ST reveals embedded software for sensorless zero-speed/high-torque motor control
Summary
The algorithm, now being shared with selected customers, provides this control for the first time in a general-purpose drive, enabling previously unachievable smoothness and predictability. The new STM32 ZeST software algorithm is a general-purpose solution that allows optimum sensorless control at zero speed for any kind of permanent magnet synchronous motor (PMSM). Using the STM32 ZeST and HSO software algorithms, designers can improve the energy efficiency of their applications by avoiding high peak current during start-up phases. ST is also able to provide extensive additional support to develop drives for popular motor types to satisfy diverse applications and meet constraints such as energy efficiency, size, performance, and cost. The STM32 microcontroller family covers a broad performance spectrum and many of the devices integrate applicable features such as ST’s advanced motor-control PWM timer.