtual instrument

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