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:
Jun. 27, 1995
Filed:
Oct. 20, 1992
Glenn A Kramer, Austin, TX (US);
Schlumberger Technology Corporation, Austin, TX (US);
Abstract
A method of dynamic simulation of mechanisms which constructs the lagrangian form of the dynamics equations as pure differential equations in terms of a minimal set of generalized coordinates. The dynamics problem is separated into two parts used in the lagrangian--a kinematic analysis and a kinetics analysis. The kinematic analysis is computed using a degrees of freedom analysis. The velocities required for the kinetic analysis are computed using screw theory. Once constructed, the lagrangian dynamics equations are solved for accelerations, applied to the mechanism, and integrated over time to simulate the dynamics of the mechanism. The kinetic and kinematic analyses are approximately linearly related to the number of components in the mechanism, allowing efficient solution of dynamics problems at interactive rates.
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