Stepping motor control system

Details Stepping motor control system Stepping motor control system

1986-04-16

1987-09-01

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 318567, H02P 800

Patent

active

046911545

ABSTRACT:
It takes a comparatively long time for a rotor of a stepping motor to be positioned at the next target stop position (target angular position) and stopped there. This time is the settling time. Before the rotor passes through the next target angular position and begins to oscillate, necessary control is provided to reduce the magnitude of the oscillation for the purpose of shortening the settling time. The phase excitation on each winding of the stepping motor is usually changed over successively until the target angular position is reached. When the stepping motor has approached the target angular position, the changeover of phase excitation is gradually conducted. As a result, the magnitude of the above described oscillation is reduced and hence the settling time is shortened.

REFERENCES:
patent: 4600868 (1986-07-01), Bryant

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