MHB How to Solve This 2nd Order ODE in Control Systems?

ChemEng2
Messages
1
Reaction score
0
I'm trying to solve this equation analytically, but I can't even find the auxiliary equation or general solution!

View attachment 1867

Km = 0.5
C*e = 0
K2 = 0.03
K1 = 0.05
x* = 49
 

Attachments

  • wGsp94E.png
    wGsp94E.png
    1.6 KB · Views: 102
Physics news on Phys.org
What is $\tau$ and what is $\zeta$? If they do not depend on $t$, then this equation is fairly straight-forward (just assume $C_{m}=e^{kt}$, plug in, and solve for $k$, followed by finding a particular solution of the form $C_{m}=A$.)
 
I'd also advise substituting the values for your parameters, the equation will be much easier to read at least...
 
Thread 'Direction Fields and Isoclines'
I sketched the isoclines for $$ m=-1,0,1,2 $$. Since both $$ \frac{dy}{dx} $$ and $$ D_{y} \frac{dy}{dx} $$ are continuous on the square region R defined by $$ -4\leq x \leq 4, -4 \leq y \leq 4 $$ the existence and uniqueness theorem guarantees that if we pick a point in the interior that lies on an isocline there will be a unique differentiable function (solution) passing through that point. I understand that a solution exists but I unsure how to actually sketch it. For example, consider a...
Back
Top