产生一个fuzzypid.fis文件
- %Fuzzy Tunning PID Control
- clear all;
- close all;
- a=newfis('fuzzpid');
- a=addvar(a,'input','e',[-3,3]); %Parameter e
- a=addmf(a,'input',1,'NB','zmf',[-3,-1]);
- a=addmf(a,'input',1,'NM','trimf',[-3,-2,0]);
- a=addmf(a,'input',1,'NS','trimf',[-3,-1,1]);
- a=addmf(a,'input',1,'Z','trimf',[-2,0,2]);
- a=addmf(a,'input',1,'PS','trimf',[-1,1,3]);
- a=addmf(a,'input',1,'PM','trimf',[0,2,3]);
- a=addmf(a,'input',1,'PB','smf',[1,3]);
- a=addvar(a,'input','ec',[-3,3]); %Parameter ec
- a=addmf(a,'input',2,'NB','zmf',[-3,-1]);
- a=addmf(a,'input',2,'NM','trimf',[-3,-2,0]);
- a=addmf(a,'input',2,'NS','trimf',[-3,-1,1]);
- a=addmf(a,'input',2,'Z','trimf',[-2,0,2]);
- a=addmf(a,'input',2,'PS','trimf',[-1,1,3]);
- a=addmf(a,'input',2,'PM','trimf',[0,2,3]);
- a=addmf(a,'input',2,'PB','smf',[1,3]);
- a=addvar(a,'output','kp',[-0.3,0.3]); %Parameter kp
- a=addmf(a,'output',1,'NB','zmf',[-0.3,-0.1]);
- a=addmf(a,'output',1,'NM','trimf',[-0.3,-0.2,0]);
- a=addmf(a,'output',1,'NS','trimf',[-0.3,-0.1,0.1]);
- a=addmf(a,'output',1,'Z','trimf',[-0.2,0,0.2]);
- a=addmf(a,'output',1,'PS','trimf',[-0.1,0.1,0.3]);
- a=addmf(a,'output',1,'PM','trimf',[0,0.2,0.3]);
- a=addmf(a,'output',1,'PB','smf',[0.1,0.3]);
- a=addvar(a,'output','ki',[-0.06,0.06]); %Parameter ki
- a=addmf(a,'output',2,'NB','zmf',[-0.06,-0.02]);
- a=addmf(a,'output',2,'NM','trimf',[-0.06,-0.04,0]);
- a=addmf(a,'output',2,'NS','trimf',[-0.06,-0.02,0.02]);
- a=addmf(a,'output',2,'Z','trimf',[-0.04,0,0.04]);
- a=addmf(a,'output',2,'PS','trimf',[-0.02,0.02,0.06]);
- a=addmf(a,'output',2,'PM','trimf',[0,0.04,0.06]);
- a=addmf(a,'output',2,'PB','smf',[0.02,0.06]);
- a=addvar(a,'output','kd',[-3,3]); %Parameter kp
- a=addmf(a,'output',3,'NB','zmf',[-3,-1]);
- a=addmf(a,'output',3,'NM','trimf',[-3,-2,0]);
- a=addmf(a,'output',3,'NS','trimf',[-3,-1,1]);
- a=addmf(a,'output',3,'Z','trimf',[-2,0,2]);
- a=addmf(a,'output',3,'PS','trimf',[-1,1,3]);
- a=addmf(a,'output',3,'PM','trimf',[0,2,3]);
- a=addmf(a,'output',3,'PB','smf',[1,3]);
- rulelist=[1 1 7 1 5 1 1;
- 1 2 7 1 3 1 1;
- 1 3 6 2 1 1 1;
- 1 4 6 2 1 1 1;
- 1 5 5 3 1 1 1;
- 1 6 4 4 2 1 1;
- 1 7 4 4 5 1 1;
-
- 2 1 7 1 5 1 1;
- 2 2 7 1 3 1 1;
- 2 3 6 2 1 1 1;
- 2 4 5 3 2 1 1;
- 2 5 5 3 2 1 1;
- 2 6 4 4 3 1 1;
- 2 7 3 4 4 1 1;
-
- 3 1 6 1 4 1 1;
- 3 2 6 2 3 1 1;
- 3 3 6 3 2 1 1;
- 3 4 5 3 2 1 1;
- 3 5 4 4 3 1 1;
- 3 6 3 5 3 1 1;
- 3 7 3 5 4 1 1;
