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:
Dec. 11, 1990
Filed:
May. 10, 1988
Gerhard Jost, Muehltal, DE;
Hans Werner, Darmstadt, DE;
Carl Schenck AG, Darmstadt, DE;
Abstract
In a method and system for controlling a differential dosing scale having a weighing device and a control for the delivery rate especially of loose bulk material achieved by comparison of rated and actual weight values, measures are taken to eliminate the effects of disturbances of the output signal of the weighing device. Improvements are achieved in that an estimated or predicted value (G) for the next measured weight value is derived from previously measured values (G.sub.i) of the output signal (G) of the weighing device. The predicted value (G) is compared with the next actual measured value (G.sub.i) to determine a difference. If this difference exceeds a prescribed tolerance range or value, the control of the delivery rate continues at the unchanged previous actual value (P) of the delivery rate. Thus, the effects of disturbances are greatly reduced or even completely eliminated. Changes in the rated value of the delivery rate can also be taken into account. A differential dosing scale for carrying out the method includes appropriate hardware components or software for achieving the described control.