SYSTEM UND VERFAHREN ZUR STEUERUNG DES EINEM SCHRITTMOTOR ZUGEFÜHRTEN STROMS

A system and method is disclosed for controlling the input electrical current to an infusion pump stepper motor based on predetermined torque requirements. The system can include a motor controller and a non-volatile memory containing expected load torque values throughout a pump cycle. Responsive t...

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Bibliographic Details
Main Authors BRUNDLE, ALAN, ALLEN, TIM, DAO, SON
Format Patent
LanguageGerman
Published 15.02.2011
Subjects
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY
ELECTRICITY
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
GENERATION
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
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Summary:A system and method is disclosed for controlling the input electrical current to an infusion pump stepper motor based on predetermined torque requirements. The system can include a motor controller and a non-volatile memory containing expected load torque values throughout a pump cycle. Responsive to the expected load torque values, the motor controller provides the stepper motor with a varying electrical current for overcoming load torque at each point in the pumping cycle. Additional factors can also be considered for varying the electrical current. These factors include, but are not limited to, temperature, pressure, and elapsed operating time.
Bibliography:Application Number: AT20050724247T