Abstract: An integrated haptic feedback simulating device using a kinesthesia providing module including a magnetorheological fluid and a thin-film-type tactile sensation providing module. The integrated haptic feedback simulating device includes a motion controlling section providing kinesthetic feedback and tactile feedback to a hand of a user, a system controlling section detecting motions of the hand and providing an integrated haptic feedback control signal to the motion controlling section, and a display section visually rendering a graphic object according to the detected motions of the hand. The integrated haptic feedback simulating device can provide synesthetic haptic feedback to the user in cooperation with a graphic interface displayed on the display section, thereby increasing the virtuality of the graphic object simulated on the display section.

Abstract: A radio system capable of multiplexing communication includes a main radio, a master radio, a sub-radio, and a connecting unit having a PTT switch built therein. The enforcement of tactical operations and maintaining a dominant position in terms of combat effectiveness can be achieved by performing swift and smooth communication using master and sub-radios.

Abstract: A rotary actuator and a method of providing kinesthesia using a magnetorheological fluid are provided. The method includes generating a solenoid which generates a magnetic field, thereby forming flux lines, in response to a current being applied thereto. A cylindrical rotor surrounds inner, outer and top surfaces of the solenoid, is freely rotatable about a rotary shaft disposed in an opened central portion thereof. A cylindrical housing surrounds inner, outer and bottom surfaces of the solenoid, and engages with the rotor. The magnetorheological fluid is disposed inside gaps among the solenoid, the rotor and the housing, and generates magnetic chains along the flux lines in response to the magnetic field. The thickness of walls of the rotor which surround the inner and outer surfaces of the solenoid decreases in the top-to-bottom direction. A space having a predetermined width is defined around the rotary shaft.