Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1986-07-22
1987-08-25
Shoop, Jr., William M.
Electricity: motive power systems
Open-loop stepping motor control systems
318685, H02P 800
Patent
active
046895418
ABSTRACT:
A method and apparatus are provided for simultaneously controlling a plurality of stepper motors. Addressing circuitry generates address data for each motor in a periodic address sequence. Memory circuits respond to the address data for each motor by accessing a corresponding memory location containing a first operational data set functionally related to a direction for moving the motor, speed data, and rate of speed change. First logic circuits respond to the first data set to generate a motor step command. Second logic circuits respond to the command from the first logic circuits to generate a third data set for replacing the first data set in memory with a current operational motor status, which becomes the first data set when the motor is next addressed.
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Jones David F.
Jones Rollin G.
Kortegaard Bert L.
Bergman Saul M.
Hightower Judson R.
Shoop Jr. William M.
The United States of America as represented by the United States
Wilson Ray G.
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