Parameter identification of a jet pipe electro-pneumatic servo actuator

Authors

  • Shawki Al-Saloum Department of Electronic and Mechanical Systems, Higher Institute for Applied Sciences and Technology (HIAST), Damascus, Syria
  • Ali Taha Department of Electronic and Mechanical Systems, Higher Institute for Applied Sciences and Technology (HIAST), Damascus, Syria http://orcid.org/0000-0002-7935-6557
  • Ibrahim Chouaib Department of Electronic and Mechanical Systems, Higher Institute for Applied Sciences and Technology (HIAST), Damascus, Syria

DOI:

https://doi.org/10.1080/14399776.2016.1224415

Keywords:

Pneumatic cylinder, jet pipe servo valve, mass flow rate, static friction model

Abstract

This paper presents experimental parameter identification of a jet pipe electro-pneumatic servo actuator model, which represents a class of high performance fast actuation systems. Parameter identification is given including detailed representation of linear dynamics, hysteresis, and the mass flow rate characteristics of the jet pipe servo valve, besides the static friction model of the linear pneumatic cylinder. Model parameters are identified and the model formulation is validated through simulation and experimentation. The main contribution of this work is threefold. Firstly, the mass flow rate characteristics are identified using the pressure dynamic equation in one cylinder chamber without the use of a flow sensor. Secondly, a lag behaviour related to the non-modelled dynamics is found out by performing an experimental identification of the frequency response of the servo valve. Thirdly, a new experimental setup is presented to give the static friction model as a function of not only the relative velocity but also the pressures in the two cylinder chambers. The agreement between simulations and experimental data indicates that the Parameter identification methods presented are valid and constitute valuable tools, whether in the analysis and the design of actuation systems, or for use in model-based control. The modelling methodology used in this paper can be generalised to similar electropneumatic servo actuators.

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Author Biographies

Shawki Al-Saloum, Department of Electronic and Mechanical Systems, Higher Institute for Applied Sciences and Technology (HIAST), Damascus, Syria

Shawki Al-Saloum was born in Homs, Syria, in 1974. He received the BS degree in mechanical engineering from HIAST (Higher Institute for Applied sciences and Technologies), Damascus, Syria, in 1998 and the MS degree in control engineering, in 2010. He is currently pursuing the PhD degree in control engineering in HIAST.

Ali Taha, Department of Electronic and Mechanical Systems, Higher Institute for Applied Sciences and Technology (HIAST), Damascus, Syria

Ali Taha was born in Damascus, Syria, in 1967. He received the BS degree in mechanical engineering from Damascus University, Damascus, Syria, in 1990, and received the MS degree in electro-hydraulic systems from Hua Zong University of technology, Wuhan, China, in 2000, and the PhD degree in control of electro-hydraulic systems from Bauman University of technology, Moscow, Russia in 2007. From 2007 till now, he is a Researcher in HIAST.

Ibrahim Chouaib, Department of Electronic and Mechanical Systems, Higher Institute for Applied Sciences and Technology (HIAST), Damascus, Syria

Ibrahim Chouaib was born in Damascus, Syria, in 1966. He received the BS degree in aeronautic engineering from ENSICA (Ecole National Superieure d’Ingenieurs du Construction Aéronautiques), Toulouse, France and received the DEA (Diplôme d’etude Approfondi) and the PhD degree in automatic control from INSA (Institute National de Science Appliqués), Toulouse, France, in 1994. From 1995 to 2011, he was a Researcher in HIAST, Damascus, Syria. From 2001 till 2011, he was a principle Researcher in HIAST. From 2011 till now, he is a senior Researcher in HIAST.

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Published

2017-03-01

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