| 摘要 |
PURPOSE:To carry out metering powder with high accuracy by adopting a metering control device with a switching device of closed loop control system varied and metered the flow rate of respective flow rate regulators based on fuzzy inference to correspond with respective feeding powder material metering values. CONSTITUTION:When metering is started after setting up the instructions to a powder feeding vessel of a self-propelled receiving vessel 4 and others, driving motors 8 are actuated in the selected feeding systems, and powder materials are transferred at the prefixed number of revolutions by screw feeders 2. The number of revolutions at that time is computed by a fuzzy control section 62 of a metering control device 6, and the weight of transferred powder is sensed on the load cell 5 and fed back to the metering control device 6. The metering control device 6 computes deviations, deviation variability with time and the like from said value, and fuzzy inference is made on the fuzzy section 62 to compute the number of revolutions of the screw feeder 2 in the following control period. |
