Nonlinear dynamic analysis and control of a hydraulic press electro-hydraulic servo system

Autor: Chin-Tsung Hsieh, Chien-Pang Lai
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Journal of Low Frequency Noise, Vibration and Active Control, Vol 38 (2019)
Druh dokumentu: article
ISSN: 1461-3484
2048-4046
14613484
DOI: 10.1177/1461348418813021
Popis: The internal electro-hydraulic servo system of a hydraulic press is affected by the non-linear friction, and it becomes non-linear, unstable under vibration. In this study, the dynamic behavior and control of such a system were investigated. A mathematical model was first built and then proportional-integral-derivative control and sliding mode control were applied. Particle swarm optimization was used to find the optimal gain values and proportional-integral-derivative control parameters to control and stabilize the system. Sliding mode control was used for interactive comparison to demonstrate that the controller could avert chaos and restore stable periodic motion. A circuit was designed and assembled for the experimental confirmation of the results. The results showed that control of nonlinear behavior was better with sliding mode control than proportional-integral-derivative. This study can serve as a reference for the further investigation of hydraulic press electro-hydraulic servo systems.
Databáze: Directory of Open Access Journals
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