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August 2017 DocID023491 Rev 4 1/28
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AN4144
Application note
Voltage mode control operation and parameter optimization
Enrico Poli
Introduction
Voltage mode driving is the stepper motor driving method patented by STMicroelectronics
®
which improves the performance of classic control systems.
This driving method performs smoother operation and higher microstepping resolutions and
is the best solution for applications where high precision positioning and low mechanical
noise are mandatory.
This application note describes the operating principles of Voltage mode driving and the
strategies for the regulation of the control parameters in order to fit the application
requirements.
The application note also investigates and provides solutions to one of the most common
issues in Voltage mode driving systems: the resonances of the stepper motors.
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