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. 08, 1998
Filed:
Jan. 24, 1997
Applicant:
Inventor:
William F Ray, Nottingham, GB;
Assignee:
Switched Reluctance Drives Limited, Harrogate, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318569 ; 318685 ; 318696 ; 318254 ; 318138 ; 318439 ;
Abstract
A control system is provided for use with an actuator in a load-positioning assembly. The actuator and its load are quickly and accurately driven to a target position using dual control modes. When the distance from the target position is large, a speed control mode is used. In this mode, the actuator is operated according to a speed demand profile which is a function of a programmable maximum speed and the distance remaining to the target position. When the distance to the target position is small, a stepping mode is selected for final positioning of the actuator and its load.