化简图4-2方框图,并求出系统传递函数

工业技术2023-02-10 20:59:47百科知识库

化简图4-2方框图,并求出系统传递函数

  图4-2

  对图4-2化简如下:

  图4-2a

  图4-2b

  W(S)=Y(S)/X(S)

  ={W1(S)W2(S)/[1+W1(S)W3(S)W4(S)]}/{1+W1(S)W2(S)W4(S)/[1+W1(S)W3(S)W4(S)]}

  =W1(S)W2(S)/[1+W1(S)W3(S)W4(S)+W1(S)W2(S)W4(S)]

  =W1(S)W2(S)/{1+W1(S)W4(S)[W2(S)+W3(S)]}

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