Patent · US Active

Method and circuit assembly for driving a stepper motor

US9621086B2 · kind B2 · utility

0Cited by

20References

11Claims

0Family size

Assignee

TRINAMIC MOTION CONTROL GMBH & CO. KG · DE

Inventors

Lars Larsson · Hamburg, DE
Bernhard Dwersteg · Hamburg, DE

Key dates

Filing date	Jun 20, 2013
Grant date	Apr 11, 2017
Priority date	—
Expiry date	Jun 20, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH02P8/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and a circuit assembly for driving a 2-, 3- or more phase stepper motor by predetermined courses of current curves, especially for a microstep operation, is disclosed. For minimizing the memory capacity needed for storing supporting points of the course of the current curve by which the microsteps are realized, the course of the current curve is divided into a number of segments to which each a basic or main gradient between adjacent supporting points is assigned, so that for each of the supporting points only a deviation of the gradient at this supporting point from the related basic or main gradient has to be stored.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.