資源簡介
用T-S模糊辨識方法識別一個二階對象,然后用GPC控制它。對于想深入學習模糊控制以及預測控制的朋友可以參看以下,含好幾頁的PDF說明文檔哦。
覺得有用的朋友,請頂一個!

代碼片段和文件信息
clear?all
close?all
clear?all
%獲得樣本數(shù)據(jù)
y(1)=1;y(2)=1;u(1)=0;r=16;N0=500;yr1=1;
for?k=3:N0;
????u(k-1)=5*sin(pi*(k-1)/100);
????y(k)=(y(k-1)*y(k-2)*(y(k-1)-2.5)/(1+y(k-1)^2+y(k-2)^2))+u(k-1);
end
U1=zeros(4N0);
for?k=1:N0;
????if?y(k)<=-5
????????U1(4k)=-0.1*y(k)-0.5;
???%%%%%%%
????????U1(3k)=0.2*y(k)+2;
????elseif?y(k)<=0
????????U1(3k)=-0.2*y(k);
????????U1(2k)=0.2*y(k)+1;
????elseif?y(k)<=5
????????U1(2k)=-0.2*y(k)+1;
????????U1(1k)=0.1*y(k);
????else
????????U1(1k)=0.1*y(k);
????end???
end???????
for?i=1:4;
????den=0.0001;
????for?k=1:N0
????????den=U1(ik)+den;
????end
???C(i)=(U1(i:)*y‘)/den;?????????????????
end
?for?k=1:N0;
????for?i=1:4;
????????D(ik)=abs(y(k)-C(i));???????
????end
????if?(D(:k)>0)
????????for?i=1:4;
????????????den=0.00001;
????????????for?j=1:4;
????????????????den=D(ik)/D(jk)+den;?
????????????end
????????????U2(ik)=1/den;?
????????end
????else
????????flag=(D(:k)>0);
????????for?i=1:4
????????????if?(flag(i)==1)
????????????????U2(ik)=0;
????????????else
????????????????U2(ik)=1/sum(flag);
????????????end
????????end
????end?????????
?end
for?i=1:4
????den=0.00001;
????for?k=1:N0
????????den=U2(ik)+den;
????end
C(i)=(U2(i:)*y‘)/den;????
end
for?k=1:N0
????den=0.00001;
???for?i=1:4
???????den=U2(ik)+den;
???end
???for?i=1:4
???????Beta(ik)=U2(ik)/den;
???end
end
for?k=3:N0
????fai(:k-2)=[Beta(:k-2)
????????????Beta(:k-2)*y(k-1)
????????????Beta(:k-2)*y(k-2)
????????????Beta(:k-2)*u(k-1)];??
end
ft=fai‘;
w=zeros(N0-216);
w(:1)=ft(:1);
for?k=1:N0-2
????for?h=2:16
????????for?i=1:h-1
????????????den(1i)=0.001;
????????????for?k=1:N0-2
????????????????den(1i)=den(1i)+w(ki);
????????????end
????????????alpha(hi)=0;
????????????for?k=1:N0-2
????????????????alpha(hi)=alpha(hi)+w(ki)*ft(kh)/den(1i);
????????????end
????????end
????????s(1h)=0;
????????for?i=1:h-1
????????????s(1h)=s(1h)+alpha(hi)*w(ki);
????????end
????????w(kh)=ft(kh)-s(1h);
????end
end?
W=w‘;
at=alpha‘;?
for?i=1:r;
????den=0.0001;
????for?k=1:N0-2
????????????den=W(ik)+den;
????end
????g(i)=(W(i:)*y(1:N0-2)‘)/den;
end
theta(r)=g(r);
for?i=(r-1):(-1):1;
????theta(i)=g(i)-at(i:)*theta‘;
end
x=[-15:0.1:15];
for?k=1:301
if?x(k)<=-10
????UNB(k)=-0.1*x(k)-0.5;
????UNS(k)=0;
????UPS(k)=0;
????UPB(k)=0;
elseif?x(k)<=-5
????UNB(k)=-0.1*x(k)-0.5;
???UNS(k)=0.2*x(k)+2;
????UPS(k)=0;
????UPB(k)=0;
elseif?x(k)<=0
????UNB(k)=0;
???UNS(k)=-0.2*x(k);
???UPS(k)=0.2*x(k)+1;
???UPB(k)=0;
elseif?x(k)<=5
????UNB(k)=0;
????UNS(k)=0;
????UPS(k)=-0.2*x(k)+1;
????UPB(k)=0.1*x(k);
else
????UNB(k)=0;
????UNS(k)=0;
????UPS(k)=0;
????UPB(k)=0.1*x(k);
????if?UPB(k)>=1
????????UPB(k)=1;
????end
end
end
hold?on;
plot(xUNB‘b‘);
plot(xUNS‘k‘);
plot(xUPS‘r‘);
plot(xUPB‘g‘);
subplot(211):plot(xUNB‘b‘xUNS‘k‘xUPS‘r‘xUPB‘g‘);
?xlabel(‘隸屬函數(shù)圖‘);;ylabel(‘隸屬度‘)
hold?on
%GPC控制
N=8
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????5768??2009-07-01?15:00??模糊控制二\fuzzywork2.m
?????文件?????115136??2009-11-11?15:35??模糊控制二\模糊控制.pdf
?????目錄??????????0??2009-07-01?17:33??模糊控制二
-----------?---------??----------?-----??----
???????????????120904????????????????????3
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