Modeling and control of a monopropellant-based pneumatic actuation system

2004 ◽  
Author(s):  
E.J. Barth ◽  
M.A. Gogola ◽  
M. Goldfarb
Keyword(s):  
Modeling And Control ◽  
Pneumatic Actuation ◽  
Actuation System ◽  
And Control

scholarly journals Modeling and Control of an Electromagnetic Variable Valve Actuation System

2015 ◽  
Vol 20 (6) ◽  
pp. 2654-2665 ◽  
Author(s):  
Brian A. Paden ◽  
Shaun T. Snyder ◽  
Brad E. Paden ◽  
Michael R. Ricci
Keyword(s):  
Modeling And Control ◽  
Variable Valve Actuation ◽  
Actuation System ◽  
Variable Valve ◽  
And Control ◽  
Valve Actuation

Modeling and Control of a Novel Linear-Driven Electro-Hydrostatic Actuator Using Energetic Macroscopic Representation

2018 ◽  
Vol 140 (7) ◽  
Author(s):  
Zongxia Jiao ◽  
Zimeng Wang ◽  
Xinglu Li
Keyword(s):  
Power Flow ◽  
Control Structure ◽  
Hydraulic Cylinder ◽  
Graphical Modeling ◽  
Modeling Tool ◽  
Modeling And Control ◽  
Actuation System ◽  
Spool Valves ◽  
And Control

Energetic macroscopic representation (EMR) is an effective graphical modeling tool for multiphysical systems, and EMR model clearly illustrates the power flow and interaction between different subcomponents. This paper presents the modeling and control of a novel linear-driven electro-hydrostatic actuator (LEHA) with EMR method. The LEHA is a novel electro-hydrostatic actuation system, and the hydraulic cylinder in LEHA is driven by a novel collaborative rectification pump (CRP), which incorporates two miniature cylinders and two spool valves. EMR model clearly illustrated the powertrain in LEHA and interaction between each components. Based on EMR model, a maximum control structure (MCS) is easily deduced using the action and reaction principle, and then the practicable controller deduced from MCS shows satisfying performance in the simulation.

Modeling and Control of the Twisted String Actuation System

2013 ◽  
Vol 18 (2) ◽  
pp. 664-673 ◽  
Author(s):  
Gianluca Palli ◽  
Ciro Natale ◽  
Chris May ◽  
Claudio Melchiorri ◽  
Thomas Wurtz
Keyword(s):  
Modeling And Control ◽  
Actuation System ◽  
Twisted String ◽  
And Control

Dynamic Modeling and Control of an Electromechanical Control Actuation System

2017 ◽  
Author(s):  
Ümit Yerlikaya ◽  
R. Tuna Balkan
Keyword(s):  
Nonlinear Model ◽  
Equations Of Motion ◽  
Ball Screw ◽  
Loop Control ◽  
Modeling And Control ◽  
Performance Requirements ◽  
Actuation System ◽  
Lever Mechanism ◽  
Actuation Systems ◽  
And Control

Electromechanical actuators are widely used in miscellaneous applications in engineering such as aircrafts, missiles, etc. due to their momentary overdrive capability, long-term storability, and low quiescent power/low maintenance characteristics. This work focuses on electromechanical control actuation systems (CAS) that are composed of a brushless direct current motor, ball screw, and lever mechanism. In this type of CAS, nonlinearity and asymmetry occur due to the lever mechanism itself, saturation limits, Coulomb friction, backlash, and initial mounting position of lever mechanism. In this study, both nonlinear and linear mathematical models are obtained using governing equations of motion. By using the linear model, it is shown that employing a PI-controller for position and a P-controller for velocity will be sufficient to satisfy performance requirements in the inner-loop control of an electromechanical CAS. The unknown controller parameters and anti-windup coefficient are obtained by the Optimization Tools of MATLAB using nonlinear model. Results obtained from the nonlinear model and real-time unloaded and loaded tests on a prototype developed are compared to verify the nonlinear model.

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