The authors present a novel power supply for mobile robotic systems. A monopropellant (e.g., hydrogen peroxide) decomposes into high temperature gases, which drive a free piston hydraulic pump (FPHP). The elimination of fuel/oxidizer mixing allows the design of simple, lightweight systems capable of operation in oxygen free environments. A thermodynamic analysis has been performed, and an experimental FPHP has been built and tested. The prototype successfully pumped hydraulic fluid, although the flow rate was limited by the off-the-shelf components used.
Monopropellant-Driven Free Piston Hydraulic Pump for Mobile Robotic Systems
Contributed by the Dynamic Systems, Measurement, and Control Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the ASME Dynamic Systems and Control Division March 5, 2003; final revision, July 8, 2003. Associate Editor: N. Manring.
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McGee, T. G., Raade, J. W., and Kazerooni, H. (April 12, 2004). "Monopropellant-Driven Free Piston Hydraulic Pump for Mobile Robotic Systems ." ASME. J. Dyn. Sys., Meas., Control. March 2004; 126(1): 75–81. https://doi.org/10.1115/1.1649972
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