CN201298168Y

CN201298168Y - Jigger control system based on the POTopen protocol

Info

Publication number: CN201298168Y
Application number: CNU2008201082259U
Authority: CN
Inventors: 谢维
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-02
Filing date: 2008-06-02
Publication date: 2009-08-26
Anticipated expiration: 2018-06-02

Abstract

The utility model provides a jigger control system based on the POTopen protocol, which applies the CAN field bus technology to the inspection and control of dyeing and finishing equipment. The jigger control system comprises a touch screen arranged at the monitoring center, a programmable controller, a CANopen communication module, a CANopen junction box of the inverter in a jigger, an AC inverter 1 and an AC inverter 2. The programmable controller performs such tasks as the field bus master station, logic control, dye solution temperature control and the like in the system; the touch screen performs such tasks as the process parameter setting, running status monitoring, fault information processing and the like; the two inverters complete such tasks as the winding, unwinding, tension control and the like; the CAN field bus is used for forming the network of decentralized control and centralized management; and the CANopen protocol is used for realizing the high-speed transmission of measured values and control signals. The utility model has the advantages of good real-time performance, high anti-interference capacity, high control precision, simple operation, small maintenance workload, and benefits for the networked production management and mass production and the like.

Description

Dye jigger control system based on the CANopen agreement

Technical field

The utility model relates to the CAN field bus technique and is applied to the equipment for dyeing and finishing Detection ﹠ Controling, particularly a kind of dye jigger control system based on the CANopen agreement.

Background technology

Present stage has been equipped with more ECU (Electrical Control Unit) on the dye jigger, machine performance and security are all improved significantly.If but the design that also makes simultaneously the dye jigger control system faces new challenge-still adopt traditional point to point wiring mode, certainly will cause the system architecture complexity, brings difficulty to manufacturing cost reduction, diagnosis and maintenance.

Traditional dye jigger control system has the following disadvantages: 1. system can't enhance productivity and quality, can't satisfy the new technology requirement; 2. system cost height, complicated operation must could be with system debug to desirable technical indicator by veteran engineering technical personnel; 3. dye jigger field control function is too concentrated, and communication efficiency is low, and extendability is poor; 4. system wiring is many and mix, and anti-interference is poor, reliability decrease, and bring material, installation and maintenance cost.

Traditional control system is to be based upon on the basis of I/O information.Along with the appearance of Fieldbus Based control system, adopt open bus to connect various device, as long as draw two or data line seldom, just various device can be coupled together and realize disposing flexibly, monitor, controlling and operate.The disclosed communication protocol of fieldbus can make product interconnection, the interoperability of different manufacturers, realizes the interchangeability of different product, has made things convenient for system configuration and maintenance.Anti-interference improves, and is safe and reliable, the investment of effectively reduction system.

Summary of the invention

The purpose of this utility model provides a kind of fieldbus monitoring control system that is used for dye jigger, and it is at the characteristics of CANopen protocol bus, and the technical scheme that is adopted is:

A kind of dye jigger control system based on the CANopen agreement, comprise that CAN fieldbus, Surveillance center and dye jigger constitute, it is characterized in that touch-screen is arranged in the Surveillance center, Programmable Logic Controller, CANopen communication module, touch-screen is connected with the communication port of Programmable Logic Controller, and the Programmable Logic Controller expansion has connected the CANopen communication module; Frequency converter CANopen junction box, AC converter 1, AC converter 2 are arranged on the dye jigger, and a line cap of CANopen junction box is connected with

frequency converter

1,2 respectively.

Dye jigger control system of the present utility model, the communication port of its described Programmable Logic Controller are the Modbus bus communication interface.

Dye jigger control system of the present utility model, its described

AC converter

1,2 adopts the let off roll control structure of encircling in the tension force with the speed outer shroud.

Programmable Logic Controller is taken on fieldbus main website, logic control, dye liquor temperature control task; The setting of touch-screen implementation procedure technological parameter, running state monitoring, failure message Processing tasks; 2 frequency converters are finished rolling, are unreeled and the Tension Control task; By the network of formation decentralised control of CAN fieldbus and centralized management, adopt the CANopen agreement to realize measured value and control signal high-speed transfer.

