Process operation, which is reduced to a comparable value can also lead to its borders.
Time moment corresponding to the complete transformation of input products of an agreed operation is defined as moment of operation’s physical completion (MOPC). MOPC is marked as tf on the diagrams. In turn, any process can be presented as a reduced vector operation (fig.1).
|re(t) - current value of a cumulative cost estimate of input products|
|pe(t) - current value of a cumulative cost estimate of input products|
|Figure 1: The model, which shows the signals to the boundaries of technological operations|
Input product cost for the studied technological process at a certain moment of time is determined in the following way:
re(t) - current value of a cumulative cost estimate of input products;
ts - the moment of process beginning;
pe(t) - current value of a cumulative cost estimate of input products;
tf - moment of operation’s physical completion.
RE and PE are the amplitudes of signals reflecting integral values of registered characteristics and, therefore, of input and output products in comparable values.
An impulse signal – RE is correlated with the moment of process beginning (ts) and provides re(t) function forming, and an impulse signal – PE is correlated with MOPC to form the pe(t) function.