CN110716521A - Control method of stranding machine and stranding control system - Google Patents
Control method of stranding machine and stranding control system Download PDFInfo
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- CN110716521A CN110716521A CN201911046284.7A CN201911046284A CN110716521A CN 110716521 A CN110716521 A CN 110716521A CN 201911046284 A CN201911046284 A CN 201911046284A CN 110716521 A CN110716521 A CN 110716521A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0036—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32252—Scheduling production, machining, job shop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The application discloses a control method of a stranding machine and a stranding control system, wherein the method comprises the steps of receiving the running frequency of a host through host control equipment, and controlling the running of a stranding motor according to the running frequency of the host, wherein the running frequency of the host is the running frequency of the stranding motor; receiving an input electronic gear ratio through a drawing control device, and controlling a drawing motor to operate according to the input electronic gear ratio; calculating the operating frequency of a wire arranging motor according to the operating frequency of a host by wire arranging control equipment, and controlling the wire arranging motor to operate according to the operating frequency of the wire arranging motor; receiving a preset tension value through the winding control equipment, and carrying out closed-loop adjustment according to the preset tension value and the collected tension signal so as to enable the rotating speed or the torque of the winding motor to be within a preset range. In this way, this application can be to drawing get, winding displacement and rolling realization integrated control, reduce cost, and can real-time adjustment pitch, improve the rolling quality.
Description
Technical Field
The application relates to the technical field of integrated control, in particular to a control method of a stranding machine and a stranding control system.
Background
The wire twisting machine is a twisting mechanical device which can be widely applied to various soft/hard conductor wires (such as copper wires, enameled wires, tinned wires, copper-clad steel or copper-clad aluminum and the like) and electronic wires (such as power wires, earphone wires, telephone wires or winding wires and the like); the principle of the stranding machine is that copper wires penetrate through a stranding bow on the stranding machine, and the stranding bow enables the single copper wires to be spirally wound together in a circular motion mode; copper wires with different specifications and different numbers are stranded together according to a certain arrangement sequence and a certain lay length to form a conductor with a larger diameter, the stranded conductor is much softer than a single copper wire with the same diameter, and the bending performance of the manufactured electric wire is also better.
The process integrated control system of the stranding machine is a small stranding machine system, and comprises a liquid crystal display screen, a screw rod structure, a stranding motor, a wire arranging motor, a leading and taking motor, a winding motor and the like to form a complete stranding machine process integrated control system; the existing stranding process integration is realized by a Programmable Logic Controller (PLC) and a plurality of control modules, the data timeliness is low, the size is large, the mechanical structure is complex, the installation difficulty of the system is large, the control stability of a stranding motor, a leading motor, a winding motor and a winding motor in the prior art is poor, and better process integration control cannot be achieved.
The wire arranging motor control occupies an important position in the wire stranding process, the traditional wire arranging motor does not allow the adjustment of parameters in the operation process, and the parameters can be adjusted only after the system is stopped, so that the production efficiency and the control flexibility are reduced; when the pitch needs to be adjusted in the traditional extraction, the mechanical gear needs to be replaced manually, so that the labor cost is increased; the existing stranded wire control has low production efficiency, needs to manually replace a mechanical gear corresponding to different process requirements, is complex in mechanical structure, large in installation difficulty, short in service life, large in size and weight, high in cost and low in cost performance, occupies large space resources, cannot reflect the optimum in cost, is low in flexibility and poor in data transmission timeliness, and therefore the whole process needs to be perfected to achieve better process integrated control in the face of the defects.
Disclosure of Invention
The problem that the application mainly solves is to provide a control method and a stranded conductor control system of a stranded conductor machine, can realize integrated control to drawing, winding displacement and rolling, reduce cost, and can adjust the lay length in real time, improve the rolling quality.
In order to solve the technical problem, the technical scheme adopted by the application is as follows: the control method of the stranding machine is applied to a stranding control system, the stranding control system comprises a control device, a stranding motor, a leading motor, a wire arranging motor and a winding motor, the control device comprises a host control device, a leading control device, a wire arranging control device and a winding control device, and the method comprises the following steps: receiving the host operating frequency through the host control equipment, and controlling the strand motor to operate according to the host operating frequency, wherein the host operating frequency is the operating frequency of the strand motor; receiving an input electronic gear ratio through a drawing control device, and controlling a drawing motor to operate according to the input electronic gear ratio; calculating the operating frequency of a wire arranging motor according to the operating frequency of a host by wire arranging control equipment, and controlling the wire arranging motor to operate according to the operating frequency of the wire arranging motor; receiving a preset tension value through the winding control equipment, and carrying out closed-loop adjustment according to the preset tension value and the collected tension signal so as to enable the rotating speed or the torque of the winding motor to be within a preset range.
