CN109435204A - It is a kind of for controlling the cruise constant speed control system and method for Rubber Extruder - Google Patents
It is a kind of for controlling the cruise constant speed control system and method for Rubber Extruder Download PDFInfo
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- CN109435204A CN109435204A CN201811233737.2A CN201811233737A CN109435204A CN 109435204 A CN109435204 A CN 109435204A CN 201811233737 A CN201811233737 A CN 201811233737A CN 109435204 A CN109435204 A CN 109435204A
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Abstract
The invention belongs to extruder flow control technique fields, it proposes a kind of for controlling the cruise constant speed control system and method for Rubber Extruder, it is a kind of for controlling the cruise constant speed control system of Rubber Extruder, including being arranged in extruder, cruise constant speed instrument between dragger, the constant speed instrument that cruises includes detector interconnected, controller, controller is connected with frequency converter, frequency converter is connect with the motor for squeezing out adhesive tape flow for controlling extruder, detector includes interconnected for detecting the position detecting module for squeezing out adhesive tape location information, for handling the processor of position detecting module detection signal, position detecting module is arranged in extruder, between dragger, processor is connect with controller.The present invention solves the problems, such as that the extrusion flow of extruder in the prior art is inconsistent.
Description
Technical field
The invention belongs to extruder flow control technique fields, are related to a kind of for controlling the cruise constant speed of Rubber Extruder
Control system and method.
Background technique
Rubber Extruder product line group forming apparatus has extruder, dragger, cooling water tank etc..The motor of extruder, traction
The motor of machine is by Frequency Converter Control, to reach the adjustment of speed of production.But due to rubber product property of raw material and existing life
The factors such as producer's environment are produced, it cannot be guaranteed that the density of the rubber raw materials provided to extruder, so even the motor spiral shell of extruder
Bar invariablenes turning speed cannot guarantee that the extrusion output of rubber is consistent.
The speed of dragger will be consistent, and just can ensure that, guarantee product vulcanization effect the same by the time of curing cage.
Therefore when dragger curing cage speed is consistent, extruder extrusion output is inconsistent, will lead to the speed that product is extruded from extruder
It spends different, the product extruded from extruder is caused to be drawn between curing cage the sagging accumulation that product can occur or breaking,
Product quality is caused to be affected.
One can be arranged beside every extruder at present manually, when extrusion adhesive tape is different from extruder extruded velocity, into
The adjustment frequency converter that pedestrian is, to change the extruded velocity of extruder.Since artificial eye is observed and handles not prompt enough, cause
The size of product is different after product is expressed into vulcanization, cools down.Cause the rejection rate of production to reach 25% or more, causes raw material, people
The greater loss of work, electric power resource.
Summary of the invention
The present invention proposes a kind of for controlling the cruise constant speed control system and method for Rubber Extruder, solves existing skill
Extruder squeezes out the inconsistent problem of flow in art.
The technical scheme of the present invention is realized as follows:
It is a kind of for controlling the cruise constant speed control system of Rubber Extruder, comprising:
Cruise constant speed instrument between extruder, dragger is set, and the cruise constant speed instrument includes detection interconnected
Device, controller, the controller are connected with frequency converter, and the frequency converter squeezes out adhesive tape stream with for controlling the extruder
The motor of amount connects,
The detector includes interconnected for detecting the position detecting module for squeezing out adhesive tape location information, using
In the processor of processing position detecting module detection signal, the position detecting module is arranged in the extruder, the traction
Between machine, the processor is connect with the controller.
As further technical solution, the position detecting module includes being arranged in the extruder, the dragger
Between correlation photoelectric sensor, the correlation photoelectric sensor is connected with for determining the extrusion adhesive tape location information
Switch quantity acquisition circuit, the switch quantity acquisition circuit is connected to the processor,
The processor is built-in with the equalization module for switching value location information to be carried out to mean value, the equalization mould
Block is connect by the first signal conversion module for converting analog signals into digital signal with the controller.
As further technical solution, the equalization module uses following formula when carrying out mean value computation:
Wherein, X is the mean location of switching value, x1、x2…xnFor the lateral position of switching value, y1、y2…ynFor switching value
Lengthwise position, n be switching value group number.
As further technical solution, the correlation photoelectric sensor includes being separately positioned on the extrusion adhesive tape two
Transmitter, the light-receiving device of side, the light-receiving device are connect with the switch quantity acquisition circuit.
As further technical solution, the position detecting module includes sequentially connected
For detecting the vision camera for squeezing out adhesive tape position,
Decoding conversion module for being decoded to the video detected,
For storing decoded detection video frame, the reference background image for squeezing out adhesive tape target flexural position is deposited
Module is stored up,
The video frame contrast module being compared for will test video frame with reference background image,
The side for squeezing out adhesive tape, the video frame contrast module and the processor is arranged in the vision camera
Connection, the processor are built-in with the data processing mould for calculating adhesive tape change in location deviation in video frame contrast module
Block,
The data processing module is connect by second signal conversion module with the controller.
