Linear motor position feedback controlling system and controlling method thereof

The invention relates to a linear motor position feedback controlling system and a controlling method thereof. The linear motor position feedback controlling system adopts the structure that a motion controlling card sends a motion signal to a servo amplifier; the servo amplifier receives the motion signal, simplifies the received signal and then drives a linear motor to operate; a position information acquisition unit feeds back the position data of the linear motor to the servo amplifier and the motion controlling card; the servo amplifier conducts position controlling on the linear motor according to the feedback position data; the motion controlling card sends the motion signal to the servo amplifier, and conducts torque controlling on the linear motor according to the feedback position data. The invention further discloses the controlling method of the linear motor position feedback controlling system. The position information acquisition unit is used for feeding back the position data to the lose-loop control of the motion controlling card; the linear motor position feedback controlling system and the controlling method are stable, reliable, and compact in structure; waste of the equipment structure space and the material cost is avoided.