@ARTICLE{acinpaper, author = {Kemmetmüller, W. and Kugi, A.}, title = {Immersion and invariance-based impedance control for electrohydraulic systems}, journal = {International Journal of Robust and Nonlinear Control}, year = {2010}, volume = {20}, pages = {725-744}, number = {7}, doi = {10.1002/rnc.1462}, url = {http://onlinelibrary.wiley.com/doi/10.1002/rnc.1462/abstract;jsessionid=6 A29196214...

Electrohydraulic lithotripsy of human gall stones was investigated in vitro in a bath of saline and in a saline perfused bile duct. The technique was effective--only two stones could not be shattered. Electrohydraulic lithotripsy power requirement correlated with mechanical strength of stones, but not with biochemical composition. A trend toward higher power requirement was recorded with larger...

High bandwidth, high flow rate electrohydraulic valves typically have two or more stages. Most multi-stage valves are expensive, require meticulously clean fluid, and introduce higher order dynamics. On the other hand, single-stage spool valves are cheaper and more reliable. However, a majority of them are not suitable for high bandwidth, high flow rate applications due to limitations of the el...

The paper discusses electrohydraulic variable supply systems in different design concepts. In the forefront of discussion are concepts with constant and speed-controlled electric motor combination pumps, implemented within control strategies.

In this paper, the nonlinear optimal control problem is formulated for the position control of an electrohydraulic servo system. The optimal control is given by the solution to the Hamilton-Jacobi-Bellman equation, which in this case cannot be solved explicitly. An alternative method, based upon successive Galerkin approximation, is used to obtain an approximate optimal solution. Preliminary si...