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Sensors 2017, 17(11), 2444; https://doi.org/10.3390/s17112444

Linear Extended State Observer-Based Motion Synchronization Control for Hybrid Actuation System of More Electric Aircraft

School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
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Received: 17 August 2017 / Revised: 8 October 2017 / Accepted: 18 October 2017 / Published: 25 October 2017
(This article belongs to the Special Issue Mechatronic Systems for Automatic Vehicles)
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Abstract

Moving towards the more electric aircraft (MEA), a hybrid actuator configuration provides an opportunity to introduce electromechanical actuator (EMA) into primary flight control. In the hybrid actuation system (HAS), an electro-hydraulic servo actuator (EHSA) and an EMA operate on the same control surface. In order to solve force fighting problem in HAS, this paper proposes a novel linear extended state observer (LESO)-based motion synchronization control method. To cope with the problem of unavailability of the state signals required by the motion synchronization controller, LESO is designed for EHSA and EMA to observe the state variables. Based on the observed states of LESO, motion synchronization controllers could enable EHSA and EMA to simultaneously track the desired motion trajectories. Additionally, nonlinearities, uncertainties and unknown disturbances as well as the coupling term between EHSA and EMA can be estimated and compensated by using the extended state of the proposed LESO. Finally, comparative simulation results indicate that the proposed LESO-based motion synchronization controller could reduce significant force fighting between EHSA and EMA. View Full-Text
Keywords: hybrid actuation system; electro-hydraulic servo actuator; electromechanical actuator; more electric aircraft; motion synchronization control; extended state observer hybrid actuation system; electro-hydraulic servo actuator; electromechanical actuator; more electric aircraft; motion synchronization control; extended state observer
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Wang, X.; Liao, R.; Shi, C.; Wang, S. Linear Extended State Observer-Based Motion Synchronization Control for Hybrid Actuation System of More Electric Aircraft. Sensors 2017, 17, 2444.

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