Motor control apparatus

Details Motor control apparatus Motor control apparatus

2007-07-31

2007-07-31

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Limitation of motor load, current, torque or force

C318S286000, C318S469000, C049S028000

Reexamination Certificate

active

11387144

ABSTRACT:
A motor control apparatus includes a detection device for detecting a rotation speed of a motor, a storing section for successively storing the rotation speed detected by the detection device, a calculation device for calculating a variation amount of the rotation speed from current rotation speed which is output from the detection device and from past rotation speed stored in the storing section, a determining device for determining whether there is rotation abnormality of the motor based on a result of comparison between the variation amount calculated by the calculation device and a preset threshold value, and a control device for controlling the motor in accordance with a result of determination of the determining device. The calculation device calculates the variation amount from a sum of the current rotation speed and a rotation speed detected before predetermined times thereof, and a sum of the past rotation speed and a rotation speed detected before predetermined times thereof.

REFERENCES:
patent: 4585981 (1986-04-01), Zintler
patent: 5530329 (1996-06-01), Shigematsu et al.
patent: 5585705 (1996-12-01), Brieden
patent: 6070116 (2000-05-01), Pruessel et al.
patent: 6100658 (2000-08-01), Kume et al.
patent: 6183040 (2001-02-01), Imaizumi et al.
patent: 6274947 (2001-08-01), Terashima
patent: 6825623 (2004-11-01), Onozawa et al.
patent: 6933694 (2005-08-01), Caussat
patent: 6943515 (2005-09-01), Kidokoro
patent: 7170244 (2007-01-01), Choby
patent: 7-212963 (1995-08-01), None
patent: 3657671 (2005-03-01), None

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