How to make a 10mm impulse input
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hello
i have this code, i want to know how can change the impulse to 10mm magnitude?
Thanks
Ur_M=53; m1=Ur_M/12.33; m2=Ur_M/12.33; m3=Ur_M/6.16; m4=Ur_M/1.48; k1=6; k2=6; k3=10; k4=10; k5=18; c1=0.3; c2=0.65; c4=1.9; ms=0.3;
ks=403; cs=2150;
ub=1;
KG = [100 350 850] ;
u1_disp_imp = cell(3,1) ;
for i = 1:length(KG)
kg = KG(i) ;
A= [0 1 0 0 0 0 0 0 0 0; (-kg-ks)/ms -cs/ms ks/ms cs/ms 0 0 0 0 0 0;
0 0 0 1 0 0 0 0 0 0; ks/m1 cs/m1 (-ks-k1-k2)/m1 (-cs-c1-c2)/m1 k2/m1 c2/m1 k1/m1 c1/m1 0 0;
0 0 0 0 0 1 0 0 0 0; 0 0 k2/m2 c2/m2 (-k3-k2)/m2 -c2/m2 k3/m2 0 0 0; 0 0 0 0 0 0 0 1 0 0;
0 0 k1/m3 c1/m3 k3/m3 0 (-k1-k3-k4-k5)/m3 (-c1-c4)/m3 (k4+k5)/m3 c4/m3;
0 0 0 0 0 0 0 0 0 1; 0 0 0 0 0 0 (k4+k5)/m4 c4/m4 (-k4-k5)/m4 -c4/m4];
B= [0; kg/ms; 0; 0; 0; 0; 0; 0; 0; 0];
C= [1 0 0 0 0 0 0 0 0 0; 0 0 1 0 0 0 0 0 0 0; 0 0 0 0 1 0 0 0 0 0; 0 0 0 0 0 0 1 0 0 0; 0 0 0 0 0 0 0 0 1 0];
D= [0; 0; 0; 0; 0];
My_sys=ss(A,B,C,D)
[U,T,X]= impulse(My_sys)
u1_disp_imp{i} = X(:,3) ;
end
figure
hold on
for i = 1:3
plot(u1_disp_imp{i})
end
legend('disp due to impulse input for soft soil','disp due to impulse input for hard soil','disp due to impulse input for very hard soil')
回答（1 个）
Star Strider
2020-12-7
0 个投票
The Dirac 
function is defined as having unit area, infinite amplitude, and infinitesimal width. None of those can be changed.
function is defined as having unit area, infinite amplitude, and infinitesimal width. None of those can be changed. The step and stepplot functions allow changes in the amplitude of the step input with the StepAmplitude name-value pair in stepDataOptions.
2 个评论
Star Strider
2020-12-8
Probably.
Give it a shot!
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2020-12-8
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