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Exoskeleton robots require powerful and lightweight power supplies. Because of its high power-to-mass ratio and fast response, hydraulic systems can meet the requirement for locomotion robots. In this paper, a novel compact hydraulic power unit (CHPU) is proposed. A two-stroke IC engine, with a rated power of 2.4kW at 13,000rpm, is used as the prime mover. The engine drives a high speed (10,000rpm)...
In this paper, a novel pulsation attenuator for pressure-controlled aircraft pump is developed, analyzed and tested. Several key components, such as pistons, the swash plate and the control valve, are modeled and discussed for analysis of the flow and pressure fluctuations. The structure, parameters and the location of the attenuator is investigated. The attenuator can adjust itself to keep its performance...
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