Stepping motor control apparatus

Details Stepping motor control apparatus Stepping motor control apparatus

2006-04-04

2006-04-04

Masih, Karen (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

C318S696000, C318S700000, C318S701000, C318S714000, C318S720000, C318S723000

Reexamination Certificate

active

07023165

ABSTRACT:
A stepping motor control apparatus in accordance with the present invention comprises: a current detection unit that detects phase currents flowing into a stepping motor; an equivalent model-of-motor arithmetic unit that includes a coefficient multiplication block which performs multiplication using a coefficient ka′=Ts/τ as a multiplier, a coefficient multiplication block which performs multiplication using a coefficient kb′=τ/(Ts+τ) as a multiplier, and a coefficient multiplication block which performs multiplication using a coefficient kg′=I0/E0as a multiplier, and that calculates an estimated angle of excitation; a current control unit that controls an exciting current on the basis of the estimated angle of excitation, an angle command, and the phase currents detected by the current detection unit; and a variable voltage inverter that applies phase voltages to phase windings included in the stepping motor according to outputs of the current control unit.

REFERENCES:
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patent: 4242067 (1994-06-01), None
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patent: 2003-47293 (2003-02-01), None
Wang Panhai; XU Dianguo; Shi Jingzhuo; “Hybrid stepping motor position servo system with on-line trained fuzzy neural network controller” 28th Annual Conference of the Industrial Electronics Society, IEEE 2002, vol. 3, Nov. 2002 pp. 2137-2140, XP002338863.
Kefsi Laid; Xu Dianguo; Shi Jingzhuo; “Vector control of hybrid stepping motor position servo system using neural network control” The 27th Annual Conference of the IEEE Industrial Electronics Society, 2001. IECON '01. vol. 2, Nov. 2001, pp. 1504-1508, XP002338864.

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