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Electric Drive System End-of-Line Quality Test - Abnormal Parts

  • Test Object:

    NEV Electric Drive Systems

  • Application Scenario:

    End-of-Line Quality Test

  • Challenges:

    • The test vehicle was functioning abnormally, which "acceleration beyond a certain speed range would result in a rapidly intensifying noise that tapers off just as rapidly".
    • The traditional method of testing at a few fixed RPMs could easily lead to the missed detection of these abnormal parts.

  • Method of Evaluation:

    SigMA supports real-time data acquisition and analysis under dynamic conditions (Figure 1). The above abnormal parts can be easily identified using Order Tracking (see order cut in Figure 2).

Figure 1: EOL quality test is being conducted on the electric drive system using SigMA
Figure 1: EOL quality test is being conducted on the electric drive system using SigMA
Figure 2: The different trends of abnormal parts vs normal parts as displayed in the order cut
Figure 2: The different trends of abnormal parts vs normal parts as displayed in the order cut

Related application cases

Synovate provides reliability, quality and health test solutions based on machine hearing technology for product whole lifecycle management