Automated Material Handling

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Automated Material Handling

• Automated Guided Vehicles

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Automated Guided Vehicles
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Automated Guided Vehicles (AGVs)

• ????????????????????????
• Battery-powered
• Automatically Steered
• Follow defined pathway
• Programmable
• Driverless

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Types of AGVs

• Automated Guided Train
• AGV Pallet truck
• Unit load Carrier

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Types of AGVs

• Automated guided Train

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Types of AGVs

• AGV Pallet truck

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Types of AGVs

• AGV Pallet truck

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Types of AGVs

• Unit load Carrier

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Vehicle Guidance Technology

• Imbedded Guide Wires and Paint Strips
• Electromagnetic
• Visual Line , Infrared, Laser

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Vehicle Guidance Technology

• Self-Guided Vehicles (SGVs)
• Auto navigation
• Advantage gt more Flexible way

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Vehicle Management

• Traffic Control
• On-board vehicle sensing forward Sensing
• Zone Control

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Analysis of Vehicle-Based Systems

• The time for a typical delivery cycle in the
  operation of a vehicle-based transport system
• Loading at the pickup station
• Travel time to the drop-off station
• Unloading at the drop-off station
• Empty travel time

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Analysis of Vehicle-Based Systems

• The total time per delivery per vehicle
• Tc TL Ld TU Le
• ?c ?e
• When
• Tc delivery Cycle time (Time/del)
• TL time to load at load station (min)
• Ld distance between load and unload
  station(m,ft)
• ?c carrier velocity (m/min , ft/min)
• Tu time to unload at unload station (min)
• Le distance the travel empty
• ?e Empty velocity (m/min , ft/min)

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Analysis of Vehicle-Based Systems

• Available Time
• AT 60 A Tf E
• When
• AT Available Time (min/hr per Vehicle)
• A Availability
• Tf Traffic factor
• E Worker Efficiency

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Analysis of Vehicle-Based Systems

• The rate of delivery per vehicle
• Rdv AT
• Tc
• Work Load WL Rf Tc
• Rf Specific flow rate of total delivery per
  hour (de/hr)
• Tc delivery cycle Time

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Analysis of Vehicle-Based Systems

• Number of carrier required
• nc WL nc Rf
• AT Rdv

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EXAMPLE

• AGVs ??????????? ??????
• Loading time at Load station 0.75 min,
• Unloading time at unload station 0.50 min
• ??????? ??????????? 40 del/hr ???????? 50
  m/min(3km/hr)
• availability 0.95 traffic factor 0.90 E 1.0
• Determine a) travel distance loaded and empty
• b) Ideal delivery cycle time c) number of vehicle

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EXAMPLE
Unload
20
55
40
20
load
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EXAMPLE 10.1

• Sol ????????????????
• Ld 354035 110 m
• Le 204020 80 m
• b) Tc 0.75 110/50 0.50 80/50
• 5.05 min
• c) WL 40(5.05) 202 min/hr
• AT 60 (0.95) (0.90)(1.0)
• 51.3 min/hr per vehicle
• nc WL/AT 202/51.3 3.94 vehicles

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EXAMPLE 10.2
30
50
35
50
15
10
30
30
10
10
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• From-to Chart
• To 1 2 3 4 5
• From 1 - 9L/50 5L/120 6L/205 0
• 2 4E/110 9L/80
• 3 7E/200 2L/85 3L/170
• 4 8L/85
• 5

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• ????? (?????? x ???????) / ??????????????????
• Ld n1xm1 n2xm2 .
• n1n2n3.
• (9x 50)(5x120)(6205)(9x80)(2x85)
• (3x170) (8x85) /(9569238)
• 103.8 m
• Le (4x110) (7x200) / (47)
• 167.27 m

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• TL 0.75 TE 0.5
• TC 0.75 103.8/50 0.5 107.2/50
• TC
• WL 40( TC) min/hr
• AT 60 (0.95) (0.90)(1.0)
• min/hr per vehicle
• nc WL/AT / vehicles

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Exercise

• Ex 10.8 AGVs ?????????????????????????? ??????
  200 ???? ???????????????????? 150 ?. ???? load
  ??? unload 24 ?????? ????????????? 1
  ?/??????
• ???????? Traffic factor 0.9 ??? A 0.95 E 1.0
• ????????????????????? ???????????????? 30
  ??????/??. del/hr

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Home Work

• Text Book ???? 323
• ??? 10.4 -10.17