Due to recent advances in technologies ranging from hydraulically-assisted prostheses to human-scale robotics, there is a growing need for compact and efficient delivery of hydraulic power. Existing electric driven pumps require conversion from electric to rotational power before generating hydraulic output power. This work presents a dynamic model and experimental results of a linear pump that uses an electromagnetic force applied directly to the piston, resulting in a more direct conversion of electrical to hydraulic power in a compact package at the human power level. The model uses a quasi-steady state magnetic equivalent circuit model for the linear electromagnetic actuator coupled to a numerical time-domain piston pump model. The coupled model calculates the piston trajectory, cylinder pressures, and flowrates as a function of time. The modeled force generation and resulting mechanical dynamics match results generated from finite element analysis within 7%, with a predicted power density of 0.19 W/cc and efficiency of 73% for an unoptomized geometry. A multi-objective genetic algorithm is used to determine the geometry and operating parameters that give maximum power density and maximum efficiency, demonstrating that power densities of 0.7 W/cc and efficiencies of 85% are achievable.
Skip Nav Destination
ASME/BATH 2017 Symposium on Fluid Power and Motion Control
October 16–19, 2017
Sarasota, Forida, USA
Conference Sponsors:
- Fluid Power Systems and Technology Division
ISBN:
978-0-7918-5833-2
PROCEEDINGS PAPER
Dynamic Modeling of a Linear Electromagnetic Piston Pump
Paul H. Hogan,
Paul H. Hogan
University of Minnesota, Minneapolis, MN
Search for other works by this author on:
James D. Van de Ven
James D. Van de Ven
University of Minnesota, Minneapolis, MN
Search for other works by this author on:
Paul H. Hogan
University of Minnesota, Minneapolis, MN
James D. Van de Ven
University of Minnesota, Minneapolis, MN
Paper No:
FPMC2017-4324, V001T01A062; 10 pages
Published Online:
December 4, 2017
Citation
Hogan, PH, & Van de Ven, JD. "Dynamic Modeling of a Linear Electromagnetic Piston Pump." Proceedings of the ASME/BATH 2017 Symposium on Fluid Power and Motion Control. ASME/BATH 2017 Symposium on Fluid Power and Motion Control. Sarasota, Forida, USA. October 16–19, 2017. V001T01A062. ASME. https://doi.org/10.1115/FPMC2017-4324
Download citation file:
70
Views
Related Proceedings Papers
Related Articles
Dynamic Modeling and Simulation of a Yaw-Angle Quadruped Maneuvering With a Planar Robotic Tail
J. Dyn. Sys., Meas., Control (August,2016)
Serial Metamorphic Manipulator Dynamics Formulation Implementing Screw Theory Tools
Letters Dyn. Sys. Control (October,2024)
The High Inertance Free Piston Engine Compressor—Part II: Design and Experimental Evaluation
J. Dyn. Sys., Meas., Control (July,2013)
Related Chapters
Later Single-Cylinder Engines
Air Engines: The History, Science, and Reality of the Perfect Engine
Introduction I: Role of Engineering Science
Fundamentals of heat Engines: Reciprocating and Gas Turbine Internal Combustion Engines
Concluding remarks
Mechanical Blood Trauma in Circulatory-Assist Devices