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Using Simulink, simulate both the nonlinear model (1) and the linearized model (2), for the case when all the initial states are zero except
Using Simulink, simulate both the nonlinear model (1) and the linearized model (2), for the case when all the initial states are zero except a (0) 0.1 [rad], and with no input. Plot the outputs (t) and a(t), and compare the output responses between (1) and (2). Add your Matlab code(s) (m-file and Simulink block) in your report. = The equations of motion can be written (no derivation is required here) as (Jr + J, sin a) + m,rl cos a +2.J, sin a cos ad - m,rl sin ad = 7-6,0, Jp+mprl cos af - Jp sin a cos a0 +mpgl sin a = -b, (1) where the notations are indicated in the figure, and := Lp/2. If we approximate the system around 0 = 0 and a = 0, using sinaa, cos a 1 and sin a 0, we can simplify these equations as J, + mrl = T - b,0, From these two equations, we can derive where mrl + Jp = -ba-mpgla. a }, {.Jp(7 b0) + mrl(b+m,gla)}} {J, (b + m,gla) mrl(7 b0)} - JJrJp - (mprl). By introducing the state variables as = 0, I = 0, 1:= I3 = 0, I4 = , and the input and outputs as we can get the state-space model as i = where A:= 1 -Jpbr/Jt 0 0 0 mrlb,/J 0 u= r, y = 0, y = 0, Notation m., T br mp Lp bp 9 [ 8]. The parameter values are given in the table below. J, := Ar+ Bu, Cx, 0 0 (mpl)rg/J mprlbp/J 0 1 J.mpgl/J Jbp/Jt C:= 1000 0010 1 1 =\m,r, Jp = {ml, l= Meaning rotary arm mass rotary arm length viscous friction coefficient pendulum mass pendulum length viscous friction coefficient gravitational acceleration B: 4/2 1 J Value and unit 0.095 kg 0.085 m Jp -mprl 0.001 Nms/rad 0.024 kg 0.129 m 5 105 Nms/rad 9.81 m/s (2) Hint: You may want to realize the nonlinear model (1) in Simulink in the following way. S Matlab function 3 [:] [B] a
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