Abstract
This paper presents a data-driven adaptive predictive control method using closed-loop subspace identification. As the predictor is the key element of the predictive controller, we propose to derive such predictor based on the subspace matrices which are obtained through the closed-loop subspace identification algorithm driven by input-output data. Taking advantage of transformational system model, the closed-loop data is effectively processed in this subspace algorithm. By combining the merits of receding window and recursive identification methods, an adaptive mechanism for online updating subspace matrices is given. Further, the data inspection strategy is introduced to eliminate the negative impact of the harmful (or useless) data on the system performance. The problems of online excitation data inaccuracy and closed-loop identification in adaptive control are well solved in the proposed method. Simulation results show the efficiency of this method. © 2014 Xiaosuo Luo and Yongduan Song.
| Original language | English |
|---|---|
| Article number | 869879 |
| Journal | Abstract and Applied Analysis |
| Volume | 2014 |
| Early online date | 1 Apr 2014 |
| DOIs | |
| Publication status | Published - 2014 |
| Externally published | Yes |
Bibliographical note
The authors would like to thank Dr. Xiaojie Su and the reviewers for their helpful comments.Funding
This work was supported in part by the Major State Basic Research Development Program 973 (no. 2012CB215202), the National Natural Science Foundation of China (no. 61134001), and Key Laboratory of Dependable Service Computing in Cyber Physical Society (Chongqing University), Ministry of Education.