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.

Date of Patent:
Mar. 10, 1998

Filed:

Jun. 07, 1995
Applicant:
Inventors:

Ashok Singh, Chicago, IL (US);

Robert Massey, Paddock Lake, WI (US);

Olof Stark, Ystad, SE;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
53 52 ; 53 55 ; 53 64 ; 53249 ;
Abstract

A servomotor driven machine under control of a control system which compensates for the slip and other errors associated with indirectly driving a movable component of the machine with a servomotor is set forth. The control system includes a servomotor that is connected through an intermediate drive mechanism to drive the movable component from a start position to an end position. A sensing system is disposed on the apparatus for generating an output signal indicative of at least one motion characteristic of the movable component. A controller drives the servomotor in accordance with a predetermined motion profile. The predetermined motion profile defines the motion characteristics of the movable component as the movable component moves from the start position to the end position within a predetermined time frame. The controller is responsive to the output signal of the sensing system to compensate for movement errors caused by the intermediate drive mechanism by deviating from the predetermined motion profile.


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