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An online tuned novel nonlinear PI controller for stiction compensation in pneumatic control valves.
ISA Trans 2015; 58:434-45IT

Abstract

A novel Nonlinear PI Controller (NPIC) has been proposed for effective control of flow process employing a sticky pneumatic control valve. The proposed control scheme has been inherited from a classical PI control structure with a difference that the integral gain has been varied in accordance with the instantaneous error and the rate of change of error. The tuning of controller has been carried out online using Differential Evolution algorithm. To evaluate the effectiveness of the proposed controller, a comparative study with the conventional PI controller has also been carried out for the setpoint tracking, disturbance rejection and robustness to parameter uncertainties on account of operating point change on a laboratory scale nonlinear flow process. Based on these intensive experimental evidences, it has been concluded that the NPIC performed far better than the conventional PI controller for all the case studies and suppressed effectively any stiction induced oscillations.

Authors+Show Affiliations

Division of Instrumentation and Control Engineering, Netaji Subhas Institute of Technology, New Delhi 110078, India. Electronic address: puneet.mishra@ymail.com.Division of Instrumentation and Control Engineering, Netaji Subhas Institute of Technology, New Delhi 110078, India. Electronic address: vineetkumar27@gmail.com.Division of Instrumentation and Control Engineering, Netaji Subhas Institute of Technology, New Delhi 110078, India. Electronic address: kpsrana1@gmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26051964

Citation

Mishra, Puneet, et al. "An Online Tuned Novel Nonlinear PI Controller for Stiction Compensation in Pneumatic Control Valves." ISA Transactions, vol. 58, 2015, pp. 434-45.
Mishra P, Kumar V, Rana KP. An online tuned novel nonlinear PI controller for stiction compensation in pneumatic control valves. ISA Trans. 2015;58:434-45.
Mishra, P., Kumar, V., & Rana, K. P. (2015). An online tuned novel nonlinear PI controller for stiction compensation in pneumatic control valves. ISA Transactions, 58, pp. 434-45. doi:10.1016/j.isatra.2015.05.005.
Mishra P, Kumar V, Rana KP. An Online Tuned Novel Nonlinear PI Controller for Stiction Compensation in Pneumatic Control Valves. ISA Trans. 2015;58:434-45. PubMed PMID: 26051964.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - An online tuned novel nonlinear PI controller for stiction compensation in pneumatic control valves. AU - Mishra,Puneet, AU - Kumar,Vineet, AU - Rana,K P S, Y1 - 2015/06/04/ PY - 2014/12/29/received PY - 2015/04/17/revised PY - 2015/05/11/accepted PY - 2015/6/9/entrez PY - 2015/6/9/pubmed PY - 2015/6/9/medline KW - Deadband KW - Flow control KW - Limit cycles KW - Nonlinear PI controller KW - Pneumatic control valve KW - Stiction SP - 434 EP - 45 JF - ISA transactions JO - ISA Trans VL - 58 N2 - A novel Nonlinear PI Controller (NPIC) has been proposed for effective control of flow process employing a sticky pneumatic control valve. The proposed control scheme has been inherited from a classical PI control structure with a difference that the integral gain has been varied in accordance with the instantaneous error and the rate of change of error. The tuning of controller has been carried out online using Differential Evolution algorithm. To evaluate the effectiveness of the proposed controller, a comparative study with the conventional PI controller has also been carried out for the setpoint tracking, disturbance rejection and robustness to parameter uncertainties on account of operating point change on a laboratory scale nonlinear flow process. Based on these intensive experimental evidences, it has been concluded that the NPIC performed far better than the conventional PI controller for all the case studies and suppressed effectively any stiction induced oscillations. SN - 1879-2022 UR - https://www.unboundmedicine.com/medline/citation/26051964/An_online_tuned_novel_nonlinear_PI_controller_for_stiction_compensation_in_pneumatic_control_valves L2 - https://linkinghub.elsevier.com/retrieve/pii/S0019-0578(15)00122-6 DB - PRIME DP - Unbound Medicine ER -