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Actuator stiction compensation via variable amplitude pulses.
ISA Trans 2018; 73:239-248IT

Abstract

A novel model free stiction compensation scheme is developed which eliminates the oscillations and also reduces valve movement, allowing good setpoint tracking and disturbance rejection. Pulses with varying amplitude are added to the controller output to overcome stiction and when the error becomes smaller than a specified limit, the compensation ceases and remains in a standby mode. The compensation re-starts as soon as the error exceeds the user specified threshold. The ability to cope with uncertainty in friction is a feature achieved by the use of pulses of varying amplitude. The algorithm has been evaluated via simulation and by application on an industrial DCS system interfaced to a pilot scale process with features identical to those found in industry including a valve positioner.

Authors+Show Affiliations

Department of Chemical and Materials Engineering, University of Alberta, Edmonton, T6G 2V4, Canada. Electronic address: arifin@ualberta.ca.Departamento de Engenharia Elétrica, UFES, Av Fernando Ferrari, 514, CEP 29075-910, Vitória, ES, Brazil. Electronic address: munaro@ele.ufes.br.Departamento de Engenharia Elétrica, UFES, Av Fernando Ferrari, 514, CEP 29075-910, Vitória, ES, Brazil.Departamento de Engenharia Elétrica, UFES, Av Fernando Ferrari, 514, CEP 29075-910, Vitória, ES, Brazil. Electronic address: marcos.cypriano@aluno.ufes.br.Department of Chemical and Materials Engineering, University of Alberta, Edmonton, T6G 2V4, Canada. Electronic address: slshah@ualberta.ca.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29336789

Citation

Arifin, B M S., et al. "Actuator Stiction Compensation Via Variable Amplitude Pulses." ISA Transactions, vol. 73, 2018, pp. 239-248.
Arifin BMS, Munaro CJ, Angarita OFB, et al. Actuator stiction compensation via variable amplitude pulses. ISA Trans. 2018;73:239-248.
Arifin, B. M. S., Munaro, C. J., Angarita, O. F. B., Cypriano, M. V. G., & Shah, S. L. (2018). Actuator stiction compensation via variable amplitude pulses. ISA Transactions, 73, pp. 239-248. doi:10.1016/j.isatra.2018.01.010.
Arifin BMS, et al. Actuator Stiction Compensation Via Variable Amplitude Pulses. ISA Trans. 2018;73:239-248. PubMed PMID: 29336789.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Actuator stiction compensation via variable amplitude pulses. AU - Arifin,B M S, AU - Munaro,C J, AU - Angarita,O F B, AU - Cypriano,M V G, AU - Shah,S L, Y1 - 2018/01/11/ PY - 2017/05/20/received PY - 2017/12/18/revised PY - 2018/01/01/accepted PY - 2018/1/18/pubmed PY - 2018/1/18/medline PY - 2018/1/17/entrez KW - Control valves KW - Friction compensation KW - Process control KW - Valve positioner KW - Valve stiction SP - 239 EP - 248 JF - ISA transactions JO - ISA Trans VL - 73 N2 - A novel model free stiction compensation scheme is developed which eliminates the oscillations and also reduces valve movement, allowing good setpoint tracking and disturbance rejection. Pulses with varying amplitude are added to the controller output to overcome stiction and when the error becomes smaller than a specified limit, the compensation ceases and remains in a standby mode. The compensation re-starts as soon as the error exceeds the user specified threshold. The ability to cope with uncertainty in friction is a feature achieved by the use of pulses of varying amplitude. The algorithm has been evaluated via simulation and by application on an industrial DCS system interfaced to a pilot scale process with features identical to those found in industry including a valve positioner. SN - 1879-2022 UR - https://www.unboundmedicine.com/medline/citation/29336789/Actuator_stiction_compensation_via_variable_amplitude_pulses_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0019-0578(18)30010-7 DB - PRIME DP - Unbound Medicine ER -