Unstable LOS will lead bigger tracking error.

视轴变化将引起跟踪瞄准系统的误差。

Theoretical analysis verifies that tracking error converges to zero.

理论分析证明了跟踪误差收敛到零。

By Lyapunov method, the tracking error asymptotically converges to zero.

通过理论分析，证明了跟踪误差收敛到零。

However there has larger tracking error in the FNNSMC than that in the SMC.

然而它与一般滑模控制器相比有较大的跟踪误差。

Then, some methods to compensate the dynamic tracking error are introduced.

然后探讨了补偿动态跟踪误差的一些方法。