Modeling and Analysis of Small-Scale Hydraulic Systems

The analytical models suggested the following design guidelines:
rst, high operating pressure is needed for hydraulic actuation systems to weigh lighter
than equivalent electro-mechanical systems; second, critical dimension thresholds exist
for hydraulic and electro-mechanical components, which should not be exceeded to
achieve reasonable system eciency; third, component eciency plays a more important
role than component weight to gain higher system power density; lastly, for applications
where the actuator system weight matters the most, high pressure small-scale hydraulic
systems are preferred over electro-mechanical systems, but for applications where the
overall system weight matters the most, electro-mechanical systems work better.