Detail eines miniHIL Testaufbaus

HIL test for sensorless motor controls (single and dual shunt)

Tests for Motor Control Software

With the miniHIL it is possible to test your motor control software controlling a sensorless BLDC motor directly at your desk. The miniHIL closes the control loop (closed-loop) by simulating both the motor and all required sensor signals. It supports both single and dual shunt control.

Was ist der Nutzen?

The advantages at a glance:

  • Testing of application software directly on the desktop (also in the home office).
  • Testing of application software without driver adaptations for the test setup ⇒ the same software is tested that ends up in the product, no separate test software.
  • Achieving operating conditions that can otherwise only be achieved with real engine.
  • Simulation of fault conditions in the engine that can only be brought about by damage with a real engine.
  • Reproducible test runs incl. fault injection (very difficult to achieve with a real motor). For example, load changes, short circuits, and much more.

Model-based development and testing with the miniHIL

Online seminar: Drive control with the microcontroller

here missing picture and link to the YouTube video

Measurement of the PWM signals generated by the device-under-test (top left) → Simulation of the motor currents by the miniHIL (bottom right) → Simulation of the sensor signal by the miniHIL (here exemplarily the voltage measurable at the single shunt) (bottom left).

Motor and sensor simulation

  • Simulation of the motor (code generated from Matlab/Simulink model)
  • Input: Motor PWMs
  • Output: 3 phase currents
  • Simulation of shunt voltage
  • PWM synchronous selection of voltages visible at the shunt
  • Speed: Previous test setups up to 25 kHz motor PWM

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