SU1116102A1 - Throughput regulator for warping machine - Google Patents

Abstract

PERFORMANCE REGULATOR OF THE BATTEN MACHINE containing the actual meter and the setpoint of the required warping speeds, through a data processing unit connected to the adjustable drive of the warping machine, characterized in that, in order to increase the control accuracy by taking into account the actual breakage of the base the speed of warping, providing a given performance with the lowest possible breakdown, and the meter of the actual speed of warping consists of dividing the unit length of the sensor base and the turned timer, wherein the length of the sensor outputs the turned base and a timer connected to the corresponding inputs of block dividing. ABOUT)

Description

1 11 The invention relates to textile industry, more specifically to regulators of the performance of the warping machine. The known performance regulator of the warping machine, which contains the actual meter and the setting device of the required warping speeds, through the data processing unit connected to the adjustable drive of the warping machine C13 However, such a controller does not provide the required control accuracy, since it does not take into account the effect of breakage. Breakage of the yarns is one of the main indicators of the quality of the flow of the process. The coefficient of useful time of the warping machine due to downtime is about 30%. An indicator of unsteady process flow in. time for warp rollers with a thread length of 3000 m reaches a value of, 6, while for a stationary process, it is not jT.e. breakage of threads is essentially non-stationary. Breaking in the warp has a multifactorial effect on both the warping process itself and the flow of subsequent technological processes: the nonstationarity of the baseness leads to fluctuations in the productivity of the warping machine and disrupts the conjugation of warping production with subsequent technological transitions - due to breakaway oscillations 22, 5 times); warp knots, caused by the elimination of warp cliffs, result in breakage in weaving, for this reason, on average, 25% of wears occur in weaving; The rigs cause the need to stop the warping machine to eliminate them, which leads to a change in the tension of the threads and to the appearance of uneven density of warping rollers. The purpose of the invention is to improve the accuracy of regulation by taking into account the actual bending of the base. The goal is achieved by the fact that in the performance controller of the warping machine, which contains the actual meter and the setpoint adjuster of the required 2 warp speeds, through the data processing unit connected to the warping machine adjustable drive, the data processing unit is designed as a calculator of the desired warping speed, ensuring the specified performance possible obelshnosti, and the gauge of the actual speed of warping consists of a dividing unit, a sensor of the length of the acquired base and a timer, while the outputs of the sensor length of experience accumulated base and a timer connected to the corresponding inputs of the divider. FIG. 1 is a block diagram of a controller; in fig. 2 is a graph of the breakage 71 and the performance of And the speed of V Vano. From the graphs (Fig. 2), where the dependences are taken for two batches of threads that have noticeably different levels of irregularity, it can be seen that, changing the characteristics of the object, switching from one relationship to another with V const leads to a sharp change in the performance and breakage of the threads . With such a change in the characteristics of an object, it is advisable to change the speed in order to maintain a given, constant performance of the warping machine with the lowest possible drag. To ensure this, it is necessary that the machine always works at a speed corresponding to the position of the operating point on the left branch of the performance P on the speed V of the machine and the performance is maintained equal to a given value. For this, the coefficient K is rewound: K y. Where Ufsr is the average speed, defined as bf, is the length released during the operation of the machine Tf; Vj is the set speed of the machine in steady state. For the average speed W of the machine, we can write W K-V and, taking the dependence K f (v) linear, we have K A -oiV, and accordingly for two consecutive (i-ro and + 1 st) steps on the speed of the machine we have: K; A -WVj ", K i, A, Hence, we define an ultrasound that provides the average speed of the machine V corresponding to the given performance:, iWi f, Ki-KUi V. -V. In the final form, at the i + 1-th step, we obtain an estimate of the required value of V: Thus, the K-and V-values of the operating mode of the machine are first determined, after which the speed step is taken. iSV; j and is determined per lK. According to the obtained values, the speed V is determined by the formula (5), ensuring the specified performance n.j and the speed Vj are set on the car. At speed V, a new winding factor K | is determined. and new values dK;. ,, dU, and then calculate ut U1 M - (- 1 Vg by the formula (5) for an estimate of H1. This operation is repeated for the entire time the machine is running, due to which the influence of The compensation of the type of change in the quality of the raw material, etc., to the actual average productivity. The regulator of the productivity of the warping machine (Fig. 1) consists of the I meter of the actual speed of the warping, including the sensor 1 of the length of the ground basis, the timer and the unit of 3 division, calculator I of the required warping speed, providing the specified performance V at "the minimum possible frequency of failure, containing blocks 4-8 divisions, blocks 9 and 10 multiplying by a constant factor, blocks 11 and 12 of memory, blocks 13-16 subtraction, block 17 of addition, block 18 of squaring, block 19 of multiplication , the square root computing unit 20, the keys 21-23 and the memory unit 24, and from the adjustable warp drive 25. The outputs of the sensor 1 and timer 2 are connected to the dividing unit 4 through the division unit 3. The outputs of timer 2, respectively, through the keys 21 and 22 are connected to the inputs of the memory block 11 and the key 23 and to the input of the memory block 12. The inputs of subtraction unit 13 are connected to the outputs of units 4 and 12, 3 its output is connected with the first input of division unit 5, the second input connected with output of subtraction unit 14. The outputs of block 5 are connected to the corresponding inputs of blocks 6 and 7 of the division, the other inputs of which are connected to the outputs of blocks 17 and 18 of addition and squaring. The outputs of the division blocks 6 and 7, corresponding to BeTctBeHHo, through the blocks 9 and 10 multiplied by a constant factor, are connected to the inputs of the division unit 8 and the subtraction unit 15. And the output of the subtracting unit 1-5 through the square root calculating unit 20 and the subtracting unit 16 are connected to one of the inputs of the division unit 8, the output of which is connected to the corresponding input of the memory unit 24 by one of the outputs of the warping machine 25. The outputs of the memory block 24 are connected to the inputs of the blocks 4, 14, 11, and 19, and the output of the key 23 is connected to the corresponding input of the memory block 24. The performance control of the warping machine is performed as follows. Sensor 1 of the length of the accumulated base measures the released length -l. At the same time, the time Tf is calculated, for which it is released by timer 2. Information from sensor 1 and timer 2 is fed to block 3 of division, where the actual operating rate of the split from the division is determined. The signal from dividing unit 3 is fed to dividing unit 4, to another input of which a signal is output from memory unit 24. The magnitude Kc of the output of block 4 is fed to subtractor 13, to another input of which a signal is received from block 12 of the memory storing the value K-. The magnitude of the DC of the subtraction unit 13 is fed to the division unit 5, to another input of which the value l V.c of the block 24 is subtracted. The inputs of the subtraction unit 14 receive signals from the memory units 24 and 11. The signals from blocks 13 and 14 of the subtraction are fed to block 5, where the ratio is 1 -t-. The output value from dividing unit 5 is supplied to multiplication unit 19, to another input of which a signal is received from memory unit 24, as well as to dividing units 6 and 7. In addition unit 17, the inputs of which are connected to division unit 4 and multiplication unit 19, the magnitude of DC is calculated. K. + V, -7). The value obtained in block 17 is squared in block 18. The outputs of blocks 17 and 18 are connected to the inputs of blocks 6 and 7 of the division, respectively. In blocks 6 and 7, the values are calculated accordingly; K. + V. -yyy 1 1 4V When the output value of dividing unit 6 is multiplied by a constant number 2 in block 9 multiplication, the output value from dividing unit 7 is multiplied in block 10 by the number recorded by the operator. In block 10, the value 4Wj is recorded, where W, is the given average speed of the machine corresponding to the given performance. The signal from block 10 is fed to subtractor 15, where the output value

