Measurements of Path and Other Parameters in Motor Vehicle Dynamics Tests and Their Errors

SUMMARY

This paper discusses two equipment layouts for measuring path data, vehicle sideslip angles and tire slip angles by using a gyrosystem, a vehicle speed-measuring unit with contact or non-contact speed sensor(s), and a computer. Measurement errors are analyzed in detail. A method for eliminating the effect of vehicle roll on measurement is given. Some relations between measurement errors and instrument errors are derived using vector analysis. A practical and effective error correction method for vehicle path measurements is developed.