Controlling method and a measuring mixer for liquids and powders
First Claim
1. A flowing material measuring device, comprising:
- a supply container containing a flowable material;
a flow regulator connected to an outlet of said flow container for regulating a flow of said flowable material in at least three non-zero flow quantities;
a receiving container receiving said flowable material from said flow regulator;
a detector associated with said receiving container for measuring a quantity of material received by said receiving container;
a control unit receiving an output of said detector and including means for deriving a deviation between said measured quantity and a target value and a time variation of said deviation and further including means for setting a flow quantity in accordance with said deviation and said time variation of said deviation, said set flow quantity controlling said flow regulator.
2 Assignments
0 Petitions
Accused Products
Abstract
A measuring mixer for use with either liquids or powders in which different supply systems supply different stock liquids or powders to a receiving container from supply containers. A continuously variable flow regulator is associated with each supply container. The cumulative weight of the receiving container is measured and compared with a target weight. Then a computation section calculates a desired flow rate based upon both the deviation from the target weight and a time variation thereof. This calculation is preferably done according to fuzzy inference. The desired flow rate is then used to control a selected one of the flow regulators so that the measurement is sequentially performed between supply systems. Optionally, the receiving container can be movable between the different supply systems.
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Citations
29 Claims
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1. A flowing material measuring device, comprising:
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a supply container containing a flowable material; a flow regulator connected to an outlet of said flow container for regulating a flow of said flowable material in at least three non-zero flow quantities; a receiving container receiving said flowable material from said flow regulator; a detector associated with said receiving container for measuring a quantity of material received by said receiving container; a control unit receiving an output of said detector and including means for deriving a deviation between said measured quantity and a target value and a time variation of said deviation and further including means for setting a flow quantity in accordance with said deviation and said time variation of said deviation, said set flow quantity controlling said flow regulator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of measuring a flowable material, comprising the steps of:
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regulating a flow rate of a quantity of a flowable material into a receiving container according to at least three non-zero flow rates; measuring a quantity of material received in said receiving container; comparing said measured quantity with a target quantity to produce a deviation value; computing a time variation of said deviation value; and setting said regulated flow rate in response to said comparing and computing steps. - View Dependent Claims (9)
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10. A flowing material measuring mixer, comprising:
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at least two supply systems each comprising a supply container containing a respective flowable material and a flow velocity regulator connected to an outlet of said supply container for varying a flow of said flowable material therethrough in at least three non-zero increments; a receiving container at least connectable to outlets of each of said flow velocity, regulators for receiving said flowable materials from each of said supply systems; a measuring device associated with said receiving container for measuring a quantity of any of said flowable materials received into said receiving container; a measurement control unit receiving a target quantity and an output of said measuring device and deriving a deviation therebetween and including means for computing a desired flow quantity in accordance with said deviation; and means for selectively applying said desired flow quantity to a selected one of said flow velocity controllers. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification