Back-EMF method detects stepper-motor stall - Embedded.com

Back-EMF method detects stepper-motor stall

In “Back-EMF method detects stepper-motor stall ,” David Swanson and Radek Stejskal of STMicroelectronics describe how to use the company’s integrated L9942 stepper-motor driver for bipolar stepper motors on automotive-headlamp leveling.

They describe how to use the device’s programmable current-profile look-up table to adapt stepper-motor characteristics to the intended operating conditions.

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