Motor-driven power steering control apparatus

Details Motor-driven power steering control apparatus Motor-driven power steering control apparatus

1989-08-28

1990-12-11

Chin, Gary

Boots, shoes, and leggings

180 791, 180142, B62D 504

Patent

active

049775073

ABSTRACT:
The motor-driven power steering control apparatus of the invention detects overload of a motor according to the calculation of coil resistance and temperature detection based thereon. The coil resistance is calculated according to terminal voltage or effective voltage based on duty ratio, and counter-electromotive force, and the driving current. Thereby overload of the motor can be detected without delay.

REFERENCES:
patent: 4467260 (1984-08-01), Mallick, Jr. et al.
patent: 4754828 (1988-07-01), Morishita et al.
patent: 4771843 (1988-09-01), Shimizu
patent: 4771845 (1988-09-01), Shimizu
patent: 4789040 (1988-12-01), Morishita et al.

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