Abstract
The authors developed devices of passive type force display function that use only brakes in place of actuators for working elements. In addition, they developed an application that could evaluate such devices quantitatively. They contrived that usefulness of force display systems can be evaluated quantitatively, and so examined the usefulness of devices experimentally. However, significant differences of usefulness were lower than expected. Therefore they plan an application that can evaluate operating efficiency with basic manipulations and aim to achieve results that gets large significant difference according with how the force display functions contribute.
