Parallel feedforward design using LMI for unknown disturbance estimation of non-minimum phase system

Author

Tanemura, Masaya ; Chida, Yuji ; Kobayashi, Hideo ; Hirata, Masayuki

Author_Institution

Grad. Sch. of Sci. & Technol., Shinshu Univ., Shinshu, Japan

fYear

2014

fDate

9-12 Sept. 2014

Firstpage

1998

Lastpage

2003

Abstract

An unknown disturbance estimation method for non-minimum phase systems using a parallel feedforward model has been proposed. The parallel feedforward model is adopted in order to improve the estimation performance and it must ensure minimum phase property of the augmented system consisting of the plant and the parallel feedforward model. In addition, the frequency response of the parallel feedforward model must match to that of the plant. This paper derives design conditions of the parallel feedforward model as LMI conditions and designs the parallel feedforward model by solving a convex optimization problem.

Keywords

convex programming; feedforward; frequency response; linear matrix inequalities; observers; LMI conditions; augmented system; convex optimization problem; disturbance observer; estimation performance; frequency response; minimum phase property; nonminimum phase systems; parallel feedforward design; unknown disturbance estimation; Educational institutions; Feedforward neural networks; Frequency estimation; Frequency response; Observers; Polynomials; KYP lemma; LMI; Parallel feedforward model; Unknown disturbance observer;

fLanguage

English

Publisher

ieee

Conference_Titel

SICE Annual Conference (SICE), 2014 Proceedings of the

Conference_Location

Sapporo

Type

conf

DOI

10.1109/SICE.2014.6935313

Filename

6935313