“quadratic stabilization control”的概念、定义、翻译、参考文献-科学参考

单词	quadratic stabilization control
释义	quadratic stabilization control Encyclopedia 工学鲁棒控制理论释 quadratic stabilization control二次镇定控制考虑由状态空间模型描述的线性时变系统： (1) 式中为维状态向量；为维控制输入向量；，是时间变量；和，分别表示各系数矩阵不确定性的参数向量，和分别是和的有界闭集合。在式(1)中，若存在连续的状态反馈控制： (2) 以及维常数矩阵0">和常数 0">，而且对应于闭环控制系统：函数对时间的导数不依赖于和的值而满足： (3) 式中；是时间变量。则称式(1)是可二次镇定的。特别地，如果上述是线性函数，有： (4) 那么称式(1)是可通过线性控制实现二次镇定的。这时，式(2)或式(4)称为二次镇定控制。
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