The key technology of the prosthetic knee is to simulate torque and angle biological knee. In this work, we proposed a novel operated in semi-active mode. structure with ball-screw driven by motor passive hydraulic damping cylinder was presented. A four-bar linkage adapted track instantaneous center motion human mathematical models active were established angle. results show that symmetry index...

Robot trajectory tracking has been the core functioning unit in the modern industrial environment wherein the accuracy in the motion control of robotic manipulators is the main area of research. Based on the fact that the working of these automatic robotic machines is highly influenced by the disturbances, this paper constitutes various conventional controllers for the motion control of five ba...

Component batching can be a source of time waste in specific industrial applications, such as kitting. Kitting operations are usually performed by hoppers, but other devices used to optimize the process. In previous work, rotary device has been proved more efficient than hoppers; allows kitting and releasing components single rotatory movement, while traditional hoppers require at least two mov...

A linkage is a collection of line segments, called bars, possibly joined at their ends, called joints. We consider flattening a tree-like linkage, that is, a continuous motion of their bars from an initial configuration to a final configuration looking like a“straight line segment,” preserving the length of each bar and not crossing any two bars. In this paper, we introduce a new class of linka...

Because of their modified cranial morphology, syngnathid pipefishes have been described as extreme suction feeders. The presumption is that these fishes use their elongate snout much like a pipette in capturing planktonic prey. In this study, we quantify the contribution of suction to the feeding strike and quantitatively describe the prey capture mechanics of the bay pipefish Syngnathus leptor...