Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1995-03-20
1998-07-28
Sircus, Brian
Electricity: motive power systems
Open-loop stepping motor control systems
318254, 318439, 318811, 388806, 388847, 3889281, H02K 2300
Patent
active
057866791
ABSTRACT:
A DC motor driven power steering system for a motor vehicle includes a motor current detection circuit for detecting a motor current flowing through the DC motor, a power supply voltage detection circuit for detecting a power supply voltage applied to the bridge commutation circuit, a motor voltage estimating unit for estimating a voltage applied across the DC motor on the basis of the power supply voltage applied to the bridge commutation circuit and the pulse-width modulated control signals used for controlling the bridge commutation circuit, and a motor rotation detecting means for detecting the rotation state of the DC motor on the basis of the motor current and the estimated motor voltage applied to the DC motor. High reliability can be ensured for detection of the rotation state of the DC motor.
REFERENCES:
patent: 4751438 (1988-06-01), Markunas
patent: 5081404 (1992-01-01), Kelley et al.
patent: 5150021 (1992-09-01), Kamono et al.
patent: 5202830 (1993-04-01), Tsurumiya et al.
patent: 5341453 (1994-08-01), Hill
patent: 5378975 (1995-01-01), Schweid et al.
patent: 5460235 (1995-10-01), Shimizu
Awa Hirohisa
Nishino Kazuhisa
Wada Shunichi
Mitsubishi Denki & Kabushiki Kaisha
Sircus Brian
LandOfFree
DC motor driven power steering system for a motor vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DC motor driven power steering system for a motor vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC motor driven power steering system for a motor vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-25617