The utility model is compared with prior art, have that real-time is good, antijamming capability is strong, control accuracy is high, easy and simple to handle, maintenance workload is little, help the characteristics of networked production management and mass production; By absorbing domestic and international advanced technology, can be used for fabrics such as open width silk, brocade cotton, cotton, tenacity rayon silk fabric activity, sulfuration, reduction stain and destarch, kiering, bleach, soap, wash processing, can also be used for correcting the aberration that causes on the continuous dyeing production line; Have the following advantages in addition:

1. the batching diameter is big, can satisfy many kinds, short run, fast delivery; Middle fabric in batches can process at one time, and the processing effect unanimity has good technology reappearance.

2. it is moving to adopt the double cross rheology to keep pouring in, and starting, parking, running and all kinds of non-productive operation are steadily reliable.

3. the linear velocity step-less adjustment is set the back and keep constant in the whole service process.

4. small tension receiving coil is regulated and is particularly suitable for frivolous tender and lovely fabrics such as silk, bright and beautiful cotton.

5. reduce water, electricity, steam and dyestuff consumption, reduce and pollute, shorten the equipment investment term of redemption.

6. improve technology automatic control level, artificial or unknown losses are avoided in science setup parameter energy guaranteed quality and security, further reduce production costs.

Thereby, the utlity model has the excellent popularization using value.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is based on the circuit connection diagram of the dye jigger control system of CANopen agreement.

Fig. 2 is the structural plan of this dye jigger control system.

Fig. 3 is the control loop block diagram of this dye jigger control system.

Fig. 4 is the CANopen communication program schematic diagram of this dye jigger control system.

Embodiment

At first, the CANopen agreement that is adopted is briefly introduced.CANopen is the application layer communication standard by the distributed automatic system of CiA formulation.Each data of CANopen protocol transmission all are the objects of a certain certain kinds, and CANopen has defined 4 class communication objects: 1. network management NMT, be used for the network host node to from monitoring nodes and management, and control is from the duty of node; 2. process data object PDO is used for the real time data that transmission network is operated, the control variable of transmission system; 3. Service Data Object SDO is used for transmission node parameter and structure dependent configuration data, finishes parameter configuration, the configuration of system, the form of assignment procedure data PDO; 4. specific function object SFO is used for synchronous, as to meet an urgent need indication and time mark special object, cooperates three kinds of above-mentioned communications.

Below with reference to Figure of description, describe in detail a preferable embodiment of the present utility model.Circuit connection diagram such as Fig. 1 adopt Schneider Twido Programmable Logic Controller, and 2 number of turns detecting devices (2), the usefulness that tests the speed photoelectric encoder (12) signal insert high-speed counter.Tension pick-up (5), temperature sensor (10) signal insert the analog quantity load module.Expanded 1 CANopen communication module simultaneously.

Frequency converter

1,2 adopts Schneider ATV31 frequency converter, carries the CANopen communication port, and has stronger overload capacity.

Adopt Schneider XBTG touch-screen, have the picture and text Presentation Function, can show artwork, procedure parameter, setting tension value, system running state, failure message.Also can finish various system operations, reduce various instrument and control knob, the quantity of pilot lamp and the area of guidance panel on the guidance panel.

Structural plan such as Fig. 2 mainly comprise cloth beam (1), number of turns detecting device (2), cloth beam (3), speed reduction unit (4), tension pick-up (5), jockey pulley (6), fabric (7), motor 1 (8), motor 2 (9), temperature sensor (10), fabric guide roll (11), photoelectric encoder (12), staining bath (13).

The utility model has into cloth, dyeing, washes and goes out operating modes such as cloth, when advancing cloth, fabric (7) is wound on the cloth beam (1) from the turnover cloth holder, and it is long to count the coiling number of turns and cloth simultaneously.During dyeing, advanced dyestuff, heat, start frequency converter then, make (3) one of cloth beam (1) and cloth beams be in the rolling state, another is in the state of unreeling.Arrow shows the traffic direction of cloth among Fig. 2, and motor 2 (9) is a winding motor during solid line direction, and motor 1 (8) is to unreel motor, counts the coiling number of turns, long, the dyeing road number of cloth simultaneously.After the wind-up roll number of turns reaches setting value, stop this direction operation, change the traffic direction of cloth automatically, at this moment motor 1 (8) becomes winding motor, and motor 2 (9) is to unreel motor.When dyeing road number reaches when setting the road and counting, entering the swing operation automatically is that low speed back and forth moves.Can stop as pressing stop button this moment, and automatic drain.During washing, intake earlier, heat, spray, start frequency converter then, the method for operation is analogous to dyeing.When going out cloth, make cloth beam (3) rolling by the frequency converter drive motor, cloth beam (1) unreels.When going out the cloth end, remove parameters such as the number of turns, cloth length, road number.