/ dk 2

).

from division block 4 is subtracted from one. Then the output value

The adjustable drive 25 is transferred by the signal from memory block 24 to the new V-mode, and the value corresponding to this speed is supplied from memory block 24 to the input of block 4 26 of subtraction unit 15 is fed to block 20 for calculating the square root, the output of which is associated with input block 16 subtraction. The value of the square root of the signal from the subtraction unit 15 in subtraction unit 16 is subtracted from one, i.e. the signal from the output of the subtraction unit 16, corresponding to the value, is applied to the highlight of the 8th division, to another input of which the signal from the unit 9 is multiplied by a constant factor. The output value from block 8 by resolution from key 23 is rewritten to memory block 24, the signal from which sets the speed of adjustable drive 25. At the end of the Tf information collection interval, keys 21 and 22 close with a signal from timer 2. At the same time, V and Blocks 11 and 12 of memory are from blocks 24 and 4, and the latter are cleared. After that, the key 23 closes, and the newly calculated value of the predetermined speed is copied to the memory block 24;

1116102. 8

division. A new cycle begins. The economic effect from the use of the proposed invention is determined by the high accuracy of adjusting the performance of the warping machine by taking into account the factual breaking of the base. In addition, the invention makes it possible to improve the quality of the base and thereby reduce the yield of -. the base in weaving by about 20% and more, to clearly match the weaving and warp transitions.

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Claims (1)

DEFAULT MACHINE REGULATOR CONTROLLER, containing the actual meter and the setpoint of the required warping speed, through the data processing unit connected , 1.7 s 1 .. g J g ' f 1 £ II «| - (------------- Fig! to an adjustable drive of the warping machine, characterized in that, in order to increase the accuracy of regulation by taking into account the actual breakage of the base, the data processing unit is made in the form of a calculator of the required speed of warping, providing a given performance at the minimum possible breakage, and the meter of the actual speed of warping consists of a block division, the length sensor of the accumulated basis and the timer, while the outputs of the length sensor of the accumulated basis and the timer are connected to the corresponding inputs of the division unit.