In impedance control of hydraulic excavators the piston position and ram force of each hydraulic cylinder for the axis control of the boom, arm, and bucket can be determined. The problem is thus how to find the control voltage applied to the servovalves to track these commands to the hydraulic systems. This paper presents analytic, simulation and experimental results for controllers that have b...

A hydraulic press is a machine using cylinder to generate compressive force. The works on Pascal’s principle, which states that the pressure throughout closed system constant. Hydraulic presses are commonly used for forging, clinching, moulding, blanking, punching, deep drawings and metal forming operations.200-ton capacity frame modelled Solidworks analysed by solidworks simulation finite elem...

Abstract RamRig hosting system is a common for offshore and onshore drilling rigs, which uses ram cylinders to lift lower the top drive on rig. In order ensure accuracy, stability robustness of synchronous control system, RBF neural network used adjust PID parameters online, three loop simulation model based optimized controller built in AMESim Simulink. The results show that hydraulic circuit ...

d n d T he iPIX by Saremi et al. (1) in this issue of iJACC highlights the precision of current imaging techniques in displaying the complex 3-dimensional structure of the right entricle (RV). The investigators illustrate the inricacy of normal RV geometry, highlighting the istributions of anatomical folds, irregular trabeulations and, more importantly, the RV inundibulum. These remarkable pict...