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A Position Synchronization Control for Dual Redundant Electro-mechanical Actuation in Flight Control System

Deyi Wang 1, Deqiang Li 1, Juan Chen 2, and Shicheng Zheng 2
1. Bejing Aerospace Automatic Control Institute, Beijing, China
Department National Key Laboratory of Science and Technology on Aerospace Intelligence Control, Beijing, China
2. Beihang University, Beijing, China
Abstract—The paper develops a position synchronization controller for a new active/active dual redundant electro-mechanical actuation system and designs a test platform to validate the performance of the controller. The mathematic models of the position synchronization system are firstly built based on the schematic of the active/active dual redundant electro-mechanical actuation system. The position controller for DEMA and GEMA of is developed based on the velocity and acceleration feed forward and traditional PID theory. A series of motion experiments are carried out to verify the effectiveness of the controller design for active/active dual redundant electro-mechanical actuation system. The experiments results show that the position controllers designed for either DEMA or GEMA are satisfied, the biggest following error is not more than 0.1mm. And the synchronous motion tests show that the PI plus Output Saturation feedback position synchronization control can reduce more than 30 percent synchronous position errors. Furthermore, the tests of position synchronization show that EMA stiffness has a big influence on the synchronous precision. The new position synchronization controller designed based on the accurate system model and actual system parameters can better achieve the position synchronization requirements of the dual redundant EMA system, which makes good sense for redundant systems.

Index Terms—active/active, synchronous controller, flight control system, dual redundancy system, electro mechanical, actuation, forth fighting

Cite: Deyi Wang, Deqiang Li, Juan Chen, and Shicheng Zheng, "A Position Synchronization Control for Dual Redundant Electro-mechanical Actuation in Flight Control System," Journal of Automation and Control Engineering, Vol. 7, No. 1, pp. 13-19, June, 2019. doi: 10.18178/joace.7.1.13-19
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