Disturbing method for soloing LLS equation when non-constant spin torque is considered

The LLS equation is analyzed by Melnikov disturbing method when non-constant spin torque is considered. Computing codes are programmed by combining VC and MATLAB. The results reveal that the magnetization trace vibrates round the non-disturbing trace at first，and then surges when close to the reversal point，and the time of reversal is shorter compared with the trace with constant spin torque.