Motor vehicles – Compensating devices
Patent
1987-10-27
1989-05-30
Marmor, Charles A.
Motor vehicles
Compensating devices
180142, 180148, B62D 504
Patent
active
048342025
ABSTRACT:
A motor-operated power steering apparatus of the rack-and-pinion type includes a motor control device having a motor driver circuit which generates a large amount of heat and which is spaced from other circuits such as a control circuit and sensors. The motor driver circuit, the control circuit, and the sensors are clustered around a pinion shaft. The power steering apparatus has high operation reliability free from heat susceptibility and small and compact in size. The power steering apparatus includes a pinion shaft, a rack shaft, a gear case supporting the pinion shaft and the rack shaft, an electric motor for generating assistive power, a torque detector for detecting steering torque, and a motor control device including a control circuit and a driver circuit. The control circuit and the driver circuit are separated from each other, the torque detector and the control circuit being disposed within the gear case in the vicinity of the pinion shaft and on one side of a plane passing through the rack shaft in crossing relation to the pinion shaft, the driver circuit being disposed on the gear case on the other side of the plane.
REFERENCES:
patent: 4735271 (1988-04-01), Shimizu
patent: 4771843 (1988-09-01), Shimizu
Honda Giken Kogyo Kabushiki Kaisha
Marmor Charles A.
McGiehan Donn
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