-
- 4 1 6 2 4 1 1;
- 4 2 6 2 3 1 1;
- 4 3 5 3 3 1 1;
- 4 4 4 4 3 1 1;
- 4 5 3 5 3 1 1;
- 4 6 2 6 3 1 1;
- 4 7 2 6 4 1 1;
-
- 5 1 5 2 4 1 1;
- 5 2 5 3 4 1 1;
- 5 3 4 4 4 1 1;
- 5 4 3 5 4 1 1;
- 5 5 3 5 4 1 1;
- 5 6 2 6 4 1 1;
- 5 7 2 7 4 1 1;
-
- 6 1 5 4 7 1 1;
- 6 2 4 4 5 1 1;
- 6 3 3 5 5 1 1;
- 6 4 2 5 5 1 1;
- 6 5 2 6 5 1 1;
- 6 6 2 7 5 1 1;
- 6 7 1 7 7 1 1;
- 7 1 4 4 7 1 1;
- 7 2 4 4 6 1 1;
- 7 3 2 5 6 1 1;
- 7 4 2 6 6 1 1;
- 7 5 2 6 5 1 1;
- 7 6 1 7 5 1 1;
- 7 7 1 7 7 1 1];
-
- a=addrule(a,rulelist);
- a=setfis(a,'DefuzzMethod','centroid');
- writefis(a,'fuzzpid');
- a=readfis('fuzzpid');
- figure(1);
- plotmf(a,'input',1);
- figure(2);
- plotmf(a,'input',2);
- figure(3);
- plotmf(a,'output',1);
- figure(4);
- plotmf(a,'output',2);
- figure(5);
- plotmf(a,'output',3);
- figure(6);
- plotfis(a);
- fuzzy fuzzpid;
- showrule(a);
- ruleview fuzzpid;
复制代码 对阶跃信号进行模糊PID控制
- % Fuzzy PID Control
- clc
- close all;
- clear all;
- a=readfis('fuzzpid'); %Load fuzzpid.fis
- ts=0.001;
- sys=tf(5.235e005,[1,87.35,1.047e004,0]);
- dsys=c2d(sys,ts,'tustin');
- [num,den]=tfdata(dsys,'v');
- u_1=0.0;u_2=0.0;u_3=0.0;
- y_1=0;y_2=0;y_3=0;
- x=[0,0,0]';
- e_1=0;
- ec_1=0;
- kp0=0.40;
- kd0=1.0;
- ki0=0.0;
- for k=1:1:500
- time(k)=k*ts;
- % r(k)=sign(sin(2*pi*k*ts));
- r(k)=1;
- %Using fuzzy inference to tunning PID
- k_pid=evalfis([e_1,ec_1],a);
- kp(k)=kp0+k_pid(1);
- ki(k)=ki0+k_pid(2);
- kd(k)=kd0+k_pid(3);
- u(k)=kp(k)*x(1)+kd(k)*x(2)+ki(k)*x(3);
- % if k==300 % Adding disturbance(1.0v at time 0.3s)
- % u(k)=u(k)+1.0;
- % end
- y(k)=-den(2)*y_1-den(3)*y_2-den(4)*y_3+num(1)*u(k)+num(2)*u_1+num(3)*u_2+num(4)*u_3;
- e(k)=r(k)-y(k);
- %%%%%%%%%%%%%%Return of PID parameters%%%%%%%%%%%%%%%
- u_3=u_2;
- u_2=u_1;
- u_1=u(k);
-
- y_3=y_2;
- y_2=y_1;
- y_1=y(k);
-
- x(1)=e(k); % P比例项
- x(2)=e(k)-e_1; % D微分项
- x(3)=x(3)+e(k)*ts; % I积分项
- ec_1=x(2);
- e_2=e_1;
- e_1=e(k);
- end
- figure(1);
- plot(time,r,'b',time,y,'r');
- xlabel('time(s)');ylabel('rin,yout');
- figure(2);
- plot(time,e,'r');
- xlabel('time(s)');ylabel('error');
- figure(3);
- plot(time,u,'r');
- xlabel('time(s)');ylabel('u');
- figure(4);
- plot(time,kp,'r');
- xlabel('time(s)');ylabel('kp');
- figure(5);
- plot(time,ki,'r');
- xlabel('time(s)');ylabel('ki');
- figure(6);
- plot(time,kd,'r');
- xlabel('time(s)');ylabel('kd');
复制代码 参考文献:刘金琨,《智能控制》
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