The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 1983
Filed:
Feb. 04, 1981
Philip N Bowditch, Cohasset, MA (US);
James E Negro, Wellesley, MA (US);
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
Abstract
A gimballed platform stabilization system includes at least one outer member, an inner member, and an intermediate inertia bearing member. The intermediate member has limited coaxial angular freedom about an isolation axis with respect to the inner and outer members. A limited freedom (about the isolation axis) torsional flexure element is coupled between the intermediate and inner members. A first servo loop establishes a 'negative spring rate' in parallel with the positive spring rate associated with the flexure element, maintaining a low net effective spring force on the inner member. A second servo loop prevents the angular excursion between the intermediate member and the inner member to extend beyond the limits of the flexure element. This inertia reaction stabilization configuration reduces disturbing torques from a stabilization axis to non-linear spring residuals which are relatively small.