Programming a Double Pendulum
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How do I model and solve for theta1 and theta2 for double pendulum problem? I am a complete beginner using Matlab and any programming language. I have solved for the Lagrangian by hand. I'm just not sure what needs to be in the 'for loop'. I also need to plot time theta1 and theta2. Please help me!
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Accepted Answer
Jan
on 17 May 2013
There are mnany different solutions. Perhaps you simply want to integrate the Lagrange function with ODE45.
Note that the simulation is more efficient using depending coordinates and a constraint matrix (see odeset->mass matrix and DAE options), that solving the equations to independent coordinates, because the trigonometrix stuff requires a lot of time.
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