Method and system for measuring output torque of a motor

Details Method and system for measuring output torque of a motor Method and system for measuring output torque of a motor

1997-05-06

2000-06-06

Ip, Paul

Electricity: motive power systems

Limitation of motor load, current, torque or force

318430, 318490, H02K 1732

Patent

active

060722940

ABSTRACT:
Method for measuring the output torque of an asynchronous motor having a stator and a rotor comprising the steps of measuring the rotational frequency of the stator field of the motor, the rotational speed of the rotor, calculating a measurement value for the slip speed from the difference between the rotational speed of the rotor and rotational frequency of the stator field, and calculating a measurement value for the output torque form the slip speed and statistical performance characteristic values for the output torque intrinsic to the motor.

REFERENCES:
patent: Re32579 (1988-01-01), Harvey et al.
patent: 3593083 (1971-07-01), Blaschke
patent: 3648138 (1972-03-01), Kalis
patent: 3887855 (1975-06-01), Klimo
patent: 4491775 (1985-01-01), Harvey et al.
patent: 4659976 (1987-04-01), Johanson
patent: 4763058 (1988-08-01), Heining et al.
patent: 4833388 (1989-05-01), Dorner
patent: 4908624 (1990-12-01), Bernhardt
patent: 5509879 (1991-10-01), Watanabe

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