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AN2281 Datasheet(PDF) 31 Page - STMicroelectronics |
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AN2281 Datasheet(HTML) 31 Page - STMicroelectronics |
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31 / 38 page ![]() AN2281 List of software functions and interrupt service routines 31/38 Appendix A List of software functions and interrupt service routines My_functions.c Module Set_Spinning_Direction Soft_Start DoRotorAlignment DoMotorControl Description: This function allows you to set the rotation direction of the motor before the start-up procedure Input: Value CW or CCW ("direction" type has been defined in My_functions.h header file) Returns: None Caution: This function must be called when the motor is stopped, before the start-up procedure. Calling the function while the motor is running could cause damage to the motor. Description: This function carries out a soft motor start up by performing a linear increase of the three-phase sinusoidal voltage. Input: None Returns: None See also:: Start-up procedure description in Section 5.2 Note: start_up_on_going variable is equal to 1 if soft start is on-going, 0 if it is over. Description: This function performs the rotor alignment by exciting the motor phase W (see Figure 9) and keeping the other two at ground Input: None Returns: None Caution: The function is compiled only if rotor alignment phase is enabled Duration: ~ ALIGNMENT_DURATION. See also:: Start-up procedure description in Section 5.2 Description: This function performs a closed loop speed control. It utilizes a PI (proportional and integral) regulation algorithm to determine the most appropriate voltage value to get the expected rotor speed. |
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