智能控制(神經(jīng)網(wǎng)絡(luò))-作業(yè)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上智能控制作業(yè)學(xué)生姓名： 學(xué) 號(hào)： 專業(yè)班級(jí)： 7-2 采用BP網(wǎng)路、RBF網(wǎng)路、DRNN網(wǎng)路逼近線性對(duì)象，分別進(jìn)行matlab仿真。 （1） 采用BP網(wǎng)絡(luò)仿真網(wǎng)絡(luò)結(jié)構(gòu)為2-6-1。采樣時(shí)間1ms，輸入信號(hào)，權(quán)值的初值隨機(jī)取值，。仿真m文件程序?yàn)椋?BP simulationclear all;clear all;xite=0.5;alfa=0.5;w1=rands(2,6); % value of w1,initially by randomw1_1=w1;w1_2=w1;w2=rands(6,1); % value of w2,initially by random

2、w2_1=w2;w2_2=w2_1;dw1=0*w1;x=0,0'u_1=0;y_1=0;I=0,0,0,0,0,0' % input of yinhanceng cellIout=0,0,0,0,0,0' % output of yinhanceng cellFI=0,0,0,0,0,0'ts=0.001;for k=1:1:1000 time(k)=k*ts; u(k)=0.5*sin(3*2*pi*k*ts); y(k)=(u_1-0.9*y_1)/(1+y_12); for j=1:1:6 I(j)=x'*w1(:,j); Iout(j)=1/(

3、1+exp(-I(j); end yn(k)=w2'*Iout; %output of network e(k)=y(k)-yn(k); % error calculation w2=w2_1+(xite*e(k)*Iout+alfa*(w2_1-w2_2); % rectify of w2 for j=1:1:6 FI(j)=exp(-I(j)/(1+exp(-I(j)2); end for i=1:1:2 for j=1:1:6 dw1(i,j)=e(k)*xite*FI(j)*w2(j)*x(i); % dw1 calculation end end w1=w1_1+dw1+al

4、fa*(w1_1-w1_2); % rectify of w1 % jacobian information yu=0; for j=1:1:6 yu=yu+w2(j)*w1(1,j)*FI(j); end dyu(k)=yu; x(1)=u(k); x(2)=y(k); w1_2=w1_1;w1_1=w1; w2_2=w2_1;w2_1=w2; u_1=u(k); y_1=y(k);endfigure(1);plot(time,y,'r',time,yn,'b');xlabel('times');ylabel('y and yn'

5、;);figure(2);plot(time,y-yn,'r');xlabel('times');ylabel('error');figure(3);plot(time,dyu);xlabel('times');ylabel('dyu');運(yùn)行結(jié)果為：（2） 采用RBF網(wǎng)絡(luò)仿真 網(wǎng)路結(jié)構(gòu)為2-4-1，采樣時(shí)間1ms，輸入信號(hào)，權(quán)值的初值隨機(jī)取值，高斯基函數(shù)初值，。仿真m文件程序如下：%RBF simulationclear allclear allalfa=0.05;xite=0.5;x=0,0'b=1.5

6、*ones(4,1);c=0.5*ones(2,4);w=rands(4,1);w_1=w;w_2=w_1;c_1=c;c_2=c_1;b_1=b;b_2=b_1d_w=0*w;d_b=0*b;y_1=0;ts=0.001;for k=1:1:2000; time(k)=k*ts; u(k)=0.5*sin(1*2*pi*k*ts); y(k)=(u(k)-0.9*y_1)/(1+y_12); x(1)=u(k); x(2)=y_1; for j=1:1:4 h(j)=exp(-norm(x-c(:,j)2/(2*b(j)*b(j); end ym(k)=w'*h' em(k)

7、=y(k)-ym(k); for j=1:1:4 d_w(j)=xite*em(k)*h(j); d_b(j)=xite*em(k)*w(j)*h(j)*(b(j)-3)*norm(x-c(:,j)2; for i=1:1:2 d_c(i,j)=xite*em(k)*w(j)*h(j)*(x(i)-c(i,j)*(b(j)-2); end end w=w_1+d_w+alfa*(w_1-w_1); b=b_1+d_b+alfa*(b_1-b_2); c=c_1+d_c+alfa*(c_1-c_2); % Jacobian information yu=0; for j=1:1:4 yu=yu+

8、w(j)*h(j)*(c(1,j)-x(1)/b(j)2; end dyu(k)=yu; y_1=y(k); w_2=w_1; w_1=w; c_2=c_1; c_1=c; b_2=b_1; b_1=b; endfigure(1);plot(time,y,'r',time,ym,'b');xlabel('time(s)');ylabel('y and ym');figure(2);plot(time,y-ym,'r');xlabel('time(s)');ylabel('error'

9、);figure(3);plot(time,dyu,'b');xlabel('time(s)');ylabel('dyu');仿真結(jié)果為：（3） DRNN網(wǎng)路仿真采樣時(shí)間1ms，輸入信號(hào)，權(quán)值的初值隨機(jī)取值，取。仿真m文件程序?yàn)椋?DRNN simulationclear all;clear all;wd=rands(7,1);wo=rands(7,1);wi=rands(3,7);xj=zeros(7,1);xj_1=xj;u_1=0;y_1=0;xitei=0.35;xited=0.35;xiteo=0.35;ts=0.001;for k=1

10、:1:1000 time(k)=k*ts; u(k)=0.5*sin(4*pi*k*ts); y(k)=(u_1-0.9*y_1)/(1+y_12); Ini=u_1,y_1,1' for j=1:1:7 sj(j)=Ini'*wi(:,j)+wd(j)*xj(j); end for j=1:1:7 xj(j)=(1-exp(-sj(j)/(1+exp(-sj(j); end Pj=0*xj; for j=1:1:7 Pj=wo(j)*(1+xj(j)*(1-xj(j)*xj_1(j); end Qij=0*wi; for j=1:1:7 for i=1:1:3 Qij(i,j)=wo(j)*(1+xj(j)*(1-xj(j)*Ini(i); end end ymk=0; for j=1:1:7 ymk=ymk+xj(j)*wo(j); end ym(k)=ymk; e(k)=y(k)-ym(k); wo=wo+xiteo*e(k)*xj; wd=wd+xited*e(k)*Pj; wi=wi+xitei*e(k)*Qij; xj_1=xj; u_1=u(k); y_1=y(k);endfigure(1);plot(time,y,'r',time