Method and apparatus for measuring vehicle wheel alignment

Details Method and apparatus for measuring vehicle wheel alignment Method and apparatus for measuring vehicle wheel alignment

1987-08-31

1989-09-05

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

3320315, 3320316, 3320317, 33288, 356150, G01B 1126, G01B 524

Patent

active

048632660

ABSTRACT:
An accurate and high-speed measurement of the vehicle wheel alignment is achieved by an optoelectronic, non-contact measurement system. This system includes photoelectric sensors for detecting the distance between a reference vertical plane and a tire side surface of each wheel, and a stepping motor for adjusting the position of the sensors to follow-up the displacement of the wheel in a direction parallel to the longitudinal axis of the vehicle. Operation of the stepping motor is controlled by a microcomputer on the basis of the updated distance data delivered from the sensor inputs. The microcomputer processes the input data to compute a toe-in or a camber of the wheel for the analog or digital display.

REFERENCES:
patent: 4443951 (1984-04-01), Elsasser et al.
patent: 4594789 (1986-06-01), Marino et al.
patent: 4745469 (1988-05-01), Waldecker et al.

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