Digital hydraulics is a new technology providing an alternative to conventional proportional or servovalve-controlled systems in the area of fluid power. Digital hydraulic applications, such as digital pumps, digital valves and actuators, switched inertance hydraulic converters (SIHCs) and digital hydraulic power management systems, promise high-energy efficiency and less contamination sensitivity. Research on digital hydraulics is driven by the need for highly energy efficient hydraulic machines but is relatively immature compared to other energy-saving technologies. This review introduces the development of SIHCs particularly focusing on the work being undertaken in the last 15 years and evaluates the device configurations, performance and control strategies that are found in current SIHC research. Various designs for high-speed switching valves are presented, and their advantages and limitations are compared and discussed. Current limitations of SIHCs are discussed and suggestions for the future development of SIHCs are made.
|Journal||Journal of Dynamic Systems, Measurement and Control: Transactions of the ASME|
|Early online date||1 Jan 2020|
|Publication status||E-pub ahead of print - 1 Jan 2020|