This paper reports a complete formulation of a model predictive control strategy having guaranteed nominal asymptotic stability. The formulation includes a successive linearisation procedure to obtain a linear model from a non-linear plant model. It gives a complete state-space derivation including long-range prediction, trajectory tracking and modelling of both measured feedforward disturbances and unmeasured stochastic disturbances. Using the dual mode controller concept, the formulation applies a terminal constraint at the end of finite horizon prediction so that outputs reach their steady values asymptotically. The control strategy has been applied in a simulation of a thermal power plant, which is a complex multivariable system based on a non-linear physical model. Although the theoretical results are not entirely new, a complete stable MPC formulation along with its application in a realistic large-scale system is not readily available in MPC literature. A set of simulation results demonstrates the effectiveness of the formulated strategy and compares its performance with finite horizon MPC.
|Title of host publication||Unknown Host Publication|
|Publisher||European Control Conference|
|Number of pages||6|
|Publication status||Published - Sep 2001|
|Event||European Control Conference (ECC 01) - Porto, Portugal|
Duration: 1 Sep 2001 → …
|Conference||European Control Conference (ECC 01)|
|Period||1/09/01 → …|
Prasad, G., Irwin, GW., Swidenbank, E., & Hogg, BW. (2001). A Complete Formulation of Non-Linear Model-Based Stable Predictive Control Strategy. In Unknown Host Publication (pp. 3458-3463). European Control Conference.