The control module electric motor (CMEM) provides several controllers for use with an electric motor. The control output is a target torque signal sent to the test bench drive or DUT.

You typically run this module in a main test. The available modules are CMEM_A, CMEM_B, CMEM_C, and CMEM_D. This section uses the PTC2EM module as an example.

Figure 37. CMEM_A Module Overview


Features

The CMEM module includes the following features.

  • Speed controller:
    • Feed-forward-control input
    • Input for target speed and target speed offset
    • Optional inertia feed-forward-control
  • Torque controller:
    • Feed-forward-control input
    • Input for target torque and target torque offset
    • Optional speed limiting function
  • Speed controller 2:
    • Model based state feedback controller (SFC) for back-to-back setups (two-mass-spring-damper)
  • Angle controller
  • Standstill controller
  • Target torque output (no controller active)
  • Controller output limitation using upper/lower limits and field weakening effect