Homework Statement
Hi,
i need to write the differencial force equation for the system attached,
and i am not sure if what i do is right.
when:
F- externa power
m1,m2 - mass
x1,x2 - mas location
The Attempt at a Solution
This is what i got:
for m1:
F-k*(x1-x2)-D*(x1'-x2')=m*x1''...
Homework Statement
I need to find a system rise time (from 10% to 90%) using matlab.
Is this code right?
The Attempt at a Solution
sys = tf(num, den);
y= step(sys, t);
tr1 = max(find(y<0.1));
tr2 = min(find(y>0.9));
rise_time = t(tr2) - t(tr2);
Is this seems to be right?
Homework Statement
I have the following matrix:
A=[0 -1; 0 -1]
and i need to calculate: exp(At) in several ways, 2 of them are using the reverse Laplace transform and using: I + Ʃ(A^kt^k)/k!
i have tried to start the series but i am getting an expression that i can't say which series it...
i have tried taking the steps to find the norton source:
i have shorted the load (Z) and want to check what current is Iab.
tried some KVL,KCL but with no success to get somthing...
Theoretic question:
is there a way to know if it is no possible to write impedance/admitance matrix (depend on which method we want - volage or currents) just from the circuite connections?
Thanks!
Homework Statement
I need to find the thevinin equivalent for points AB.
The Attempt at a Solution
I know the Is current is splitting equally between R1 and R3, but doesn't go to R2 because of the dependent current source.
so i thought that through:
I(R5) = Is
and I(R3)=Is/2
so the...
In order to make the adding easier i need to save the polynom in this order right?
so if i need to add to a given polynom another node (with new coefficient and exponent) i nedd to insert it on the right place?