Title: Design of an optimal tracking controller with unmeasured states for electro-hydraulic actuation system using 4/3 proportional DC valve

Authors: Ashok Kumar Kumawat; Raja Rout; Renu Kumawat; Manish Rawat

Addresses: Department of Mechatronics Engineering, Manipal University Jaipur, Rajasthan – 303007, India ' Department of Mechanical Engineering, Thapar Institute of Engineering and Technology, Punjab – 147004, India ' Department of Computer and Communication Engineering, Manipal University Jaipur, Rajasthan – 303007, India ' Department of Mechatronics Engineering, Manipal University Jaipur, Rajasthan – 303007, India

Abstract: In this paper, an optimal tracking control is designed considering the unknown states for an electro-hydraulic actuator system driven by a proportional directional control valve. Given the practicality of the algorithm, the control voltage applied to the proportional directional control valve satisfies the actuation limits. Furthermore, a discrete Kalman observer is used to overcome the limitation of unmeasured states. The efficacy of the proposed algorithm is verified in simulation as well as in experimental environments. Both simulation and experimental results confirm that the tracking performance of the electro-hydraulic actuator system is improved, and tracking error converges to an arbitrarily small neighbourhood.

Keywords: optimal tracking control; electro-hydraulic actuation system; Kalman state estimator; proportional directional control valve.

DOI: 10.1504/IJAAC.2023.131774

International Journal of Automation and Control, 2023 Vol.17 No.4, pp.418 - 439

Received: 02 May 2022
Accepted: 13 Nov 2022
Published online: 30 Jun 2023 *

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