CN102755994A - Torsional vibration suppression device for rolling mill - Google Patents
Torsional vibration suppression device for rolling mill Download PDFInfo
- Publication number
- CN102755994A CN102755994A CN2011101161844A CN201110116184A CN102755994A CN 102755994 A CN102755994 A CN 102755994A CN 2011101161844 A CN2011101161844 A CN 2011101161844A CN 201110116184 A CN201110116184 A CN 201110116184A CN 102755994 A CN102755994 A CN 102755994A
- Authority
- CN
- China
- Prior art keywords
- torsional vibration
- rolling mill
- motor
- torsional oscillation
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The invention provides a torsional vibration suppression device for rolling mill, belonging to the field of automatic control of a rolling mill. The torsional vibration suppression device comprises a motor current transformer, a motor rotation speed transformer, a torsional vibration suppressor and a roller-motor speed difference transformer. When a main transmission system of a continuous rolling mill has torsional vibration, the torsional vibration suppressor can simulate a compensating signal with the same frequency and amplitude as the torsional vibration and can send the compensating signal to an input end of a current adjustor in a main transmission control so that current of a motor generates vibration to suppress the torsional vibration of the main transmission system, the aim of suppressing the horizontal vibration of the rolling mill is reached, and chatter marks generated by a roller and band steel are suppressed further.
Description
Technical field
The present invention relates to a kind of torsional vibration of rolling mill restraining device, belong to the milling train automation control area.
Background technology
Domestic and international many tandem mills are frequent in the operation of rolling strong phenomenon of torsional vibration to occur, shows as operation of rolling roller and be the noise of coupled vibrations such as horizontal vibration, transmission system twisting vibration and working stand vertical vibration and accompanied by intense.Milling train is typical mechanical electronic hydraulic complication system, and the coupling between its dynamics state and each sub-systems is closely related.Its vibration mechanism is complicated, and is various informative, traces it to its cause not only because the frame for movement of tandem mill is very complicated with the control system, but also owing to technological parameter in the operation of rolling is various the various parameters weave in that influences each other.This has just caused the vibration mode of different milling trains, vibration cause difference very big, even same rolling mill also exists multiple vibration mode in the operation of rolling.After vibration takes place; On band, working roll or backing roll surface, form the thick difference of light and shade striped or band and change, serious threat the safety in production of milling train, reduced product surface quality; Even cause the milling train parts to lose efficacy, thereby cause equipment fault or major accident etc.
Through theoretical research, the strong horizontal vibration of tandem mill is generally caused by the transmission system torsional oscillation.The method that suppresses the tandem mill vibration at present mainly concentrates on technology and two aspects of mechanical system, and adopting the adjustment emulsion ratio, changing roller is methods such as gap and roll change, but poor effect.
The present invention produces the electric current of regulating motor with mechanical torsional size oscillating current identical, in the opposite direction in driving control system, suppress the torsional oscillation of transmission system, thereby reaches the purpose that suppresses rolling mill vibration.
Summary of the invention
In order to solve current tandem mill judder problem, the present invention proposes a kind of tandem mill equipment for inhibiting of vibration, concrete technical scheme is:
A kind of tandem mill torsional oscillation restraining device is made up of current sensor, torsional oscillation TVS and output loop.
Current sensor is in order to measure the main driving motor electric current; The torsional oscillation TVS is to come the transient speed between simulated machine and the roll poor by the circuit that mechanical part and electrical system model constitute; Realization simulates the motor vibration offset current corresponding with the transient speed difference between the roll; The output loop electric current that input that offset current delivers to the electric machine control system current regulator brings in the control motor that will vibrate is offset torsional oscillation, thereby suppresses the tandem mill horizontal vibration.
The foregoing circuit electronic component is installed and is welded on the printed circuit board (PCB), is encapsulated in the rectangular container, and lead-in wire is drawn at the afterbody of shell.
Compared with prior art; Characteristics of the present invention are: in tandem mill main transmission control system, can access the transient speed difference between motor and the working roll and simulate torsional oscillation through the torsional oscillation TVS; Produce the torsional oscillation that vibration offset current identical with frequency with the torsional oscillation amplitude but that phase place is opposite suppresses main transmission, thereby realize inhibition the milling train horizontal vibration.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
Fig. 1 is a structure chart of the present invention;
Fig. 2 is a principle assumption diagram of the present invention;
Fig. 3 is a circuit diagram of the present invention.
Fig. 4 is an embodiment of the present invention.
The specific embodiment
As shown in Figure 1, vibration damper of the present invention is made up of input wires terminal 1 and 2, lead-out terminal 3 and 4, shell 5, loam cake 6, printed circuit board (PCB) 7 and screw 8.Binding post 1,2 is inputs of printed circuit board (PCB) 7, binding post 3,4th, and the output of printed circuit board (PCB), printed circuit board (PCB) 7 is fixed on the shell 5 by screw 8.Last loam cake 6 usefulness interference fit are buckled on the shell 5.
