Object structure

Creator:

Ławryńczuk, Maciej

Contributor:

Iacono, Mauro - ed. ; Kołodziej, Joanna - ed.

Title:

Nonlinear state-space predictive control with on-line linearisation and state estimation

Subtitle:

.

Group publication title:

AMCS, Volume 25 (2015)

Subject and Keywords:

process control ; model predictive control ; nonlinear state-space models ; extended Kalman filter ; on-line linearization

Abstract:

This paper describes computationally efficient model predictive control (MPC) algorithms for nonlinear dynamic systems represented by discrete-time state-space models. Two approaches are detailed: in the first one the model is successively linearised on-line and used for prediction, while in the second one a linear approximation of the future process trajectory is directly found on-line. ; In both the cases, as a result of linearisation, the future control policy is calculated by means of quadratic optimisation. For state estimation, the extended Kalman filter is used. The discussed MPC algorithms, although disturbance state observers are not used, are able to compensate for deterministic constant-type external and internal disturbances. ; In order to illustrate implementation steps and compare the efficiency of the algorithms, a polymerisation reactor benchmark system is considered. In particular, the described MPC algorithms with on-line linearisation are compared with a truly nonlinear MPC approach with nonlinear optimisation repeated at each sampling instant.

Publisher:

Zielona Góra: Uniwersytet Zielonogórski

Resource Type:

artykuł

DOI:

10.1515/amcs-2015-0060

Pages:

833-847

Source:

AMCS, volume 25, number 4 (2015) ; click here to follow the link

Language:

eng

Rights:

Biblioteka Uniwersytetu Zielonogórskiego