Stepper motor logic circuit

Details Stepper motor logic circuit Stepper motor logic circuit

H - Electricity

02

P

318/20

H02P 8/00 (2006.01) H02P 8/40 (2006.01)

Patent

CA 1282822

ABSTRACT A stepper motor logic circuit for provid- ing stepper motor control signals to the drivers of a stepper motor. The stepper motor logic circuit receives progammable data from a CPU or manually- initiated back-up data for manually controlling the stepper motor. The logic circuit controls the stepper motor drivers in accordance with variable stepping rate data. Such data, as provided by the CPU, includes clock rate data and control data. The clock rate data written to the logic circuit determines the stepping rate; the control data determines the direction of stepper motor rotation, the step magnitude (full or half step), and the stop signal. Preferably, the logic circuit con- trols a pair of stepper motors independently of each other, by reading and storing separate clock rate and control data for each motor.

499915

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