As further technical solution, the controller is built-in with proportional plus integral control module, the proportional integration control
Molding block is connect with the frequency converter,
The proportional plus integral control module is when controlling the frequency of the frequency converter, using algorithmic formula control as follows:
Δ Uk=Kp (1+T/Ti) ek-Kp*ek-1；
Wherein, Δ Uk is control output quantity, and Kp is proportionality coefficient, and T is the sampling period, and Ti is integral constant, ekFor kth time
The deviation of sampling instant input, ek-1For -1 sampling instant of kth input deviation,
Kp is the output valve of controller and the ratio institute value of input value, and T is preset Sampling time periods,
ek、ek-1For the extrusion adhesive tape physical location of processor input and the deviation of target position, Δ Uk is control output quantity, is used for
It controls the frequency converter and adjusts the second flow that extruder squeezes out the extrusion adhesive tape.
As further technical solution, it is connected between the memory module and the video frame contrast module for inciting somebody to action
The background subtraction module of prospect and background separation, foreground image and the reference background image of the extrusion adhesive tape for will obtain pass through
The video frame contrast module compares.
The present invention also proposes a kind of for controlling the cruise constant speed control method of Rubber Extruder, includes the following steps,
S1, position detection, the position detecting module issue detection signal and detect to the position for squeezing out adhesive tape,
It will test result and be transferred to the processor；
S2, position determine that the processor calculates the testing result in S1 by data and determines the position for squeezing out adhesive tape
Information, then location information is transferred to the controller；
S3, output quantity is obtained, the controller carries out data processing to the location information received in S2, exported
Amount, and output quantity is transferred to the frequency converter, the frequency converter squeezes out the extrusion to the extruder by the motor
The second flow of adhesive tape is controlled.
As further technical solution, which is characterized in that S1 specifically comprises the following steps:
S11, detection signal issue, and the transmitter generates the light array of multiple groups constant spacing, when extrusion adhesive tape is passed through,
It squeezes out adhesive tape and absorbs light, the light-receiving device senses the region that can't detect light, determines blocking position；
S12, location information output, the blocking position that light-receiving device described in S11 can't detect light trigger the switching value
Acquisition Circuit exports the amount of opening the light location information corresponding with blocking position to the processor；
S2 specifically comprises the following steps:
S21, equalization processing, the processor is by the amount of the opening the light positional information calculation out position mean value in S12, output bit
Confidence information signal；
S22, signal conversion, carry out signal conversion for the location information signal in S21, obtain position output signal, and will
Position output signal is transmitted to the controller；
S3 specifically comprises the following steps:
S31, data calculate, and the controller carries out the position signal of position output signal obtained in S22 and standard
It calculates, obtains output quantity,
S32, control output, are transferred to the frequency converter for output quantity obtained in S31, the frequency converter is to the motor
Revolving speed carry out control adjustment, control the extruder squeeze out it is described squeeze out adhesive tape second flow it is constant.
As further technical solution, S1 specifically comprises the following steps:
S13, video acquisition acquire the location information video for squeezing out adhesive tape using the vision camera；
S14, decoding conversion, are decoded location information video collected in S13, obtain decoding video, and will solution
Code video storage；
S2 specifically comprises the following steps:
S23, background subtraction carry out background subtraction to the decoding video in S14, obtain the foreground picture for squeezing out adhesive tape
Picture；
S24, it determines position, extracts the foreground image in S23, determine the current location for squeezing out adhesive tape；
S3 specifically comprises the following steps:
S33, video frame comparison, by the foreground image extracted in S24 and preset extrusion adhesive tape target flexural position
Reference background image be compared, obtain the deviation of adhesive tape change in location in foreground image and reference background image, and will
Deviation is transmitted to the controller；
S34, output quantity calculate, and the controller carries out proportional integration calculating to the deviation in S33, obtain control output
Amount；
Control output quantity in S34 is transmitted to the frequency converter by S35, output adjustment, and the frequency converter is to the motor
Revolving speed carry out control adjustment, it is constant that control extruder squeezes out the second flow for squeezing out adhesive tape.
The present invention is using principle and has the beneficial effect that
1, the cruise constant speed control system in the present invention includes cruise constant speed instrument, and cruise constant speed instrument is arranged in extruder, leads
Draw between machine, cruise constant speed instrument is used to control flow when squeezing out adhesive tape when extruder work, guarantees to squeeze out the curved of adhesive tape
Bent position is stablized, to guarantee the quality of product.
