Method and apparatus for using back EMF to control a motor

Details Method and apparatus for using back EMF to control a motor Method and apparatus for using back EMF to control a motor

1998-07-15

1999-08-10

Shoop, Jr., William M.

Electricity: motive power systems

Limitation of motor load, current, torque or force

H02P 750

Patent

active

059363657

ABSTRACT:
A circuit to control a motor having phase inputs. A respective control signal for each phase input of the motor is generated such that each phase input is cyclically driven and undriven. Additionally, changes at each phase input relative to a reference potential are measured, and changes at each phase input during time intervals in which noise is expected are ignored: timing information based on the measured changes at the phase inputs is generated, and timing information to carry out the step of generating a respective control signal is used.

REFERENCES:
patent: 5223771 (1993-06-01), Chari
patent: 5808440 (1998-09-01), Bennett et al.

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