Method and apparatus for controlling a stepper motor with a prog

Details Method and apparatus for controlling a stepper motor with a prog Method and apparatus for controlling a stepper motor with a prog

1986-09-30

1987-12-22

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02P 800

Patent

active

047148675

ABSTRACT:
A stepper motor is accelerated and decelerated with a parabolic velocity profile to efficiently utilize the available torque of the motor. The times between pulses to obtain a parabolic velocity profile are determined by a microprocessor-based stepper motor controller from desired values of start/stop velocity, maximum velocity and time to reach maximum velocity. The required times are stored in a random access memory and are used to supply to the motor a pulse train which follows the parabolic velocity profile during acceleration and deceleration. The controller is easily programmable to accommodate different motor characteristics, different applications and different operating parameters.

REFERENCES:
patent: 4156170 (1979-05-01), Strunc
patent: 4417188 (1983-11-01), Makabe et al.
patent: 4496891 (1985-01-01), Kobayashi
patent: 4496892 (1985-01-01), Bugatto, Jr.
patent: 4558643 (1985-12-01), Arima et al.
patent: 4568866 (1986-02-01), Floro et al.
Kuo, Step Motors and Control Systems, SRL Publishing Co., 1979, pp. 135-143, 290-304, 391-402.

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