An Automated Guided Vehicle System $($AGVS$)$ will be used to satisfy the material flows indicated in the

from$-$to chart below, which shows deliveries per hour between stations $($before the slash$)$ and distances

in meters between stations $($after the slash$).$ Moves indicated by $$L$$ are loaded moves; moves indicated

by $$E$$ are empty moves.

It is assumed that the availability $=0\mathrm{.}85,$ traffic factor $=0\mathrm{.}80$ and efficiency $=0\mathrm{.}95.$

Speed of an AGV $=0\mathrm{.}75$m$/$s$.$

If the load handling time per delivery cycle is $1\mathrm{.}0$ min $,$ determine the number of vehicles needed to

satisfy the indicated deliveries per hour.

From$/$To Chart

To $1234$

From $10/07$L$/907$L$/1008$L$/75$

$24$E$/900/00/$NA $4$L$/80$

$35$E$/1000/$NA $0/00/$NA

$48$E$/650/$NA $0/$NA $0/0$

numberofde liveirespe rhourperve hicle

Noofdelive iresrequir edperhour NoofAGV $\text{'}$s $=$

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