elec_brushless_dc_motor.zip_As One_SIMULINK_brushless_brushless

This example shows how a system-level model of a brushless DC motor (i.e. a servomotor) can be constructed and parameterized based on datasheet information. The motor and driver are modeled as a single masked subsystem. If viewing the model in Simulink(R), the Motor and driver block, and type ctrl-U to look under the mask and see the model structure. In this example, the standard configuration is modeled whereby an inner feedback loop controls current and an outer feedback loop controls motor speed. Speed demand is set by the voltage presented at the Vref pin, 2V corresponding to 40,000rpm. Motor direction is controlled by the voltage presented at the V pin which is set to go high after one second. Braking is controlled by the voltage at the Vbrk pin which is set to go high after two seconds. Consult the documentation for further information on how the model is parameterized datasheet values.