PID Command in MATLAB

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Muhammad Adeel Ahsan Awan
回答： Muhammad Adeel Ahsan Awan 2020-6-5
I am having problem in solving Simulink Model in MATLAB.
I tried to solved this using following code
s=tf('s')
Phi=193.4/(s^2)
K_Phi=pid(0.3,0,0.2,100)
Phi_1=feedback(K_Phi*Phi,1,-1)
step(Phi_1)
I also tried on more method
K_Phi=pid(0.3,0,0.2,100)
Phi_1=feedback(Phi,1,-1)
Phi_2=Phi_1*K_Phi
step(Phi_2)
But, both ways aren't working kindly help me in solving this.

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采纳的回答

Muhammad Adeel Ahsan Awan
Well , i got the answer.
s=tf('s')
Phi=193.4/(s^2)
K_Phi=pid(0.3,0,0.2)
Phi_1=feedback(K_Phi*Phi,1)
step(Phi_
The Problem was using this PID command.

更多回答（1 个）

madhan ravi
madhan ravi 2020-6-3
I think you should use lsim(...) because there’s a step input to the model.

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