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In this study, we developed a 4-degrees of freedom (DOF) force feedback device independent of its operational component comprising pneumatic artificial muscles and magnetorheological clutches. Research and development of force feedback devices is becoming popular in fields such as entertainment, remote operation, and rehabilitation. These areas of research are related to virtual reality and augmented...
A bilateral hydraulic servo control system is build for teleportation force feedback. The bilateral servo system is a master-slave system in which the hydraulic force feedback joysticks works as the master part. The system control scheme is based on the control character, and a position-velocity force feedback scheme which shows good transparency on the condition of soft and unloaded is proposed by...
This work first provides an overview of haptic gloves found in the literature, with a focus on their applications and their requirements. This information is then used to justify the use of Magnetorheological Fluid (MRF), a smart fluid which reversibly changes viscosity proportionally to an applied magnetic field, to effect the force feedback in a haptic glove. This is followed by the development...
We challenge ourselves to allow a user to feel how to stir a pool of 3D fluid in a virtual environment. Fluids are objects where the shape can not be defined using conventional polygons, and the graphical rendering and haptic rendering are purely based on mathematical calculation from the Navier-Stokes equation. Through a haptic probe the user is able to introduce perturbations in a pool of simulated...
Many kinds of actuator-based (active type) haptic devices have developed and utilized as rehabilitation robots. These systems have great advantages for rehabilitative activities, for example assistive forces and so on. However, from the view point of safety, we have a room to consider utilizing brake-based (passive type) haptic devices as rehabilitation-tools. The effects and roles of active / passive...
We developed a compact and low-cost quasi-3-DOF rehabilitation system ldquoHybrid-PLEMOrdquo for upper limbs of stroke patients. Hybrid-PLEMO has 2-DOF force feedback function in working plane, its working plane can be adjusted the inclination, and it can be switched between active type and passive type. However, there are some directions and link positions which are difficult to display the force...
Several 2-DOF rehabilitation robots for upper limbs have been proposed so far, and clinical effectiveness was reported in several studies for the aged people or patients with stroke. We developed the quasi 3-DOF rehabilitation system ldquoHybrid PLEMOrdquo which has 2-DOF force-feedback function in working plane but its working plane can be adjusted the inclination. Hybrid-PLEMO is a compact, low-cost...
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