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can any one correct this code please?
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% CRANK CONNECTING ROD EXPERIMENT
clc
clear all
close all
L=4; %no of links
Jl=4; %no of full joints
J2=0; %no of half jonts
M=3*(L-1)-2*Jl-J2;
l1=50; %lenght of input crank in mm
12=180; %lenght of link2 in mm
14=165; %lenght of link3 in mm
D1=0:15:360; %angle of input link
wl=15; %angular velocity of input link in degree/sec
i=0;
for i=l:1:25
D2(i)=atan((ll*sind(D1(i)))/((ll*sind(D1(i)))-14))+180; %angle of link 2
13(i)=((((ll*cosd(D1(i)))-14)/cosd(D2(i)))-12)+150;%lenght of link 3
V3(i)= (-ll*sind(D1(i))*wl);%veloity of link 3
a3(i)=-ll*wl*wl*cosd(D1(i));%accelartaion of link 3
end
subplot(2,2,1)
plot(01,13)
xlabel( 'theeta 01')
ylabel('lenght 13')
title('Theeta VS Lenght')
subplot(2,2,2)
plot(01,V3)
xlabel('theeta 01')
ylabel('velocity V3')
title('Theeta VS velocity')
subplot(2,2,3)
plot(01,a3)
xlabel('theeta 01')
ylabel('acceleration a3')
title('Theeta VS accelartion')
2 个评论
Steven Lord
2023-3-10
What leads you to believe this code is not correct?
John D'Errico
2023-3-10
Why? What do YOU think is wrong with it? Code is just code, without any understanding of what it should be doing. As such, that code is perfect. It does exactly what it should do. Remember, we cannot read your mind.
Is there an error? If so, what error? Show the complete error message, so EVERYTHING IN RED.
采纳的回答
Cris LaPierre
2023-3-10
Did you happen to use OCR to capture this code? I converted your text to code and ran it. From there, it appears the error is you use the number 1 to start several of your variable names instead of, what I'm guessing is supposed to be a lowercase 'l'.
It looks like the same thing has happened with your angles - They are defined as 'D1' but then in your plotting code you use '01'.
% CRANK CONNECTING ROD EXPERIMENT
clc
clear all
close all
L=4; %no of links
Jl=4; %no of full joints
J2=0; %no of half jonts
M=3*(L-1)-2*Jl-J2;
l1=50; %lenght of input crank in mm
l2=180; %lenght of link2 in mm
l4=165; %lenght of link3 in mm
D1=0:15:360; %angle of input link
wl=15; %angular velocity of input link in degree/sec
i=0;
for i=1:1:25
D2(i)=atan((l1*sind(D1(i)))/((l1*sind(D1(i)))-14))+180; %angle of link 2
l3(i)=((((l1*cosd(D1(i)))-14)/cosd(D2(i)))-12)+150;%lenght of link 3
V3(i)= (-l1*sind(D1(i))*wl);%veloity of link 3
a3(i)=-l1*wl*wl*cosd(D1(i));%accelartaion of link 3
end
subplot(2,2,1)
plot(D1,l3)
xlabel( 'theeta D1')
ylabel('lenght l3')
title('Theeta VS Lenght')
subplot(2,2,2)
plot(D1,V3)
xlabel('theeta D1')
ylabel('velocity V3')
title('Theeta VS velocity')
subplot(2,2,3)
plot(D1,a3)
xlabel('theeta D1')
ylabel('acceleration a3')
title('Theeta VS accelartion')
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