Skip to Content
Find More Like This
Return to Search

Apparatus and methods for a human extender

United States Patent

August 14, 2001
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A human extender controller for interface between a human operator and a physical object through a physical plant. The human extender controller uses an inner-feedback loop to increase the equivalent damping of the operating system to stabilize the system when it contacts with the environment and reduces the impact of the environment variation by utilizing a high feedback gain, determined by a root locus sketch. Because the stability of the human extender controller of the present invention is greatly enhanced over that of the prior art, the present invention is able to achieve a force reflection ratio 500 to 1 and capable of handling loads above the two (2) ton range.
Jansen; John F. (Knoxville, TN)
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
09/ 253,436
February 19, 1999
This invention was made with Government support under a contract awarded by the U.S. Department of Energy, and the Government has certain rights in this invention.