End of Line (EOL) e-motor test system

Scope of testing

  • Resistance measurement of winding resistances, temperature sensors, insulation resistance of the winding, contact resistance of the shield connections
  • HV testing
  • Determination of the resolver offset angle
  • Residual magnetism at the shaft end of the rotor
  • Idle values of the motor
  • Determination of the nonlinearity of the resolver
  • Electromagnetic force (EMF)
  • Total Harmonic Distortion (THD)
  • Speedripple of the motor speed
  • Structure-borne noise measurement
  • Determination of the friction losses
  • Etc.

Modern test concepts for various electro mobility components do not only require a deep understanding of the drive technology but also a high degree of automation to optimize the cycle time in a series production. Because of the high specimen performance, the mechanical setup requires a suitable construction. The focus of this EOL test station is on the fully automated test sequence which also includes the mechanical and electrical contacting. Flexible production uses are possible because of the fast and uncomplicated change of the contacting unit. The test sequence is defined and loaded by the recorded barcode on the work piece carrier. The collection and permanent storage of test data ensures the unrestricted reproducibility of measured values, even across systems.


Michael Betz

Michael Betz

Test & Automation

+49 8707 920-156


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