ATOMIC PDEVS am_fifo_queue

stored in DEVS_PATH/01-modelbase/orange_juice_canning/am_fifo_queue.m

Description

Class definition file for an atomic PDEVS model that implements a first-in-first-out queue

constructor call: obj = am_fifo_queue(name,inistates,elapsed)

atomic (superclass acts as associated simulator)

characteristic functions:

ta = tafun(obj) : time advance function - calculates time until next internal event by evaluating the states in s
deltaconffun(obj,gt) : confluent function - calculates from states s, inputs x and elapsed time elapsed the new states s', if there is an internal and an external event at the same time
deltaextfun(obj,gt) : external transition function - calculates from states s, inputs x and elapsed time elapsed the new states s'
deltaintfun(obj) : internal transition function - calculates from states s the new states s'
lambdafun(obj) : output function calculates from states s the ouptputs y

display functions:

inherited from atomic:

name : string, (unique) name of this model --> for debugging purposes max. 12 characters for "nice" debug-look ;-)
x : structure, set of inport name/input value pairs
y : structure, set of outport name/output value pairs
s : structure, set of states
sysparams : structure, set of system parameters, can be set only once at instantiation
elapsed : float, time elapsed since last transition (only for initialization)

debug_flag: 0|1|2|3, no messages|messages|steps|visualize x, y, and s (default 0)
observe_flag: 0|1, log states of atomic subcomponents or not (default 0)
observed : cell array including time stamps and a copy of s (structure of states)

has two inputs x: in1 and in2, first port for trucks, other one for signal

has one output y: out1 (send trucks to docking process)

s.sigma: for time advance

s.queue_length: length of queue

s.queue_stats: queue statistics, t/length pairs

s.requested: save request for next truck

none

global SIMUSTOP : can be used to stop allover simulation

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