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:
Mar. 07, 1989
Filed:
Nov. 04, 1982
James S Sweeney, Jr, Laguna Beach, CA (US);
Unisen, Inc., Irvine, CA (US);
Abstract
A machine positioning apparatus and method are disclosed in which motor control values are established by causing intentional overshoot of the destination, and automatically reducing the motor control values each time an overshoot occurs. The system disclosed is a three stage system in which: (1) the first stage is a continuation motion relatively fast stage wherein the motor control values relate to the distance traveled; (2) the second stage is a much slower stage in which a series of interim targets are set, each of which is at a distance from current position which is a fraction of the remaining distance to destination, the motor control values during the second stage being motor duty cycle values; and (3) the third (final) stage is the slowest and involves setting a series of interim targets to be passed, each of which is substantially the current position, the motor control values during the third stage being motor duty cycle values.