无人机协同路径规划matlab
时间: 2023-10-21 12:05:11 浏览: 109
您可以使用MATLAB中的A*算法来实现无人机协同路径规划。A*算法是一种启发式搜索算法,可以在图形中找到最短路径。您需要将无人机的起点和终点作为输入,并使用A*算法计算出路径。然后,您可以将路径分配给每个无人机,以便它们可以避免碰撞并协同工作。
以下是一个简单的MATLAB代码示例,用于实现A*算法:
```matlab
function [path, cost] = A_star(start, goal, map)
% start: 起点坐标
% goal: 终点坐标
% map: 地图
% 初始化open和close列表
open_list = [];
close_list = [];
% 将起点添加到open列表
start_node.g = 0;
start_node.h = heuristic(start, goal);
start_node.f = start_node.g + start_node.h;
start_node.pos = start;
open_list = [open_list, start_node];
while ~isempty(open_list)
% 从open列表中选择f值最小的节点
[min_f, idx] = min([open_list.f]);
current_node = open_list(idx);
% 如果当前节点是终点,则返回路径和代价
if isequal(current_node.pos, goal)
path = backtrack(current_node);
cost = current_node.g;
return;
end
% 将当前节点从open列表中删除,并添加到close列表中
open_list(idx) = [];
close_list = [close_list, current_node];
% 扩展当前节点的邻居
neighbors = get_neighbors(current_node, map);
for i = 1:length(neighbors)
neighbor = neighbors(i);
% 如果邻居节点已经在close列表中,则跳过
if ismember(neighbor.pos, [close_list.pos])
continue;
end
% 计算邻居节点的代价
tentative_g = current_node.g + distance(current_node.pos, neighbor.pos);
% 如果邻居节点不在open列表中,则添加到open列表中
if ~ismember(neighbor.pos, [open_list.pos])
neighbor.g = tentative_g;
neighbor.h = heuristic(neighbor.pos, goal);
neighbor.f = neighbor.g + neighbor.h;
neighbor.parent = current_node;
open_list = [open_list, neighbor];
else
% 如果邻居节点已经在open列表中,则更新其代价和父节点
idx = find([open_list.pos] == neighbor.pos);
if tentative_g < open_list(idx).g
open_list(idx).g = tentative_g;
open_list(idx).f = tentative_g + open_list(idx).h;
open_list(idx).parent = current_node;
end
end
end
end
% 如果open列表为空,则无法找到路径
error('No path found.');
% 计算两个点之间的欧几里得距离
function d = distance(p1, p2)
d = norm(p1 - p2);
% 计算启发式函数的值(这里使用欧几里得距离)
function h = heuristic(p1, p2)
h = distance(p1, p2);
% 回溯路径
function path = backtrack(node)
path = [];
while ~isempty(node.parent)
path = [node.pos, path];
node = node.parent;
end
path = [node.pos, path];
% 获取当前节点的邻居
function neighbors = get_neighbors(node, map)
neighbors = [];
for i = -1:1
for j = -1:1
if i == 0 && j == 0
continue;
end
pos = node.pos + [i, j];
if pos(1) < 1 || pos(1) > size(map, 1) || pos(2) < 1 || pos(2) > size(map, 2)
continue;
end
if map(pos(1), pos(2)) == 0
continue;
end
neighbor.g = 0;
neighbor.h = 0;
neighbor.f = 0;
neighbor.pos = pos;
neighbors = [neighbors, neighbor];
end
end
```
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