Ebm-papst St. Georgen Gmbh & Co Kg

Papst-motoren Gmbh & Co Kg

J&ouml;rg Hornberger

Arno Karwath

Hermann Rappenecker

Frank Jeske

Thomas Dufner

Hansj&ouml;rg Kaltenbrunner

An arrangement having an electric motor ( ) has a microcontroller ( ) for influencing at least one motor function and a nonvolatile storage element ( ) for storing at least one variable as a definition for that motor function. The arrangement also has an interface ( ) for a data line ( ) for transferring the at least one variable, in particular a current limiting value (I ) from or to a storage element ( ) by way of the microcontroller ( ), and optionally by way of an internal data bus ( ). The invention also relates to use of the device in the context of batteries of fans, and program-controlled current limitation for startup of an electric motor ( ).

Device with an electromotor

The rotation speed of an electric motor ( ) is controlled by a controller ( ) which receives its setpoint from a characteristic function ( ). The characteristic function ( ) calculates a setpoint for the controller ( ) on the basis of an originally analog variable A ( ) that is converted to digital by an A/D converter AD ( ), with the aid of support values of a &ldquo;MEM&plus;DATA&rdquo; characteristic that are stored in a memory ( ); those values not predefined by the support values are calculated by interpolation.

Arrangement with an electric motor

The invention concerns a method for nonvolatile storage of at least one operating data value of an electric motor ( ). The latter comprises a microprocessor or microcontroller ( ) that controls its commutation, and it comprises a nonvolatile memory ( ). In this method, when the motor ( ) is switched on, an old operating data value is transferred from the nonvolatile memory ( ) into a volatile memory ( ) associated with the microprocessor ( ) and saved there as a variable. The variable is updated by the microprocessor in the time intervals between the commutation operations (FIG. ). At intervals of time, the operating data value saved in the nonvolatile memory ( ) is replaced by the updated operating data value corresponding to the present value of the variable. A motor for carrying out this method is described.

Growing community of inventors

Dornstetten, Germany

Jörg Hornberger

Growing community of inventors

Dornstetten, Germany

J&ouml;rg Hornberger

Jörg Hornberger