Comparison of linear control algorithms for a class of nonlinear mechanical actuators [PDF]
, 2015 This paper presents a comparison between various control strategies for a class of mechanical actuators common in heavy-duty industry. Typical actuator components are hydraulic or pneumatic elements with static nonlinearities, which are commonly referred
De Keyser, Robain +1 more
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Simulation of an electro-hydraulic servo valve driven by an ultrasonic motor [PDF]
Mechanical SciencesThe conventional electro-hydraulic servo valve is driven by an electromagnet, which is easily disturbed and has poor dynamic performance, seriously restricting the flow control accuracy.
R. Niu, B. Zhou, Z. Pan
doaj +1 more source
Redundant actuator development program [PDF]
Two concepts of redundant secondary actuator mechanization, applicable to future advanced flight control systems, were studied to quantitatively assess their design applicability to an AST.
Chenoweth, C. C. +2 more
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Research on Multi-Mode Control of Electro-Hydraulic Variable Displacement Pump Driven by Servo Motor
ActuatorsThe electro-hydraulic power source with an electro-hydraulic variable pump driven by a servo motor is suitable for electrified construction machinery. To achieve better energy efficiency in different working conditions, the multi-mode control scheme was ...
Zhiqiang Zhang +5 more
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Independent Orbiter Assessment (IOA): Analysis of the ascent thrust vector control actuator subsystem [PDF]
The results of the Independent Orbiter Assessment (IOA) of the Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) are presented. The IOA approach features a top-down analysis of the hardware to determine failure modes, criticality ...
Riccio, J. R., Wilson, R. E.
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The technical roadmap of the development of variable pitch propeller governors for turboprop
Hangkong gongcheng jinzhanThe variable pitch governor controls the propeller to maintain a constant speed，so that the propeller can be energy-saving and efficient in a wider range of flight envelope.
CHEN Tingting, GUO Yong, PAN Zhongjian
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Independent Orbiter Assessment (IOA): Analysis of the elevon subsystem [PDF]
The results of the Independent Orbiter Assessment (IOA) of the Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) are presented. The IOA approach features a top-down analysis of the hardware to determine failure modes, criticality ...
Riccio, J. R., Wilson, R. E.
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A study of low-cost reliable actuators for light aircraft. Part A: Chapters 1-8 [PDF]
An analysis involving electro-mechanical, electro-pneumatic, and electro-hydraulic actuators was performed to study which are compatible for use in the primary and secondary flight controls of a single engine light aircraft.
Eijsink, H., Rice, M.
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A Novel Composite Control Algorithm for Restraining Nonlinear Superfluous Forces
IEEE Access, 2019 A novel composite control algorithm is proposed to restrain nonlinear superfluous forces of a dual-channel load simulator. The dual-channel load simulator is utilized to measure the dynamic characteristic of an integrated hydraulic driving unit.
Lingxiao Quan +3 more
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Diagnostic procedures for antenna hydraulic drive systems [PDF]
Diagnostic, testing, and maintenance procedures for hydraulic drive systems for large steerable ...
Lombardo, J. J. +2 more
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