Detection of stiction in flow control loops based on fuzzy clustering

作者：Daneshwar M A^*; Noh Norlaili Mohd

来源：Control Engineering Practice, 2015, 39: 23-34.

DOI：10.1016/j.conengprac.2015.02.002

• Smart valves
• Stiction
• Fuzzy clustering
• Detection

In the presence of stiction, the control valves may present an oscillatory behaviour that affects the regulatory control performance, thereby causing a loss of product quality and increasing energy consumption. Detection of stiction in the early phase is a crucial key for process control to avoid major disruptions to the plant operations. In this paper, a novel technique based on a well-developed fuzzy clustering approach is proposed. Based on a dramatic change of the slope of the lines obtained from successive cluster centres in the presence of stiction, a new performance index to distinguish the cause of oscillation is proposed. The simulation, experimental and industrial results are provided.

• 出版日期2015-6