Control system for a brushless motor

Details Control system for a brushless motor Control system for a brushless motor

1975-09-04

1977-09-27

Rubinson, Gene Z.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318341, H02K 2900

Patent

active

040514170

ABSTRACT:
In a control system for a brushless motor comprising a power source, a plurality of driving coils and contactless switching elements for intermittently supplying voltage across the power source to the driving coils in response to rotor position signals, rotor position signals are chopped by a chopping signal in which a ratio of a high level period to a low level period can be changed, and a portion of the contactless switching elements is driven by the chopped rotor position signals, thereby controlling the rotating speed of the brushless motor.

REFERENCES:
patent: 3639818 (1972-02-01), Wiart
patent: 3678358 (1972-07-01), Kolatorowicz
patent: 3688169 (1972-08-01), Yamaya et al.
patent: 3746941 (1973-07-01), Ageey et al.

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