i want to obtain the transfer function of the controller

i knows the generalised transfer function of a controller and the values of the each term. how should i be able to obtain the desired transer function?

Answer 1

[Arkadiy Turevskiy]

If you know the transfer function, define it like this in MATLAB:

s=tf('s');
sys=(1*s^2+2*s+3)/(4*s^4+5*s^2+6*s+7)

[praval joshi]

my transfr function is ((V_o r_c)/((1-D)(R_L+r_c)) (s+1/〖Cr〗_c ){s-(1 )/L[R_L (1-D)^2-r]})/((s^2+s (c[r(R_L+r_c )+〖(1-D)^2 R〗_L r_c ]+L)/(LC(R_L+r_c))+(r+〖(1-D)^2 R〗_L)/(LC(R_L+r_c))))

iwant to just give the value of the above character and find the overall transfer funtion

[praval joshi]

and if there are any constant term in it

[praval joshi]

[Arkadiy Turevskiy]

Well, you can define all the variables numerically:

>>a=1;
>>k=2;
>>s=tf('s');
sys =

    2
  -----
  s + 1

Continuous-time transfer function.

>> a=3;k=10;
>> sys=k/(s+a)

sys =

   10
  -----
  s + 3

Continuous-time transfer function.

Answer 2

[praval joshi]

https://www.mathworks.com/matlabcentral/answers/uploaded_files/13491/Untitled.jpg image of the transfer fuction