MATLAB SIMEVENTS RELEASE NOTES Guia do Utilizador descarregar pdf (Página 44)

2 Building Simple Models with SimEvents Software

2-22

First entity

departs from

queue

Entity departs

from queue, which

becomes empty

One entity

departs from

queue.

Entity arrives

and stays in queue

One entity

remains in

queue.

First entity

arrives

at queue

Reopen the Time-Based Entity Generator block's dialog box and set Period to 0.3.

Run the simulation again. Now the entities arrive much faster than the server can

process them. You can make these observations from the plot:

• Every 0.3 s, the queue length increases because a new entity arrives.

• Every 1 s, the queue length decreases because the server becomes empty and

accepts an entity from the queue.

• Every 3 s, the queue length increases and then decreases in the same time

instant. The plot shows two markers at T = 0, 3, 6, and 9.

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 113 114

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MATLAB SIMEVENTS RELEASE NOTES Guia do Utilizador Página 44