In this paper,the electromagnetic force model of the motor is established based on the mutual inductance gradient of the coil.By analyzing the relationship between the electromagnetic force, electromagnetic gap and d-q axis current,a decoupling control method of traction-and-guidance in bilateral air-core linear synchronous motor is proposed.This method realizes the independence of motor lateral movement and traction movement.Its effectiveness is verified by simulation, which provides a method and idea for the guidance control of the motor under ultra-high speed operation and other industrial applications.

Bilateral air-core linear synchronous motor， mutual inductance gradient， decoupling of traction and guidance， ultra-high-speed maglev.