syms s
R1=47000
R2=4700
C=2.2*1e-9
t=0:1e-6:60*1e-6
uc1=5*R2/((R1+R2)*s+R1*R2*C*s*s)
uc1t=ilaplace(uc1)
此步得到逆变换,不过是符号,将符号加上适当的(.*)或(./),得到u1 ,下面相同
uc2=5*R1*(exp(-5*s/1000000)+exp(-15*s/1000000)+exp(-25*s/1000000)+exp(-35*s/1000000)+exp(-45*s/1000000))/((R1+R2)*s+R1*R2*C*s*s)
uc2t=ilaplace(uc2)
uc3=-5*R1*(exp(-10*s/1000000)+exp(-20*s/1000000)+exp(-30*s/1000000)+exp(-40*s/1000000)+exp(-50*s/1000000))/((R1+R2)*s+R1*R2*C*s*s)
uc3t=ilaplace(uc3) |