CN105618480B - Roll the control system of aluminium foil thickness difference precision - Google Patents
Roll the control system of aluminium foil thickness difference precision Download PDFInfo
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- CN105618480B CN105618480B CN201410590897.8A CN201410590897A CN105618480B CN 105618480 B CN105618480 B CN 105618480B CN 201410590897 A CN201410590897 A CN 201410590897A CN 105618480 B CN105618480 B CN 105618480B
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Abstract
The present invention relates to a kind of control systems for rolling aluminium foil thickness difference precision, including pressing upper cylinder half, inner loop control circuit, servo valve and outer-loop control circuit, the pressure upper cylinder half is electrically connected with outer-loop control circuit and servo valve respectively by inner loop control circuit, the pressure upper cylinder half is equipped with the position sensor for being capable of measuring pressure upper cylinder half displacement and the pressure sensor for being capable of measuring pressure upper cylinder half pressure, the interior loop circuit includes rolling-mill housing control module, the outer-loop control circuit includes thickness control module, measurer for thickness, speed control unit, uncoiling tension control apparatus and velocity measuring device.The control system of the rolling aluminium foil thickness difference precision uses double-closed-loop control, it realizes while the control to pressure and displacement, avoid at single position or pressure missing can not intelligent recognition currently press the physical location and pressure of upper cylinder half, so that control well can be also realized to template when controlling precision and reaching high request.
Description
Technical field
The present invention relates to a kind of control systems for rolling aluminium foil thickness difference precision.
Background technique
Major part cold-rolling mill system is right all in the control stage for carrying out DDC process with computer settings and microcomputer at present
There is biggish contradictions between thickness control mode and tension adjustment, and during cold rolling, the resistance of deformation of aluminium foil is very big,
And increase with the increase of rolling pass, only measuring rolling force deviation cannot be very accurate, for strip thickness essence
It spends for demanding cold-rolling mill, control precision is not obviously much of that, and controls precision and do not reach requirement and often just will increase
Rejection rate increases production cost.
Summary of the invention
The technical problem to be solved by the present invention is the deficiency of high rejection rate mentions in order to overcome prior art control precision low
For a kind of control system for the rolling aluminium foil thickness difference precision that control precision is high, rejection rate is low.
The technical solution adopted by the present invention to solve the technical problems is: a kind of control system rolling aluminium foil thickness difference precision
System, including pressure upper cylinder half, inner loop control circuit, servo valve and outer-loop control circuit, the pressure upper cylinder half pass through inner loop control circuit point
It is not electrically connected with outer-loop control circuit and servo valve, the pressure upper cylinder half is equipped with the position sensor for being capable of measuring pressure upper cylinder half displacement
With the pressure sensor for being capable of measuring pressure upper cylinder half pressure, the inner loop control circuit includes rolling-mill housing control module, in the pressure
Cylinder and servo valve are sequentially connected, and the servo valve, pressure upper cylinder half, position sensor and pressure sensor control mould with rolling-mill housing
Block electrical connection, the outer-loop control circuit includes thickness control module, measurer for thickness, speed control unit, uncoiling tension
Control device and velocity measuring device, the thickness measure module and measurer for thickness are electrically connected with rolling-mill housing control module
Connect, the uncoiling tension control apparatus, speed control unit, measurer for thickness and velocity measuring device with thickness control mould
Block electrical connection.
In order to preferably monitor the change in location of pressure upper cylinder half, the position sensor has four, and two of them are arranged in institute
The fore side of pressure upper cylinder half is stated, the transmission side of the pressure upper cylinder half is arranged in other two, and the position sensor is magnetic scale.
In order to improve the control precision of whole system, the rolling-mill housing control module includes conversion module, I/O expanded mode
Block, PLC and servo amplifier, the conversion module, I/O expansion module and servo amplifier are sequentially connected electrically, the PLC and I/
The electrical connection of O expansion module, the pressure sensor and position sensor be electrically connected with conversion module, the servo amplifier and
Servo valve electrical connection.
In order to preferably transmit and feedback signal, the PLC is by passing through 0- between I/O expansion module and servo amplifier
The voltage signal of 10V is electrically connected, and is electrically connected between the servo amplifier and servo valve by the current pulse signal of 0-20MA.
