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x
ts=20;
sys=tf([1],[60,1],'inputdelay',80); %线性模型离散化
dsys=c2d(sys,ts,'zoh');
[num,den]=tfdata(dsys,'v')
xite=0.25;
alfa=0.05;
S=1; %Signal type
IN=3;H=6;Out=1; %NN Structure
if S==1 %Step Signal
wi=[-0.6394 -0.2696 -0.3756;
-0.8603 -0.2013 -0.5024;
-1.0749 0.5543 -1.6820;
-0.3625 -0.0724 -0.6463;
0.1425 0.0279 -0.5406;
-0.7023 -0.2596 -0.5437];
%wi=0.50*rands(H,IN);
wi_1=wi;wi_2=wi;wi_3=wi;
wo=[0.7576 0.2616 0.5820 -0.1416 -0.1325 -0.1146];
%wo=0.50*rands(Out,H);
wo_1=wo;wo_2=wo;wo_3=wo;
end
if S==2 %Sine Signal
wi=[-0.2846 0.2193 -0.5097;
-0.7484 -0.1210 -0.4708;
-0.7176 0.8297 -1.6000;
-0.0858 0.1925 -0.6346;
0.4358 0.2369 -0.4564;
-1.0668 0.0988 0.2049];
%wi=0.50*rands(H,IN);
wi_1=wi;wi_2=wi;wi_3=wi;
wo=[1.0438 0.5478 0.8682 0.1446 0.1537 0.5811];
%wo=0.50*rands(Out,H);
wo_1=wo;wo_2=wo;wo_3=wo;
end
x=[0,0,0];
% z=[0,0,0];
u_1=0;u_2=0;u_3=0;u_4=0;u_5=0;
y_2=0;y_1=0;
a_1=0;
Oh_1=0;
% xi_1=zeros(1,IN);
Oh=zeros(H,1); %Output from NN middle layer
I=Oh; %Input to NN middle layer
% Oh_1=zeros(H,1);
error_3=0;
error_2=0;
error_1=0;
ts=0.001;
for k=1:1:6000
time(k)=k*ts;
if S==1
rin(k)=1.0;
elseif S==2
rin(k)=sin(1*2*pi*k*ts);
end
yout(k)=-den(2)*y_1+num(2)*u_5; % 线性模型
error(k)=rin(k)-yout(k);
xi=[error(k),error_1,error_2];
x(1)=error(k)-error_1;
x(2)=error(k);
x(3)=error(k)-2*error_1+error_2;
epid=[x(1);x(2);x(3)];
I=xi*wi';
for j=1:1:H
Oh(j)=1/(1+exp(-I(j)));%Middle Layer'output
end
K=wo*Oh; %Output Layer
a(k)=1./(1+exp(-K));
kp(k)=100/(a(k)+40);
ki(k)=100;
kd(k)=20;
Kpid=[kp(k),ki(k),kd(k)];
du(k)=Kpid*epid;
u(k)=u_1+du(k);
delta3=error(k)*((80/(a_1+40)^2)*error_1-(80/(a_1+40)^2)*error_2)*a_1*(1-a_1);
for i=1:1:H
d_wo=xite*delta3*Oh(i);
end
end
wo=wo_1+d_wo;
% %Hidden layer
for i=1:1:H
dO(i)=exp(-I(i))/(1+exp(-I(i))); %求&'(O(i))
end
segma=delta3*wo_1;
for i=1:1:H
delta2(i)=dO(i)*segma(i);
end
d_wi=xite*delta2*I';
wi=wi_1+d_wi;
%Parameters Update
u_5=u_4;u_4=u_3;u_3=u_2;u_2=u_1;u_1=u(k);
y_2=y_1;y_1=yout(k);
a_1=a(k);
Oh_1=Oh;
wo_3=wo_2;
wo_2=wo_1;
wo_1=wo;
wi_3=wi_2;
wi_2=wi_1;
wi_1=wi;
error_3=error_2;
error_2=error_1;
error_1=error(k);
end
figure(1);
plot(time,rin,'r',time,yout,'b');
xlabel('time(s)');ylabel('rin,yout');
[ 本帖最后由 xinyuxf 于 2007-7-12 14:51 编辑 ] |