In order to solve the above technical problem, another technical solution adopted by the present application is: the stranded wire control system comprises a control device, a stranded wire motor, a drawing motor, a wire arranging motor and a winding motor, wherein the stranded wire motor, the drawing motor, the wire arranging motor and the winding motor are connected with the control device; the main machine control equipment is used for receiving the main machine operation frequency and controlling the strand motor to operate according to the main machine operation frequency, wherein the main machine operation frequency is the operation frequency of the strand motor; the drawing control equipment is used for receiving an input electronic gear ratio and controlling the operation of the drawing motor according to the input electronic gear ratio; the winding displacement control equipment is used for calculating the operating frequency of the winding displacement motor according to the operating frequency of the host and controlling the winding displacement motor to operate according to the operating frequency of the winding displacement motor; the winding control equipment is used for receiving a preset tension value and carrying out closed-loop adjustment according to the preset tension value and the collected tension signal so that the rotating speed or the torque of the winding motor is within a preset range.
Through the scheme, the beneficial effects of the application are that: the wire twisting motor, the drawing motor, the wire arranging motor and the winding motor are respectively controlled by the host control device, the drawing control device, the wire arranging control device and the winding control device, so that integrated control of drawing, wire arranging and winding can be realized, the control cost is reduced, the twisting pitch can be adjusted by modifying the electronic gear ratio in the running process of the drawing motor, the drawing wheel does not need to be stopped and manually replaced, the real-time adjustment of the twisting pitch is realized, and the labor cost is reduced; in addition, the wire arranging parameters can be adjusted in the operation process of the wire stranding control system, the wire arranging effect is improved, the machine does not need to be stopped to modify the parameters, and the wire arranging efficiency is improved; and in the running process of the winding motor, the precision of tension control can be improved by utilizing closed-loop control, the winding quality is improved, full-automatic electronic winding can be realized, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural diagram of an embodiment of a strand control system provided herein;
FIG. 2 is a schematic flow chart illustrating an embodiment of a method for controlling a wire twisting machine according to the present disclosure;
fig. 3 is a schematic flowchart of another embodiment of a control method of a wire twisting machine provided by the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a wire twisting control system provided in the present application, the wire twisting control system includes a control device 10, and a wire twisting motor 21, a drawing motor 22, a wire arranging motor 23, and a winding motor 24 connected to the control device 10, the control device 10 includes a host control device 11, a drawing control device 12, a wire arranging control device 13, and a winding control device 14.
The host control device 11 is configured to receive a host operating frequency, and control the strand motor 21 to operate according to the host operating frequency, where the host operating frequency is a frequency at which the strand motor 21 operates; the main machine control device 11 controls the strand motor 21 to rotate at the main machine operation frequency after receiving the main machine operation frequency set by the operator.
The speed of the operation speed of the wire twisting motor 21 can influence the speeds of the drawing motor 22 and the wire arranging motor 23, the pitch and the row pitch are influenced, the wire twisting motor 21, the drawing motor 22 and the wire arranging motor 23 independently operate, but the motors are required to be coordinated with each other as a process field, the operation speed is mainly reflected, and the coordination of the operation speeds of the three motors can ensure the stability of a wire twisting control system.
The integrated control of technology of stranding machine possesses different communication function, and it includes two kinds: one is RS485 communication, and the other is wireless communication, so that the information transmission rate can be improved, and the data timeliness can be improved.
In a specific embodiment, the stranded wire control system further includes a Human machine interaction device 30 (HMI), and under the RS485 communication function, the Human machine interaction device 30 directly realizes data communication with the corresponding control device, that is, the Human machine interaction device 30 directly communicates with the host control device 11, the withdrawing control device 12, the winding displacement control device 13, and the winding control device 14; under the wireless communication function, the human-computer interaction device 30 sends data to the host control device 11, the host control device 11 forwards the data to the corresponding control device, that is, the human-computer interaction device 30 communicates with the host control device 11, and the host control device 11 communicates with the drawing control device 12, the winding displacement control device 13 and the winding control device 14 respectively.
Data transmitted by RS485 communication and data transmitted by wireless communication can be transmitted to the human-computer interaction device 30, and the data is updated and displayed on the human-computer interaction device 30 in real time; basic operation instructions can be set on the human-computer interaction equipment 30, and the operation is simple and flexible; for example, the winding displacement control parameters can be adjusted during the operation of the strand control system, such as: the step length of the flat cable is adjusted at the left side or the step length of the flat cable is adjusted at the right side.
The extraction control device 12 is communicable with the host control device 11, and is configured to receive an input electronic gear ratio and control the operation of the extraction motor 22 according to the input electronic gear ratio; the input electronic gear ratio is set by an operator, and when the diameter of the leading wheel is fixed, the electronic gear ratio is changed to adjust the pitch, so that the online adjustment of the pitch can be realized by adjusting the input electronic gear ratio without stopping the machine.
