skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Multiple degree-of-freedom mechanical interface to a computer system

Patent ·
OSTI ID:873785

A method and apparatus for providing high bandwidth and low noise mechanical input and output for computer systems. A gimbal mechanism provides two revolute degrees of freedom to an object about two axes of rotation. A linear axis member is coupled to the gimbal mechanism at the intersection of the two axes of rotation. The linear axis member is capable of being translated along a third axis to provide a third degree of freedom. The user object is coupled to the linear axis member and is thus translatable along the third axis so that the object can be moved along all three degrees of freedom. Transducers associated with the provided degrees of freedom include sensors and actuators and provide an electromechanical interface between the object and a digital processing system. Capstan drive mechanisms transmit forces between the transducers and the object. The linear axis member can also be rotated about its lengthwise axis to provide a fourth degree of freedom, and, optionally, a floating gimbal mechanism is coupled to the linear axis member to provide fifth and sixth degrees of freedom to an object. Transducer sensors are associated with the fourth, fifth, and sixth degrees of freedom. The interface is well suited for simulations of medical procedures and simulations in which an object such as a stylus or a joystick is moved and manipulated by the user.

Research Organization:
Immersion Human Interface Corp. (San Jose, CA)
DOE Contract Number:
FG03-94ER86008
Assignee:
Immersion Corporation (San Jose, CA)
Patent Number(s):
US 6246390
OSTI ID:
873785
Country of Publication:
United States
Language:
English

References (19)

Design of a four degree-of-freedom force-reflecting manipulandum with a specified force/torque workspace conference January 1991
Virtual fixtures as tools to enhance operator performance in telepresence environments conference December 1993
Performance evaluation of a six-axis generalized force-reflecting teleoperator journal January 1991
Task performance with a dexterous teleoperated hand system conference March 1993
Perceptual decomposition of virtual haptic surfaces conference January 1993
The phantom robot: predictive displays for teleoperation with time delay conference January 1990
Development of surface display conference January 1993
Implementation of stiff virtual walls in force-reflecting interfaces conference January 1993
Feeling and seeing: issues in force display conference January 1990
Pen-based haptic virtual environment conference January 1993
Design and Multi-Objective Optimization of a Linkage for a Haptic Interface book January 1994
Virtual haptic overlays enhance performance in telepresence tasks conference December 1995
Computing with feeling journal January 1977
The pantograph: a large workspace haptic device for multimodal human computer interaction conference January 1994
Pen-based force display for precision manipulation in virtual environments conference January 1995
Combining haptic and braille technologies: design issues and pilot study conference January 1996
Kinematic analysis of five-link spherical mechanisms journal June 1974
Artificial reality with force-feedback: development of desktop virtual space with compact master manipulator journal September 1990
Project GROPEHaptic displays for scientific visualization journal September 1990