Cruise constant speed instrument includes detector, controller, and detector is used to detect the bending position that adhesive tape is squeezed out when production, inspection
Surveying device includes position detecting module, processor, and position detecting module can detect the actual flexion position that adhesive tape is squeezed out in production process
It sets and is compared again by processor with the target flexural position for squeezing out adhesive tape, determine the departure for squeezing out adhesive tape position, then will
Departure is sent to controller, and controller is connected with frequency converter, and frequency converter squeezes out adhesive tape flow with control extruder again
Motor connection, therefore controller can be according to departure adjustment to the output quantity of frequency converter, to reach adjustment motor screw speed
Purpose so that extruder squeeze out squeeze out adhesive tape second flow it is constant, guarantee squeeze out adhesive tape actual flexion position and target it is curved
Bent position consistency ensures the production quality of product.
2, correlation light can be used when detection squeezes out the actual flexion position of adhesive tape in position detecting module in the present invention
Correlation photoelectric sensor is arranged between extruder, dragger electric transducer, and correlation photoelectric sensor includes transmitting
Device, light-receiving device, transmitter, light-receiving device are separately positioned on the two sides for squeezing out adhesive tape, when extrusion adhesive tape passes through, can shelter from one
Distribute the light that emitter issues, light-receiving device can't detect corresponding light, thus trigger switch amount Acquisition Circuit, switch acquisition
Switching signal is sent to processor by circuit, and processor passes through according to the position for several groups of on-off models of detection changed
After filtering processing, location information is averaging processing by equalization module, unique location information is calculated, as extrusion
Physical location locating for adhesive tape, then convert 4~20mA standard signal for position signal and pass to controller, controller is according to defeated
The signal adjustment output quantity entered realizes the adjustment to adhesive tape bending position is squeezed out so as to adjust the revolving speed of the motor of extruder.
3, the position detecting module in the present invention can also lead to when detecting to the actual flexion position for squeezing out adhesive tape
Vision camera is crossed, vision camera is arranged in the side for squeezing out adhesive tape, can detecte the video for squeezing out adhesive tape, to view
Frequency is decoded by decoding conversion module, and decoded detection video frame can store in a storage module, in memory module also
It is stored with the reference background image for squeezing out adhesive tape target flexural position.
The detection video frame stored in memory module can also be handled by background subtraction module, will squeeze out adhesive tape as
Foreground image is separated with other background images in detection video frame, then the extrusion that will be obtained by video frame contrast module
The foreground image of adhesive tape is compared with the reference background image for squeezing out adhesive tape target flexural position, video frame contrast module and place
Device connection is managed, therefore comparing result can be transmitted in processor by video frame contrast module, processor is built-in with data processing mould
Block.Data processing module is calculated by the comparative information in video frame contrast module and squeezes out adhesive tape physical location and target position
Variation deviation, and by variation deviation be sent in controller.
Proportional plus integral control module is built-in in controller, proportional plus integral control module can calculate control according to variation deviation
Output quantity processed, then control output quantity is reached into frequency converter, frequency converter is controlled, so as to adjust the revolving speed of extruder motor, adjust
The extrusion flow of whole extruder squeezes out adhesive tape to ensure to guarantee that the physical location for squeezing out adhesive tape is stablized in target position
Produce quality.
4, in the present invention when carrying out cruise constant speed to extruder, it is necessary first to carry out position detection, position detecting module
Detection signal is issued, the physical location for squeezing out adhesive tape is detected, is transferred to processor in the position result that will test, is located
Reason device will do it data calculating after receiving testing result, to squeeze out the actual position information of adhesive tape, and by physical location
Information is transferred to controller, and controller will do it data processing after receiving actual position information, to obtain control output
Amount, then control output quantity is transferred to frequency converter, frequency converter is in the revolving speed for controlling extruder motor, thus to the extrusion of extruder
Flow is adjusted, and guarantees that extrusion flow is constant, thus guarantee that the extruded velocity for squeezing out adhesive tape is constant, the reality for the extrusion adhesive tape for being
Border bending position is stablized at target flexural position, ensures the production quality for squeezing out adhesive tape.
5, in the present invention when squeezing out the physical location of adhesive tape using correlation photoelectric sensor detection, transmitter meeting first
The light array for issuing multiple groups constant spacing, when extrusion adhesive tape passes through, light can be absorbed by squeezing out adhesive tape, and light-receiving device can sense
It can't detect the region of light, so that it is determined that blocking position, the position that light-receiving device can't detect light can trigger the amount of opening the light acquisition
Circuit, the amount of opening the light Acquisition Circuit can export switching value location information corresponding with blocking position to processor, built in processor
Equalization module can split light quantity location information calculated, export actual position information to controller, controller can pass through
What data calculated goes out output quantity, and output quantity is applied to frequency converter, is adjusted by revolving speed of the frequency converter to motor, and control is squeezed
The extrusion flow of machine out guarantees that the bending position for squeezing out adhesive tape is stablized, to protect the production quality for squeezing out adhesive tape.
