SCI和EI收录∣中国化工学会会刊

›› 2016, Vol. 24 ›› Issue (7): 886-890.DOI: 10.1016/j.cjche.2016.04.035

• Process Systems Engineering and Process Safety • 上一篇    下一篇

New parameter tuning method of washout filter-aided controller for dynamic behavior adjustment

Hao Jiang, Nan Zhang, Jinsong Zhao, Tong Qiu, Bingzhen Chen   

  1. Institute of Process Systems Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • 收稿日期:2015-06-18 修回日期:2015-12-11 出版日期:2016-07-28 发布日期:2016-08-17
  • 通讯作者: Bingzhen Chen
  • 基金资助:
    Supported by the National Basic Research Program of China (2012CB720500) and the National Natural Science Foundation of China (21306100).

New parameter tuning method of washout filter-aided controller for dynamic behavior adjustment

Hao Jiang, Nan Zhang, Jinsong Zhao, Tong Qiu, Bingzhen Chen   

  1. Institute of Process Systems Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2015-06-18 Revised:2015-12-11 Online:2016-07-28 Published:2016-08-17
  • Supported by:
    Supported by the National Basic Research Program of China (2012CB720500) and the National Natural Science Foundation of China (21306100).

摘要: Stabilizing unstable operating points is an effectiveway to enhance process benefits and safety, which motivates the development for a variety of advanced control strategies. The washout filter-aided controller (WFC), originally used for electric power system and aircraft, has been introduced to adjust the dynamic behavior of chemical process. However, the parameter tuning method faces two major limitations:the dimension of operating variables must be equal to or greater than that of state variables and only one positive real eigenvalue exists in the open loop system. To overcome the two limitations, this paper proposes a new parameter tuning method, so that theWFC is applicable in most chemical processes. By solving a constrained optimization problem, the controller parameters are determined under the constraint that the reassignment of the eigenvalues of the unstable desired operating point can satisfy the stability condition. Thus parts of the equilibrium manifold including the desired operating point are stabilized without affecting the shape of the equilibrium manifold. Finally, the effectiveness of the WFC improved by the proposed parameter tuning method is illustrated through a case study for propanediol anaerobic fermentation.

关键词: Tuning method, Washout filter-aided controller, Stability, Dynamic behavior adjustment

Abstract: Stabilizing unstable operating points is an effectiveway to enhance process benefits and safety, which motivates the development for a variety of advanced control strategies. The washout filter-aided controller (WFC), originally used for electric power system and aircraft, has been introduced to adjust the dynamic behavior of chemical process. However, the parameter tuning method faces two major limitations:the dimension of operating variables must be equal to or greater than that of state variables and only one positive real eigenvalue exists in the open loop system. To overcome the two limitations, this paper proposes a new parameter tuning method, so that theWFC is applicable in most chemical processes. By solving a constrained optimization problem, the controller parameters are determined under the constraint that the reassignment of the eigenvalues of the unstable desired operating point can satisfy the stability condition. Thus parts of the equilibrium manifold including the desired operating point are stabilized without affecting the shape of the equilibrium manifold. Finally, the effectiveness of the WFC improved by the proposed parameter tuning method is illustrated through a case study for propanediol anaerobic fermentation.

Key words: Tuning method, Washout filter-aided controller, Stability, Dynamic behavior adjustment