Discrete time nonlinear system
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How can i develop this discrete-time nonlinear system in simulink?
[x]=[0.01x1 - x2; x1 - 0.003x2^2]
1 个评论
Fangjun Jiang
2011-11-16
Do you mean?
dx1/dt=0.01*x1-x2;
dx2/dt=x1-0.003*x2^2;
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Fangjun Jiang
2011-11-16
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Grab an Integrator block, if the input is dx1/dt, then the output is x1. Do the same for x2 and then you have all you need to build the equation. x2^2 is the same as x2*x2.
You don't seem to have any inputs, so set the initial condition of the Integrator blocks to specify the initial value of x1 and x2 and then run the simulation to see the dynamics.
4 个评论
dab483
2011-11-16
Fangjun Jiang
2011-11-16
The equation you gave is a continuous system, not a discrete system. A discrete system is typically described as x(k+1)=x(k)+....
c2d() can be used to convert continuous models to discrete time.
It sounds like you need to understand your problem better.
dab483
2011-11-17
Fangjun Jiang
2011-11-17
Then replace the Integrator block with the Unit Delay (1/Z) block. The input is x(k+1), the output is x(k).
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