Mathematical modeling and DLQR based controller design for a non-minimum phase Electro Hydraulic Servo system (EHS)

Ahmed, Mazid Ishtique; Azad, Akm M.M.Abdul Malek

Date

2017-02-08

Publisher

Citation

Ahmed, M. I., & Azad, A. K. M. (2017). Mathematical modeling and DLQR based controller design for a non-minimum phase electro hydraulic servo system (EHS). Paper presented at the IEEE Region 10 Annual International Conference, Proceedings/TENCON, 1839-1844. doi:10.1109/TENCON.2016.7848339

Abstract

In this paper, an Electro-Hydraulic Servo system is presented which bears the characteristics of basic Non-minimum phase (NMP) systems. Controlling problems encountered in NMP systems and optimizing the system response with optimal control strategy is the prime objective of this study. The described EHS system is mathematically modeled to obtain the discrete-time transfer function for analyzing its characteristics of Non-minimum phase system and illustrated by computer simulation using MATLAB ©. Discrete Linear Quadratic Regulator (DLQR) is presented as the controller for optimal controlling of the NMP behavior of EHS system. Response of the system is studied with and without the application of the DLQR. The comparative study illustrates an improvement in system behavior which can be used for obtaining perfect tracking and position tracking control of such systems.

Keywords

DLQR; EHS; NMP

Description

This conference paper was published in the IEEE Region 10 Conference, TENCON 2016; Marina Bay SandsSingapore; Singapore; 22 November 2016 through 25 November 2016 [© 2016 IEEE] and the definite version is available at : http://doi.org/10.1109/TENCON.2016.7848339 The Journal's website is at: https://ieeexplore.ieee.org/document/7848339/

Publisher Link

https://ieeexplore.ieee.org/document/7848339/

DOI

http://doi.org/10.1109/TENCON.2016.7848339

Department

Department of Electrical and Electronic Engineering, BRAC University

Collections

Conference Paper [16]
Faculty Publications [16]