METHOD FOR CONTROLLING AT LEAST ONE SERVOMOTOR IN A BRAKING MANNER, ROBOT, AND COMPUTER PROGRAM PRODUCT

A method for controlling at least one servomotor in a braking manner with a frequency converter includes disconnecting a direct-voltage intermediate circuit from an electric alternating-voltage network, braking the servomotor by controlling semiconductor switches of an inverter circuit in a regenera...

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Bibliographische Detailangaben
Hauptverfasser:	HOFMANN, Josef, KEYL, Hartmut
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	A method for controlling at least one servomotor in a braking manner with a frequency converter includes disconnecting a direct-voltage intermediate circuit from an electric alternating-voltage network, braking the servomotor by controlling semiconductor switches of an inverter circuit in a regenerative braking mode in order to reduce the speed of the servomotor, and controlling a brake chopper such that a brake resistor is switched on at a maximum intermediate-circuit voltage, which forms a switch-on threshold for the brake chopper, and is disconnected at a minimum intermediate-circuit voltage, which forms a switch-off threshold for the brake chopper. The switch-on threshold and/or the switch-off threshold are dynamically changed during regenerative braking of the servomotor as a function of the current speed of the servomotor.