SU591716A1 - Apparatus for weight multicomponent metering - Google Patents

Description

neither does the doping component through the reader are connected to one of the inputs of the divider, the second input of which is connected to the output of the adder connected to the outputs of the digital devices of the metering devices of all components, and the third input of the divider is connected to the first output of the averaging element of the prediction integral unit component, the first input of the divider of this block is connected with the output of the digital nature of this component, the second input of the divider is connected to the output of the reader, one input of which is connected the sensor of the content of the doping component and the other input is connected to the same sensor through the first memory cell, the third input of the divider is connected to the output of the adder, and the output of the divider is connected to the first inputs of the reader and averaging element, the second output of which is connected to the input the second cell of memory, its output connected to the second input of you reader. The dose in the device is determined by the formula:, (+ o1p (u1) () x (oi) where x: {+1) a x (4) Lx (i) - X (P1 1F (4) -F (o1sG1 (; Here, ZiF (g) is the specified and actual percentage of the diruyuk of its component in the .. product nnaBKiifP (.j) -F & ktkchesky content of the diryuk of the component in the melting product, respectively, before and after its introduction, x (d) and XSO, integral characteristics the doping component, respectively, is actually iG predicted, P (4) IR (n) is the masses of the melting product and the doping component, respectively, 0 | b. are the exponential smoothing coefficients According to the law, c is the coefficient of taking into account the temperature of the melting product, the index (i) corresponds to the previous melting index (m i) - the foregoing. The drawing shows a block diagram of a device for dosing one alloying component. The device contains portioned strain gauges A, in which includes strain gauges 1. digital measuring devices 2, comparison circuit 3, adjustable setting device 4 and feeder 5, Block B for determining the setting of the dose of the alloying component contains setting reference 6 for the percentage of doping in the product melting points, sensor 7 of the actual percentage of this impurity and melting product temperature, reader 8, adder 9 of the product mass of melting and divider 10 of the required increment are alloyed. impurity on the integral characteristic of the component containing this impurity. The block In the prediction of the quality of a component of a doped component contains a memory cell 11, a subtractor 12, a divider 13 of the change in the content of doping impurities for the flow rate of the component that caused this change, a memory cell 14 and a subtractor 15, an element 16 of averaging (smoothing) npo.rv of the integrated component characteristic . . The device works as follows. The percentage of legiruki them when; The months in the melting product are set at the setting device 6. As the components are recruited, the signals of the respective sensors 1 are measured by digital devices 2 and the results of the formation are transmitted to the adder 9, in which the mass of the product of the melting output to the divider 10 is determined using empirical coefficients. After that, the doping component set begins according to the task calculated by unit B. First, information from sensor 7, which determines the actual percentage of dopant in the melting product and temperatures of this product enters subtractor 8, which determines the difference between the desired and initial content of dopant in the melting product, the required increment of the dopant and introduces it into divider Y. In divider 10, the difference is multiplied by the mass of the melting product and the number of times the predicted integral characteristic of the doping component, determined by the block b. Block B first calculates the integral characteristic of the alloying component in the previous melt, and then the forecast) - its integral characteristic for the current strip is ruled. To this end, first, from sensor 7, data on the actual content of the dopant in the melting product is supplied to subtractor 12 through the memory cell 11 before entering the lung component of the component, and then, after this component is introduced, data from sensor 7, mine, memory about the new, changing impurity content and product melting temperature. Subtractor 12 calculates and feeds to divider 13 the difference in impurity content before and after entering the alloying component, i.e. increment of impurity as a result of the input of this component. In divider 13, where data about melting tec- ture are supplied from. sensor 7

and about the mass of the product, the flux — from Summara 9, the above-mentioned air distribution is multiplied by the mass of the product. The melting factor and coefficient taking into account its temperature ,. and is divided by the mass of the alloying component obtained from the digital device 2, Shz1, which increases this increment.

The resulting ratio, which is the integral characteristic of the component corresponding to the previous melting, is fed to the first inputs of the averaging element 16 and the reader 15. To the second input of the calculator 15, the integral characteristic predicted for the previous melting is stored in the cell 14 and there is also subtracted from the actual integral characteristic for the previous melting, which is the error of the previous prediction thus calculated: it is also entered into element 16 and is used for definiteness by averaging (smoothing) by law close to exponential, pro.gnoziruemoy integral characteristic component for melting current.

From element 16, the predicted integral characteristic of the component is entered into divider 10, which calculates the current setting of the component dose, and memory 14 for use in predicting the next, next, melting.

Thus, in spite of possible random perturbations, the predicted integral characteristics change from melting to melting not in jumps, but smoothly - according to a law close to exponential.

From the divider 10, the task is fed to the corrected dose setter 4, while the feeder 5 of the dispenser of the alloying component is turned on. The signal of sensor 1, proportional to the mass and measurements of the digital device 2, discharged from the output of this device enters the comparison circuit 3, to the second input of which a set reference is entered from the adjusted setting device 4. If the values of the given and the actual masses coincide, the comparison circuit 3 switches off the feeder 5.,

Thus, in order to ensure the desired chemical composition of the melting product, the proposed device takes into account the actual content of the dopant in the melting product prior to loading the alloy component, depending on other components; determines the integral characteristic of the doping component, depending on the content of the impurity dopant in it and on the degree of assimilation of this nent, which is equal to the chemical, chemical and melting product temperatures; It agrees (smoothes) the predicted integrals in order to avoid errors caused by random deviations.

The device can also be used to dose several dopants by adding to it a block of p & equations with two or more unknowns.

Invention Formula

Device for weighing multicomponent. dosing, for example, converter float components, containing dispensers of components with digital devices, adjustable setting devices and comparison elements, characterized in that, in order to ensure the specified chemical composition of the melting product, it is equipped with a unit for determining the dose of each alloying component, made in the form presetting of the content of the alloying component in the melting product, sensors of the content of the alloying component and the temperature of the product of melting, the splitter and the adder, and the prediction block the integral characteristic of the alloyed component, made in the form of two memory cells, two exchangers, a divider and an averaging element, and in the unit for determining the dose setting, the outputs of the setter for the content of the alloying component in the melting product and the sensor for the content of the alloying component are connected to one of the the inputs of the divider, the second input of which is connected to the output of the adder connected to the outputs of the digital devices of the metering devices of all components, and the third input of the divider is connected to the first output of the electrical ment averaging block prediction integral characteristic legiruyudego component ,, and a first input of the block divider coupled to the output of the digital device of this component, a second input connected to the output of the divider you readers, one input of which is connected to the sensor alloying present koktonenta ,. the other input is connected to the same sensor through the first memory cell, the third input of the divider is connected to the output of the adder, and the output of the divider is connected to the nepBbiM inputs of the subtractor and the averaging element, the second output of which is connected to the input of the second memory cell. connected to the second input of the subtractor.

Sources of information taken into account in the examination:

1. Copyright certificate № 334487, cl. q O1 Q 13/28, 1970.

2. US patent No. 3254728, cl. 177-1 1966.

3. Copyright certificate № 365582, cl. From 01 0.13 / 28, 1970.