Results 91 to 100 of about 3,270 (221)
Mathematics, 2020 In existing methods, full-state feedback is required for the position tracking of single-rod Electro Hydrostatic Actuators (EHAs). Measuring a full state is not always possible because of cost and space limitations.
Wonhee Kim, Daehee Won
doaj +1 more source
Preliminary Investigation on Battery Sizing Investigation for Thrust Vector Control on Ares I and Ares V Launch Vehicles [PDF]
An investigation into the merits of battery powered Electro Hydrostatic Actuation (EHA) for Thrust Vector Control (TVC) of the Ares I and Ares V launch vehicles is described.
Miller, Thomas B.
core +1 more source
Phoenix: Preliminary design of a high speed civil transport [PDF]
The goal of the Phoenix Design Project was to develop a second generation high speed civil transport (HSCT) that will meet the needs of the traveler and airline industry beginning in the 21st century. The primary emphasis of the HSCT is to take advantage
Aguilar, Joseph +5 more
core +1 more source
Energies, 2019 This paper addresses a new reliability model, based on energy dissipation, considering performance degradation behaviors. Different from the two-state reliability model and traditional reliability model based on failure rate statistics, this paper ...
Xiaoyu Cui +3 more
doaj +1 more source
CONDOR: Long endurance high altitude vehicle, volume 5 [PDF]
The results of a design study resulting in the proposed CONDOR aircraft are presented. The basic requirements are for the aircraft to maintain continuous altitude at or above 45,000 feet for at least a 3-day mission, be able to comfortably support a two ...
Andrews, L. Cullen +6 more
core +1 more source
Synthesis of an electro hydrostatic actuator from bicausal bond graphs [PDF]
, 2007 In this paper, the structure of an Electro Hydrostatic Actuator (EHA) devoted to flight control surfaces is firstly described by its Causal Bond Graph (CBG).
Gandanegara, Grace +3 more
core
A comparison of sigma-point Kalman filters on an aerospace actuator [PDF]
This paper contains a comparison of several sigma-point Kalman filters, including the unscented Kalman filter (UKF), the cubature Kalman filter (CKF), and the central difference Kalman filter (CDKF).
Al-Shabi M +3 more
core +1 more source
Condition Monitoring of an Electro-Hydrostatic Actuator Using the Dynamic 2nd-Order Smooth Variable Structure Filter [PDF]
This paper introduces the dynamic 2nd-order Smooth Variable Structure Filter (Dynamic 2nd-order SVSF) method for the purpose of robust state estimation.
Afshari HH, Gadsden SA, Habibi S
core +1 more source
NONLINEAR MODELING AND CONTROL DESIGN OF ELECTRO-HYDROSTATIC ACTUATOR
Proceedings of the JFPS International Symposium on Fluid Power, 2008 In this paper, a typical architecture of Electro-Hydrostatic Actuator (EHA) is described and modeled by the block diagram based on mathematic equations, which is a nonlinear accuracy model. The single PID, cascade PID and state feedback controllers are respectively designed and applied to this model for comparison analysis that focused on system ...
Rongjie KANG +2 more
openaire +2 more sources
Erosion Degradation Characteristics of a Linear Electro-Hydrostatic Actuator Under a High-Frequency Turbulent Flow Field [PDF]
, 2018 The paper proposes a performance degradation analysis model based on dynamic erosion wear for a novel Linear Electro-Hydrostatic Actuator (LEHA). Rather than the traditional statistical methods based on degradation data, the method proposed in this paper
Li, Yuan +3 more
core +3 more sources