# i nclude<stdio.h> HX=`kkX
# i nclude<stdio.h> Fe/*U4xU
# i nclude<math.h> TnKe"TA|9
#define PI 3.1415926 ;e[-t/SI
void ydgl(); 0#yo\McZ
float d,am,ro,e,h,p,dt0,d0,s,ds,r,al; k*n5+[U^tP
int f; z{%G
main() Y)!5Z.K
{ printf("Determaination the prime circle of cam\n"); `GSfA0?
printf("----------------------------\n"); goxgJOiB
printf( "input ro=");scanf("%f",&ro); F-ijGGL#
printf("input h=");scanf("%f",&h); >yL8C:J9
printf("input e=");scanf("%f",&e); .IYE"0)wJ
printf("input dt0=");scanf("%f",&dt0); ,m:MI/)p
am=0;p=PI/180; 4~Z\tP|Q.
printf("The initial data:ro=%f\n",ro); c5t?S@b
printf("h=%f e=%f dt0=%f\n",h,e,dt0); 0&w.QoZY(
do 43(+3$V M7
{ro=ro+5; r<~1:/F|
for(f=0;f<=dt0;f=f+2) .IG(Y!cB
{d=PI*f/dt0; e<IT2tv>u
ydgl(); hZyz5aZ)K
} EmH2 Dbw
} K\;b3
while(am>30*p); 0mCrA|A.
printf("The intermediate results: am=%f\n",am/p); tt`b+NOH>
printf("ro=%f\n",ro); 8WaVs 6
do @=@WRPGM*9
{ro=ro-1; Ao=.=0os
if(ro<e) rt."P20T
break; %*Y:Rm'>
g y&B"`
for(f=0;f<=dt0;f=f+2) q5QYp
{d=PI*f/dt0; ymzlRs1^Ct
ydgl(); y&SueU=
} *xt3mv/<z
} y=q\1~] Z
while((am>30*p)||(am<=29.5*p)); [S*bN!t
printf("The final results:max alfa=%f\n",am/p); G#K=n
printf(" min ro=%f\n",ro); eyUo67'7
getch(); xy[R9_V
} o,u-%
void ydgl() $%sOL(
r
{ d0=dt0*p; 8wwD\1pLS
s=0.5*h*(1-cos(d)); 5]gd,&^?>
ds=0.5*h*PI*sin(d)/d0; s_VP(Fe@K
r=sqrt(ro*ro-e*e); k+%6:r,r&
if((s+r)==0) Au:Q4x.
return; A<AZs~f
al=atan((ds-e)/(s+r)); ?mrG^TV^+r
if(al>am) Li iQ;x
am=al; ~u-mEdu3C
}