dynamic truck鈥揹rone routing problem for scheduled deliveries and on-demand
时间: 2023-08-12 08:02:25 浏览: 107
动态卡车-无人机路径规划问题是指在计划交付和即时需求的情况下,如何有效安排卡车和无人机的路径以完成交付任务。
在这个问题中,动态卡车-无人机路径规划需要考虑到多个因素。首先,需要根据交付任务的性质和需求类型确定使用卡车还是无人机。根据交付任务的时间要求和优先级,可以将任务分配给卡车或无人机,以最大程度地提高交付效率。
其次,需要根据交付点的位置和距离进行路径规划。通过算法和模型,可以确定卡车和无人机之间的最佳配送路径,以最小化总体成本和交付时间。这可能包括选择最短路径、减少交通堵塞和选择合适的送货点等策略。
然后,需要考虑资源利用效率。可以通过优化装载和卸载过程,使卡车和无人机的载重能力最大化,以减少行程次数和成本。同时,还可以考虑车辆和无人机的能源消耗,通过合理规划路线和使用动态调度算法来降低能源消耗。
最后,需要考虑实时任务调度和监控。根据任务和道路状况的实时变化,可以动态调整路径和分配任务,以适应不同的需求和情况。同时,应建立有效的监控系统,实时追踪卡车和无人机的位置和交付进度,以及解决可能出现的问题和异常情况。
综上所述,动态卡车-无人机路径规划问题是一个复杂的优化问题,在解决过程中需要考虑到任务类型、路径规划、资源利用效率和实时调度等关键因素,以提高交付效率和降低成本。
相关问题
SELECT dc.SPEC, tg.notes, dc.TRUCK_NO, tg.SEQ_NO, tg.ID, C.MACH_NAME, tg.CREATED_ON, tg.CREATED_BY, tg.I_E_ID, tg.FCNTR, (CASE WHEN tg.notes = '验证成功' THEN tg.FCNTR ELSE dc.CNTR END) CNTR, dc.OPERA_BY, dc.TO_POS, dc.CLASS, dc.SHIPPER, dc.CNTR_OPERATOR, dc.BILL_NO, dc.MACHNO, dc.PLG_BARCODE, dc.YGC_NO, dc.PIECES, dc.DAMAGE_TYPE, dc.PT_NUM, pc.ARR_POSITION FROM fcg_yms.truck_gate tg INNER JOIN fcg_yms.C_MACHINE c ON SUBSTR( c.MACH_NAME, 3, 6 )=SUBSTR( tg.TRUCK_NO, 3, 6 ) INNER JOIN fcg_yms.dismounting_cntr dc ON dc.TRUCK_NO = c.ID AND DATE_FORMAT(tg.CREATED_ON, "%Y-%m-%d") = DATE_FORMAT(dc.CREATED_ON, "%Y-%m-%d") AND TIMESTAMPDIFF(MINUTE, tg.CREATED_ON, dc.CREATED_ON) BETWEEN 0 AND 30 LEFT JOIN fcg_yms.PORT_CNTR pc ON pc.id = dc.cntr_id WHERE tg.CREATED_ON >= '2023-05-16' AND tg.CREATED_ON <= DATE_ADD('2023-05-25', INTERVAL 1 DAY) AND tg.I_E_ID = 'I' AND dc.CREATED_ON IS NOT NULL GROUP BY tg.SEQ_NO, dc.TRUCK_NO 优化sql
这是一个比较复杂的 SQL 查询语句,可以尝试以下优化:
1. 将 WHERE 子句中的时间范围条件提取出来作为一个变量,避免在查询中多次计算:
```
SET @start_time = '2023-05-16';
SET @end_time = DATE_ADD('2023-05-25', INTERVAL 1 DAY);
```
2. 在 LEFT JOIN 中,将 ON 条件中的 cntr_id 改为 dc.ID,可以避免不必要的表连接:
```
LEFT JOIN fcg_yms.PORT_CNTR pc ON pc.ID = dc.ID
```
3. 使用 EXISTS 子查询代替 INNER JOIN:
```
SELECT dc.SPEC, tg.notes, dc.TRUCK_NO, tg.SEQ_NO, tg.ID, C.MACH_NAME, tg.CREATED_ON, tg.CREATED_BY, tg.I_E_ID, tg.FCNTR, (CASE WHEN tg.notes = '验证成功' THEN tg.FCNTR ELSE dc.CNTR END) CNTR, dc.OPERA_BY, dc.TO_POS, dc.CLASS, dc.SHIPPER, dc.CNTR_OPERATOR, dc.BILL_NO, dc.MACHNO, dc.PLG_BARCODE, dc.YGC_NO, dc.PIECES, dc.DAMAGE_TYPE, dc.PT_NUM, pc.ARR_POSITION
FROM fcg_yms.truck_gate tg
INNER JOIN fcg_yms.C_MACHINE c ON SUBSTR(c.MACH_NAME, 3, 6) = SUBSTR(tg.TRUCK_NO, 3, 6)
INNER JOIN fcg_yms.dismounting_cntr dc ON dc.TRUCK_NO = c.ID
WHERE tg.CREATED_ON >= @start_time AND tg.CREATED_ON <= @end_time AND tg.I_E_ID = 'I' AND EXISTS (
SELECT 1 FROM fcg_yms.dismounting_cntr dc2 WHERE dc2.TRUCK_NO = c.ID AND DATE_FORMAT(tg.CREATED_ON, "%Y-%m-%d") = DATE_FORMAT(dc2.CREATED_ON, "%Y-%m-%d") AND TIMESTAMPDIFF(MINUTE, tg.CREATED_ON, dc2.CREATED_ON) BETWEEN 0 AND 30
) AND dc.CREATED_ON IS NOT NULL
GROUP BY tg.SEQ_NO, dc.TRUCK_NO
```
Finite element analysis and optimization design of a steering arm for a heavy truck
ChitGPT: The finite element analysis and optimization design of a steering arm for a heavy truck involves the use of computer modeling to simulate the structural behavior of the component under different loading conditions. Through this process, engineers can identify weaknesses in the design and refine it to improve durability and performance. Is there anything else you would like to know about this topic?
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