6, it is taken the photograph first by vision in the present invention when squeezing out the actual flexion position of adhesive tape using vision camera detection
It as the bending position video of head acquisition extrusion adhesive tape, is decoded to collected video, obtains decoding video, and will decoding
Video storage.Background subtraction is carried out to the decoding video of storage again, the foreground image for squeezing out adhesive tape is obtained, determines and squeeze out adhesive tape
Actual flexion position.The reference map of the foreground image and the pre-stored target flexural position for squeezing out adhesive tape of adhesive tape will be squeezed out again
As being compared, the deviation of adhesive tape change in location is obtained, and be transferred to controller, controller passes through built-in proportional integration control
Molding block carries out proportional integration calculating to deviation, obtains control output quantity, and control output quantity is transferred to frequency converter, frequency converter
The revolving speed of motor is adjusted, so that the extrusion second flow of extruder is constant, to guarantee that the bending position for squeezing out adhesive tape is steady
It is fixed, ensure the production quality for squeezing out adhesive tape.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of correlation photoelectric sensor in the present invention；
Fig. 3 is the functional block diagram of the embodiment of the present invention one；
Fig. 4 is the functional block diagram of the embodiment of the present invention two；
In figure: 1- extruder, 2- dragger, 3- cruise constant speed instrument, and 4- detector, 41- position detecting module, 411- is to penetrating
Formula photoelectric sensor, 4111- transmitter, 4112- light-receiving device, 412- switch quantity acquisition circuit, 413- vision camera, 414- solution
Code conversion module, 415- memory module, 416- video frame contrast module, 417- background subtraction module, 42- processor, 421- are equal
Value module, 422- data processing module, 5- controller, 51- proportional plus integral control module, 6- frequency converter, 7- squeeze out adhesive tape, 8-
Motor, the first signal conversion module of 9-, 10- second signal conversion module.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is as shown in Figure 1 to 4, proposed by the present invention a kind of for controlling the cruise constant speed control system of Rubber Extruder,
Include:
Cruise constant speed instrument 3 between extruder 1, dragger 2 is set, and cruise constant speed instrument 3 includes detection interconnected
Device 4, controller 5, controller 5 are connected with frequency converter 6, and frequency converter 6 squeezes out 7 flow of adhesive tape with for controlling extruder 1
Motor 8 connects,
Detector 4 squeezes out the position detecting module 41 of 7 location information of adhesive tape, for locating for detecting including interconnected
The processor 42 that position detecting module 41 detects signal is managed, position detecting module 41 is arranged between extruder 1, dragger 2, place
Reason device 42 is connect with controller 5.
Cruise constant speed control system in the present invention includes cruise constant speed instrument 3, and cruise constant speed instrument 3 is arranged in extruder 1, leads
Draw between machine 2, cruise constant speed instrument 3 is used to control flow when squeezing out adhesive tape 7 when extruder 1 works, and guarantees to squeeze out adhesive tape 7
Bending position stablize, to guarantee the quality of product.
The constant speed instrument 3 that cruises includes detector 4, controller 5, and detector 4 is used to detect the bending position that adhesive tape 7 is squeezed out when production
It sets, detector 4 includes position detecting module 41, processor 42, and position detecting module 41 can detect extrusion adhesive tape 7 in production process
Actual flexion position pass through again processor 42 and squeeze out adhesive tape 7 target flexural position compare, determine squeeze out adhesive tape 7
The departure set, then departure is sent to controller 5, controller 5 are connected with frequency converter 6, frequency converter 6 again with control extruder
The motor 8 that 1 extrusion squeezes out 7 flow of adhesive tape connects, therefore controller 1 can adjust the output quantity to frequency converter 6 according to departure, from
And achieve the purpose that adjust 8 screw speed of motor, so that the second flow that extruder 1 squeezes out adhesive tape 7 is constant, guarantee to squeeze out glue
The actual flexion position of item 7 and target flexural position consistency, ensure the production quality of product.
Further, position detecting module 41 includes the correlation photoelectric sensor being arranged between extruder 1, dragger 2
411, correlation photoelectric sensor 411 is connected with for determining the switch quantity acquisition circuit 412 for squeezing out 7 location information of adhesive tape, is opened
Pass amount Acquisition Circuit 412 is connect with processor 42,
Processor 42 is built-in with the equalization module 421 for switching value location information to be carried out to mean value, equalization module
421 are connect by the first signal conversion module 9 for converting analog signals into digital signal with controller 5.
