# cql

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## 同步带传动张紧轮位置估算

[DLcal.m]

function DL = DLcal(y)
global br lr ir a x IL
L1 = (pi/2 + asin((br-lr)/a))*br;
L2 = sqrt(a^2 -(br-lr)^2);
L3 = (pi/2 - asin((br-lr)/a))*lr;
L4 = (pi/2 + asin((lr+ir)/sqrt((a-x)^2+y^2)) - atan(y/(a-x)))*lr;
L5 = sqrt((a-x)^2 + y^2 - (lr+ir)^2);
L6 = (asin((br+ir)/sqrt(x^2+y^2))-atan(y/x)+asin((lr+ir)/sqrt((a-x)^2+y^2))-atan(y/(a-x)))*ir;
L7 = sqrt(x^2 + y^2 - (br+ir)^2);
L8 = (pi/2 + asin((br+ir)/sqrt(x^2+y^2)) - atan(y/x)) * br;
TL = L1+L2+L3+L4+L5+L6+L7+L8;
DL = TL - IL;


[example.m]

global br lr ir a x IL
br = 60/pi;
lr = 30/pi;
ir = 25/2;
a = 234;
x = 200;
IL = 560;
y = fsolve(@DLcal,0)

figure(1);
clf;
hold on;
axis equal
line([br*(br-lr)/a,a+lr*(br-lr)/a],[-br*sqrt(a^2-(br-lr)^2)/a,-lr*sqrt(a^2-(br-lr)^2)/a])
Ltheta = asin((br+ir)/sqrt(x^2+y^2))-atan(y/x);
line([br*sin(Ltheta),x-ir*sin(Ltheta)],[br*cos(Ltheta),y-ir*cos(Ltheta)])
Rtheta = asin((lr+ir)/sqrt((a-x)^2+y^2))-atan(y/(a-x));
line([a-lr*sin(Rtheta),x+ir*sin(Rtheta)],[lr*cos(Rtheta),y-ir*cos(Rtheta)]);
circle(0,0,br);
circle(a,0,lr);
circle(x,y,ir);


[circle.m]

function circle(x0,y0,r)
alpha=0:0.01:2*pi;
x=x0+r*cos(alpha);
y=y0+r*sin(alpha);
figure(1);
plot(x,y,'r','LineWidth',1)


posted on 2013-06-22 21:01  cql blog  阅读(5544)  评论(0编辑  收藏