Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers J. Vib. Acoust. 2015;137(1):011012-011012-7. doi:10.1115/1.4028310 Figure Legend: Model of the EHA system for linear motion

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers J. Vib. Acoust. 2015;137(1):011012-011012-7. doi:10.1115/1.4028310 Figure Legend: Mechanical equivalent model of the EHA system for linear motion

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers J. Vib. Acoust. 2015;137(1):011012-011012-7. doi:10.1115/1.4028310 Figure Legend: Block diagram of the EHA device control strategy

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers J. Vib. Acoust. 2015;137(1):011012-011012-7. doi:10.1115/1.4028310 Figure Legend: Conceptual representation of the magnitude frequency response of Gv(s) and GF(s) in the three indicated limit conditions: (a) ωe>>ωeq (b) ωe≪ωeq, (c) |ωe-ωeq|  <  2ke/meq

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers J. Vib. Acoust. 2015;137(1):011012-011012-7. doi:10.1115/1.4028310 Figure Legend: Adaptive lead-lag damping requirements. High (dashed) and low (solid) damping responses are compared.

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers J. Vib. Acoust. 2015;137(1):011012-011012-7. doi:10.1115/1.4028310 Figure Legend: Prototype CAD exploded view. (1) Pump side cover, (2) pump journal bearings, (3) pump gears, (4) damper inlet plug (×2), (5) pressure sensor (× 2), (6) electric motor, (7) drain interface, (8) EHA manifold, (9) motor side cover, (10) electric wirings connector, (11) Hall sensors and magnetic disk, (12) damper case, and (13) damper fluid inlets.

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers J. Vib. Acoust. 2015;137(1):011012-011012-7. doi:10.1115/1.4028310 Figure Legend: Prototype installed on the test bench. (1) Load cell fixed to the test bench frame, (2) EHA pressure sensors, (3) cooling fan and vent, (4) driving ram, (5) damper case, and (6) EHA device

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers J. Vib. Acoust. 2015;137(1):011012-011012-7. doi:10.1115/1.4028310 Figure Legend: Force-velocity response of the damper at (a) f = 1.26 Hz and (b) f = 4.75 Hz. Data obtained with open-circuited motor windings (square), short-circuited motor windings (triangle), and active control (circle) are compared to the high-damping (dashed) and low-damping (solid) curves. Simulation data are presented in solid markers while experimental data are presented in hollow markers.