Electrical switching techniques employ fairly simple principles for the control of electrical drives or power supply units. They have excellent energetic efficiency and energy can even be recuperated. It’s no wonder that such principles and their advantages are considered for a use in hydraulics, too.
In this thesis the hydraulic step down converter – also called buck converter – is realized the first time. Its prin-ciple and its basic performance characteristics are ex-plained by simple mathematical models. Experimental results by first prototypal realizations are used to advance the computational models and to realize improved prototypal buck converters. The expected increased energetic efficiency and the option to even recuperate energy are shown computationally and experimentally. The thesis investigates several control methods to employ the converter for linear motion control theoretically and experimentally. Some case studies demonstrate the high energy saving potential of this converter. The thesis is rounded off by an outlook to further improvements and to the realization of other hydraulic switching control principles.