# Search results

1. ### Impulse Response Function

Oh so sorry, i thought what i have given is the general representation of a state space equation, where x is the state variable, u is the input and y is the output. and yes, "x(dot)" is the derivative of x with respect to t but y is just y.
2. ### Impulse Response Function

Hi, given the state equations of a system, x(dot) = Ax + Bu y = Cx is the impulse response function of this system C(e^(At))B? If not, how can i identify the impulse response from a given state equations? Please advise. Thank you.
3. ### Matlab Plot Help Needed

yes, you are right, i declared a range for t and it's working. Thank you.
4. ### Matlab Plot Help Needed

i need to convert my transfer function to t-domain format and then plot the graph of the equivalent t-domain equation. i am using the ilaplace function to convert the s-domain transfer function to the t-domain equation. my code is >> f = (s + 3.1)/(s^2 +3.1*s + 2.23) f =...
5. ### Combine two different size matrix in state equations

Hi lanedance, Thank you for your reply. I confused myself and is able to get the answer already. The problem was that i have this A1 2x2 matrix, e.g. [1 2; 3 4] and i have another A2 1x1 matrix [5]. I wish to add them together, i.e. A = A1 + A2. At first i thought that the size different...
6. ### Combine two different size matrix in state equations

i have two sets of state equations: 1) x(dot) = (2x2)x + (2x1)u y = (1x2)x 2) x(dot) = (0)x + (1x1)u y = (1x1)x given the above, since A, B and C are of different sizes, how can i add the A from 1) and 2) to get a combined A? Is that possible? Please advise. Thank you.