机械优化设计大作业

1、机械优化设计大作业机械优化设计大作业1. 求f =(x-4) * (x-5)的最优解和最优值已知初始搜 索区间为 0, 1 0,迭代精度 e=0.001.2. 用黄金分割法3. 黄金分割法的算法框图5 / 4作b-0.618(b-a) =a (1) ;f(a (1) ) = f1 a+0.618(b-a) = a (2) ;f(a (2) ) = f2N/fia,a(2) = a (1),a(2) = b,a(1) = a(2)f2 = f1f1 = f2b-0.618(b-a) = a(1)a+0.618(b-a)= a(1)f (a(1) =f1f (a(2) =f2b-a a* ;f*=

2、f(a*)停机械优化设计大作业4.程序#include#includedouble f(double x) return(x-4)*(x-5);void main(void)double a1,y1,a2,y2,a,b,k,e; a=0;b=10;e=0.001;k=0.618; a1=b-k*(b-a);y1=f(a1);a2=a+k*(b-a);y2=f(a2);printf(ata1tta2tbtty2n);while(fabs(b-a)e)if(y1=y2)a=a1;a1=a2;y1=y2;a2=a+k*(b-a);y2=f(a2);elseb=a2;a2=a1;y2=y1; a1=b

3、-k*(b-a);y1=f(a1);printf(%f %f %f %f %fn,a,a1,a2,b,y1,y2);printf(x*=%fn,(a+a2)/2);printf(y*=%fn,y1);5.经 c+ 运行的结果为机械优化设计大作业al4.7210504.3771394.1642014.37713963284.S0J34.4S?3374.E0S3344.5011794.5011794.4992fi54.4983454.49?3654.500097 4.49793 4.G00Q97a2 3 2的醐 4_72a5fi C .2?B4fl0 4.721050 4.377139 4.5fl

4、B334 4.GB9&7 4.Se8334 4.b3VStl 4.568334 4.52O?36 4.500334 4.5H117V 4.5B38目乎4.0 4.4?93GE 4.5SQa?7 4.568486 4,BflPH197 4.508332S_3&Q?Gn 3.92&B& 3-8208093- 820Q脑 旳.3刃伽 -1.37713? 4.4S8J28 .4583234- 489337 .487337 .4833了 .496594 4_49fi94 .496594 -5.498345 d.499365 .49936S d.499793 *=4.500608 iy*=-0.2&HUa

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