Verification of Sensors for Yaw Rate and Lateral Acceleration in Car ESP System
Andrzej Gajek 1  
,   Wiesław Pieniążek 1  
,   Robert Janczur 1  
,   Stanisław Wolak 1  
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Institute of Automobile and Internal Combustion Engines, Cracow University of Technology, Polska
Wiesław Pieniążek   

Institute of Automobile and Internal Combustion Engines, Cracow University of Technology, Kraków, Polska
Submission date: 2020-05-26
Final revision date: 2020-06-23
Acceptance date: 2020-06-24
Publication date: 2020-06-30
The Archives of Automotive Engineering – Archiwum Motoryzacji 2020;88(2):61–67
This study analyzed the possibilities to validate the indications of sensors for yaw rate and lateral acceleration within the scope of extended diagnostic routine of the car ESP system at Vehicle Inspection Stations (SKP). The stand tests were performed using the reference sensors and a standard diagnostic tester. The comparison of the yaw rate and lateral acceleration results obtained from the working sensor under examination, recorded with the V box unit, and the results from the reference sensor demonstrated a good conformity both in quality and quantity. But these tests were demonstrated also a pure conformity (both in quality and quantity) with runs obtained from tester. The Root Mean Square (RMS) was used as factor of qualitative estimation. These inconveniences were caused from in sampling frequency incompatibility and lack of recording synchronization for signals from the tester and from reference sensors. The primary importance question is a firmware modification for selected testers. Such a tester should be able to record signals from a reference sensor and have a set sampling frequency for signals from a working sensor. On the basis of already carried out research analyses the suggested frequency should be no fewer than about of 10 Hz. It resulted from a spectral analysis carried out for possessed runs maintaining the Nyquist limit frequency.
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