状态空间表达式的MATLAB建模
设本节中,具有r个输入、m个输出的n阶线性定常系统的状态空间表达式为
X ˙ ( t ) = A X ( t ) + B U ( t ) \dot{X}(t)=AX\left(t\right)+BU\left(t\right) X˙(t)=AX(t)+BU(t)
Y ( t ) = C X ( t ) + D U ( t ) Y(t)=CX(t)+DU(t) Y(t)=CX(t)+DU(t)
其中, X ( t ) = [ x 1 ( t ) ⋮ x n ( t ) ] , U ( t ) = [ u 1 ( t ) ⋮ u r ( t ) ] , Y ( t ) = [ y 1 ( t ) ⋮ y m ( t ) ] X(t)=\left[\begin{matrix}x_1(t)\\\vdots\\x_n(t)\\\end{matrix}\right],U(t)=\left[\begin{matrix}u_1(t)\\\vdots\\u_r(t)\\\end{matrix}\right],Y(t)=\left[\begin{matrix}y_1(t)\\\vdots\\y_m(t)\\\end{matrix}\right] X(t)=⎣⎢⎡x1(t)⋮xn(t)⎦⎥⎤,U(t)=⎣⎢⎡u1(t)⋮