Control strategy of the present utility model is as follows: Alternating Current Governor System has advantages such as energy-saving and cost-reducing, that minimizing is keeped in repair, price is low, adopts two frequency conversion closed-loop controls, and permanent tension force constant linear velocity online feedback control controls to minimum to speed and tension fluctuation.Because of the internal control current interference to producing phenomenons such as driving, brake be out of control, be the problem that general frequency conversion dye jigger often occurs, stable control program of the present utility model has solved during dyeing was produced in the past problems such as insurmountable driving, has improved product quality.Control function is finished by programmable controller program; The control of wind-up roll is constant linear velocity PID regulator; Let off roll adopts tandem control, and interior ring is a tension link, and outer shroud is a speed ring, control loop block diagram such as Fig. 3.

The control of tension force realizes that by the adjusting of speed linear velocity signal V comes from the photoelectric encoder (12) of fabric guide roll (11), has reflected the actual linear velocity of cloth operation.The coil diameter computing unit is finished the coil diameter calculation task.Δ V is tension adjustment output, as the linear velocity correction.ω ₁Be the angular speed calculation value, guaranteed that motor regulates rotating speed and add the tension adjustment influence value by the coil diameter that calculates.ω is final actual output angle speed, feeds back to the coil diameter computing unit and participates in coil diameter calculating.For the computing of Δ V part, adopted the PI algorithm.Because motor side is unkitted speed measuring device, motor speed ω reads current rotating speed output by the CANopen communication from the frequency converter side.

During concrete enforcement, should carry out Design of System Software.Programmable controller program is mainly by forming with lower module:

1. master routine.Finish the organization task of The whole control program.

2.CANopen communication subroutine.Finish reception or transmission between Programmable Logic Controller main website and each slave station, data are changed according to the CANopen agreement.

3. logic control subroutine.The logical relation of mainly finishing in the whole process flow is handled.

4. temperature control subprogram.The control of staining bath temperature adopts the digital PID function of Programmable Logic Controller to form temperature regulator.

5. fault handling subroutine.Be used to handle various failure messages, be used for warning, parking etc.

Dye jigger does not store up snubber assemblys such as cloth, tension bracket in operational process, the subtle change of speed just may cause the great changes of tension force, so the real-time of control system is had relatively high expectations, if any delay, very easily causes system oscillation in communication process.Adopt the CANopen communication modes, the status word of frequency converter, command word, velocity setting value, actual speed value of feedback etc. are configured to the PDO mode, in real time the operation values in the Programmable Logic Controller is transferred in the frequency converter, thereby change the running speed of motor rapidly.

As Fig. 4, CANopen communication subroutine program: at first take out status word, judge then; If order is finished initialized process step, then make the CANopen communication transfer to " initially " state from " application program resets "; If judge that status word is that fault resets, then make the CANopen communication transfer to " application program resets " state from " stopping "; If judge to receive peripheral operation, then send corresponding command word, make the CANopen communication transfer to " operation " state from " pre-operation ", carry out control corresponding.

Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.

Claims

1. dye jigger control system based on the CANopen agreement, comprise that CAN fieldbus, Surveillance center and dye jigger constitute, it is characterized in that: touch-screen, Programmable Logic Controller, CANopen communication module are arranged in the Surveillance center, touch-screen is connected with the communication port of Programmable Logic Controller, and the Programmable Logic Controller expansion has connected the CANopen communication module; Frequency converter CANopen junction box, AC converter 1, AC converter 2 are arranged on the dye jigger, and a line cap of CANopen junction box is connected with frequency converter 1,2 respectively.

2. dye jigger control system according to claim 1 is characterized in that: the communication port of described Programmable Logic Controller is the Modbus bus communication interface.

3. dye jigger control system according to claim 1 is characterized in that: described AC converter 1,2, adopt the let off roll control structure of encircling in the tension force with the speed outer shroud.