The flat cable control device 13 can communicate with the host control device 11, and is configured to calculate an operating frequency of the flat cable motor 23 according to the host operating frequency, and control the operation of the flat cable motor 23 according to the operating frequency of the flat cable motor 23; after receiving a start instruction issued by an operator, the winding displacement control device 13 may drive the winding displacement motor 23, and adjust the operating frequency of the winding displacement motor 23 according to the operating frequency of the wire twisting motor 21, so as to realize winding displacement control.
The winding control device 14 can communicate with the host control device 11, and is configured to receive a preset tension value, and perform closed-loop adjustment according to the preset tension value and the collected tension signal, so that the rotation speed or torque of the winding motor 24 is within a preset range; the unstable control of the stranded wire control system may cause insufficient stability of the winding tension control, after the winding is powered on, an operator can send a preset tension value through the human-computer interaction device 30, the winding control device 14 receives the preset tension value set by the operator and collects a tension feedback value in real time, closed-loop control is performed on the winding motor 24 according to tension deviation between the preset tension value and the tension feedback value, a constant tension value is output, the rotating speed or the torque of the winding motor 24 is guaranteed to be constant, and the winding motor 24 is controlled.
The stranded wire control system can realize integrated control on stranded wires, drawing, arranging wires and winding, all control devices complement each other, the integration performance is high, and when one side has a fault, the stranded wire control system cannot normally operate; one-key start-up, one-key stop, fault reset or emergency stop buttons may be provided for control.
After the operator issues a one-key startup instruction or a one-key shutdown instruction, the human-computer interaction device 30 may issue instructions to the host control device 11, the take-up control device 12, the winding displacement control device 13, and the winding control device 14 at the same time; specifically, after receiving the start instruction, the wire twisting motor 21, the drawing motor 22, the wire arranging motor 23 and the winding motor 24 operate simultaneously, and after receiving the stop instruction, the wire twisting motor 21, the drawing motor 22, the wire arranging motor 23 and the winding motor 24 stop simultaneously.
When the stranded wire control system has a fault, an operator can clear the fault of each control device by issuing a fault reset instruction and restart the control device after the fault reset is finished; specifically, when a problem or an emergency occurs in the strand control system, an emergency stop instruction can be generated by an emergency stop button (not shown in the figure) to rapidly stop the strand control system, the emergency stop button is connected with the control device 10, and when the emergency stop button is pressed, an emergency stop signal is effective; when the emergency stop button bounces, the emergency stop signal is invalid; when the emergency stop button is pressed, the generated digital quantity signal is transmitted to the control device 10, so that the control device 10 receives an effective emergency stop signal and responds timely, and the emergency stop can be stably stopped when an emergency fault occurs.
When each control device is controlled, the overall control or the individual control can be adopted, when the individual control is carried out, the control devices are not influenced, even if the control device fails, the operation of other control devices can not be influenced, different motors can be independently controlled through an individual control interface, control parameters and process parameters are adjusted, and after the adjustment is finished, the stranded wire control system can stably operate, wherein the control parameters comprise the host machine operation frequency, the input electronic gear ratio or the preset tension value; when the integral control is carried out, as long as the control equipment with faults exists, the stranded wire control system stops running, and the simultaneous control of all the control equipment is realized.
The stranded wire control system provided by the embodiment can realize integrated control on drawing, winding and winding, reduces the control cost, has no redundancy, can adjust the lay length by modifying the electronic gear ratio in the operation process of the drawing motor 22, does not need to shut down to manually replace a mechanical drawing wheel, and realizes real-time adjustment of the lay length; in the operation process of the winding motor 24, closed-loop control is performed by receiving a preset tension value and a tension signal, so that the tension control precision can be improved, the winding quality can be improved, full-automatic electronic winding can be realized, the integration level is high, the winding motor can be applied to a small-sized wire twisting machine, and the production efficiency is high; the stranded wire control system is simple in structure, small in size, light in weight, convenient to install, high in automatic performance and strong in information transmission timeliness.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating a control method of a wire twisting machine according to an embodiment of the present application, where the control method of the wire twisting machine is applied to a wire twisting control system, and the method includes:
step 21: and receiving the host operating frequency through the host control equipment, and controlling the stranded wire motor to operate according to the host operating frequency.
The main machine operating frequency is the operating frequency of the wire twisting motor, and the main machine control equipment can receive the operating frequency of the wire twisting motor input by an operator and control the wire twisting motor to operate at the operating frequency.
Step 22: and receiving an input electronic gear ratio through the drawing control equipment, and controlling the operation of the drawing motor according to the input electronic gear ratio.
