Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1990-12-07
1992-10-13
Shoop, Jr., William M.
Electricity: motive power systems
Open-loop stepping motor control systems
H02P 800
Patent
active
051554275
ABSTRACT:
A drive controller of the N-phase stepping motor includes a signal generator for generating M pulse signals at such an interval that the stepping motor can be driven in response to the pulse signals so as to rotate the stepping motor through an M step angle in one direction, and a driver for determining an exciting phase which is one step ahead of the current exciting phase as a next exciting phase in response to the pulse signal generated from the signal generator and exciting the stepping motor set in the thus determined exciting phase. In the drive controller, the signal generator generates pulse signals as a pulse signal group at such an interval that the stepping motor cannot respond to the pulse signals and repeatedly generates the pulse signal group by M times at such an interval that the stepping motor can be driven in response thereto so as to rotate the stepping motor in a reverse direction.
REFERENCES:
patent: 3112433 (1963-11-01), Fairbanks
patent: 4540927 (1985-09-01), Tanimoto
patent: 4703244 (1987-10-01), Takeuchi et al.
patent: 4746849 (1988-05-01), Rosshirt
"Stepping Motors" Kenjo pp. 123, 124 Clarendon Press, Oxford 1984.
"Digital Fundamentals" Floyd pp. 260-264, Bell & Howell Company 1982.
2421 Radio Fernsehen Elektronik 37 (1988) No. 10, Berlin, DDR.
Shoop Jr. William M.
Tokyo Electric Co. Ltd.
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