Further, equalization module 421 uses following formula when carrying out mean value computation:
Wherein, X is the mean location of switching value, x1、x2…xnFor the lateral position of switching value, y1、y2…ynFor switching value
Lengthwise position, n be switching value group number.
Further, correlation photoelectric sensor 411 include be separately positioned on squeeze out 7 two sides of adhesive tape transmitter 4111, by
Light device 4112, light-receiving device 4112 are connect with switch quantity acquisition circuit 412.
Correlation can be used when detection squeezes out the actual flexion position of adhesive tape 7 in position detecting module 41 in the present invention
Photoelectric sensor 411 correlation photoelectric sensor 411 is arranged between extruder 1, dragger 2, correlation photoelectric sensor
411 include transmitter 4111, light-receiving device 4112, and transmitter 4111, light-receiving device 4112 are separately positioned on the two sides for squeezing out adhesive tape 7,
When extrusion adhesive tape 7 passes through, the light that a part of transmitter 4111 issues can be sheltered from, light-receiving device 4112 can't detect corresponding
Light, thus trigger switch amount Acquisition Circuit 412, switching signal is sent to processor 42 by switch quantity acquisition circuit 412, processing
Location information is passed through mean value after filtering processing according to the position for several groups of on-off models of detection changed by device 42
Change module 421 to be averaging processing, calculate unique location information, as squeezing out physical location locating for adhesive tape 7, then by position
Confidence number is converted into 4~20mA standard signal and passes to controller 5, and controller 5 adjusts output quantity according to the signal of input, thus
The revolving speed of the motor 8 of extruder 1 is adjusted, realizes the adjustment to 7 bending position of adhesive tape is squeezed out.
Further, position detecting module 41 includes sequentially connected
For detecting the vision camera 413 for squeezing out 7 position of adhesive tape,
Decoding conversion module 414 for being decoded to the video detected,
For storing the storage of decoded detection video frame, the reference background image for squeezing out 7 target flexural position of adhesive tape
Module 415,
The video frame contrast module 416 being compared for will test video frame with reference background image,
The side for squeezing out adhesive tape 7 is arranged in vision camera 413, and video frame contrast module 416 is connect with processor 42, locates
Reason device 42 is built-in with the data processing module 422 for calculating adhesive tape change in location deviation in video frame contrast module 416,
Data processing module 422 is connect by second signal conversion module 10 with controller 5.
Further, controller 5 is built-in with proportional plus integral control module 51, and proportional plus integral control module 51 and frequency converter 6 connect
It connects,
Proportional plus integral control module 51 is when controlling the frequency of frequency converter 6, using algorithmic formula control as follows:
Δ Uk=Kp (1+T/Ti) ek-Kp*ek-1；
Wherein, Δ Uk is control output quantity, and Kp is proportionality coefficient, and T is the sampling period, and Ti is integral constant, ekFor kth time
The deviation of sampling instant input, ek-1For -1 sampling instant of kth input deviation,
Kp is the output valve of controller and the ratio institute value of input value, and T is preset Sampling time periods,
ek、ek-1For the extrusion adhesive tape physical location of processor input and the deviation of target position, Δ Uk is control output quantity, is used for
It controls frequency converter 6 and adjusts the second flow that extruder 1 squeezes out adhesive tape 7.
Further, it is connected between memory module 415 and video frame contrast module 416 for by prospect and background separation
Background subtraction module 417, the foreground image and reference background image of the extrusion adhesive tape 7 for will obtain compare mould by video frame
Block 416 compares.
Position detecting module 41 in the present invention can also lead to when detecting to the actual flexion position for squeezing out adhesive tape 7
Vision camera 413 is crossed, vision camera 413 is arranged in the side for squeezing out adhesive tape 7, can detecte the view for squeezing out adhesive tape 7
Frequently, video is being decoded by decoding conversion module 414, decoded detection video frame can be stored in memory module 415
In, the reference background image for squeezing out 7 target flexural position of adhesive tape is also stored in memory module 415.
The detection video frame stored in memory module 415 can also be handled by background subtraction module 417, will squeeze out glue
Item 7 is separated as foreground image with other background images in detection video frame, then will by video frame contrast module 416
The foreground image of obtained extrusion adhesive tape 7 is compared with the reference background image for squeezing out 7 target flexural position of adhesive tape, video frame
Contrast module 416 is connect with processor 42, therefore comparing result can be transmitted in processor 42 by video frame contrast module 416,
Processor 42 is built-in with data processing module 422.Data processing module 422 passes through the comparison letter in video frame contrast module 416
Breath calculates the variation deviation for squeezing out 7 physical location of adhesive tape and target position, and variation deviation is sent to controller 5
In.
