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:
Sep. 24, 2002
Filed:
Sep. 10, 1999
Siemens Aktiengesellschaft, Munich, DE;
Abstract
Control of machine tools and industrial robots is usually implemented in a cascade structure, having not only numerous advantages but also the fundamental disadvantage of lower dynamics in the response to set point in comparison with a single control loop. This disadvantage is compensated today by feed-forward control concepts which permit ideal tracking of the controlled variable without intervention by the controllers, apart from inaccuracies in modeling of the controlled system or disruptions. The enormous computation complexity of these precontrol methods in higher order systems has provided the motivation for the development of a cartesian path control concept which is described in the present invention. While retaining the cascade structure, path accuracy can be improved significantly in comparison with axial feed-forward concepts.