The electronic gear ratio is related to the pitch, the pitch can be adjusted on line in real time by adjusting the input electronic gear ratio, the leading and taking control equipment can judge whether the pitch needs to be adjusted or not by using the input electronic gear ratio after receiving the electronic gear ratio input by an operator, and if the pitch needs to be adjusted, the leading and taking motor is controlled to rotate at a corresponding speed.
Step 23: and calculating the running frequency of the wire arranging motor by the wire arranging control equipment according to the running frequency of the host, and controlling the wire arranging motor to run according to the running frequency of the wire arranging motor.
The wire arranging control equipment can drive the wire arranging motor to operate after receiving an instruction sent by an operator, and receives the host operating frequency sent by the host control equipment to control the wire arranging motor, so that the operating frequency of the wire arranging motor is changed along with the operating frequency of the wire twisting motor.
Step 24: receiving a preset tension value through the winding control equipment, and carrying out closed-loop adjustment according to the preset tension value and the collected tension signal so as to enable the rotating speed or the torque of the winding motor to be within a preset range.
The difference value between the upper limit value and the lower limit value of the preset range is smaller, the winding control device can receive the preset tension value set by an operator, closed-loop adjustment is carried out according to the preset tension value and the sampled analog tension signal, a constant tension value is output, and the rotating speed or the torque of the winding motor is guaranteed to be constant.
The control method of the stranding machine provided by the embodiment can realize integrated control on drawing, winding and winding, reduce the control cost, adjust the stranding distance by modifying the ratio of the electronic gear in the operation process of the drawing motor, and realize online real-time adjustment of the stranding distance without stopping and manually replacing a mechanical drawing wheel; in addition, the precision of tension control is improved through closed-loop control in the operation process of the winding motor, the winding quality can be improved, full-automatic electronic winding can be realized, and the improvement of the production efficiency is facilitated.
Referring to fig. 3, fig. 3 is a schematic flowchart illustrating a control method of a wire twisting machine according to another embodiment of the present application, where the control method of the wire twisting machine is applied to a wire twisting control system, and the method includes:
step 301: the man-machine interaction device judges whether the communication with the host control device is disconnected.
When the strand control system is initialized and has no fault, an operator can issue a control instruction, parameter setting can be carried out through the human-computer interaction device, and data communication can be carried out between the host control device and the human-computer interaction device through RS 485.
The man-machine interaction device can comprise a liquid crystal display screen, the liquid crystal display screen can display a plurality of interfaces, different interfaces can show different functions, for example, a state display interface, an instruction setting interface and a parameter setting interface, parameters in the state display interface comprise data such as the state of a stranded wire control system, bus voltage, motor operation frequency, output current or temperature, the instruction setting interface comprises functions such as operation, shutdown or fault reset, the parameter setting interface comprises settings of stranded wire control parameters, flat cable control parameters, drawing control parameters and winding control parameters, and each control parameter comprises corresponding motor parameters.
An operator selects a host control interface, a leading control interface, a winding control interface or a wire arrangement control interface through a liquid crystal display screen to realize control, and when the overall control is carried out, the main interface can simultaneously display data fed back by the host control equipment, the leading control equipment, the wire arrangement control equipment and the winding control equipment; and when the control is carried out independently, each interface only displays the state parameters of the corresponding control equipment.
When the wire arranging control equipment is controlled, an operator can issue an instruction through a wire arranging control interface in the liquid crystal display screen, the instruction is transmitted to the wire arranging control equipment through the host control equipment, when the host control equipment and the wire arranging control equipment lose communication capacity, a communication fault is uploaded, the stranded wire control system cannot continue to operate, the stranded wire control system is protected, and meanwhile detailed information of the fault is displayed.
The liquid crystal display screen and the drawing control device/the winding control device can realize RS485 communication or wireless communication, and an appropriate communication type can be selected according to the process requirement; under the RS485 communication function, the corresponding control equipment is controlled according to different instruction words, the control error phenomenon is avoided, and the type of the corresponding control equipment can be determined according to the target address and the source address; when wireless communication is carried out, the control device from which data comes or the control device to which data is issued is confirmed through the data address range.
Step 302: and if the communication between the human-computer interaction equipment and the host control equipment is disconnected, the human-computer interaction equipment receives the reconfigured communication parameters, so that the communication parameters of the human-computer interaction equipment are the same as the communication parameters of the host control equipment.
The communication parameters comprise bit rate or communication address, when communication fails, the interface of the liquid crystal display screen displays communication faults, communication connection needs to be carried out again at the moment, the communication bit rate and the communication address are reconfigured or restarting is carried out, an operator sends an instruction to the host control equipment through the liquid crystal display screen, and the host control equipment executes corresponding operation according to the received instruction.
