CN107143549A - A kind of servo-control system based on extruding production technology - Google Patents
A kind of servo-control system based on extruding production technology Download PDFInfo
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- CN107143549A CN107143549A CN201710378534.1A CN201710378534A CN107143549A CN 107143549 A CN107143549 A CN 107143549A CN 201710378534 A CN201710378534 A CN 201710378534A CN 107143549 A CN107143549 A CN 107143549A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of servo-control system based on extruding production technology, including hydraulic pump and at least one set of server control subsystem, each group of server control subsystem includes signal output part, PID regulator, servo valve, hydraulic cylinder, workbench and detection feedback element；The output end of the PID regulator and the output end of hydraulic pump connect the input of servo valve respectively, the input of the output end connection liquid cylinder pressure of the servo valve, the output end difference connecting working table of the hydraulic cylinder and the input for detecting feedback element, the output end and signal output part of the detection feedback element connect the input of PID regulator respectively, constitute closed-loop control.Using the present invention, using control valves such as servo valves, closed-loop control system is formed, makes the reality output of system equal with desired value, so as to lower energy consumption, improve efficiency, improve precision.
Description
Technical field
The present invention relates to extrusion technique field, more particularly to a kind of servo-control system based on extruding production technology.
Background technology
At present, the extruder drive system of enterprise mainly uses the oil return pressure release type hydraulic pressure using asynchronous machine as driving equipment
Control system, the system, to transmit based on power, is open-loop control system, it is impossible to entered according to actual condition supplemented by transmission information
Row adjustment in real time, causes substantial amounts of waste of energy（The energy consumption of extrusion process accounts for the 38% of product comprehensive energy consumption, extrusion process
Power consumption accounts for the 36% of product total electricity consumption）, and production efficiency is relatively low.Therefore, from the angle of production efficiency, stability and efficiency
From the point of view of, original system has following shortcoming：
（1）It cannot be guaranteed that fixed than transmission；
（2）Transmission efficiency is relatively low, there is energy loss；
（3）Job stability is easily affected by temperature；
（4）System first wife it is standby be asynchronous machine, its can not according to actual condition adjust rotating speed.Asynchronous machine is to convert electrical energy into
For kinetic energy, in transfer process, due to the friction of the generation and bearing in silicon iron plate of resistance, vortex of coil, output " has
With " kinetic energy simply enters 9 the one-tenth or so of electric energy（In full load）, other are converted to heat energy.But when load is less than 50%, efficiency
Decline to a great extent.The extruder course of work be generally divided into feeding, jacking, extrude, step back, cutting off, feeding, periodic cycle, according to
Dynamic change at the pressure and flow that the technological parameters such as extrusion coefficient, extrusion speed each stage needs, so being deposited in extrusion process
In larger waste of energy.
（5）System is acted using big orifice electro-hydraulic reversing valve control cylinder, and big orifice electro-hydraulic reversing valve machining accuracy is difficult
Ensure, cause functional reliability poor, leakage is big.
Therefore, existing extruder drive system can not meet the actual production of enterprise.
The content of the invention
The technical problems to be solved by the invention are that there is provided a kind of servo simple in construction based on extruding production technology
Control system, can form closed-loop control system, make the reality output of system equal with desired value, so as to lower energy consumption, improve effect
Rate, raising precision.
In order to solve the above-mentioned technical problem, the invention provides a kind of servo-control system based on extruding production technology,
Including hydraulic pump and at least one set of server control subsystem, each group of server control subsystem includes signal output part, PID and adjusted
Device, servo valve, hydraulic cylinder, workbench and detection feedback element；The output end of the PID regulator and the output end of hydraulic pump point
Not Lian Jie servo valve input, the input of the output end connection liquid cylinder pressure of the servo valve, the output end of the hydraulic cylinder
Difference connecting working table and the input for detecting feedback element, output end and the signal output part difference of the detection feedback element
The input of PID regulator is connected, closed-loop control is constituted；The signal output part exports setting signal to PID regulator, described
Detection feedback element exports the feedback signal gathered in real time to PID regulator, and the PID regulator is by setting signal with feeding back
Signal is compared to draw deviation signal and export deviation signal to servo valve, and the servo valve drives according to deviation signal
Hydraulic cylinder.
As the improvement of appeal scheme, the setting signal is pressure setting signal, and the feedback signal is pressure feedback
Signal.
As the improvement of appeal scheme, the setting signal is rate setting signal, and the feedback signal is velocity feedback
Signal.
As the improvement of appeal scheme, the setting signal is current settings signal, and the feedback signal is current feedback
Signal.
As appeal scheme improvement, extrusion process of production is divided into order mould cylinder process, manipulator send ingot process,
Progradation and extrusion process, one group of server control subsystem of each process correspondence.
As the improvement of appeal scheme, the server control subsystem corresponding to the extrusion process passes through independent Plunger oil
Pump is controlled, and the output end of the plunger-type fuel pump connects the input of servo valve.
