The simulation test of brushless dc motor

High-speed brushless dc motor simulation module has the following points, probably about five modules below
( 1) Motor voltage equation module, according to an article on the high-speed brushless dc motor system block diagram, the voltage equation can get the following modules

( 2) Commutation logic module of inverter in high speed brushless dc motor system in fortuneteller by detecting the rotor position control, the function of rotor position, cut with the electromotive force corresponding to the contrary, that is 120 & deg; S - electric conduction Angle, reason is available Low FUNCTION convenient commutation logic signal generation, we are given A photograph on the bridge arm in that program. （ In the program input variable & mu; For & theta; )
函数sys = mdlouyputs ( t, x, u)
P=π
If rem( u,2*9)


SYS=0
elseif rem( u, 2 * p)
其他Sys = 1

眼睛= 0

( 3) Electromagnetic torque module, a trapezoidal wave back emf and the square wave current, motor electromagnetic torque module available

( 4) Mechanical motion equation of the module by Te - rotor motion equation Tl = J DWM/dt
type of Tl = load torque; Moment of inertia of J =
available mechanical motion equation module

( 5) BLDCM control system module of BLDCM control system adopts double loop control, divided into speed ring ( Outer ring) And the current loop ( The inner ring) 。 Cyclization in outer ring adopts PI algorithm, guarantee system for the floating system, and has good dynamic and static characteristics