24小时热门版块排行榜    

查看: 2511  |  回复: 1

hxlxmc

新虫 (初入文坛)

[求助] JA磁滞回线模型 已有1人参与

求助:
       粒子群优化算法怎样与JA磁滞回线模型结合起来啊?或者怎样把JA模型的公式编成一个MATLAB函数文件?
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

lxshisan

新虫 (初入文坛)

【答案】应助回帖

function [x,y]=lx17()
u0=4*pi*(1e-7);
alpha=7.092e-4;
x12=linspace(0,2e4,100);
% x12=linspace(3000,4000,100);
x13=linspace(2e4,-2e4,200);
x14=linspace(-2e4,2e4,100);
M0=[0.0001,0];
% 样本1
[x,y11]=ode45(@ode_fun11,x12,M0);
[x,y12]=ode45(@ode_fun12,x13,[y11(100,1),y11(100,2)]);
[x,y13]=ode45(@ode_fun11,x14,[y12(200,1),y12(200,2)]);

figure;
plot(x13',y12(:,2),x14',y13(:,2));
xlabel('H');
ylabel('M');
title('样本1');
figure;
plot(x13',u0*(x13'+y12(:,2)),x14',u0*(x14'+y13(:,2)));
xlabel('H');
ylabel('B');
title('样本1');

% 样本2
[x,y21]=ode45(@ode_fun21,x12,M0);
[x,y22]=ode45(@ode_fun22,x13,[y21(100,1),y21(100,2)]);
[x,y23]=ode45(@ode_fun21,x14,[y22(200,1),y22(200,2)]);

figure;
plot(x13',y22(:,2),x14',y23(:,2));
xlabel('H');
ylabel('M');
title('样本2');
figure;
plot(x13',u0*(x13'+y22(:,2)),x14',u0*(x14'+y23(:,2)));
xlabel('H');
ylabel('B');
title('样本2');

% 样本3;
[x,y31]=ode45(@ode_fun31,x12,M0);
[x,y32]=ode45(@ode_fun32,x13,[y31(100,1),y31(100,2)]);
[x,y33]=ode45(@ode_fun31,x14,[y32(200,1),y32(200,2)]);

