Method of feeding a single-phase stepping motor

Details Method of feeding a single-phase stepping motor Method of feeding a single-phase stepping motor

1995-02-28

1996-04-02

Sircus, Brian

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

368217, G05B 1940

Patent

active

055044085

ABSTRACT:
The method is designed to supply the motor with chopped voltage pulses of varying durations as a function of the load conditions and of the supply voltage. The chopped voltage pulse is composed of a plurality of partial pulses of predetermined durations T1, T2, and T3. The feeding circuit comprises a detector of a condition of extreme load defined by k1.multidot.T4<k2.multidot.T5, wherein k1 and k2 are constants, T4 is an interval separating T1 and T2, and T5 is an interval separating T2 and the first pulse T3.

REFERENCES:
patent: 4361410 (1982-11-01), Nakajima et al.
patent: 4542329 (1985-11-01), Tu Xuan
patent: 5166590 (1992-11-01), Tu et al.
patent: 5247235 (1993-09-01), Tu et al.
patent: 5294877 (1994-03-01), Cameron

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