Suspension control system for a motor vehicle

Details Suspension control system for a motor vehicle Suspension control system for a motor vehicle

1989-04-07

1990-12-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25023117, 280840, G01D 534

Patent

active

049788485

ABSTRACT:
An apparatus for adjusting height of a vehicle includes an incremental-type rotary encoder operated as a sensor for sensing the height of the vehicle. The incremental-type rotary encoder comprises a rotary disc having two sets of slits positioned at circumferential portions having different radii each other and different phase of 90.degree. in a rotating direction of the rotary disc. The incremental-type rotary encoder is further provided with a slit having a semi-circular shape disposed along a circumferential periphery thereof. A neutral position of an operation range of the rotary disc is determined as a boundary of the location of the semi-circular slit. The semi-circular slit is detected to discriminate whether height of the vehicle is above or below the neutral position of the rotary disc. A height adjusting mechanism is displaced in a vertical direction according to data from a detector. The apparatus controls the rotating direction and the amount of the rotation of the rotary disc.

REFERENCES:
patent: 3549897 (1970-12-01), Blake
patent: 4105216 (1978-08-01), Graham et al.
patent: 4580046 (1986-04-01), Sasaki et al.
patent: 4700062 (1987-10-01), Ernst
patent: 4822063 (1989-04-01), Yopp et al.

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