| 摘要 |
PURPOSE:To make it possible to follow a circumstantial change sufficiently by a method wherein only the direction of change and the change itself of each of operation variables toward an optimum operating point of the titled system are determined by a computer and the precedure of setting a process input toward the determined direction is repeated to make the optimum operating point reached. CONSTITUTION:A controller H reads in measured values regarding the flow rate, the temperature or the like of each of the sections of the heat collecting system and judges whether or not the amount of the collection has reached an optimum value. For example, when the variation of the amount of heat collection goes below a predetermined value, the controller H judges the optimum value has been reached. On the other hand, when the optimum value is not reached, each of the operation variables is changed in different directions by unit amount and the amount of heat collection at that time is calculated as sensitivity. Then a set of main operation variables giving rise to the maximum value of the sensitivity is determined and a set of auxiliary operation variables is selected by estimating the amount of variations of each of the variables so as to change the variables by a predetermined amount. Thus, when the optimum amount of heat collection comes near the optimum value and becomes constant, the same operation is performed repreatedly. Accordingly, the program size can be made small and the time required for calculation can be shortened to thereby enable the heat collecting system to be controlled speedily. |
