E-Powertrain EOL e-motor

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End Of Line for testing the behavior of brushless motors.
The motors pass 6 different test stations on workpiece carriers transported by a belt system.

BEMF station: Measuring and evaluating the electrical properties of the motors (hall-, optosensors, winding properties).

Run-in station: Burn-in test to spread the grease inside the bearings in order to achieve more stable running and easier start. Another goal is to face the motor with heavier conditions.

Vibration station: Measures the motor vibrations under real conditions (analysis software in collaboration with the University of Ljubljana).

Imbalance station: Measures the imbalance of the motors under real conditions (collaboration with an external imbalance specialist) .

Torque station: Measures the torque of the motors while stressing them with an eddy current brake.

Run-out station: Measures the concentric of the motors relative to the center of rotation via Keyence 2D-Micrometer.

Highlights  

  • Near real time data recording: (National Instruments / Beckhoff)
  • Integration of external analysis software
  • Mechanical decoupling of sensitive measuring stations by special damping materials
  • Modular design of the stations
  • Own designed sinus generator with amplifier
  • Cables with individual wire shielding (decoupling of signals)
  • High-precision measurement hardware (acceleration sensor for vibration measurements, 2D-Micrometer for measuring concentricity)
  • Integration of several driver boards

Technical data  

  • Cycle time ~ 16 sec
  • ESD conform construction