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

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

Blog Article

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 Dabs values and proportional-integral-derivative control parameters to control and stabilize the system.Sliding Wooden Train Set 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.