The stranded wire control system has different parameter storage functions, wherein the parameter storage functions comprise manual parameter storage and automatic parameter storage, and the stranded wire control system is specifically as follows:
in a specific embodiment, after receiving a download instruction, the human-computer interaction device may send the client parameters stored in the human-computer interaction device to the control apparatus, where the download instruction is used to indicate whether to download the client parameters, and the client parameters include motor parameters or function parameters, which include setting parameters of each control device and command parameters for controlling the control device; the control device stores the received client parameters after receiving a parameter storage instruction sent by the human-computer interaction equipment, and sends the stored client parameters to the human-computer interaction equipment after receiving a copy instruction sent by the human-computer interaction equipment so that the human-computer interaction equipment stores the client parameters in a data storage area; specifically, when the manual parameters are saved, an operator presses a parameter saving button to save the parameters, saves the client parameters in the control device to a data storage area of the human-computer interaction device through a parameter copying button, and downloads the parameters saved in the human-computer interaction device to the control device through a parameter downloading button.
In other embodiments, when the power-on completion flag is valid, the control device may determine whether the input power voltage (bus voltage) is less than a preset voltage threshold; if the input power supply voltage is smaller than the preset voltage threshold, automatically storing the received customer parameters; the automatic parameter storage can be used for emergency or the condition that the parameter is forgotten to be stored after being modified, the input power supply voltage is judged, and if the input power supply voltage is reduced below an undervoltage protection point, the parameter is automatically stored in the control device; the automatic saving function is not only executed before the operation frequency of the host is received, but also can be executed before, during and after the operation as long as the actual bus voltage is less than the undervoltage protection point, so that the condition that the parameters are modified and the saving is forgotten is prevented.
Step 303: and receiving the host operating frequency through the host control equipment, and controlling the stranded wire motor to operate according to the host operating frequency.
Under the condition that the stranded conductor control system has no fault, after power is supplied, an operator can click an operation button to operate the stranded conductor motor, the operation frequency of the main machine is adjusted by using the speed control knob according to process requirements, the stranded conductor motor stably operates according to the set operation frequency of the main machine, and the main machine control device can display state parameters such as bus voltage, operation frequency, output current or temperature on the liquid crystal display screen.
The operation of the stranded wire motor can be controlled by a one-key starting instruction, the stranded wire control system is in an operation state at the moment, and the stranded wire motor can also be independently controlled to operate through a host control interface of the liquid crystal display screen so as to control forward operation, reverse operation or inching operation.
If the stranded conductor control system breaks down, operating personnel can click the trouble and reset the button and issue the trouble and reset the instruction, can restart host control equipment after the trouble resets, if there is the trouble that can not rely on the trouble to reset to solve, then need artifical investigation to solve the problem, operating personnel accessible liquid crystal display looks over the detailed information of trouble this moment to quick location trouble is located, so that solve this trouble fast, the host control equipment can be operated after the trouble is solved.
The stranded wire motor can be a three-phase asynchronous motor, and has the advantages of simple structure, small volume, light weight, high efficiency and excellent smooth speed regulation performance; the three-phase asynchronous motor is controlled by using a constant voltage frequency ratio (VF) and the output voltage and the running frequency are controlled by setting the voltage and the frequency of an input power supply.
The running frequency of the host can influence the running frequency of the wire arranging motor, thereby influencing the size of the row spacing; wireless communication can be carried out between host computer controlgear and the winding displacement controlgear, liquid crystal display sends down the instruction to host computer controlgear after wireless communication establishes to accomplish, and host computer controlgear passes through wireless communication with data transfer to the winding displacement controlgear in, can judge according to wireless communication group number host computer controlgear and carry out communication connection with which winding displacement controlgear at present, does not influence each other between a plurality of wireless transceiver, and data timeliness is high, and transmission rate is high.
Step 304: the extraction control device determines whether the received input electronic gear ratio is the same as the current electronic gear ratio.
The drawing control equipment can receive the drawing operation frequency input by an operator and control the operation of the drawing motor according to the drawing operation frequency; the size of the electronic gear ratio influences the operating frequency of the extraction motor, so that the pitch size is influenced; if the received input electronic gear ratio is the same as the current electronic gear ratio, the pitch does not need to be adjusted currently, and the operating frequency of the drawing motor is not adjusted.
Step 305: and if the received input electronic gear ratio is different from the current electronic gear ratio, the leading control equipment calculates the rotating speed of the leading motor according to the input electronic gear ratio, generates a leading control instruction according to the rotating speed and controls the leading motor to operate so as to adjust the lay length.
The rotating speed is in direct proportion to the input electronic gear ratio, when the drawing control is carried out, an operator can send a key starting instruction to control the drawing motor to operate through the man-machine interaction equipment, and meanwhile, the stranded wire control system is in an operating state, or the drawing motor can be independently controlled to operate through the drawing control interface.
