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A Study on the Improvement of Force Fighting Phenomenon in the Redundant Hydraulic Servo Actuators  

Lee, Hee-Joong (발사체제어팀)
Choi, Hyung-Don (발사체제어팀)
Kang, E-Sok (충남대학교)
Publication Information
Aerospace Engineering and Technology / v.12, no.1, 2013 , pp. 54-63 More about this Journal
Abstract
In general, multiple hydraulic servo actuators are installed on one control surface of aero-dynamically highly loaded condition aircraft for redundancy management to satisfy flight control safety requirements. If motions of multiple actuators are not synchronized, control surface is deformed from its free stressed state. In result, force fight conditions are generated on each actuator due to restoration reaction force of deformed control surface. In addition, force fight is induced from severe initial rigging tolerance. Force fight condition of multiple actuators affects control accuracies and reduces operational life of actuators and control surface due to fatigue phenomenon. In this study, we designed controller using force feedback to reduce force fight of duplex servo actuation system.
Keywords
force fighting; servo actuator; flight control surface;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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