ISSN 2096-4498

   CN 44-1745/U

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An Attitude Control Strategy for Shield Thrusting

  • REN Yingying ,
  • SUN Zhenchuan ,
  • CHU Changhai
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  • (State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, Henan, China)

Received date: 2019-01-31

  Revised date: 2019-02-21

  Online published: 2019-07-02

Abstract

In order to improve the control accuracy and control performance of attitude control system of shield during construction, a control strategy for shield boring attitude is proposed. In this strategy, the trajectory automatic tracking control method is combined with fuzzy adaptive PID closedloop control algorithm; and the speed control of each partition hydraulic cylinder is realized by multiple closedloop feedback of trajectory, displacement and pressure, so as to ensure the shield is boring along the design axis of tunnel. Meanwhile, the thrust system of electrohydraulic control experimental platform is used to verify the effectiveness of the abovementioned strategy. The results show that the proposed control strategy can guarantee the displacement deviation within 5 mm, which can meet the construction requirements.

Cite this article

REN Yingying , SUN Zhenchuan , CHU Changhai . An Attitude Control Strategy for Shield Thrusting[J]. Tunnel Construction, 2019 , 39(6) : 1038 -1044 . DOI: 10.3973/j.issn.2096-4498.2019.06.018

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