| Autors: Kralev, J. K., Mitov, A. S., Slavov, T. N. Title: Robust µ-controller for hydraulic spool valve, pilot operated with switching micro valves Keywords: Electro-hydraulic spool valve; Micro valves; Robust control; Abstract: Hydraulic spool valve, pilot operated with bi-state switching micro valves is a low-cost alternative to the conventional proportional and high-response valves. However, high-frequency switching causes variations in the control flow which limits achievable spool tracking error. This paper presents the design of a robust µ-controller for the spool position reference tracking synthesized with D-K iterative procedure. Furthermore, in order to reduce wind-up effects in the closed-loop, the µ-controller is decomposed to a canonical observer and state feedback components which allows explicit introduction of the saturated control signal in the controller equations. The uncertainty model required for the µ-synthesis is inferred from the nonlinear hydraulic model by identification of a Box– Jenkins model set characterized by its parameter covariance matrix. The regulator is implemented in a 32-bit programmable logic controller (PLC) and its performance is experimentally verified.. References Issue
Copyright Multidisciplinary Digital Publishing Institute (MDPI) |
Цитирания (Citation/s):
1. Mihalev, G., Yordanov, S., Ormandzhiev, K., Kostov, K. and Mitev, V., 2022, October. Robust Control of Electro-Hydraulic Servo System. In 2022 International Conference Automatics and Informatics (ICAI) (pp. 218-222). IEEE. - 2022 - в издания, индексирани в Scopus и Web of Science
2. Li Y., Li R., Yang J., Yu X., Xu J., Review of Recent Advances in the Drive Method of Hydraulic Control Valve. Processes, 11 (9), 2023. - 2023 - в издания, индексирани в Scopus и Web of Science
Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus и Web of Science
