Abstract: Global tracking problems for nonlinear control systems is studied.A new tracking approach is presented.The feedback control law is found.First the nonlinear system must be global asymptotic stable and ensure that when the tracking error tends to zero,the solution of the closed-loop systems is hounded.This shows that the global asymptotic tracking problem of nonlinear systems is solvable.These have reflected the conditions that ensure of the systems normally move in the practical problems.Finally,an example is given to show that the approach is effective.

Key words: nonlinear systems, global tracking, feedback control law, global asymptotic stable