A design method of nonlinear reduced order state observer is presented for feedback linearizable nonlinear systems, and the asymptotic convergence is proved for the proposed state observer.

对于一类可以反馈线性化的非线性系统，提出了一种非线性降维状态观测器设计方案，并证明了状态观测误差的渐近收敛性。

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This paper deals with the problem of a robust asymptotic output tracking control of fully input-output linearizable nolinear systems via output feedback.

进一步讨论了感应电动机磁链控制模型，给出了定子磁链渐近跟踪控制的条件。

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