The leading and taking motor is simple to control, the constant speed operation is carried out after the ratio of the pitch to the electronic gear is determined, the pitch is guaranteed to be unchanged, the proportional relation exists between the operation speed of the leading and taking motor and the operation speed of the stranded wire motor, and operators can change the ratio of the electronic gear through a human-computer interaction interface according to process requirements to change the pitch.
The method comprises the following steps that a leading motor can be selected to work in a speed control mode or a position control mode according to process requirements, the rotating speed of the leading motor is obtained through calculation and estimation in the speed control mode, and the rotating speed precision of the leading motor is slightly lower than that of the position control mode; under the position control mode, draw and get the motor and be equipped with the encoder, calculate the speed of drawing the motor through the encoder, speed accuracy is high.
In a specific embodiment, the drawing control device obtains a current rotation speed (denoted as a first speed) of the stranding motor and a current rotation speed (denoted as a second speed) of the drawing motor; calculating the speed of the twisting bow according to the first speed and the transmission ratio; then, calculating the current twist pitch according to the twist bow speed, the diameter of the leading wheel, the second speed and the number of twist pitches generated by one turn of the twist bow; and then calculating the rotation speed (recorded as a third speed) of the corresponding leading motor according to the input electronic gear ratio, generating a leading control instruction according to the third speed, and controlling the leading motor to rotate at the third speed, thereby realizing the adjustment of the lay length.
Step 306: and the wire arrangement control equipment receives the host machine operating frequency sent by the host machine control equipment, and calculates the speed of the wire stranding motor according to the host machine operating frequency and the number of pole pairs of the motor.
The operation of the wire arranging motor can be controlled through a one-key starting instruction, the operation of the wire arranging motor can be independently controlled through a wire arranging control interface, and the wire arranging motor is controlled to rotate forwards, reversely, jog left or jog right and the like; specifically, when the flat cable motor operates with the flat cable control device for the first time, an operator issues a flat cable left jog command to calibrate a left stroke distance (a forward running distance of the flat cable motor) on a flat cable control interface of the liquid crystal display screen, confirms the number of pulses of the left stroke by issuing a left confirmation command, calibrates a right stroke distance (a reverse running distance of the flat cable motor) by issuing a flat cable right jog command, confirms the number of pulses of the right stroke by issuing a right confirmation command, can adjust the left stroke of the flat cable according to the flat cable left wide command/left narrow command after calibration is completed, and adjusts the right stroke of the flat cable according to the flat cable right wide command/right narrow command.
After the wire twisting motor operates, the speed n1 of the wire twisting motor can be calculated by adopting the following formula:
n1＝60f1/p1
wherein f1 is the operating frequency of the stranded wire motor, and p1 is the pole pair number of the motor.
Step 307: and the wire arrangement control equipment calculates the target frequency of the wire arrangement motor according to the speed and the row distance of the wire twisting motor and the corresponding stroke of one running circle of the wire arrangement motor.
Calculating the target frequency f2 of the traverse motor by adopting the following formula:
f2＝n1*nSpaceRoute/nLSRoute
wherein, nSpaceRoute is the row pitch, and nlroute is the travel (namely the lead screw lead) corresponding to the winding displacement motor running one circle.
Step 308: the winding displacement control equipment corrects the target frequency of the winding displacement motor according to the tooth pitch of the winding displacement motor to obtain the operating frequency of the winding displacement motor, and drives the winding displacement motor to operate at the operating frequency of the winding displacement motor.
Calculating the operating frequency f3 of the winding displacement motor by adopting the following formula:
f3＝f2*pitch/60；
wherein, pitch is the pitch of the winding displacement motor.
The operating frequency of the winding displacement motor and the operating frequency of the host machine are changed synchronously, and the winding displacement control equipment can calculate the operating frequency of the winding displacement motor according to the received operating frequency of the host machine, so that the control of equal winding displacement is realized, and the stability and the efficiency of the control are ensured.
In another embodiment, in the equal-row-pitch mode, if the stranded wire motor is provided with the encoder, the encoder wire bundle can be connected to the wire arranging control device, the wire arranging control device collects the pulse frequency of the stranded wire motor, the operating frequency of the wire arranging motor is calculated according to the pulse frequency of the stranded wire motor, and the calculation of the operating frequency of the wire arranging motor through the encoder is more accurate than the calculation of the operating frequency of the wire arranging motor through the host operating frequency sent by the host control device.
In other embodiments, the winding displacement control can also use an equal winding displacement speed control method, the running frequency of the winding displacement motor is irrelevant to the running frequency of the host, the running frequency of the winding displacement motor is fixed in the mode, and an operator sends the running frequency of the winding displacement motor through the human-computer interaction equipment.
