Data-driven control for multi-rate multi-input/single-output systems. (July 2022)

• Record Type: Journal Article
• Authors: Sato, T.; Sakai, Y.; Kawaguchi, N.; Inoue, A.
• Is Part Of: ISA transactions. Volume 126(2022)
• Page Start: 254
• Page End: 262
• Publication Date: 2022-07
• Subjects: Sampled-data control -- Data-driven -- Non-uniform -- Multi-input -- Adaptive control; Engineering instruments -- Periodicals; Engineering instruments; Periodicals; Electronic journals; 629.805
• DOI: 10.1016/j.isatra.2021.07.035
• Languages: English
• ISSNs: 0019-0578

Abstract

Abstract: 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. Highlights: 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.