模型用带扰动观测器补偿的滑模变结构控制，对控制函数切换并受滑动模态控制。

Owing to applying the model of sliding mode variable-structure control that has compensation of disturbance monitor, switching control function was controlled by sliding mode.

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讨论了带非负扰动的临界非齐次多重调和方程多解存在性和非存在性。

This paper deals with the existence and nonexistence of solutions for a critical semilinear polyharmonic equation with a non-negative perturbation.

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讨论了带变号扰动并且具有一定附加条件的临界椭圆方程的两个正解存在性。

This paper deals with the existence of two positive solutions for critical elliptic equations with a changed sign perturbation and with an auxiliary condition.

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