EEJA

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No contact balancing and diagnostics system for vehicles
  • Vibration measurement at the vehicle
  • No contact measurement method using laser technology
  • Vibro-acoustic diagnostics
  • Evaluation of the unbalance of the drive train
  • Evaluation of the unbalance calculation
  • Possible to retrofit into roll test beds

Measuring principle design

The measurement uses the principle of non-contact vibration recording, using a laser vibrometer. Additionally, a speed or angle measurement is carried out by scanning a reference mark on a rotating part, e.g. the cardan shaft. Contactless measurement by laser allows vibrations to be recorded in parallel to other test procedures without any prior adjustment of the measurement sensors on the vehicle. The laser measurement head is mounted on an X-Y table on the rolling test bed, allowing different measurement positions to be accessed. By measuring the vehicle position, the measuring head follows the sideways movements of the vehicle. The connection to the rolling test bed controller enables the integration of the measurement procedure.

Design