Stepper motor driver circuit

Details Stepper motor driver circuit Stepper motor driver circuit

1992-03-12

1993-11-23

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02P 800

Patent

active

052647706

ABSTRACT:
Applying current to a pair of stepper motor windings on alternating phases of a common drive clock reduces cross-noise in the opposing winding due to current switching which could otherwise cause false triggering of the phase current drivers.
The positional accuracy of the motor is controlled by the selective removal of the current supplied to each motor winding. The falling phase current in one winding is precisely regulated by the time constant determined from the rising phase current phase in the other winding.
Closely monitoring and controlling the phase currents in each motor winding efficiently reduces motor resonance due to self-generation.

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patent: 4319174 (1982-03-01), Cook et al.
patent: 4415845 (1983-11-01), Oudet
patent: 4476421 (1984-10-01), Moriguchi
patent: 4661756 (1987-04-01), Murphy et al.
patent: 4703243 (1987-10-01), Ettelman et al.
patent: 4904917 (1990-02-01), Hakluytt
patent: 5032781 (1991-07-01), Kronenberg

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