As shown in Figure 2, the present invention is made up of motor speed converter, motor current conversion, torsional oscillation TVS and roll and electronic machine speed difference converter.When the tandem mill main transmission produces torsional oscillation; The torsional oscillation TVS receives the signal of motor speed converter and motor current converter; The torsional oscillation TVS produces roll and motor speed difference signal, sees amplitude with actual torsional oscillation but oscillator signal that signal opposite identical with frequency off through roll and electronic machine speed difference converter and delivers to and offset original torsional oscillation in the motor speed control system.
As shown in Figure 3; The torsional oscillation TVS is made up of 15 integrated circuits and several resistance capacitances; The friction of rotary inertia, coefficient of elasticity and the transmission system of their simulation mechanical parts etc.; Different transmission systems has different parameters, and input signal is motor current and motor speed scaling signal K
1I, K
2N, output signal are roll rotational speed and motor speed speed difference scaling signal K
3Δ n, K
1, K
2And K
3Confirm according to the ratio between rotating speed and energy.The torsional oscillation TVS can simulate the speed discrepancy between motor and the roll according to input signal, i.e. the torsional oscillation of main transmission.
As shown in Figure 4, implementation method of the present invention is: the torsional oscillation TVS is input as the electric current of motor and the rotating speed of motor, and poor through its instantaneous velocity that is output as motor and roll of torsional oscillation TVS, speed difference has reflected the torsional oscillation of transmission system.When transmission system produces torsional oscillation; Torsional oscillation TVS output will produce with the torsional oscillation amplitude with frequency is consistent but the oscillator signal that phase place is opposite is delivered to the torsional oscillation that the input of current regulator makes the offset current generation of vibrating go to offset transmission system; Thereby realize rolling mill transmission system stable operation, suppress the roll horizontal vibration.Adopt the mode of this torsional oscillation compensation; The rapidity of its effect mainly is can produce with actual transmission system torsional oscillation amplitude and phase place is identical and signal that phase place is reverse by the torsional oscillation TVS; Participate in electric current directly as FEEDFORWARD CONTROL and regulate, thereby suppress torsional oscillation, realize the stable operation of milling train.
Claims (4)
1. a torsional vibration of rolling mill restraining device is characterized in that being made up of motor current converter, motor speed converter, torsional oscillation TVS and roll and electronic machine speed difference converter;
2. torsional vibration of rolling mill restraining device according to claim 1 is characterized in that the motor current converter delivers to motor current the input of torsional oscillation TVS according to a certain percentage;
3. torsional vibration of rolling mill restraining device according to claim 1 is characterized in that the motor speed converter delivers to motor speed the input of torsional oscillation TVS according to a certain percentage;
4. torsional vibration of rolling mill restraining device according to claim 1 is characterized in that the torsional oscillation TVS is made up of integrated circuit and resistance capacitance, can simulate roll and motor speed difference signal, is used to suppress the compensating signal of transmission system torsional oscillation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101161844A CN102755994A (en) | 2011-04-26 | 2011-04-26 | Torsional vibration suppression device for rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101161844A CN102755994A (en) | 2011-04-26 | 2011-04-26 | Torsional vibration suppression device for rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102755994A true CN102755994A (en) | 2012-10-31 |
Family
ID=47050780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101161844A Pending CN102755994A (en) | 2011-04-26 | 2011-04-26 | Torsional vibration suppression device for rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102755994A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121037A (en) * | 2013-03-07 | 2013-05-29 | 北京科技大学 | Device for suppressing vibration of rolling mill |
| CN103752620A (en) * | 2013-12-31 | 2014-04-30 | 北华大学 | Prediction method of torsional vibration of rolling mill |
| CN111872128A (en) * | 2020-05-20 | 2020-11-03 | 李涛涛 | Device for preventing transmission slip of roller system and inhibiting torsional vibration of four-roller mill |
| CN114007774A (en) * | 2019-08-08 | 2022-02-01 | 普锐特冶金技术日本有限公司 | Method and device for evaluating state of rolling device, and rolling facility |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60177906A (en) * | 1984-02-24 | 1985-09-11 | Nippon Steel Corp | Roll driving equipment |
| CN1100974A (en) * | 1993-09-29 | 1995-04-05 | 鞍山钢铁公司 | Apparatus for optimizing the property of AC transmission speed-regulating system, which can reduce the torsional vibration and impact |
