【集装箱调度】基于粒子群算法实现考虑重量限制和时间约束的集装箱码头满载AGV自动化调度附matlab代码

算法如诗2024-06-09 10:29

% 交叉定位 - 最小二乘法定位算法模拟

% 参数设置

numIterations = 1000; % 模拟迭代次数

maxDistance = 1000; % 最远定位距离（设定范围）

speedOfSound = 343; % 声速（单位：m/s）

% 预警机坐标

source = [0, 0];

% 初始化结果

crbResults = zeros(numIterations, 1);

rmseResults = zeros(numIterations, 1);

% 模拟迭代

for i = 1:numIterations

% 随机生成无人机坐标

drone = generateRandomPosition(maxDistance);

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% 计算距离
distance1 = calculateDistance(source, drone);
distance2 = calculateDistance(source, drone);

% 添加测量误差
measurement1 = distance1 + normrnd(0, 1);
measurement2 = distance2 + normrnd(0, 1);

% 定位算法 - 最小二乘法
estimatedPosition = leastSquaresLocalization(source, measurement1, measurement2, speedOfSound);

% 计算CRB
crb = calculateCRB(source, drone, speedOfSound);
crbResults(i) = crb;

% 计算RMSE
rmse = norm(estimatedPosition - drone);
rmseResults(i) = rmse;

end

% 寻找最远定位距离

maxDistanceIdx = find(rmseResults == max(rmseResults));

maxDistanceValue = sqrt(crbResults(maxDistanceIdx));

% 显示结果

fprintf('最远定位距离：%.2f m\n', maxDistanceValue);

% 生成随机位置

function position = generateRandomPosition(maxDistance)

angle = rand * 2 * pi;

distance = rand * maxDistance;

position = distance * [cos(angle), sin(angle)];

end

% 计算距离

function distance = calculateDistance(source, target)

distance = norm(target - source);

end

% 最小二乘法定位算法

function estimatedPosition = leastSquaresLocalization(source, measurement1, measurement2, speedOfSound)

A = 2 * [source(1) - measurement1(1), source(2) - measurement1(2); ...

source(1) - measurement2(1), source(2) - measurement2(2)];

b = [measurement1(1)^2 - source(1)^2 + measurement1(2)^2 - source(2)^2 - speedOfSound^2 * measurement1(3)^2; ...

measurement2(1)^2 - source(1)^2 + measurement2(2)^2 - source(2)^2 - speedOfSound^2 * measurement2(3)^2];

estimatedPosition = (A' * A) \ (A' * b);

end

% 计算CRB（Cramér-Rao下界）

function crb = calculateCRB(source, target, speedOfSound)

distance = norm(target - source);

crb = (speedOfSound^2 / (4 * pi^2)) * (1 / distance)^2;

end