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Tuning of PID Controller for a Nonlinear Conical Tank


Affiliations
1 Department of Instrumentation and Control Engineering, Tamilnadu College of Engineering, Coimbatore, India
2 Department of Instrumentation and Control Engineering, Tamilnadu College of Engineering, Coimbatore, India
     

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This paper is about comparison between PID tuning method and PI predictive control in the conical tank process. The level control becomes quite typical due to the nonlinear shape of tank. Many process industries use conical tanks because of its shape contributes to better drainage of solid mixtures, slurries and viscous liquids. So control of conical tank presents a challenging problem due to its non-linearity and constantly changing cross-section. A conventional PID controller is used to control the conical tank system based upon tuning rules. From the knowledge of ultimate gain and ultimate frequency, we can obtain the tuning parameters by using ZN-Closed loop method.  Predictive PI control (PIP) has the advantage that it manages to predict the measurement signal even when the process has along dead time and when the measurement signal is noisy.


Keywords

Conical Tank, ZN Tuning Method, PID Control, PIP (Predictive PI Control), MATLAB/SIMULINK.
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  • Model based Controller Design for Conical Tank System D. AngelineVijula, M.E., Ph.D ,K. Vivetha, K. Gandhimathi, T. Praveena, International Journal of Computer Applications (0975 – 8887) Volume 85 – No 12, January 2014.

  • B. WayneBequette, (2003), “Process Control Modeling, Design, and Simulation” by Prentice-Hall, Inc.

  • Anna Joseph, J Samson Isaac, (2013),” Real Time Implementation of Model Reference Adaptive Controller for a Conical Tank”, International Journal on Theoretical and Applied Research in Mechanical Engineering, ISSN: 2319 – 3182, Volume-2, Issue-1

  • A Predictive PI Controller for Processes with Long Dead Times, ToreHagglund

  • Conical tank system, user manual, Version: 1.0, manufactured by minmax systems.


Abstract Views: 309

PDF Views: 3




  • Tuning of PID Controller for a Nonlinear Conical Tank

Abstract Views: 309  |  PDF Views: 3

Authors

G. Saravana Kumar
Department of Instrumentation and Control Engineering, Tamilnadu College of Engineering, Coimbatore, India
N. Sandhya
Department of Instrumentation and Control Engineering, Tamilnadu College of Engineering, Coimbatore, India
V. S. Krishna Priya
Department of Instrumentation and Control Engineering, Tamilnadu College of Engineering, Coimbatore, India

Abstract


This paper is about comparison between PID tuning method and PI predictive control in the conical tank process. The level control becomes quite typical due to the nonlinear shape of tank. Many process industries use conical tanks because of its shape contributes to better drainage of solid mixtures, slurries and viscous liquids. So control of conical tank presents a challenging problem due to its non-linearity and constantly changing cross-section. A conventional PID controller is used to control the conical tank system based upon tuning rules. From the knowledge of ultimate gain and ultimate frequency, we can obtain the tuning parameters by using ZN-Closed loop method.  Predictive PI control (PIP) has the advantage that it manages to predict the measurement signal even when the process has along dead time and when the measurement signal is noisy.


Keywords


Conical Tank, ZN Tuning Method, PID Control, PIP (Predictive PI Control), MATLAB/SIMULINK.

References





DOI: https://doi.org/10.36039/ciitaas%2F9%2F6%2F2017%2F154622.121-126