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  1. CCLIUTW

    Derive Non-Linear Transfer Function

    Hello Nachtwey, Thank you for your sharing, it is an interesting experience, and RK method is very useful. I used RK method calculated the results of W, and it is right result compare with Simulink. I learned a lot of knowledge! Thank you so much. Today is very lucky! You are my Santa this...
  2. CCLIUTW

    Derive Non-Linear Transfer Function

    Thanks for all response. Yes, this friction model is Stribeck friction model, and I tried to derive W_out(t)'s differential equations, but it is too difficult to get W_out(t). I will try to linearize Stribeck friction model, and wish it can get good result.
  3. CCLIUTW

    Derive Non-Linear Transfer Function

    Thank you for your answer, xnuke.
  4. CCLIUTW

    Derive Non-Linear Transfer Function

    Hello engineers: I have an question of derive transfer function in nonlinear control system, as title. Generally, a linear system can easy derive transfer function like the picture, but it is difficult to derive transfer function when it include friction model. I want to ask every excellent...

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