| JPH08206718A (en) * | 1995-02-02 | 1996-08-13 | Toshiba Corp | Speed controller of motor for rolling mill |
| WO1999021665A1 (en) * | 1997-10-27 | 1999-05-06 | Alexandr Petrovich Yarlykov | Method for improving the operation, preparing the exploitation and maintaining the operation conditions of rolling cylinders |
| DE19907757A1 (en) * | 1998-02-25 | 1999-08-26 | Fuji Electric Co Ltd | Speed controller for motor with resilient shaft connection to load |
| CN1803326A (en) * | 2006-01-25 | 2006-07-19 | 冶金自动化研究设计院 | Control system for suppressing impact speed drop and torsional oscillation of rolling mill transmission system |
-
2011
- 2011-04-26 CN CN2011101161844A patent/CN102755994A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60177906A (en) * | 1984-02-24 | 1985-09-11 | Nippon Steel Corp | Roll driving equipment |
| CN1100974A (en) * | 1993-09-29 | 1995-04-05 | 鞍山钢铁公司 | Apparatus for optimizing the property of AC transmission speed-regulating system, which can reduce the torsional vibration and impact |
| JPH08206718A (en) * | 1995-02-02 | 1996-08-13 | Toshiba Corp | Speed controller of motor for rolling mill |
| WO1999021665A1 (en) * | 1997-10-27 | 1999-05-06 | Alexandr Petrovich Yarlykov | Method for improving the operation, preparing the exploitation and maintaining the operation conditions of rolling cylinders |
| DE19907757A1 (en) * | 1998-02-25 | 1999-08-26 | Fuji Electric Co Ltd | Speed controller for motor with resilient shaft connection to load |
| CN1803326A (en) * | 2006-01-25 | 2006-07-19 | 冶金自动化研究设计院 | Control system for suppressing impact speed drop and torsional oscillation of rolling mill transmission system |
Non-Patent Citations (1)
| Title |
|---|
| 闫晓强等: ""轧机扭振控制"", 《北京科技大学学报》, vol. 19, no. 1, 28 February 1997 (1997-02-28) * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121037A (en) * | 2013-03-07 | 2013-05-29 | 北京科技大学 | Device for suppressing vibration of rolling mill |
| CN103121037B (en) * | 2013-03-07 | 2015-02-25 | 北京科技大学 | Device for suppressing vibration of rolling mill |
| CN103752620A (en) * | 2013-12-31 | 2014-04-30 | 北华大学 | Prediction method of torsional vibration of rolling mill |
| CN103752620B (en) * | 2013-12-31 | 2018-10-30 | 北华大学 | A kind of torsional vibration of rolling mill prediction technique |
| CN114007774A (en) * | 2019-08-08 | 2022-02-01 | 普锐特冶金技术日本有限公司 | Method and device for evaluating state of rolling device, and rolling facility |
| CN114007774B (en) * | 2019-08-08 | 2023-09-15 | 普锐特冶金技术日本有限公司 | State evaluation method and state evaluation device for rolling device and rolling equipment |
| CN111872128A (en) * | 2020-05-20 | 2020-11-03 | 李涛涛 | Device for preventing transmission slip of roller system and inhibiting torsional vibration of four-roller mill |
| CN111872128B (en) * | 2020-05-20 | 2022-06-28 | 上海大松瓦楞辊有限公司 | Device for preventing roller system transmission slip and restraining torsional vibration of four-roller mill |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102755994A (en) | Torsional vibration suppression device for rolling mill | |
| CN102782513B (en) | For the method and apparatus of torsional oscillation vibration damping | |
| CN102537196B (en) | Active vibration damping system as well as vibration damping unit and absolute displacement measuring device thereof | |
| CN103121037B (en) | Device for suppressing vibration of rolling mill | |
| CN106641087B (en) | A kind of electromagnetic type active vibration absorber | |
| US10907613B2 (en) | Damping mechanical oscillations of a wind turbine | |
| CN102969971A (en) | Motor control apparatus | |
| CN101294543A (en) | Method for the active damping of the drive train in a wind energy plant | |
| CN106989130A (en) | A kind of half active mono-pendulum type eddy current tuned mass damper | |
| CN104736460B (en) | Vibratory parts-feeding apparatus | |
| CN104362916B (en) | Method for designing stabilizer in transmission shaft system of double-feed wind turbine generator and stabilizer | |
| CN104467360A (en) | Permanent magnetic speed regulator with brake function | |
| CN103256188B (en) | A kind of Torsional Vibration Control method of driving chain of wind generating set and device | |
| CN104723819A (en) | Active control energy feedback vibration reduction device capable of generating electric energy and energy capture method thereof | |
| CN105021350A (en) | Turbo-generator rotor mass unbalance evaluation method | |
| CN103762910A (en) | Power balance controlling device and method of multi-motor drive system | |
| CN203851068U (en) | Multi-motor drive system power balance control device | |
| CN102755995A (en) | Vibration suppression device for rolling mill roller system | |
| CN203494895U (en) | Control device capable of ensuring load balancing of cold-rolled tinned wire tension roller | |
| CN202685972U (en) | Unloading car brake system with eddy current retarder | |
| CN204234339U (en) | A kind of linear electric motors drive self-balancing type vibrating transportation screening machine | |
| CN204495557U (en) | Rolling mill transmission system simulated experiment platform | |
| JP2018107877A (en) | Reactive power compensation apparatus and power system voltage control method using the same | |
| EP2418548A1 (en) | Dual pinion drive system | |
| CN202130113U (en) | Silk screen interval adjusting system used for screen printing machine and screen printing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121031 |