Stepping motor exciting system

Details Stepping motor exciting system Stepping motor exciting system

1982-12-03

1984-10-16

Truhe, J. V.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02K 2904

Patent

active

044777566

ABSTRACT:
A stepping motor exciting system in which the excitation current is set at one of four stepwise values. When the motor is to be driven in a stepwise manner, the excitation current is in the form of a pseudo-trapezoidal wave which is derived in terms of two of possible four values. When the motor is to be driven in a linear manner, the excitation current is in the form of a pseudo-sinusoidal wave which is derived in terms of all four possible values. A ROM stores these sequences of excitation currents and controls the exciting system in accordance with the driving mode desired.

REFERENCES:
patent: 3909693 (1975-09-01), Yoshitake et al.
patent: 4151449 (1979-04-01), Takahashi

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