β Scribed by H. Blomberg; L.A. Golemanov
No coin nor oath required. For personal study only.
Sumnmry--The determination of optimal storage sizes and optimal control strategy for an industrial production system is treated as a stochastic feedback optimization problem. The stochastic character of the problem is due to the randomly varying production modes of the different production units of the system. The resulting average net profit during a given interval of time and under given circumstances is taken as the value of the objective function corresponding to these circumstances. The problem is then to choose the sizes of storages and the control strategy, or the control law, in an optimal way so that the value of the objective function is maximized. However, in order to make the problem realistic and the obtained results practically applicable, the choice of control strategy has to be restricted to a carefully chosen class of feasible strategies.
The described method is used for solving some actual dimensioning and planning problems at a pulp and paper mill. The approximately optimal storage sizes and control strategy are found by means of computer simulation. It is found that deviations in the storage sizes from the optimal value lead necessarily to considerable yearly losses due to either production restrictions caused by too small containers or high price of oversized storages.
π SIMILAR VOLUMES