Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1976-11-17
1981-03-10
Truhe, J. V.
Electricity: motive power systems
Open-loop stepping motor control systems
318138, 318254, 310 49R, G05B 1940
Patent
active
042556961
ABSTRACT:
A stepping motor with toothed stator poles and two sets of oppositely magnetized rotor teeth has its stator poles energized by a driver which responds to input pulses to successively deenergize alternate poles and keep them deenergized and then successively reenergize the alternate poles in the opposite direction. Thereafter the driver successively deenergizes the poles intermediate the alternate poles and keeps them deenergized until all intermediate poles are deenergized and then successively reenergizes the intermediate poles in the other direction until all the intermediate poles are reenergized. This drives the rotor in fractional steps. For larger fractional steps, larger numbers of poles are deenergized in response to each pulse. For even larger fractions the deenergization process is eliminated.
REFERENCES:
patent: 3344325 (1967-09-01), Sklaroff
patent: 3453510 (1969-07-01), Kreuter et al.
patent: 3466520 (1969-09-01), Aylicki et al.
patent: 3809990 (1974-05-01), Kuo et al.
patent: 3842332 (1974-10-01), Heine et al.
patent: 4000452 (1976-12-01), Heine
patent: 4044291 (1977-08-01), Hughes et al.
Indyk Eugene S.
Sigma Instruments Inc.
Truhe J. V.
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