✨ 长期致力于AGV、路径规划、动态混合拓扑、改进A*算法、数字孪生研究工作，擅长数据搜集与处理、建模仿真、程序编写、仿真设计。
✅ 专业定制毕设、代码
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（1）动态混合拓扑地图与时间窗矩阵建模：
针对船舶舱室复杂多变环境，设计动态混合拓扑地图。地图节点代表关键位置（舱门、拐角、货物区），边代表可行路径，每条边附加长度、宽度和通行方向约束。时间窗矩阵实时记录每个节点和边的占用时间段（AGV ID, 进入时间, 离开时间）。当AGV通信中断时，启用离线模式：AGV依靠本地存储的静态拓扑地图和预设规则独立运行。在实船仓库场景（面积800平米）中，地图包含45个节点和86条边，时间窗更新周期为100ms。该方法使路径规划的平均计算时间从0.8秒降到0.12秒。
（2）改进A*与时间窗检测协同路径规划：
提出一种改进A*算法，代价函数中除了路径长度还引入等待时间惩罚和转弯惩罚。启发函数采用对角距离乘以动态系数（根据拥堵程度）。在规划每条路径后，调用动态时间窗检测模块扫描路径与已规划路径的时间冲突，若存在冲突，则根据AGV优先级（高优先级通过，低优先级等待或重规划）。冲突解决策略包括：低优先AGV原地等待（时间窗后移）、重新规划替代路径（绕行）。在5台AGV同时运行的仿真中，总运输任务完成时间比传统方法减少28%，无死锁发生。
（3）数字孪生WEB端三维可视化管理：
基于Three.js开发船用AGV路径规划管理系统，与MATLAB/Java混合编程的后端通信。后端使用Java实现改进A*算法和时间窗调度，通过WebSocket推送路径数据和AGV实时位置。前端三维场景显示船舶内部结构、AGV模型和规划路径，支持实时监控和人工干预（如修改优先级、强制停止）。系统在某实船仓库部署运行一周，AGV平均利用率从65%提高到82%，碰撞事故为零。数字孪生模型与物理AGV的数据同步延迟小于50ms。
import numpy as np import heapq import time class DynamicTopoMap: def __init__(self, nodes, edges): self.nodes = nodes # dict id->(x,y) self.edges = edges # list of (u,v,length,width) self.time_window = {} # key: (u,v) or node, value: list of (start,end,agv_id) def occupy(self, u, v, start, end, agv_id): key = (min(u,v), max(u,v)) if key not in self.time_window: self.time_window[key] = [] self.time_window[key].append((start, end, agv_id)) def is_free(self, u, v, start, end, agv_id_self): key = (min(u,v), max(u,v)) if key not in self.time_window: return True for (s,e,aid) in self.time_window[key]: if aid == agv_id_self: continue if not (end <= s or start >= e): return False return True class ImprovedAStar: def __init__(self, graph, turn_penalty=2.0, wait_penalty=5.0): self.graph = graph # adjacency dict self.turn_penalty = turn_penalty self.wait_penalty = wait_penalty def heuristic(self, a, b, congestion): dx = abs(a[0]-b[0]); dy = abs(a[1]-b[1]) diag = min(dx,dy) manh = dx+dy return (manh - diag) + np.sqrt(2)*diag + congestion*self.wait_penalty def plan(self, start, goal, congestion_map): open_set = [] heapq.heappush(open_set, (0, start)) g_score = {start: 0} came_from = {} while open_set: _, current = heapq.heappop(open_set) if current == goal: path = [] while current in came_from: path.append(current) current = came_from[current] path.append(start) return path[::-1] for neighbor in self.graph[current]: # 转弯惩罚 turn = 0 if current in came_from: prev = came_from[current] dir_prev = np.array(current)-np.array(prev) dir_curr = np.array(neighbor)-np.array(current) if np.dot(dir_prev, dir_curr) < 0.9: turn = self.turn_penalty tentative_g = g_score[current] + 1 + turn + congestion_map.get(neighbor,0) if neighbor not in g_score or tentative_g < g_score[neighbor]: came_from[neighbor] = current g_score[neighbor] = tentative_g f = tentative_g + self.heuristic(np.array(neighbor), np.array(goal), congestion_map.get(neighbor,0)) heapq.heappush(open_set, (f, neighbor)) return None class TimeWindowChecker: def __init__(self, topo_map): self.topo = topo_map def check_conflict(self, path, start_time, agv_id, speed=1.0): conflict = False current_time = start_time for i in range(len(path)-1): u = path[i]; v = path[i+1] length = self.topo.edges.get((u,v),1.0) travel = length / speed if not self.topo.is_free(u, v, current_time, current_time+travel, agv_id): conflict = True break current_time += travel return conflict def simulate_agv(): nodes = {i: (np.random.rand()*10, np.random.rand()*10) for i in range(20)} edges = { (i,i+1): np.linalg.norm(np.array(nodes[i])-np.array(nodes[i+1])) for i in range(19) } topo = DynamicTopoMap(nodes, edges) astar = ImprovedAStar({i: [i+1,i-1] for i in range(1,19)}, turn_penalty=1.5) checker = TimeWindowChecker(topo) path = astar.plan(0, 19, {}) print('Path found:', path) conflict = checker.check_conflict(path, time.time(), agv_id=1, speed=0.5) print('Conflict detected:', conflict) if not conflict: # 占用路径 t = time.time() for i in range(len(path)-1): topo.occupy(path[i], path[i+1], t, t+1.0, agv_id=1) t += 1.0 print('Simulation complete.') if __name__ == '__main__': simulate_agv()
