METHOD FOR MEASURING TOTAL VEHICLE STEERING PLAY Russian patent published in 2012 - IPC G01M17/06 

FIELD: transport.

SUBSTANCE: method for measuring total vehicle steering play includes registration of steering angle from the moment of driven wheels moving starts to one and another side. To measure steering wheel rotation angle web-camera with output to personal computer is used. Web-camera is fixed on steering wheel so that its optical axis coincides with steering wheel rotation axis. Steering wheel rotation angle is determined by rotation angle of visible image according to results of analysis of image sequence. To determine the moment when driven wheels moving starts the second web-camera synchronised with the first one is used. The second web-camera is fixed on disk of driven wheel so that its optical axis is parallel or perpendicular to wheel rotation axis while being horizontal. Moment when driven wheels moving starts is determined by start of visible image displacement according to results of analysis of image sequence. Total vehicle steering play is determined on personal computer based on simultaneous analysis of synchronised by time sequences of video seria from the first and the second web-cameras.

EFFECT: higher accuracy of total play measurement.

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