Methods and apparatus for monitoring a brushed permanent...

Details Methods and apparatus for monitoring a brushed permanent... Methods and apparatus for monitoring a brushed permanent...

2007-01-23

2007-01-23

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Terminal voltage or counter-electromotive force of...

C318S568110, C318S248000, C388S928100

Reexamination Certificate

active

11356473

ABSTRACT:
Techniques sense a back-emf voltage from a brushed permanent magnet motor. Such techniques can be used for a variety of purposes, such as to estimate the current that is being applied to the motor, to estimate the motor's velocity, position, torque, and the like. One aspect of the invention includes the deactivation of power applied to the motor, and the monitoring of the back-emf of the voltage while power is not applied.

REFERENCES:
patent: 4266168 (1981-05-01), Andersen
patent: 4893067 (1990-01-01), Bhagwat et al.
patent: 4965848 (1990-10-01), Vasconi et al.
patent: 5811946 (1998-09-01), Mullin et al.
patent: 5990643 (1999-11-01), Holling et al.
patent: 6040671 (2000-03-01), Brito et al.
patent: 6100656 (2000-08-01), El-Sadi et al.
patent: 6144198 (2000-11-01), Howard et al.
patent: 6184645 (2001-02-01), Brito et al.
patent: 6204629 (2001-03-01), Rote et al.
patent: 6246193 (2001-06-01), Dister
patent: 2003/0141836 (2003-07-01), Brito
Stephen J. Chapman. “Electric Machinery Fundamentals”, third edition, McGraw-Hill, 1999, p. 36 shows an equation (1-47) for calculating a motor current from applied voltage and back emf.
Fishbane et al. “Physics for Scientist and Engineers”, second edition, vol. 1, Prentice Hall, 1996. p. 237, equations (9-2) and (9-3) show the relationship between angular velocity and angular position of a rotating rigid body.

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