figure;
plot(x13',y32(:,2),x14',y33(:,2));
xlabel('H');
ylabel('M');
title('样本3');
figure;
plot(x13',u0*(x13'+y32(:,2)),x14',u0*(x14'+y33(:,2)));
xlabel('H');
ylabel('B');
title('样本3');
figure
plot(x13',u0*(x13'+y12(:,2)),'g',x14',u0*(x14'+y13(:,2)),'g',x13',u0*(x13'+y22(:,2)),'r',x14',u0*(x14'+y23(:,2)),'r',x13',u0*(x13'+y32(:,2)),'b',x14',u0*(x14'+y33(:,2)),'b');
grid on
% [x,Man]=ode45(@ode_fun,x12,0.0001);
%
% figure;
% plot(x,Man(:,1))
end
%样本1磁场增大求解方程
function dy=ode_fun11(x,y)
ms=1.5743e6;
a=499;
alpha=7.092e-4;
k=1154.6;
c=0.0198;
deta=1;
km=k*(1-0.96*(y(2)/ms)^2);
dy(1,1)=ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2)/(1-alpha*ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2));
dy(2,1)=(-1/km/deta*(y(1)-y(2))-c/(1-c)*dy(1,1))/(alpha/km/deta*(y(1)-y(2))-1/(1-c));
end
%样本1磁场减小求解方程
function dy=ode_fun12(x,y)
ms=1.5743e6;
a=499;
alpha=7.092e-4;
k=1154.6;
c=0.0198;
deta=-1;
km=k*(1-0.96*(y(2)/ms)^2);
dy(1,1)=ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2)/(1-alpha*ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2));
dy(2,1)=(-1/km/deta*(y(1)-y(2))-c/(1-c)*dy(1,1))/(alpha/km/deta*(y(1)-y(2))-1/(1-c));
end
%样本2求磁场增大解方程
function dy=ode_fun21(x,y)
ms=1.5755e6;
a=1408.1;
alpha=2.4e-3;
k=2356.5;
c=0.0382;
deta=1;
km=k*(1-0.96*(y(2)/ms)^2);
dy(1,1)=ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2)/(1-alpha*ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2));
dy(2,1)=(-1/km/deta*(y(1)-y(2))-c/(1-c)*dy(1,1))/(alpha/km/deta*(y(1)-y(2))-1/(1-c));
end
%样本2求磁场减小求解方程
function dy=ode_fun22(x,y)
ms=1.5755e6;
a=1408.1;
alpha=2.4e-3;
k=2356.5;
c=0.0382;
deta=-1;
km=k*(1-0.96*(y(2)/ms)^2);
dy(1,1)=ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2)/(1-alpha*ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2));
dy(2,1)=(-1/km/deta*(y(1)-y(2))-c/(1-c)*dy(1,1))/(alpha/km/deta*(y(1)-y(2))-1/(1-c));
end
%样本3求增大解方程
function dy=ode_fun31(x,y)
ms=1.5827e6;
a=1017.9;
alpha=1.2e-3;
k=2735.8;
c=0.1051;
deta=1;
km=k*(1-0.96*(y(2)/ms)^2);
dy(1,1)=ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2)/(1-alpha*ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2));
dy(2,1)=(-1/km/deta*(y(1)-y(2))-c/(1-c)*dy(1,1))/(alpha/km/deta*(y(1)-y(2))-1/(1-c));
end
%样本3求减小解方程
function dy=ode_fun32(x,y)
ms=1.5827e6;
a=1017.9;
alpha=1.2e-3;
k=2735.8;
c=0.1051;
deta=-1;
km=k*(1-0.96*(y(2)/ms)^2);
dy(1,1)=ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2)/(1-alpha*ms*(-(csch((x+alpha*y(1))/a))^2/a+a/(x+alpha*y(1))^2));
dy(2,1)=(-1/km/deta*(y(1)-y(2))-c/(1-c)*dy(1,1))/(alpha/km/deta*(y(1)-y(2))-1/(1-c));
end
2楼2016-09-12 23:53:29
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 hxlxmc 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 07化学280分求调剂 +4 722865 2026-03-23 4/200 2026-03-24 00:01 by chixmc
[考研] 265求调剂 +10 梁梁校校 2026-03-17 10/500 2026-03-23 21:17 by 一切OK
[考研] 一志愿南航材料专317分求调剂 +3 炸呀炸呀炸薯条 2026-03-23 3/150 2026-03-23 20:47 by pswait
[考研] 工科0856求调剂 +5 沐析汀汀 2026-03-21 5/250 2026-03-23 17:56 by 海瑟薇-
[考研] 求调剂一志愿武汉理工大学材料工程(085601) +3 WW.' 2026-03-23 5/250 2026-03-23 17:18 by 枫翼ljj
[考研] 0854电子信息求调剂 324 +3 Promise-jyl 2026-03-23 3/150 2026-03-23 13:43 by wangkm
[考研] 280分求调剂 一志愿085802 +4 PUMPT 2026-03-22 7/350 2026-03-22 22:13 by 星空星月
[考研] 311求调剂 +6 冬十三 2026-03-18 6/300 2026-03-22 20:18 by edmund7
[考研] 307求调剂 +11 冷笙123 2026-03-17 11/550 2026-03-22 20:16 by edmund7
[考研] 求调剂 +5 Zhangbod 2026-03-21 7/350 2026-03-22 13:13 by Zhangbod
[考研] 考研调剂 +4 来好运来来来 2026-03-21 4/200 2026-03-22 12:15 by 星空星月
[考研] 297求调剂 +11 戏精丹丹丹 2026-03-17 12/600 2026-03-21 17:47 by ColorlessPI
[考研] 296求调剂 +4 www_q 2026-03-20 4/200 2026-03-21 17:26 by 学员8dgXkO
[考研] 求调剂 +3 白QF 2026-03-21 3/150 2026-03-21 13:12 by zhukairuo
[考研] 330求调剂0854 +3 assdll 2026-03-21 3/150 2026-03-21 13:01 by 搏击518
[考研] 083200学硕321分一志愿暨南大学求调剂 +3 innocenceF 2026-03-17 3/150 2026-03-21 02:35 by JourneyLucky
[考研] 一志愿武理材料305分求调剂 +6 想上岸的鲤鱼 2026-03-18 7/350 2026-03-21 01:03 by JourneyLucky
[考研] 330求调剂 +4 小材化本科 2026-03-18 4/200 2026-03-20 23:13 by JourneyLucky
[考研] 材料工程专硕调剂 +5 204818@lcx 2026-03-17 6/300 2026-03-18 22:55 by 204818@lcx
[考研] 材料,纺织,生物(0856、0710),化学招生啦 +3 Eember. 2026-03-17 9/450 2026-03-18 10:28 by Eember.
信息提示
请填处理意见