The winding displacement control equipment can control the winding displacement motor to commutate according to the current position, the current running direction (forward or reverse) and the left calibration stroke/right calibration stroke, and calculate an automatic compensation amount to compensate after each commutation so as to prevent the accumulation problem; if the accumulation problem occurs, the parameters can be manually adjusted by an operator to compensate or solve the accumulation problem, and the parameters can be saved in the flat cable control device by using the parameter saving function after being adjusted to proper values.
The wire arranging control equipment has a meter counting function, and calculates the current meter number by using the pulse number of a current meter counting wheel and the linear speed of a wire arranging motor, wherein the pulse number of the meter counting wheel is the pulse number corresponding to one turn of the meter counting wheel; the wire arranging control equipment judges whether the current meter number reaches a preset length or not; if the current meter reaches the preset length, sending a shutdown instruction to the wire arranging motor to control the wire arranging motor to be shut down; if the current meter does not reach the preset length, controlling the wire arranging motor to continue to operate; in addition, the winding displacement control equipment clears the current meter number after receiving a counting reset instruction issued by an operator through the man-machine interaction equipment.
Step 309: and the winding control equipment samples the tension signal to obtain a feedback tension value.
The winding control can be controlled by a one-key starting instruction, or the winding motor can be independently controlled to operate through a winding control interface; the winding motor is stably controlled, and the winding motor can uniformly wind in the reciprocating motion process of the screw rod, so that the effect is good; the winding control stability can be reflected by controlling tension, the tension control quality influences torque output, an operator sets a tension value through the human-computer interaction device, the winding control device collects an actual tension value, and closed-loop control is performed to achieve stable control.
The tension stability influences the speed or torque stability of the winding motor, if the tension is stable, a constant value is kept to be output, and if the tension is unstable, an output tension value is adjusted in time; the winding diameter is changed in real time in the winding process, the change of the winding diameter can affect the linear speed, the change of the linear speed leads to the change of tension, and the winding control equipment controls the winding motor according to the change value after the tension changes.
The winding motor can select a speed control mode or a torque control mode in the control mode, and the running speed of the winding motor is adjusted in real time in the speed control mode; and under the torque control mode, adjusting the output torque of the winding motor in real time.
Step 310: and the winding control equipment calculates the tension deviation between the preset tension value and the feedback tension value, performs proportional integral derivative operation according to the tension deviation and outputs a constant tension value.
The winding control device can multiply the tension deviation by a preset proportional coefficient to calculate a proportional adjustment value; dividing the product of the preset proportionality coefficient and the tension deviation by the integral time to obtain an integral adjusting value; multiplying a preset proportional coefficient by the differential time to obtain a differential adjustment value; and then superposing the proportional adjustment value, the integral adjustment value and the differential adjustment value, and carrying out amplitude limiting treatment on the superposition result so as to output a constant tension value.
The embodiment realizes the whole process work of stranding by centralized control, realizes comprehensive automatic control among stranding, leading, arranging and winding, is convenient to install, easy to operate, small in size, light in weight and simple in structure; the integrated control effect is good, the requirements of different working conditions can be met, and the stability is strong; the cost is low, and the cost of a stranded wire control system can be greatly reduced; the applicability and the flexibility are strong; because the drawing wheel does not need to be replaced manually and the direction is not changed manually, the machine does not need to be stopped, and the service life is longer than that of the traditional stranding machine; the parameters can be adjusted according to requirements in the operation process of the stranding control system, the real-time performance is high, and meanwhile the working efficiency of the stranding machine can be improved.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules or units is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.
Claims (10)
1. The control method of the stranding machine is characterized by being applied to a stranding control system, the stranding control system comprises a control device, a stranding motor, a leading motor, a winding displacement motor and a winding motor, the control device comprises a host control device, a leading control device, a winding displacement control device and a winding control device, and the method comprises the following steps:
receiving a host operating frequency through the host control equipment, and controlling the strand motor to operate according to the host operating frequency, wherein the host operating frequency is the operating frequency of the strand motor;
receiving an input electronic gear ratio through the drawing control equipment, and controlling the drawing motor to operate according to the input electronic gear ratio;
calculating the operating frequency of the wire arranging motor according to the operating frequency of the host by the wire arranging control equipment, and controlling the wire arranging motor to operate according to the operating frequency of the wire arranging motor;
and receiving a preset tension value through the winding control equipment, and carrying out closed-loop regulation according to the preset tension value and the collected tension signal so as to enable the rotating speed or the torque of the winding motor to be within a preset range.
2. The method of claim 1, wherein the strand control system further comprises a human-computer interaction device, and the step of receiving the host operating frequency by the host control device is preceded by the step of:
after receiving a downloading instruction, the human-computer interaction equipment sends the client parameters stored in the human-computer interaction equipment to the control device;
the downloading instruction is used for indicating whether the customer parameters are downloaded, and the customer parameters comprise motor parameters or functional parameters.
