一、单项选择填空(每小题4分,共20分) 1.系统不稳定时,其稳定误差为() （1)+∞2)-∞3)04)以上都不对 2.2-1-2型渐近对数幅频特性描述的闭环系统一定()

第六章线性系统的校正方法 6-1综合与校正的基本概念 6-2常用校正装置及其特性 6-3串联校正 6-4反馈校正

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微分方程→单输入、单输出线性定常系统状态空间方程→多变量系统,现代控制理论的数学描述方法两种表示方法可以互相转换

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用微分方程描述系统输入输出变量的动态特性是建立数学模型的一种基本方法

3.1传递函数 定义:初始条件为零的线性定常系统输出的拉普拉