A new solution for the robust control problem of non-minimum phase systems using disturbance observer

Emre Sariyildiz, Kouhei Ohnishi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

Plants, which have Right Half Plane (RHP) zero(s), are called as non-minimum phase systems due to their specific phase response characteristics. They have several constraints, such as bandwidth limitation, achievable sensitivity reduction etc., in the design of feedback control systems. Furthermore, the conventional Disturbance Observer (DOB) cannot be directly applied to the non-minimum phase systems due to internal stability problem. This paper proposes a new solution for the robust control problem of non-minimum phase systems by using the DOB. A non-casual, minimum phase transfer function is proposed to remove the internal stability problem in the design of DOB. The Poisson integral formula is used so that the bandwidth constraints of DOB, which occurs due to nonminimum phase characteristic, are analytically derived. The proposed method is applied to a general second order plant model with a RHP zero and system uncertainties. Simulation results are given to show the validity of proposed method.

Original languageEnglish
Title of host publication2013 IEEE International Conference on Mechatronics, ICM 2013
Pages46-51
Number of pages6
DOIs
Publication statusPublished - 2013
Event2013 IEEE International Conference on Mechatronics, ICM 2013 - Vicenza, Italy
Duration: 2013 Feb 272013 Mar 1

Other

Other2013 IEEE International Conference on Mechatronics, ICM 2013
CountryItaly
CityVicenza
Period13/2/2713/3/1

Fingerprint

Robust control
Bandwidth
Feedback control
Transfer functions
Control systems
Uncertainty

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Sariyildiz, E., & Ohnishi, K. (2013). A new solution for the robust control problem of non-minimum phase systems using disturbance observer. In 2013 IEEE International Conference on Mechatronics, ICM 2013 (pp. 46-51). [6518509] https://doi.org/10.1109/ICMECH.2013.6518509

A new solution for the robust control problem of non-minimum phase systems using disturbance observer. / Sariyildiz, Emre; Ohnishi, Kouhei.

2013 IEEE International Conference on Mechatronics, ICM 2013. 2013. p. 46-51 6518509.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sariyildiz, E & Ohnishi, K 2013, A new solution for the robust control problem of non-minimum phase systems using disturbance observer. in 2013 IEEE International Conference on Mechatronics, ICM 2013., 6518509, pp. 46-51, 2013 IEEE International Conference on Mechatronics, ICM 2013, Vicenza, Italy, 13/2/27. https://doi.org/10.1109/ICMECH.2013.6518509
Sariyildiz E, Ohnishi K. A new solution for the robust control problem of non-minimum phase systems using disturbance observer. In 2013 IEEE International Conference on Mechatronics, ICM 2013. 2013. p. 46-51. 6518509 https://doi.org/10.1109/ICMECH.2013.6518509
Sariyildiz, Emre ; Ohnishi, Kouhei. / A new solution for the robust control problem of non-minimum phase systems using disturbance observer. 2013 IEEE International Conference on Mechatronics, ICM 2013. 2013. pp. 46-51
@inproceedings{39ff32b46d0048b387e768b7d0d425bf,
title = "A new solution for the robust control problem of non-minimum phase systems using disturbance observer",
abstract = "Plants, which have Right Half Plane (RHP) zero(s), are called as non-minimum phase systems due to their specific phase response characteristics. They have several constraints, such as bandwidth limitation, achievable sensitivity reduction etc., in the design of feedback control systems. Furthermore, the conventional Disturbance Observer (DOB) cannot be directly applied to the non-minimum phase systems due to internal stability problem. This paper proposes a new solution for the robust control problem of non-minimum phase systems by using the DOB. A non-casual, minimum phase transfer function is proposed to remove the internal stability problem in the design of DOB. The Poisson integral formula is used so that the bandwidth constraints of DOB, which occurs due to nonminimum phase characteristic, are analytically derived. The proposed method is applied to a general second order plant model with a RHP zero and system uncertainties. Simulation results are given to show the validity of proposed method.",
author = "Emre Sariyildiz and Kouhei Ohnishi",
year = "2013",
doi = "10.1109/ICMECH.2013.6518509",
language = "English",
isbn = "9781467313889",
pages = "46--51",
booktitle = "2013 IEEE International Conference on Mechatronics, ICM 2013",

}

TY - GEN

T1 - A new solution for the robust control problem of non-minimum phase systems using disturbance observer

AU - Sariyildiz, Emre

AU - Ohnishi, Kouhei

PY - 2013

Y1 - 2013

N2 - Plants, which have Right Half Plane (RHP) zero(s), are called as non-minimum phase systems due to their specific phase response characteristics. They have several constraints, such as bandwidth limitation, achievable sensitivity reduction etc., in the design of feedback control systems. Furthermore, the conventional Disturbance Observer (DOB) cannot be directly applied to the non-minimum phase systems due to internal stability problem. This paper proposes a new solution for the robust control problem of non-minimum phase systems by using the DOB. A non-casual, minimum phase transfer function is proposed to remove the internal stability problem in the design of DOB. The Poisson integral formula is used so that the bandwidth constraints of DOB, which occurs due to nonminimum phase characteristic, are analytically derived. The proposed method is applied to a general second order plant model with a RHP zero and system uncertainties. Simulation results are given to show the validity of proposed method.

AB - Plants, which have Right Half Plane (RHP) zero(s), are called as non-minimum phase systems due to their specific phase response characteristics. They have several constraints, such as bandwidth limitation, achievable sensitivity reduction etc., in the design of feedback control systems. Furthermore, the conventional Disturbance Observer (DOB) cannot be directly applied to the non-minimum phase systems due to internal stability problem. This paper proposes a new solution for the robust control problem of non-minimum phase systems by using the DOB. A non-casual, minimum phase transfer function is proposed to remove the internal stability problem in the design of DOB. The Poisson integral formula is used so that the bandwidth constraints of DOB, which occurs due to nonminimum phase characteristic, are analytically derived. The proposed method is applied to a general second order plant model with a RHP zero and system uncertainties. Simulation results are given to show the validity of proposed method.

UR - http://www.scopus.com/inward/record.url?scp=84879403682&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879403682&partnerID=8YFLogxK

U2 - 10.1109/ICMECH.2013.6518509

DO - 10.1109/ICMECH.2013.6518509

M3 - Conference contribution

SN - 9781467313889

SP - 46

EP - 51

BT - 2013 IEEE International Conference on Mechatronics, ICM 2013

ER -