Rod antenna control system for automobiles

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...

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388920, 318650, 318468, H02P 506

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active

049500910

ABSTRACT:
A rod antenna control system for automobiles wherein electric current is supplied continuously to a motor which pushes up an antenna motor when a current below a predetermined value is flowing to the motor, and the current is supplied intermittently to the motor when a current above a predetermined value flows to the motor, and whether or not the electric current is over or below the predetermined value is determined by integrating the motor current for certain period of time and comparing such integrated value to the predetermined value.

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