UM0324 datasheet(18/105 Pages) STMICROELECTRONICS

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Getting started with the library

UM0324

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2.2.1

Library configuration file: 75x_MCconf.h

The purpose of this file is to declare the compiler conditional compilation keys that are used

throughout the entire library compilation process to:

●

Select which current measurement technique is actually in use (the choice is between

three shunt or ICS sensors, according to availability).

●

Select which speed/position sensor is actually performed (here the choice is between

tachometer and quadrature incremental encoder, according to availability).

●

Enable or disable the derivative action in the speed controller or in the current

controllers in accordance with expected performance and code size.

If this header file is not edited appropriately (no choice or undefined choice), you will receive

an error message when building the project. Note that you will not receive an error message

if the configuration described in this header file does not match the hardware that is actually

in use, or in case of wrong wiring.

More specifically:

●

#define ICS_SENSORS

To be uncommented when current sampling is done using isolated current sensors.

●

#define THREE_SHUNT

To be uncommented when current sampling is performed via three shunt resistors

(default).

●

#define ENCODER

To be uncommented when an incremental encoder is connected to the starter kit for

position sensing; in parallel, fill out MC_encoder_param.h (as explained in

Section 2.2.3);.

●

#define TACHO

To be uncommented when a tachogenerator is in use to detect rotor speed (default); in

parallel, fill out MC_tacho_prm.h (as explained in Section 2.2.4);.

●

#define Id_Iq_DIFFERENTIAL_TERM_ENABLED

To be uncommented when differential terms for torque and flux control loop regulation

(PID) are enabled;

●

#define SPEED_DIFFERENTIAL_TERM_ENABLED

To be uncommented when differential term for speed control loop regulation (PID) is

enabled.

Once these settings have been done, only the required blocks will be linked in the project;

this means that you do not need to exclude .c files from the build.

Caution:

When using shunt resistors for current measurement, ensure that the REP_RATE parameter

(in MC_Control_Param.h) is set properly (see Section 2.2.2 and Section A.2: Selecting

PWM frequency for 3 shunt resistor configuration on page 98 for details).

UM0324 Datasheet(PDF) 18 Page - STMicroelectronics

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