将这段代码改写成基于灰狼优化算法的matlab代码
时间: 2024-03-23 22:38:05 浏览: 104
以下是基于灰狼优化算法的matlab代码实现:
```
function [duty, iterations] = GWO_MPPT(vpv, ipv)
% 初始化参数
num = 10; % 灰狼群体数量
iter_max = 15; % 最大迭代次数
a = 2; % 灰狼搜索参数
A = zeros(num, num);
C = zeros(num, num);
b = 2; % 控制参数
l = 1; % 初代灰狼位置
u = 10; % 初代灰狼位置
w = 0.2; % 衰减因子
dc = linspace(0, 0.7, num); % 初始控制信号
dbest = dc(l); % 最佳控制信号
counter = 0; % 计数器
iteration = 0; % 迭代次数
duty = dc(l); % 初始控制信号
iterations = iteration; % 记录迭代次数
% 计算初始灰狼位置和适应度值
for i = 1:num
A(:,i) = dc';
C(:,i) = dc';
end
for i = 1:num
for j = 1:num
d = A(:,i) - a * C(:,j);
d = max(d, 0);
d = min(d, 1);
p = vpv .* ipv .* d';
fitness(i,j) = -sum(p);
end
end
% 开始迭代
while iteration <= iter_max
for i = 1:num
% 更新控制参数b
b = 2 - iteration * ((2) / iter_max);
% 更新灰狼位置
r1 = rand();
r2 = rand();
A1 = 2 * b * r1 - b;
C1 = 2 * r2;
D_alpha = abs(C1 * dbest' - A(i,:)');
X1 = dbest' - A1 * D_alpha;
r1 = rand();
r2 = rand();
A2 = 2 * b * r1 - b;
C2 = 2 * r2;
D_beta = abs(C2 * dbest' - A(i,:)');
X2 = dbest' - A2 * D_beta;
r1 = rand();
r2 = rand();
A3 = 2 * b * r1 - b;
C3 = 2 * r2;
D_delta = abs(C3 * dbest' - A(i,:)');
X3 = dbest' - A3 * D_delta;
% 更新控制信号
D = (X1 + X2 + X3) / 3;
D = max(D, 0);
D = min(D, 1);
% 计算适应度值
p = vpv .* ipv .* D';
f = -sum(p);
% 更新最佳控制信号
if f < fitness(i)
fitness(i) = f;
A(i,:) = D;
end
end
% 更新迭代次数和最佳控制信号
iteration = iteration + 1;
[fmin, index] = min(fitness);
dbest = A(index,:);
% 更新控制信号
if counter >= 1 && counter <= 100
duty = dc(l);
counter = counter + 1;
elseif u <= num
dc(u) = dbest(u);
duty = dc(u);
u = u + 1;
counter = 1;
else
u = 1;
counter = 1;
iteration = iteration + 1;
duty = dbest(l);
dc = w * dc + (1 - w) * dbest; % 衰减控制信号
end
% 记录迭代次数
iterations = iteration;
end
end
```
这个代码使用灰狼优化算法代替了原来的TS-OMP算法,实现了光伏电池板的最大功率点追踪。在算法中,灰狼的位置代表控制信号的候选值,灰狼的适应度值代表控制信号对应的功率值。灰狼优化算法通过不断更新灰狼的位置和适应度值,找到最佳控制信号,从而达到最大功率点追踪的目的。
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