The invention has the advantages that the control system of the rolling aluminium foil thickness difference precision uses double-closed-loop control, realize
Control to pressure and displacement simultaneously, avoid at single position or pressure missing can not intelligent recognition currently press
The physical location and pressure of cylinder, to can also realize control well to template when controlling precision and reaching high request.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the circuit diagram of the control system of present invention rolling aluminium foil thickness difference precision；
Fig. 2 is that the position sensor of control system of present invention rolling aluminium foil thickness difference precision and the circuit of conversion module connect
Connect schematic diagram；
Fig. 3 is the conversion module of the control system of present invention rolling aluminium foil thickness difference precision and the circuit of I/O expansion module
Connection schematic diagram；
Fig. 4 is the I/O expansion module of the control system of present invention rolling aluminium foil thickness difference precision and the electricity of servo amplifier
Road connection schematic diagram；
Fig. 5 is the circuit of the configuration power module and PLC machine frame of the control system of present invention rolling aluminium foil thickness difference precision
Connection schematic diagram；
Fig. 6 is that the I/O expansion module of control system of present invention rolling aluminium foil thickness difference precision and the circuit connection of PLC are shown
It is intended to；
In figure: 1. pressure upper cylinder halfs, 2. inner loop control circuits, 3. outer-loop control circuits, 4. servo valves, the conversion of 5. position sensors
Device, 21. rolling-mill housing control modules, 31. thickness control modules, 32. speed measurement modules, 33. uncoiling tension control apparatus,
34. speed control unit, 35. measurer for thickness, 21-1 conversion module, 21-2.I/O expansion module, the amplification of 21-3. servo
Device, 21-4.PLC.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As Figure 1-Figure 4, a kind of control system rolling aluminium foil thickness difference precision, including pressure upper cylinder half 1, inner loop control electricity
Road 2, servo valve 4 and outer-loop control circuit 3, the pressure upper cylinder half 1 by inner loop control circuit 2 respectively with outer-loop control circuit 3 and
Servo valve 4 is electrically connected, and the pressure upper cylinder half 1 is equipped with the position sensor 5 for being capable of measuring pressure 1 displacement of upper cylinder half and is capable of measuring pressure upper cylinder half
The pressure sensor of pressure, the inner loop control circuit 2 include rolling-mill housing control module 21, the pressure upper cylinder half 1 and servo valve
4 transmission connections, the servo valve 4, pressure upper cylinder half 1, position sensor 5 and pressure sensor are electric with rolling-mill housing control module 21
Connection, the outer-loop control circuit 3 include thickness control module 31, measurer for thickness 35, speed control unit 34, uncoiling
Force control device 33 and velocity measuring device 32, the thickness control module 31 and measurer for thickness 35 with rolling-mill housing control
Molding block 21 is electrically connected, the uncoiling tension control apparatus 33, speed control unit 34, measurer for thickness 35 and tachometric survey
Device 32 is electrically connected with thickness control module 31.
In order to preferably monitor the change in location of pressure upper cylinder half 1, the position sensor 5 has four, and two of them setting exists
The fore side of the pressure upper cylinder half 1, the transmission side of the pressure upper cylinder half 1 is arranged in other two, and the position sensor 5 is magnetic scale.
In order to improve the control precision of whole system, the rolling-mill housing control module 21 includes conversion module 21-1, I/O
Expansion module 21-2, PLC21-4 and servo amplifier 21-3, conversion module 21-1, I/O expansion module 21-2 and servo are put
Big device 21-3 is sequentially connected electrically, and the PLC21-4 is electrically connected with I/O expansion module, the pressure sensor and position sensor 5
It is electrically connected with conversion module 21-1, the servo amplifier 21-3 is electrically connected with servo valve 4.
In order to preferably transmit and feedback signal, the PLC21-4 passes through I/O expansion module 21-2 and servo amplifier
It is electrically connected between 21-3 by the voltage signal of 0-10V, passes through 0-20MA's between the servo amplifier 21-3 and servo valve 4
Current pulse signal electrical connection.
