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 **表征系统中输入所引起的内部状态变化的过程。** 输入引起的--->状态变化
 
-![[Pasted image 20250626160523.png]]
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+![[Pasted image 20250626160523.png]]
+
+2、输出方程：描述系统**输出变量**与**状态变量**和**输入变量**之间函数关系的代数方程组。
+![[Pasted image 20250626160850.png]]
+
+状态空间表达式：状态方程与输出方程的组合成为状态空间表达式，又称为状态方程或状态空间描述
+
+对于一个n个状态变量，p个输入变量，q个输出变量的系统
+
+![[Pasted image 20250626161124.png]]
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