Alternating pressure control system for hydraulic robots

Hydraulics is a promising technology for robots. However, traditional hydraulic infrastructures are often large and power-inefficient, with power sources that hinder mobility. In contrast, electro-hydrostatic actuators relatively efficient, but their cost weight can be excessive in systems higher number of degrees freedom. this paper, we propose new alternating pressure control system freedom based on an source system. system, the valves open close synchronization pump sensor feedback, allowing either or position each actuator to controlled independently. With proposed centralized used simplified tubing simple on–off valves. Moreover, developed dynamic duty ratio improves performance reduces utilization time. The experimental results confirmed both parallel multi-degree-of-freedom