Control system for electric motor

The motor control system for an electric motor having no mechanical means integral therewith for commutating current provides the ability to control position, velocity and torque of such a motor to the degree achievable with DC motors having mechanical commutators. Such a result is achieved by maint...

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Bibliographic Details
Main Author JONES; DONALD H
Format Patent
LanguageEnglish
Published 10.09.1985
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
ELECTRICITY
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
GENERATION
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
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Summary:The motor control system for an electric motor having no mechanical means integral therewith for commutating current provides the ability to control position, velocity and torque of such a motor to the degree achievable with DC motors having mechanical commutators. Such a result is achieved by maintaining a desired spatial relationship between the resultant magnetic field created by the stationary member and the movable member of the electric motor. The control system includes detecting apparatus for detecting parameters of the motor that dictate, in part, the desired spatial relationship within the motor and command apparatus for creating a motor command signal which, when generated in the motor, causes the desired spatial relationship to be established. The present invention also permits maintenance of an optimal spatial relation-a spatial relationship that causes the motor to produce desired torque with a minimum excitation.
Bibliography:Application Number: US19840632315