DocID018733 Rev 4

3/11

TN0516

Motor control library features

11

1

Motor control library features

•

Single or simultaneous Dual PMSM FOC sensorless / sensored (Dual PMSM FOC only

when running on STM32F103xx High-Density, STM32F103xx XL-Density or

STM32F2xx or STM32F303xB/C or STM32F4xx)

•

Speed feedback:

–

Sensorless (High Frequency Injection HFI plus B-EMF State Observer, PLL rotor

speed/angle computation from B-EMF, only for STM32F30x or STM32F4xx)

–

Sensorless (B-EMF State Observer, PLL rotor speed/angle computation from

B-EMF)

–

Sensorless (B-EMF State Observer, CORDIC rotor angle computation from

B-EMF)

–

60° or 120° displaced Hall sensors decoding, rising/falling edge responsiveness

–

Quadrature incremental encoder

–

For each motor, dual simultaneous speed feedback processing

–

On-the-fly speed sensor switching capability

•

Current sampling methods:

–

Two ICS (only when running on STM32F103xx or STM32F2xx or STM32F4xx)

–

Single, common DC-link shunt resistor (ST patented)

–

Three-shunt resistors placed on the bottom of the three inverter legs (only when

running on STM32F103xx or STM32F2xx or STM32F302xB/C or STM32F30xB/C

or STM32F4xx)

•

Embedded analog features (STM32F30x only)

–

PGA (Programmable Gain Amplifiers) for current sensing: support for three-shunt

and single-shunt, internal and external gain

–

Comparators for over-current protection: support for three-shunt and single-shunt,

internal and external threshold

–

Comparators for over-voltage protection: support for motor phases short-circuiting

mode and free-wheeling mode, internal and external threshold

•

FOC hardware acceleration(STM32F30x only)

–

ADC queue of context (ST patented architecture) support

–

CCM (Core Coupled Memory) RAM support

–

Advanced Timer structures for single shunt (ST patented) support

•

Flux weakening algorithm to attain higher than rated motor speed (optional)

•

Feed-Forward, high performance current regulation algorithm (optional)

•

SVPWM generation:

–

Centered PWM pattern type

–

Adjustable PWM frequency

•

Torque control mode, speed control mode; on-the-fly switching capability

•

Brake strategies (optional):

–

Dissipative DC link brake resistor handling

–

Motor phases short-circuiting (with optional hardware over-current protection

disabling)