Destruction Avoidance for Dual Arm Construction Machinery Using Mechanical Impedance Adjustable Hydraulic Circuit

Development of hybrid powered hydraulic construction machinery

a r t i c l e i n f o Facing the environment problems, the improvement on the efficiency of the construction machinery such as the excavator and wheel loader is highly demanded. The hybrid power systems used in automobiles have been adapted into the construction machinery. This paper first analyzes the difference between the hybrid powered automobile vehicle and the hybrid powered construction ...

Global Impedance Control of Dual-Arm Manipulation for Safe Interaction

The impedance control of dual-arm 7-DOF cooperative manipulators is considered in this paper. Global compliant behavior for the whole system is achieved using impedance at three levels, i.e. object, end-effector and body level. A centralized impedance control strategy is provided to confer a compliant behavior to the object, while an active decentralized impedance with force tracking control is...

Hydraulic Remotely Adjustable Pulmonary Artery Banding

Each year approximately 2000 children are born with a form of congenital heart disease that would benefit from mechanical restriction, or banding, of the pulmonary artery. [1,2] Installing or changing the setup of the banding requires an open chest surgery and during the first 6 months of the patient’s life, physiological parameters evolve rapidly, resulting in need for frequent reoperations. M...

Mechanical properties determination of dual-phase steels using uniaxial tensile and hydraulic bulge test

Numerical simulations of sheet metal forming processes need the establishment of highly reliable results, which in turn need the accurate identification of mechanical properties. In this paper a study is presented on the choice of the characterization function of flow stress-strain curve of sheet metal materials, as well as the selection of the best yield locus, based on experimental uniaxial t...

Dual Adjustable Pulley (CMDAP)