Question

求助MATLAB

h=16;
r0=50;
ftuicheng=150*pi/180;%推程角
faiyuan=30*pi/180;%远休止角
fhuicheng=120*pi/180;%回程角
faijin=60*pi/180;%近休止角
fai1=linspace(0,ftuicheng)
s1=h*((fai1/ftuicheng)-(sin(2*pi*fai1/ftuicheng)/(2*pi)));
fai2=linspace(ftuicheng,ftuicheng+faiyuan)
s2=16;
fai3=linspace(ftuicheng+faiyuan,ftuicheng+faiyuan+fhuicheng)
s3=h-10*h*(fai3-ftuicheng-faiyuan).^3/(fhuicheng)^3+15*h*(fai3-ftuicheng-faiyuan).^4/(fhuicheng)^4-6*h*(fai3-ftuicheng-faiyuan).^5/(fhuicheng)^5;
fai4=linspace(ftuicheng+faiyuan+fhuicheng,2*pi)
s4=0;
fai=[fai1,fai2,fai3,fai4];
s=[s1,s2,s3,s4];
x=(r0+s).*sin(fai);
y=(r0+s).*cos(fai);
plot(x,y,'linewidth',2)
title('凸轮轮廓')
xlabel('mm')
ylabel('mm')
axis equal

运行的时候出现“??? Error using ==> .*
Matrix dimensions must agree.”哪位大哥能帮我修改一下，感激不尽！

Answer 1

s2 和s4 改下就行了！如下：

h=16;

r0=50;

ftuicheng=150*pi/180;%推程角

faiyuan=30*pi/180;%远休止角

fhuicheng=120*pi/180;%回程角

faijin=60*pi/180;%近休止角

fai1=linspace(0,ftuicheng)

s1=h*((fai1/ftuicheng)-(sin(2*pi*fai1/ftuicheng)/(2*pi)));

fai2=linspace(ftuicheng,ftuicheng+faiyuan)

s2=16*ones(1,100);

fai3=linspace(ftuicheng+faiyuan,ftuicheng+faiyuan+fhuicheng)

s3=h-10*h*(fai3-ftuicheng-faiyuan).^3/(fhuicheng)^3+15*h*(fai3-ftuicheng-faiyuan).^4/(fhuicheng)^4-6*h*(fai3-ftuicheng-faiyuan).^5/(fhuicheng)^5;

fai4=linspace(ftuicheng+faiyuan+fhuicheng,2*pi);

s4=0*ones(1,100);   

fai=[fai1,fai2,fai3,fai4];

s=[s1,s2,s3,s4];

x=(r0+s).*sin(fai);

y=(r0+s).*cos(fai);

plot(x,y,'linewidth',2)

title('凸轮轮廓')

xlabel('mm')

ylabel('mm')

axis equal

grid on;

图：

Answer 2

Answer 3

主要问题出在这里：

x=(r0+s).*sin(fai);
y=(r0+s).*cos(fai);

这里x 是1x2 double
r0是一个整数50， s是1x202 double， fai是1x400 double
这几个数维数都不一样，你当然没法乘，也没法赋值给x