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Verfahren zum Steuern eines Gleichstromantriebs

Control of DC door drive e.g. for garages and also for sliding roofs - has angular speed and armature current measured to determine load torque, which is then compared with given value.
 
: Grinewitschus, V.; Raffel, D.

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Frontpage ()

DE 1996-19601359 A: 19960116
DE 1996-19601359 A: 19960116
EP 1996-944665 A: 19961227
EP 1996-944665 AW: 19961227
WO 1996-EP5850 A: 19961227
DE 19601359 A1: 19970717
EP 857368 B1: 19990203
H02H0007
German
Patent, Electronic Publication
Fraunhofer IMS ()

Abstract
To control a DC drive, the following steps are used. First, two parameters are measured. Then the load or resistance torque is determined from these parameters. The latter is compared with a given value and an abnormal situation is established if the actual torque exceeds the given torque. The parameters are the angular velocity and the armature current. Other factors used are the moment of inertia of the load and the motor constant. The moment of inertia of the load is found by a learning process and is stored. If an abnormal situation is established, the drive is switched off or reversed. ADVANTAGE - Reliable detection of disturbances with low limiting values.

: http://publica.fraunhofer.de/documents/PX-38944.html