Proportional plus integral control module 51 is built-in in controller 5, proportional plus integral control module 51 can be according to variation deviation
Control output quantity is calculated, then control output quantity is reached into frequency converter, frequency converter 6 is controlled, so as to adjust extruder motor 8
Revolving speed, adjust extruder 1 extrusion flow, with guarantee squeeze out adhesive tape 7 physical location stablize in target position, to ensure
Squeeze out the production quality of adhesive tape 7.
The present invention also proposes a kind of for controlling the cruise constant speed control method of Rubber Extruder, includes the following steps,
S1, position detection, position detecting module 41 issue detection signal and detect to the position for squeezing out adhesive tape 7, will examine
It surveys result and is transferred to processor 42；
S2, position determine that processor 42 calculates the testing result in S1 by data and determines that the position for squeezing out adhesive tape 7 is believed
Breath, then location information is transferred to controller 5；
S3, output quantity is obtained, controller 5 carries out data processing to the location information received in S2, obtains output quantity, and
Output quantity is transferred to frequency converter 6, frequency converter 6 is controlled by the second flow that motor 8 squeezes out adhesive tape 7 to extruder 1.
In the present invention when carrying out cruise constant speed to extruder 4, it is necessary first to carry out position detection, position detecting module 41
Detection signal is issued, the physical location for squeezing out adhesive tape 7 is detected, is transferred to processor in the position result that will test
42, processor 42 will do it data calculating after receiving testing result, to squeeze out the actual position information of adhesive tape 7, and will
Actual position information is transferred to controller 5, and controller 5 will do it data processing after receiving actual position information, thus
Be transferred to frequency converter 6 to control output quantity, then by control output quantity, frequency converter 6 control 1 motor 8 of extruder revolving speed, thus
The extrusion flow of extruder 1 is adjusted, guarantees that extrusion flow is constant, thus guarantee that the extruded velocity for squeezing out adhesive tape 7 is constant,
The actual flexion position for the extrusion adhesive tape 7 for being is stablized at target flexural position, ensures the production quality for squeezing out adhesive tape 7.
Further, S1 specifically comprises the following steps:
S11, detection signal issue, and transmitter 4111 generates the light array of multiple groups constant spacing, squeeze out adhesive tape 7 and pass through
When, it squeezes out adhesive tape 7 and absorbs light, light-receiving device 4112 senses the region that can't detect light, determines blocking position；
S12, location information export, and light-receiving device 4112 can't detect the blocking position trigger switch amount acquisition of light in S11
Circuit 412 exports the amount of opening the light location information corresponding with blocking position to processor 42；
S2 specifically comprises the following steps:
S21, equalization processing, processor 42 is by the amount of the opening the light positional information calculation out position mean value in S12, output position
Information signal；
S22, signal conversion, carry out signal conversion for the location information signal in S21, obtain position output signal, and will
Position output signal is transmitted to controller 5；
S3 specifically comprises the following steps:
S31, data calculate, and controller 5 counts the position signal of position output signal obtained in S22 and standard
It calculates, obtains output quantity,
S32, control output, are transferred to frequency converter 6 for output quantity obtained in S31, frequency converter 6 to the revolving speed of motor 8 into
Row control adjustment, the second flow that control extruder 1 squeezes out adhesive tape 7 are constant.
In the present invention when squeezing out the physical location of adhesive tape 7 using the detection of correlation photoelectric sensor 411, transmitter first
4111 can issue the light array of multiple groups constant spacing, and when extrusion adhesive tape 7 passes through, light, light-receiving device can be absorbed by squeezing out adhesive tape 7
4112 can sense the region that can't detect light, so that it is determined that blocking position, light-receiving device 4122 can't detect the position of light
The amount of opening the light Acquisition Circuit 412 can be triggered, the amount of opening the light Acquisition Circuit 412 can export switching value corresponding with blocking position position letter
To processor 42, the split light quantity location information of the meeting of equalization module 421 built in processor 42 is calculated breath, exports actual bit
Confidence is ceased to controller 5, and what controller 5 can be calculated by data goes out output quantity, and output quantity is applied to frequency converter 6, passes through change
Frequency device 6 is adjusted the revolving speed of motor 8, controls the extrusion flow of extruder 1, guarantees that the bending position for squeezing out adhesive tape 7 is stablized,
To protect the production quality for squeezing out adhesive tape 7.
