| 摘要 |
The invention relates to a commercial dishwashing machine, where the detergent added to the first wash tank (12) of the wash section is controlled by a regulator (29) which controls a dosing device (22). Said regulator (29) is a fuzzy regulator, which in a learning phase determines characteristic influencing values of the system to be regulated. In the learning phase, detergent is continuously added to the wash tank (12) for a predefined period. From this, the change in the water's conductivity over that period is determined. In the subsequent operating phase, the extent to which the conductivity measured deviates from the set value is determined. Dosing takes place by fuzzy regulation dependent on the set value deviation, on the basis of the measured influencing values as fuzzy variable. Because in the learning phase all the influencing values of the diswashing machine, dosage device and detergent are taken into account, dosing is automatically optimally adjusted to prevailing conditions. |
