Electric motor drive equipped with a permanently magnetized rotor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 4, 1987
Grant Date -
N/A
app pub date -
Jan 23, 1986
filing date -
Jan 29, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The motor (9) comprises a motor winding with two phases (2, 3). Sensor c detects the orientation of the permanently magnetized rotor. Selector (S) controlled by line (s) which can be connected to a memory (M) selects the sending to circuit (C) of clock pulses (H) or signals (G) coming from circuits (F) which receives the pulses emitted by sensor (c). In circuit (C) the signals received from the selector are processed and shaped into control signals which act in the power stage of circuit (P) upon each of the two phases (2, 3) by triggering and releasing them alternately in such a way as to ensure that the operation of the rotor occurs either in step mode, under the influence of the clock signals (H), or in direct current mode, i.e., as a function of the momentary position of the rotor as it is detected by sensor (c).
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