CS252010B1 - Connections for digital frequency control of chemical fiber splitting lines - Google Patents

Abstract

The purpose of the connection is to maintain the set constant speed ratio of the line drives with high accuracy in steady states and transient states during line start-up and transition from loading to operating speed. The set dividing poiper remains preserved even with different dynamic parameters of the individual line drives. The connection allows changing the dividing ratio between any drives in the line, both at rest and during line operation without mechanical gears. The connection can be used mainly for controlling dividing lines and wherever high control accuracy is required even in transient states and when setting different speed ratios between individual drives.

Description

252010

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the connection of digital frequency control of chemical fiber splitting lines.

The prior art wiring management of the longer chemical fiber lines is converted so that the start of the line equipment is continuous, controlled only by current limitation without mutual el. binding in transition states. The child's ratio is adjusted by changing the speed gear through mechanical gears that increase the power requirements. energy. Due to the dynamic parameters of individual machines, it is not possible to control the start with the required accuracy.

These drawbacks are eliminated by the connection of the invention, the principle of which is that each thyristor servo drive coupled to its respective preselection is a frequency-analogue converter, via an adjustable divider, and via a start-up actuator, with each adjustable divider connected by its frequency input to a preselection operating speed and preselection of the loading speed through a digital-frequency converter, through a line start member and through a data selector, and each run actuator is coupled to a write switch. Furthermore, according to the invention, it is expedient if the preselection switch is connected to the data selector and to the start-up element via the delay element.

Such a connection is very advantageous since it ensures with great precision the controlled start-up of the line and the transition from the feed-in speed to the working speed, while the change of the ratio remains unchanged with the different dynamic parameters of the individual drives. This makes it possible to rewind the coils at a very low feed rate while reducing the amount of waste material. In addition, the wiring makes it possible to vary the splitting ratio between any line drives and the line operation. 2. Connection according to item 1, characterized

An example of a connection according to the invention is shown in the attached drawing. For entering the entire line speed, presets 1, 2, data selector 3, line start member 6, digital frequency transducer 8 and delay member 5 with preset switch 4 are used. The wiring of these electronic units is converted so that the data selector 3 is coupled to its digital inputs with presets 1, 2, on which the numbers of the load and run line speed and their logic inputs with the 4 preset switch are set. the data selector 3 to override the preset speed 2 preset number or the work speed preset 1 to the line start member B.

The line start member 6 is connected to the selector 3 by its numerical input with the logic input with the delay member 5, which serves to delay the transcription of the number into the start member B, thereby eliminating transcription errors in the number changeover state.

The line start member 6 serves to progressively increase - decrease the zero number value to a value that is overwritten by the operating speed preselection 1 or the default speed 2 preselection. The rate of increase - decrease of the output number against the input is adjustable by the unit of the start line B. The digital-frequency converter 8 is connected to its line input 6 with its digital input and is connected to each frequency converter 111 ... 111 ... by its frequency output. The frequency signal that is routed through this jumper gives the link speed.

Each adjustable 111 ... lli .... It is still connected by its output to the corresponding thyristor servo drive 131 ... 13i ... 13n via frequency-analogue converters 121 ... 121 ... 12n and its digital input is connected to the corresponding preset 91 ... 9i ... n of the drive, through the associated drive member 191 ... 10i ... 10η.

This joint serves to additionally adjust the scaling ratio by changing the set numbers 91 to 9i ... 9n. The actuator members 101 ... 10 ... 10η are connected to an override switch 7 which is used to override the change of the number from the preselection 01 ... 9i ... 9n of the actuator member 101 ... 10.1 ... 10η of the actuator. Numbers corresponding to the selected line speeds are set in the 2 load speed preselection and the work speed 1 preset. The numbers 91 ... 9i ... 9n of the actuator are used to set the numbers corresponding to the split ratio between the individual servo drives. The switch 7 overrides the set numbers from the drive speed presets 91 ... 9i ...... 9n to the drive members 101 ... 10 ... 10η of the drive.

The preset switch 4 overwrites the set number from the load speed preset 2 to the data slider 3, and the timing of the delay member 5 is also pulled. After the set time has elapsed, the number from the data slider 3 is overwritten by the line start member B . At this point, the line begins to accelerate to the loading speed so that the line number G is gradually increased by the set speed and is routed to the digital frequency converter 8, where the value of the number is converted to the corresponding frequency.

The frequency signal from the digital-to-frequency converter 8 is routed to each adjustable splitter 111 ... 111 ... lln, which is generated by the overwriting numbers in the downlink members 101 ... 10 ... drive. Frequency signals modified in this way are routed to frequency-analogue converters 121 ...

Claims (2)

252010 ... 12i ... 12n, where they are converted to corresponding analog signals which are proportional to the set speeds and are fed to the thyristor servo drives 131 ... 13i ...... 13n. The line starts at a set feed rate and at this speed the initial winding is transferred to all spools. By switching the preset switch 4, the preset number from the working speed preset 1 is overwritten to the data selector 3, and the delay timing of the delay member 5 is given. After the set time has elapsed, the dialed number in the data selector 3 overwrites the extension 6 of the line and starts the line not start at work speed. Another function is analogous to that described naturally for the loading rate. Throughout the start-up and steady state, the frequency signal at the input of the adjustable divisions 111 ... 111 ... lln is genoirized by the transcribed numbers of the respective start members 101 ... 10i ... 10ηpoh and thus is secured cutting ratio between individual thyristor actuators 131 ... 13i ... 13n. In case it is necessary to change the divider between 1 ' any thyristor actuators 131 ... 13i ... 13n from the technological point of view, the numbers in the pre-selection, e.g. and by switching the switch 7, the changed numbers are rewritten to the respective start members 10i ... 10η of the drives. At the output of the actuators 10i ... 10η, with the set speed, the change of numbers is changed to a new value, whereby the frequency of the frequency signal is adjusted from the output of the corresponding setpoints 11i. lln. In this way, the cutting ratio between thyristor circuits 131 ... 13i-1 and 13i ... 13n is smoothly adjusted. This connection can be used for line control, where high control accuracy is required even in transient states, and when adjusting the different speed-to-drive ratios in the line. OBJECT 1. The connection for numerical-frequency control of chemical fiber splitting lines is characterized by the fact that each thyristor actuator (131 ... 13i ... 13nj is connected by a corresponding preselection (91 ... ... 9i ... 9n) via frequency-analog transceiver (121 ... 12i ... 12n) via adjustable bar (111 ... lli ... lln) and via run-time member (101 ... lOi .. 10nj drive, wherein each adjustable interval (111 ... ... 111 ... lln) is connected by its frequency input to a work rate (1) preselection (1) and a digital speed frequency preselection (2). a transducer (8), through the line start member (6) and through the data selector (3), and each drive member (101 ... 10i ... 10η) is coupled to the transcript switch (7). 2. The connection according to claim 1, characterized in that the preselection switch (4) is connected to the data selector (3) and the line member (6) via the delay member (5). 1 sheet of drawings