Motor speed precise control circuit

Circuit working principle : In order to avoid the stretching and deformation of the wire, this control circuit can achieve
soft start and accelerate the motor to the operating speed within the L cycle. And use this speed
to complete most of the winding in the T2 cycle; the motor decelerates smoothly to a low speed in the T3 cycle
to prevent the towed material from accumulating at the traction end; the motor in the T4 cycle operates at a low speed to
accurately brake when the traction material is wound to a certain length (Figure b).