Control Loop

Oscillations in process control loops present a common problem. This paper proposes a new algorithm to detect valve stiction for diagnosis of oscillation. Formalism for the qualitative description of input?output characteristics of a valve is also …

Valve stiction is the major cause of problems in process plant control loops. It often severely reduces controller performance and the development of a method to detect stiction is required to achieve efficient operations. In this paper, a method of …