ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,117, issued on Feb. 10, was assigned to Analog Devices International UnLtd. Co. (Limerick, Ireland).
"Stepper motor stall detection" was invented by Bernhard Karl-Heinz Dwersteg (Rellingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A new method and circuit arrangement for operating a stepper motor in a control loop. Load values associated with a mechanical load of a stepper motor in operation are filtered to generate stall detection values. A step value is determined based on the difference between two stall detection values. The step value is compared to a threshold, and the stepper motor is determined to be in a stall condition based ...