Implement the present invention, have the advantages that：
Servo-control system of the present invention based on extruding production technology is integrated by studying Servo Drive Technology's, automatic control system
Control technology and noise control technique, servomotor fluid power system is transformed into by original system.It is improved to be based on extruding
The servo-control system of production technology is based on transmission information, supplemented by transmission power, using control valves such as servo valves, as closed loop
Control system.The set system draws deviation signal using feedback signal compared with setting signal, deviation signal control hydraulic pressure
The energy is input to the energy of system, makes system to the direction change for reducing deviation, until deviation is equal to zero or sufficiently small, so that
The reality output of system is equal with desired value.
Specifically, servo-control system of the present invention based on extruding production technology has the advantages that：
（1）Servo extruder power consumption reduces 20%-30%, and efficiency improves 3%-10%；
（2）The fast-response of servo extruder, high-accuracy control characteristic；
（3）Pressure is constant, reliable pressure maintaining performance, demand Flow supply；
（4）High response characteristic, 0.05s is only needed from 0-1500r/min；
（5）Noise, complete machine operation noise is less than 68 decibels.
Brief description of the drawings
Fig. 1 is the structural representation of servo-control system of the present invention based on extruding production technology.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with accompanying drawing
It is described in detail on step ground.Only this is stated, the side such as the up, down, left, right, before and after of the invention that occurs in the text or will appear from, inside and outside
Position word, only on the basis of the accompanying drawing of the present invention, it is not the specific restriction to the present invention.
Referring to Fig. 1, Fig. 1 shows the specific ground structure of servo-control system of the present invention based on extruding production technology, its
Including hydraulic pump and at least one set of server control subsystem, each group of server control subsystem includes signal output part, PID and adjusted
Device, servo valve, hydraulic cylinder, workbench and detection feedback element；
The output end of the PID regulator and the output end of hydraulic pump connect the input of servo valve respectively, the servo valve
The input of output end connection liquid cylinder pressure, the output end difference connecting working table of the hydraulic cylinder and the input for detecting feedback element
End, the output end and signal output part of the detection feedback element connect the input of PID regulator respectively, constitute closed loop control
System；
During work, the signal output part exports setting signal to PID regulator, and the detection feedback element will be gathered in real time
Feedback signal is exported to PID regulator, and setting signal and feedback signal are compared with the letter that must deviate by the PID regulator
Number and deviation signal is exported to servo valve, the servo valve according to deviation signal driving hydraulic cylinder move.
Therefore, the present invention is in view of extruder original Hydraulic Power Transmission System is the problem of exist, by study Servo Drive Technology's, from
Autocontrol system Comprehensive Control Technology and noise control technique, servomotor fluid power system is transformed into by original system.
The improved servo-control system based on extruding production technology is based on transmission information, supplemented by transmission power, to adopt
With control valves such as servo valves, as closed-loop control system.The set system is drawn partially using feedback signal compared with setting signal
Difference signal, deviation signal control hydraulic energy source is input to the energy of system, makes system to the direction change for reducing deviation, until
Deviation is equal to zero or sufficiently small, so that the reality output of system is equal with desired value.In other words, system is such work
, in input action（Spool displacement x）Incipient stage, output element（Hydraulic cylinder）Do not move also, input and outlet chamber have
" poor ", this " poor " moves output element, and motion makes " poor " reduction in turn, until " poor " is zero（Or close to zero）For
Only.
Correspondingly, extrusion process of production is divided into mould cylinder process, manipulator in order to send ingot process, progradation and squeeze
Press through journey, one group of server control subsystem of each process correspondence.
Specifically, the setting signal is pressure setting signal, and the feedback signal is pressure feedback signal, the pressure
Setting signal, pressure feedback signal are combined composition pressure closed loop control with server control subsystem.The setting signal is speed
Setting signal is spent, the feedback signal is feedback speed signal, the rate setting signal, feedback speed signal and SERVO CONTROL
Subsystem is combined composition velocity close-loop control.The setting signal is current settings signal, and the feedback signal is that electric current is anti-
Feedback signal, the current settings signal, current feedback signal are combined composition closed-loop current control with server control subsystem.
It should be noted that the present invention is using servo-driver, servomotor, combination oil pump and pressure, speed, electric current
Closed-loop control, takes mould cylinder, manipulator to send ingot, propulsion, extruding equal segments sequential control；Meanwhile, the present invention uses striping order
Independent hydraulically controlled drive control, multigroup servo-drive system matching oil pump is separately controlled by sequence of movement, and oil circuit closes relief valve, using watching
The pressure feedback of clothes itself adjusts oil pressure variable quantity, according to setting pressure regulation actual working pressure, reduces energy loss.
Server control subsystem corresponding to the extrusion process is controlled by independent plunger-type fuel pump, the plunger
The output end of oil pump connects the input of servo valve.
It should be noted that in the present invention, the server control subsystem corresponding to extrusion process is independent using plunger-type fuel pump
Control, power output changes and changed with load, stops when not working, and reduces the waste of energy.
