• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

计算机工程与科学

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基于模糊PID控制的液压同步提升系统仿真分析

石云飞,章青,吕喆   

  1. (天津大学机械工程学院,天津 300072)
  • 收稿日期:2015-09-14 修回日期:2015-11-04 出版日期:2016-11-25 发布日期:2016-11-25

Simulation analysis of hydraulic synchronous
lifting  system based on fuzzy PID control

SHI Yunfei,ZHANG Qing,L Zhe   

  1. (College of Mechanical Engineering,Tianjin University,Tianjin 300072,China)
  • Received:2015-09-14 Revised:2015-11-04 Online:2016-11-25 Published:2016-11-25

摘要:

在LNG储罐穹顶液压整体提升技术中,不仅要保证各个提升吊点的位移精度和负载均衡控制,又要保证系
统在提升过程中的平稳性。常规PID控制方式能够实现提升系统的同步控制,但由于控制参数不能根据负
载的改变进行实时调整,导致液压整体提升系统在提升过程中会因速度波动而产生提升不平稳性。模糊
自适应PID控制器可以实现控制参数的实时改变。运用AMESim和Matlab软件对液压整体提升系统的模糊控
制模型进行联合仿真。仿真结果表明,模糊自适应PID控制在实现位移同步控制和负载均衡控制的前提下
,能有效改善提升过程的不平稳性。

关键词: 液压提升, 模糊控制, 模型, 仿真

Abstract:

Regarding the hydraulic lifting installation technology of the LNG tank dome mounting,it is
very necessary to ensure the displacement accuracy and load balance of the lifting points
and the stability of the system in the lifting process.Conventional PID control methods can
realize the synchronous control of the lifting system,but they cannot adjust control
parameters according to load changes in real time,which can cause instability during the
lifting process due to speed fluctuation.Since the fuzzy adaptive PID control mechanism can
change the control parameters in real time,we utilize the fuzzy control model of AMESim and
Simulink in Matlab to simulate the control system.Simulation results show that the fuzzy
adaptive PID control mechanism is effective in improving the stability of the lifting
process while achieving the synchronous control of displacement and load balance.

Key words: hydraulic lift, fuzzy control, model, simulation