3. The method of claim 2, wherein the step of receiving a host operating frequency by the host control device is preceded by the step of:
after receiving a parameter storage instruction sent by the human-computer interaction equipment, the control device stores the received client parameters;
and after receiving a copy instruction sent by the human-computer interaction equipment, the control device sends the stored customer parameters to the human-computer interaction equipment, so that the human-computer interaction equipment stores the customer parameters in a data storage area.
4. The method of controlling a wire twisting machine according to claim 2, characterized in that the method further comprises:
when the power-on completion flag is valid, the control device judges whether the input power supply voltage is less than a preset voltage threshold value;
if yes, automatically saving the received client parameters.
5. The method for controlling a wire twisting machine according to claim 2, wherein the step of sending the client parameters stored in the human-computer interaction device to the control device after the human-computer interaction device receives the downloading instruction comprises:
the human-computer interaction equipment judges whether the communication with the host control equipment is disconnected;
if so, receiving the reconfigured communication parameters to enable the communication parameters of the human-computer interaction equipment to be the same as the communication parameters of the host control equipment;
wherein the communication parameter comprises a bit rate or a communication address.
6. The method of claim 1, wherein said step of receiving an input electronic gear ratio by said take-off control device and controlling operation of said take-off motor in accordance with said input electronic gear ratio comprises:
determining whether the received input electronic gear ratio is the same as a current electronic gear ratio;
if not, calculating the rotation speed of the drawing motor according to the input electronic gear ratio;
generating the drawing control instruction according to the rotating speed, and controlling the drawing motor to operate so as to adjust the lay length;
wherein the rotational speed is directly proportional to the input electronic gear ratio.
7. The method of claim 1, wherein the step of calculating the operating frequency of the traverse motor according to the operating frequency of the main machine and controlling the operation of the traverse motor according to the operating frequency of the traverse motor by the traverse control device comprises:
the flat cable control equipment receives the host operating frequency sent by the host control equipment;
the wire arrangement control equipment calculates the speed of the wire stranding motor according to the running frequency of the host and the pole pair number of the motor;
the wire arranging control equipment calculates the target frequency of the wire arranging motor according to the speed and the row distance of the wire twisting motor and the corresponding travel of the wire arranging motor in one circle;
the winding displacement control equipment corrects the target frequency of the winding displacement motor according to the tooth pitch of the winding displacement motor to obtain the operating frequency of the winding displacement motor, and drives the winding displacement motor to operate at the operating frequency of the winding displacement motor.
8. The method of claim 1, wherein the step of calculating the operating frequency of the traverse motor according to the operating frequency of the main machine by the traverse control device and controlling the operation of the traverse motor according to the operating frequency of the traverse motor is followed by the step of:
the wire arranging control equipment calculates the current meter number by using the pulse number of a current meter wheel and the linear speed of the wire arranging motor, wherein the pulse number of the meter wheel is the pulse number corresponding to one turn of the meter wheel;
the winding displacement control equipment judges whether the current meter number reaches a preset length or not;
if yes, sending a stop instruction to the wire arranging motor to control the wire twisting control system to stop; if not, controlling the flat cable motor to continue to operate;
and the wire arrangement control is arranged for clearing the current meter after receiving a counting reset instruction.
9. The method for controlling a wire twisting machine according to claim 1, wherein the step of receiving a preset tension value through the winding control device, and performing closed-loop adjustment according to the preset tension value and the collected tension signal to enable the rotation speed or torque of the winding motor to be within a preset range comprises:
sampling the tension signal to obtain a feedback tension value;
calculating the tension deviation between the preset tension value and the feedback tension value;
and performing proportional integral derivative operation according to the tension deviation, and outputting a constant tension value.
10. A stranded wire control system is characterized by comprising a control device, a stranded wire motor, a drawing motor, a flat cable motor and a winding motor, wherein the stranded wire motor, the drawing motor, the flat cable motor and the winding motor are connected with the control device;
the main machine control equipment is used for receiving a main machine operation frequency and controlling the strand motor to operate according to the main machine operation frequency, wherein the main machine operation frequency is the operation frequency of the strand motor; the drawing control equipment is used for receiving an input electronic gear ratio and controlling the drawing motor to operate according to the input electronic gear ratio; the winding displacement control equipment is used for calculating the operating frequency of the winding displacement motor according to the operating frequency of the host and controlling the winding displacement motor to operate according to the operating frequency of the winding displacement motor; the winding control equipment is used for receiving a preset tension value and carrying out closed-loop adjustment according to the preset tension value and the collected tension signal, so that the rotating speed or the torque of the winding motor is within a preset range.
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