Further, S1 specifically comprises the following steps:
S13, video acquisition acquire the location information video for squeezing out adhesive tape 7 using vision camera 413；
S14, decoding conversion, are decoded location information video collected in S13, obtain decoding video, and will solution
Code video storage；
S2 specifically comprises the following steps:
S23, background subtraction carry out background subtraction to the decoding video in S14, obtain the foreground image for squeezing out adhesive tape 7；
S24, it determines position, extracts the foreground image in S23, determine the current location for squeezing out adhesive tape 7；
S3 specifically comprises the following steps:
S33, video frame comparison, by the foreground image extracted in S24 and preset 7 target flexural position of extrusion adhesive tape
Reference background image be compared, obtain the deviation of adhesive tape change in location in foreground image and reference background image, and will
Deviation is transmitted to controller 5；
S34, output quantity calculate, and controller 5 carries out proportional integration calculating to the deviation in S33, obtain control output quantity；
Control output quantity in S34 is transmitted to frequency converter 6 by S35, output adjustment, frequency converter 6 to the revolving speed of motor 8 into
Row control adjustment, the second flow that control extruder 1 squeezes out adhesive tape 7 are constant.
In the present invention when squeezing out the actual flexion position of adhesive tape 7 using the detection of vision camera 413, pass through vision first
The acquisition of camera 413 squeezes out the bending position video of adhesive tape 7, is decoded to collected video, obtains decoding video, and
Decoding video is stored.Background subtraction is carried out to the decoding video of storage again, the foreground image for squeezing out adhesive tape 7 is obtained, determines and squeeze
The actual flexion position of adhesive tape 7 out.The foreground image and the pre-stored target flexural for squeezing out adhesive tape 7 of adhesive tape 7 will be squeezed out again
The benchmark image of position is compared, and obtains the deviation of adhesive tape change in location, and is transferred to controller 5, and controller 5 passes through interior
The proportional plus integral control module 51 set carries out proportional integration calculating to deviation, obtains control output quantity, and control output quantity is passed
It is defeated by frequency converter 6, frequency converter 6 is adjusted the revolving speed of motor 8, so that the extrusion second flow of extruder 1 is constant, to guarantee
The bending position for squeezing out adhesive tape 7 is stablized, and ensures the production quality for squeezing out adhesive tape 7.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of for controlling the cruise constant speed control system of Rubber Extruder, which is characterized in that including being arranged in extruder
(1), the cruise constant speed instrument (3) between dragger (2), the cruise constant speed instrument (3) include detector interconnected (4), control
Device (5) processed, the controller (5) are connected with frequency converter (6), and the frequency converter (6) squeezes out with for controlling the extruder (1)
Motor (8) connection of adhesive tape (7) flow is squeezed out,
The detector (4) includes interconnected for detecting the position detecting module for squeezing out adhesive tape (7) location information
(41), for handling the processor (42) of position detecting module (41) detection signal, position detecting module (41) setting exists
Between the extruder (1), the dragger (2), the processor (42) connect with the controller (5).
2. according to claim 1 a kind of for controlling the cruise constant speed control system of Rubber Extruder, which is characterized in that
The position detecting module (41) includes the correlation photoelectric sensing being arranged between the extruder (1), the dragger (2)
Device (411), the correlation photoelectric sensor (411) are connected with for determining the switch for squeezing out adhesive tape (7) location information
It measures Acquisition Circuit (412), the switch quantity acquisition circuit (412) connect with the processor (42),
The processor (42) is built-in with the equalization module (421) for switching value location information to be carried out to mean value, described equal
Value module (421) passes through the first signal conversion module (9) and the control for converting analog signals into digital signal
Device (5) connection.
3. according to claim 1 a kind of for controlling the cruise constant speed control system of Rubber Extruder, which is characterized in that
The equalization module (421) uses following formula when carrying out mean value computation:
Wherein, X is the mean location of switching value, x1、x2…xnFor the lateral position of switching value, y1、y2…ynFor the vertical of switching value
To position, n is the group number of switching value.
4. according to claim 2 a kind of for controlling the cruise constant speed control system of Rubber Extruder, which is characterized in that
The correlation photoelectric sensor (411) includes being separately positioned on the transmitter (4111) for squeezing out adhesive tape (7) two sides, light
Device (4112), the light-receiving device (4112) connect with the switch quantity acquisition circuit (412).
5. according to claim 1 a kind of for controlling the cruise constant speed control system of Rubber Extruder, which is characterized in that
The position detecting module (41) includes sequentially connected
For detecting the vision camera (413) for squeezing out adhesive tape (7) position,
Decoding conversion module (414) for being decoded to the video detected,
For storing decoded detection video frame, the reference background image for squeezing out adhesive tape (7) target flexural position is deposited
It stores up module (415),
The video frame contrast module (416) being compared for will test video frame with reference background image,
The vision camera (413) setting in the side for squeezing out adhesive tape (7), the video frame contrast module (416) with
Processor (42) connection, the processor (42) are built-in with for calculating adhesive tape position in video frame contrast module (416)
Change the data processing module (422) of deviation,
The data processing module (422) is connect by second signal conversion module (10) with the controller (5).
