Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1995-06-07
1998-09-22
Martin, David S.
Electricity: motive power systems
Switched reluctance motor commutation control
388811, 388901, 3889281, H01K 2300
Patent
active
058119469
ABSTRACT:
A system and method is disclosed for feedback velocity control of a D.C. motor. The system includes a motor (30) which is represented by its circuit equivalent--a series combination of an inductance (32), a resistor (34) and a back EMF source (36). The drive to the motor (30), supplied by a controller, is periodically inhibited by timing logic (22) and AND gate (20). Once the inductive transient decays via clamping diode (38) such that the motor current is zero, switch (40) is closed and the internally generated motor voltage is sampled by a capacitor (42). A/D converter (44) transforms the sampled value to a digital value and sends it to the controller. The controller compares it to a predetermined desired value then makes the necessary adjustments to the drive signal.
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Bader Clifford J.
Mullin Eugene T.
Lockheed Martin Corporation
Martin David S.
Ratner Allan
Smith Harry F.
Weinstein Stanton D.
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