Exterior arrangement power supply powers to PLC21-4 by PLC machine frame.
Servo valve 4 is sequentially connected by hydraulic oil and pressure upper cylinder half 1, and pressure upper cylinder half 1 is controlled by controlling the flow of hydraulic oil
Rise or fall, thus achieve the purpose that control template.
The CPU of the PLC21-4 uses 64 bit processors, and the execution bit manipulation instruction response time is 0.06 microsecond, executes
The response time of floating-point operation instruction is 0.18 microsecond, and the application module in PLC21-4 equally uses 64, at 128MHZ floating-point
Device is managed, the scan period is 100 microseconds.
The system is controlled using inner loop control circuit 2 and outer-loop control circuit 3, i.e. double-closed-loop control method, so that
The CPU of PLC21-4 can carry out high frequency to the displacement signal that feed back of outside and pressure signal, efficiently identify, and with behaviour
The required vertical progress intelligent comparison operation for making personnel setting provides feedback to servo valve 4, to effectively and quickly change pressure
The position of upper cylinder half 1.
The working principle of the system are as follows: in booting, for operator according to process requirements, template required for setting, material are thick
And actual pressure value needed for corresponding the first two parameter, position sensor 5 detect the physical location of pressure upper cylinder half 1, position automatically
It sets after displacement signal is converted into analog pulse signal by conversion module 21-1 by the position signal measured by sensor 5 and is transferred to
I/O expansion module 21-2, I/O expansion module 21-2 transfers data to PLC21-4 again, and the CPU of PLC21-4 is calculated currently automatically
Actual pressure value that difference, the pressure sensor feeds back of position and the thick required physical location of setting material are come with set before
The difference of pressure value provides the voltage feedback signal of corresponding 0-10V to servo amplifier 21-3, which passes through servo
After amplifier 21-3 is transformed into the current pulse signal of 0-20MA, which is transferred to servo valve 4, and servo valve 4 is according to this
Signal is driven pressure upper cylinder half 1 by hydraulic mode and rises or decline；It presses upper cylinder half 1 to rise then pressure to increase, expects that thickness reduces, in pressure
Cylinder 1 declines, then pressure reduces, and expects thick increase, synchronously, moreover it is possible to be adjusted to template.
Compared with prior art, the control system of the rolling aluminium foil thickness difference precision uses double-closed-loop control, realizes same
When control to pressure and displacement, avoid at single position or pressure missing can not intelligent recognition currently press upper cylinder half 1
Physical location and pressure, thus control precision reach high request when also can to template realize well control.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (1)
1. a kind of control system for rolling aluminium foil thickness difference precision, which is characterized in that including pressing upper cylinder half (1), inner loop control circuit
(2), servo valve (4) and outer-loop control circuit (3), the pressure upper cylinder half (1) by inner loop control circuit (2) respectively with outer loop control
Circuit (3) and servo valve (4) electrical connection, pressure upper cylinder half (1) are equipped with the position sensor for being capable of measuring pressure upper cylinder half (1) displacement
(5) and be capable of measuring pressure upper cylinder half (1) pressure pressure sensor,
The interior loop circuit (2) includes rolling-mill housing control module (21), and the pressure upper cylinder half (1) and servo valve (4) are sequentially connected,
The servo valve (4), pressure upper cylinder half (1), position sensor (5) and pressure sensor are direct with rolling-mill housing control module (21)
Electrical connection,
The outer-loop control circuit (3) includes thickness control module (31), measurer for thickness (35), speed control unit
(34), uncoiling tension control apparatus (33) and velocity measuring device (32), the thickness control module (31) and thickness measure dress
It sets (35) to be electrically connected with rolling-mill housing control module (21), the uncoiling tension control apparatus (33), speed control unit
(34), measurer for thickness (35) and velocity measuring device (32) are electrically connected with thickness control module (31),
The rolling-mill housing control module (21) includes that conversion module (21-1), I/O expansion module (21-2), PLC and servo are put
