Data-driven control for multi-rate multi-input/single-output systems

• Published in: ISA transactions Vol. 126; pp. 254 - 262
• Main Authors: Sato, T., Sakai, Y., Kawaguchi, N., Inoue, A.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-07-2022
• Subjects: Adaptive control; Data-driven; Multi-input; Non-uniform; Sampled-data control; Sampled-data control; Multi-input; Data-driven; Non-uniform; Adaptive control
• ISSN: 0019-0578; 1879-2022
• DOI: 10.1016/j.isatra.2021.07.035

For the next generation of manufacturing, represented by Industrie 4.0, a multi-input controller is designed directly from controlled data, without using the mathematical plant model, where the ratio between the D/A conversion of multiple inputs and the A/D conversion of a single output is non-uniquely. With the proposed method, the fixed-structured controller is optimally designed by solving a model reference problem using one-shot data. Furthermore, to eliminate inter-sample ripples emerged by input oscillation, the deviation of the control inputs is also evaluated using the proposed method. As a result, a non-ripple data-driven controller is achieved. Numerical examples show that the proposed multi-rate data-driven method is superior than the conventional single-rate method.
•A multi-rate control system is designed directly from controlled data, without using the mathematical plant model.•The ratio between the D/A conversion of multiple inputs and the A/D conversion of a single output is non-uniquely.•The control inputs are updated non-uniformly.•Inter-sample ripples occurred the sampling instants are eliminated.