Servo motor controller using position interpolation

Details Servo motor controller using position interpolation Servo motor controller using position interpolation

1997-08-25

2000-04-18

Martin, David

Electricity: motive power systems

Switched reluctance motor commutation control

318439, 318603, 318626, H02K 2300

Patent

active

060519436

ABSTRACT:
A motor control system employing a single Hall sensor 2 providing a position feedback signal to a control circuit 10 is disclosed. The control circuit includes a tach counter circuit 12, a ramp mode circuit 14, an interpolation circuit 16, and a commutation logic circuit 18. Drive signals are output to the motor windings by the commutation logic circuit 18. The control state defining the drive signals is advanced on the basis of the estimated rotor position. The estimate of the rotor position is determined by linearly interpolating between Hall signal transitions.

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