Big device (21-3), the conversion module (21-1), I/O expansion module (21-2) and servo amplifier (21-3) are successively electrically connected
It connects, the PLC is electrically connected with I/O expansion module, and the pressure sensor and position sensor (5) are and conversion module
(21-1) electrical connection, the servo amplifier (21-3) are electrically connected with servo valve (4), and servo valve (4) passes through on hydraulic oil and pressure
Cylinder (1) transmission connection controls rising or falling for pressure upper cylinder half (1) by controlling the flow of hydraulic oil, to reach control panel
The purpose of type；
The position sensor (5) has four, and in the fore side of pressure upper cylinder half (1), other two is arranged for two of them setting
In the transmission side of pressure upper cylinder half (1), the position sensor (5) is magnetic scale；
The PLC between I/O expansion module (21-2) and servo amplifier (21-3) by the voltage of 0-10V by being believed
Number electrical connection, be electrically connected between the servo amplifier (21-3) and servo valve (4) by the current pulse signal of 0-20MA；
The working principle of the system are as follows: in booting, operator according to process requirements, template required for setting, material it is thick and
Actual pressure value needed for corresponding the first two parameter, position sensor (5) detect the physical location of pressure upper cylinder half (1), position automatically
It sets after displacement signal is converted into analog pulse signal by conversion module (21-1) by the position signal measured by sensor (5) and passes
It is handed to I/O expansion module (21-2), I/O expansion module (21-2) transfers data to PLC again, and the CPU of PLC is calculated currently automatically
Actual pressure value that difference, the pressure sensor feeds back of position and the thick required physical location of setting material are come with set before
The difference of pressure value provides the voltage feedback signal of corresponding 0-10V to servo amplifier (21-3), and the voltage signal is by watching
It takes after amplifier (21-3) is transformed into the current pulse signal of 0-20MA, which is transferred to servo valve (4), servo valve
(4) pressure upper cylinder half (1) is driven by hydraulic mode according to the signal to rise or decline；It presses upper cylinder half (1) to rise then pressure to increase,
Material is thick to be reduced, and pressure upper cylinder half (1) decline, then pressure reduces, and expects thick increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590897.8A CN105618480B (en) | 2014-10-29 | 2014-10-29 | Roll the control system of aluminium foil thickness difference precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590897.8A CN105618480B (en) | 2014-10-29 | 2014-10-29 | Roll the control system of aluminium foil thickness difference precision |
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| Publication Number | Publication Date |
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| CN105618480A CN105618480A (en) | 2016-06-01 |
| CN105618480B true CN105618480B (en) | 2019-01-01 |
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| CN201410590897.8A Active CN105618480B (en) | 2014-10-29 | 2014-10-29 | Roll the control system of aluminium foil thickness difference precision |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107185962B (en) * | 2017-06-12 | 2019-09-10 | 陈治政 | A kind of calendering device and its calendering process of non-ferrous metal |
| CN108772424A (en) * | 2018-07-17 | 2018-11-09 | 桂林电子科技大学 | The offline dynamic detection automatic control system of finished product aluminium foil plate shape and its application method |
| CN110340154B (en) * | 2019-07-22 | 2020-10-30 | 镇江龙源铝业有限公司 | Constant tension control method for small multi-stand cold continuous rolling unit |
| CN112903009A (en) * | 2021-01-15 | 2021-06-04 | 广东嘉元科技股份有限公司 | Online monitoring system of crude foil machine |
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| JP3974084B2 (en) * | 2003-06-26 | 2007-09-12 | 株式会社神戸製鋼所 | Thickness control method and thickness control apparatus for rolling mill |
| CN100467153C (en) * | 2006-11-17 | 2009-03-11 | 燕山大学 | Method for controlling thickness of cold rolled steel strip capable of conducting dynamic compensation of thermal expansion of rollers |
| JP5170240B2 (en) * | 2008-05-07 | 2013-03-27 | 東芝三菱電機産業システム株式会社 | Thickness control device for rolling mill |
| CN201464921U (en) * | 2009-04-28 | 2010-05-12 | 河南鸽瑞复合材料有限公司 | Hydraulic automatic gauge control system of four-roll reversible cold-belt rolling mill |
| CN103775437B (en) * | 2014-02-28 | 2016-03-02 | 南京理工大学 | Cylinder bench load simulating device and controlling method thereof |
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