Summary -st2.0 Hall angle estimation

1、 First define a relational equation , It's easy to understand by looking at the software

F1 representative FOC Frequency of execution （PWM Period frequency ）, The unit is HZ;

△A Representing one PWM Hall angle change during the period ;

AC Represents the angle variation range of an electrical angle period ;

F2 Represents the operating frequency of the motor , Company HZ;

The formula ：F1*△A=AC*F2

The basic formula ：f Motor operating frequency ,P Polar logarithm

2、 Calculation in Library

CKTIM-- Clock frequency of hall timer

SAMPLING_FREQ---FOC Frequency of execution

PeriodMeasAux.wPeriod-- The change time of a single Hall sector ;

The first calculation is △A Representing one PWM Hall angle change during the period ; At the calculated motor speed RPM