1997-02-24

Field Measurement of Suspension Parameters Using Strain Measurement Techniques as Applied to Two Wheeler 970095

This paper discusses the approach to acquire base data regarding suspension travel, spring force, damping force and velocity which are essential for the design of suspension system and chassis. Strain measurement technique was used to obtain the data.Strain gauge locations were decided based on the sensitivity to spring and damping force. Methods used to calibrate the system and validate the technique are described.Data acquisition on different types of public roads and the behaviour of the parameters on these roads are elaborated. Displacement derived from acceleration signal at the wheel and suspension top mounting point, gave good correlation with the displacement derived from strain signals on different roads. Damping velocity (derived from displacement) and the damping force showed good proportionality on various roads. This technique was used successfully to establish the suspension parameters.

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