From the foregoing, it will be observed that servo-control system of the present invention based on extruding production technology has the advantages that：
（1）Servo extruder power consumption reduces 20%-30%, and efficiency improves 3%-10%；
（2）The fast-response of servo extruder, high-accuracy control characteristic；
（3）Pressure is constant, reliable pressure maintaining performance, demand Flow supply；
（4）High response characteristic, 0.05s is only needed from 0-1500r/min；
（5）Noise, complete machine operation noise is less than 68 decibels.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. a kind of servo-control system based on extruding production technology, it is characterised in that including hydraulic pump and at least one set of servo
Control subsystem, each group of server control subsystem includes signal output part, PID regulator, servo valve, hydraulic cylinder, workbench
And detection feedback element；
The output end of the PID regulator and the output end of hydraulic pump connect the input of servo valve respectively, the servo valve
The input of output end connection liquid cylinder pressure, the output end difference connecting working table of the hydraulic cylinder and the input for detecting feedback element
End, the output end and signal output part of the detection feedback element connect the input of PID regulator respectively, constitute closed loop control
System；
The signal output part exports setting signal to PID regulator, and the detection feedback element is by the feedback letter gathered in real time
Number output is to PID regulator, and setting signal and feedback signal are compared to draw deviation signal and will by the PID regulator
Deviation signal is exported to servo valve, and the servo valve is moved according to deviation signal driving hydraulic cylinder.
2. the servo-control system as claimed in claim 1 based on extruding production technology, it is characterised in that the setting signal
For pressure setting signal, the feedback signal is pressure feedback signal.
3. the servo-control system as claimed in claim 1 based on extruding production technology, it is characterised in that the setting signal
For rate setting signal, the feedback signal is feedback speed signal.
4. the servo-control system as claimed in claim 1 based on extruding production technology, it is characterised in that the setting signal
For current settings signal, the feedback signal is current feedback signal.
5. the servo-control system as claimed in claim 1 based on extruding production technology, it is characterised in that produced extruding
Journey is divided into mould cylinder process, manipulator and send ingot process, progradation and extrusion process, one group of servo of each process correspondence in order
Control subsystem.
6. the servo-control system as claimed in claim 5 based on extruding production technology, it is characterised in that the extrusion process
Corresponding server control subsystem is controlled by independent plunger-type fuel pump, the output end connection servo of the plunger-type fuel pump
The input of valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378534.1A CN107143549A (en) | 2017-05-25 | 2017-05-25 | A kind of servo-control system based on extruding production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378534.1A CN107143549A (en) | 2017-05-25 | 2017-05-25 | A kind of servo-control system based on extruding production technology |
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| CN107143549A true CN107143549A (en) | 2017-09-08 |
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| CN201710378534.1A Pending CN107143549A (en) | 2017-05-25 | 2017-05-25 | A kind of servo-control system based on extruding production technology |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62220213A (en) * | 1986-03-24 | 1987-09-28 | Mitsubishi Metal Corp | Controller for diameter of extruded wire |
| JPH081233A (en) * | 1994-06-20 | 1996-01-09 | Kobe Steel Ltd | Speed controller for extruding press and method therefor |
| CN2805983Y (en) * | 2005-07-28 | 2006-08-16 | 西安重型机械研究所 | Hydraulic system equipment for |
| CN101609339A (en) * | 2009-07-13 | 2009-12-23 | 西南铝业（集团）有限责任公司 | The system and method for extruder speed control |
| CN101634862A (en) * | 2009-07-31 | 2010-01-27 | 中南大学 | Control method of opening of large flow throttle valve for water |
| CN101773947A (en) * | 2010-03-25 | 2010-07-14 | 中南大学 | Digital hydraulic extruder speed control system and method |
-
2017
- 2017-05-25 CN CN201710378534.1A patent/CN107143549A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62220213A (en) * | 1986-03-24 | 1987-09-28 | Mitsubishi Metal Corp | Controller for diameter of extruded wire |
| JPH081233A (en) * | 1994-06-20 | 1996-01-09 | Kobe Steel Ltd | Speed controller for extruding press and method therefor |
| CN2805983Y (en) * | 2005-07-28 | 2006-08-16 | 西安重型机械研究所 | Hydraulic system equipment for |
| CN101609339A (en) * | 2009-07-13 | 2009-12-23 | 西南铝业（集团）有限责任公司 | The system and method for extruder speed control |
| CN101634862A (en) * | 2009-07-31 | 2010-01-27 | 中南大学 | Control method of opening of large flow throttle valve for water |
| CN101773947A (en) * | 2010-03-25 | 2010-07-14 | 中南大学 | Digital hydraulic extruder speed control system and method |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Pan Weijin Inventor after: He Xiangqian Inventor after: Guan Jinfu Inventor before: Pan Weijin |
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| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170908 |
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| RJ01 | Rejection of invention patent application after publication |