Abstract

This article investigates the event-triggered adaptiverobust motion control for hydraulic actuators with parametricuncertainties and system nonlinearities. Under the continuouscommunication condition, the traditional adaptive robust motioncontroller is recursively presented. In order to reduce the unnec-essary bandwidth consumption in the aero-engine networkedcontrol platform, an adaptive threshold triggered mechanismaccording to network resources is developed to synthesize themotion controller. Adjustable threshold parameters are involvedto flexibly adjust the data transmission times depending onthe network bandwidth occupation. It is proved that withthe motion controller and the proposed adjustable thresholdtriggered mechanism, all the closed-loop system signals areglobally bounded, and the hydraulic system output achievesasymptotic tracking to the reference trajectory by virtue ofthe adaptive technique, the Nussbaum-type and sign functions.Besides, the Zeno behavior is excluded, successfully. Finally, theproposed event-based control scheme is tested and discussed onthe aero-engine hardware-in-the-loop (HIL) experiment platformwith hydraulic actuators.