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Forward path model predictive control using a non-minimal state space form

Exadaktylos, V. and Taylor, C. James and Wang, Liuping and Young, Peter C. (2009) Forward path model predictive control using a non-minimal state space form. Proceedings of the Institution of Mechanical Engineers - Part I: Journal of Systems & Control Engineering, 223 (3). pp. 353-369. ISSN 0959-6518

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Abstract

This paper considers Model Predictive Control (MPC) using a Non-Minimal State Space (NMSS) form, in which the state vector consists only of the directly measured system variables. Two control structures emerge from the analysis, namely the conventional feedback form and an alternative forward path structure. There is a close analogy with Proportional-Integral-Plus (PIP) control system design, which is also based on the definition of a NMSS model with two control structures. However, the MPC/NMSS approach has the advantage of handling system constraints at the design stage. Also, since the NMSS model is obtained directly from the identified transfer function model, the covariance matrix for the parameter estimates can be used to evaluate the robustness of the predictive control system to model uncertainty using Monte-Carlo simulation. The effectiveness of the approach is demonstrated by means of simulation examples, including the IFAC'93 benchmark and the ALSTOM nonlinear gasifier problem. For the simulation examples considered here, the forward path form preserves the good performance properties of the original MPC/NMSS controller, whilst at the same time yielding improved robustness.

Item Type: Article
Journal or Publication Title: Proceedings of the Institution of Mechanical Engineers - Part I: Journal of Systems & Control Engineering
Uncontrolled Keywords: Model predictive control ; non-minimal state space ; constraints ; robustness
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 33439
Deposited By: Dr C. James Taylor (Engineering)
Deposited On: 18 May 2010 11:55
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:18
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/33439

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