Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1980-12-08
1983-08-30
Truhe, J. V.
Electricity: motive power systems
Open-loop stepping motor control systems
318685, 318103, H02K 3700
Patent
active
044019319
ABSTRACT:
In apparatus which uses a plurality of stepper motors for the actuation of various moving members therein, e.g., impact printer apparatus, an expedient is provided wherein at least one pair of stepper motors which operate during mutually exclusive periods share common driver means which are switchable to be connected to the active stepper motor and disconnected from the dormant one. When thus connected to the active stepper motor, the driver means operate in the conventional manner to couple the windings of the active stepper motor to the particular current supply associated with that active motor in a predetermined sequence so that each winding of the active motor is energized during portions of the sequence and deenergized during other portions. The apparatus further includes switching means for selectively connecting and disconnecting the drive means to the first and second stepper motors in accordance with the requirements of the apparatus driven by said stepper motors.
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Kulterman Robert W.
Rakes James M.
Sweat, Jr. Robert H.
Bergmann Saul M.
International Business Machines - Corporation
Kraft J. B.
Truhe J. V.
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