6. according to claim 5 a kind of for controlling the cruise constant speed control system of Rubber Extruder, which is characterized in that
The controller (5) is built-in with proportional plus integral control module (51), the proportional plus integral control module (51) and the frequency converter
(6) it connects,
The proportional plus integral control module (51) is when controlling the frequency of the frequency converter (6), using algorithmic formula control as follows:
Δ Uk=Kp (1+T/Ti) ek-Kp*ek-1；
Wherein, Δ Uk is control output quantity, and Kp is proportionality coefficient, and T is the sampling period, and Ti is integral constant, ekFor kth time sampling
The deviation of moment input, ek-1For -1 sampling instant of kth input deviation,
Kp is the output valve of controller and the ratio institute value of input value, and T is preset Sampling time periods, ek、ek-1
For the extrusion adhesive tape physical location of processor input and the deviation of target position, Δ Uk is control output quantity, for controlling
It states frequency converter (6) and adjusts the second flow that extruder (1) squeezes out extrusion adhesive tape (7).
7. according to claim 5 a kind of for controlling the cruise constant speed control system of Rubber Extruder, which is characterized in that
It is connected between the memory module (415) and the video frame contrast module (416) for by the back of prospect and background separation
Scape reduces module (417), and the foreground image and reference background image of the extrusion adhesive tape (7) for will obtain pass through the video frame
Contrast module (416) compares.
8. a kind of for controlling the cruise constant speed control method of Rubber Extruder, which is characterized in that include the following steps,
S1, position detection, the position detecting module (41) issue detection signal and examine to the position for squeezing out adhesive tape (7)
It surveys, will test result and be transferred to the processor (42)；
S2, position determine that the processor (42) calculates the testing result in S1 by data and determines the position for squeezing out adhesive tape (7)
Confidence breath, then location information is transferred to the controller (5)；
S3, output quantity is obtained, the controller (5) carries out data processing to the location information received in S2, obtains output quantity,
And be transferred to output quantity the frequency converter (6), the frequency converter (6) squeezes out the extruder (1) by the motor (8)
The second flow for squeezing out adhesive tape (7) is controlled.
9. according to claim 8 a kind of for controlling the cruise constant speed control method of Rubber Extruder (1), feature exists
In S1 specifically comprises the following steps:
S11, detection signal issue, and the transmitter (4111) generates the light array of multiple groups constant spacing, squeeze out adhesive tape (7) warp
It is out-of-date, it squeezes out adhesive tape (7) and absorbs light, the light-receiving device (4112) senses the region that can't detect light, and position is blocked in determination
It sets；
S12, location information output, the blocking position that light-receiving device described in S11 (4112) can't detect light trigger the switch
It measures Acquisition Circuit (412), exports the amount of opening the light location information corresponding with blocking position to the processor (42)；
S2 specifically comprises the following steps:
S21, equalization processing, the processor (42) is by the amount of the opening the light positional information calculation out position mean value in S12, output bit
Confidence information signal；
S22, signal conversion, carry out signal conversion for the location information signal in S21, obtain position output signal, and by position
Output signal is transmitted to the controller (5)；
S3 specifically comprises the following steps:
S31, data calculate, and the controller (5) counts the position signal of position output signal obtained in S22 and standard
It calculates, obtains output quantity,
S32, control output, output quantity obtained in S31 are transferred to the frequency converter (6), the frequency converter (6) is to the electricity
The revolving speed of machine (8) carries out control adjustment, and it is constant to control the extruder (1) extrusion second flow for squeezing out adhesive tape (7).
10. according to claim 8 a kind of for controlling the cruise constant speed control method of Rubber Extruder (1), feature
It is, S1 specifically comprises the following steps:
S13, video acquisition acquire the location information video for squeezing out adhesive tape (7) using the vision camera (413)；
S14, decoding conversion, are decoded location information video collected in S13, obtain decoding video, and decoding is regarded
Frequency stores；
S2 specifically comprises the following steps:
S23, background subtraction carry out background subtraction to the decoding video in S14, obtain the foreground image for squeezing out adhesive tape (7)；
S24, it determines position, extracts the foreground image in S23, determine the current location for squeezing out adhesive tape (7)；
S3 specifically comprises the following steps:
S33, video frame comparison, by the foreground image extracted in S24 and preset extrusion adhesive tape (7) target flexural position
Reference background image is compared, and obtains the deviation of adhesive tape change in location in foreground image and reference background image, and will be inclined
Differential transmission is to the controller (5)；
S34, output quantity calculate, and the controller (5) carries out proportional integration calculating to the deviation in S33, obtain control output
Amount；
Control output quantity in S34 is transmitted to the frequency converter (6) by S35, output adjustment, and the frequency converter (6) is to the electricity
The revolving speed of machine (8) carries out control adjustment, and it is constant that control extruder (1) squeezes out the second flow for squeezing out adhesive tape (7).
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Application publication date: 20190308 |