8 accepted papers
In an earthquake simulator, which is a device for reproducing seismic waves, it is necessary to accurately reproduce the acceleration. In this letter, the authors propose an offline reference trajectory shaping method for precise acceleration control based on the dynamic model of an earthquake simul
Stiffness modulation in walking is critical to maintain static/dynamic stability as well as to minimize energy consumption and impact damage. However, optimal, or even functional, stiffness parameterization remains unresolved in legged robotics. We introduce an architecture for stiffness control uti
An extendable robot inspired by origami is designed, analyzed, and tested. Its deployable origami structure has a large extension ratio, allowing the robot to extend the body length multiple times. The new robot, however, differs from the existing origami structure in two aspects. One is that the ro
In this paper, the development of a two-degrees-of-freedom (DOF) human-powered robot using regenerative clutches and constant-force springs is described. A regenerative clutch can control a transmitted torque precisely and it includes a regenerative brake and a differential gear mechanism. The singl…
In this paper, a development of a single DOF joint drive mechanism using regenerative servo clutches is described. The regenerative servo clutch is a kind of a clutch developed by the authors which consists of a regenerative brake and a differential gear mechanism, and it can control the transmitted…
More than thirty years after the initial concepts, commercial Delta and Delta-like robots serve a niche market for high-speed pick-and-place applications. Expired patents and new fields of application have led to increased research and innovative designs. By functionally extending the original trans
Future production systems must meet the continual demands for improved productivity and energy efficiency. Being flexible and adaptable, reconfigurable systems offer great opportunities to face these challenges. Against this background, this letter is concerned with the reconfiguration planning of D
This paper discusses the design and implementation of a three dimensional magnetic tweezer system to achieve measurement of mechanical properties of living cells by touching a magnetically levitated micro probe to specimen cells. The system consists of a three dimensional magnetic tweezer, an invert