journal6 ›› 2013, Vol. 34 ›› Issue (4): 46-49.DOI: DOI:10.3969/j.issn.1007-2985.2013.03.010

• 物理与电气工程 • 上一篇    下一篇

一种新型非线性PI控制器的设计及其仿真

  

  1. (吉首大学信息科学与工程学院,湖南 吉首 416000)
  • 出版日期:2013-07-25 发布日期:2013-07-18
  • 作者简介:廖柏林(1981-),男,湖南衡阳人,吉首大学信息科学与工程学院讲师,博士生,主要从事过程控制、机械臂控制和神经网络等研究.
  • 基金资助:

    国家自然科学基金资助项目(61102089)

Research and Simulation of a New Nonlinear PI Controller

  1. (College of Information Science and Engineering,Jishou University,Jishou 416000,Hunan China)
  • Online:2013-07-25 Published:2013-07-18

摘要:针对过程控制普遍存在的大时滞、大惯性对象,设计并仿真了一种新型非线性PI控制器.该控制器的前置非周期采样单元补偿被控对象的时滞特性,非线性PI控制环节加快调节过程并减少超调量,MATLAB的S-Function实现了非周期采样和非线性环节的仿真.仿真结果表明,该新型非线性PI控制器具有较小的超调量、较短的过渡时间,在模型失配的情况下仍具有良好的控制性和鲁棒性.

关键词: 非周期采样, 非线性, PI控制器, 仿真

Abstract: For the problem of large time-delay and great inertia in the process control field,a new nonlinear PI controller is proposed which can compensate the time-delay features by an aperiodic sampling unit,speed up the adjustment process and reduce the overshoot by a nonlinear PI controller.The simulation of the aperiodic sampling unit and nonlinear unit is realized by the S-Function of MATLAB.Simulation results demonstrate that the new nonlinear PI controller has less overshoot and faster response.In the case of the model-process mismatch,it also has a good performance and robust stability.

Key words: aperiodic sampling, nonlinear, PI controller, simulation

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