MPC-Based Offset-Free Tracking Control for Intermittent Transonic Wind Tunnel

Ding, Baocang; Wang, Jun; Tang, Xiaoming

doi:10.1109/access.2020.2977047

Cited by 4 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tube-based MPC has better steady-state performance but a worse transient performance than the DOBMPC, and they have almost the same computational complexities. It is possible to achieve offset-free tracking in the case of constant or known dynamic disturbance [18][19][20][21][22][23][24]. In [24] an economic robust tube-based MPC for offset-free tracking of discrete-time linear systems was presented.…”

Section: Introductionmentioning

confidence: 99%

Robust MPC for tracking changing setpoints in discrete‐time non‐linear systems with non‐additive unknown disturbance

Zamani

Bolandi

2022

IET Control Theory & Appl

View full text Add to dashboard Cite

This paper develops a novel observer-based robust tracking predictive controller for discrete-time nonlinear affine systems capable of dealing with changing setpoints and nonadditive non-slowly varying unknown disturbance with bounded variations. The existence of disturbance and/or sudden changes in a setpoint may lead to feasibility and stability issues in the stabilizing terminal constraint-based MPC. Since robust tracking MPCs usually consider additive disturbance, the recursive feasibility of these methods may be lost in the presence of non-additive non-slowly varying disturbance. The robust tracking MPC presented here extends the artificial reference-based MPC to deal with both changing setpoints and non-additive non-slowly varying disturbance. The key idea is the addition of tightened input and state constraints as new system constraints. The authors also guarantee the boundedness of disturbance observation error and closed-loop tracking error. In this method, the optimal tracking error converges asymptotically to the terminal region, and the perturbed system tracking error remains in a variable size tube around the optimal tracking error. It is shown that the proposed controller can achieve offset-free tracking in the presence of constant disturbance. The simulation results of the satellite attitude control system are provided to demonstrate the efficiency of the proposed predictive controller.

show abstract