Bei Jialai motion controls a technology to spread the application in abb warp knitting machine in much axial

, ltd.

, shanghai 210023)Abstract: This Paper Introduces The B&R ' S Servo Control Technology And The Multiaxial Warp Knitting Machine With Weft Thread Insertion, with The Specific Analysis Of The Control Difficulties For The Complete Machine, i.

E.

The Composition And Working Principle Of The Electronic Yarn Let-off System As Well As The Summary Of The Technology And The Movement Track For The Weft Thread Insertion System.

Keywords: Servo of foreword of Motion Control; Multiaxial Warp Knitting Machine; Electronic Yarn Let-off; Weft Thread Insertion System; Movement Track1 is to be used accurate ground follows or the feedback of a certain process controls reproduction system, say to follow again use a system. Below a lot of circumstances, servo points to only controlled quantity (systematic sendout) the feedback that is mechanical displacement or floating rate, acceleration controls a system, its action is the mechanical displacement that makes output (or corner) dog well and truly the displacement of the input (or corner) . Shellfish adds the function that because its are advantageous,Lai servo controls a system, already was applied at spin widely, pack, robot, plastic, wind energy, presswork, control the industry such as gold, semiconductor. Graph driver of Bei Jialai servo uses system of 1 control of Bei Jialai servo modular design, support Powerlink of agreement of net of high speed aether, communication total cycle time only 400us, control circulates only 50us, agree with the control circumstance of high speed, high accuracy. Besides simple athletic control, still have function of powerful much axle control, include cam of electronic gear, electron, aleatoric curve to follow amiable CNC. Main shaft signal is desirable wait from value of computation of model of coder, certain sensor, maths. Have the support of Automation Studio of powerful compositive software platform. Process designing of this platform collect, debug and check at an organic whole, support process designing of text of echelon graph, structuralization, Basic and C language; Supportive debugging on-line and emulate debug; Support online data to collect an analysis (oscillograph function) . In machining process, the servo controller of high level is having to precision, quality and dynamic function cause the effect with close main, this means the setting that controls concept and controller to will have conclusive effect. Cascade controller (or say to string together class controller) the technical marrow that the concept is system of drive of Bei Jialai servo, positional closed-loop control implement, speed closed-loop control implement, voltaic closed-loop control implement be cascade, according to set the value works. Accordingly, in cascade controller system, taller the output variable of one class controller was become inferior the set of one class controller is worth (for example, positional closed-loop control implement the set rate of output decided speed closed-loop control implement set is worth) . Graph equipment of warp knitting of abb of shop of 2 much axial summarizes structure of 2 cascade controller a warp knitting industry is knitting industry main component, because its fabric has distinctive function and production efficient and get rapid development. As contemporary the development that controls a technology oneself, especially the breakthrough of servo control technology, more and more accuse to produced machinery to abandon oneself mechanical cam, used change a design without the axis, improved manufacturing efficiency greatly. The design of contemporary electron warp knitting machine also complied with this one tendency of the day. Much axial spreads abb warp knitting machine to regard warp knitting machine as medium high-end type, its are compound fabric can be used at the industry such as report of industry of aerospace, arms, shipbuilding, car, building, wind, perspective is very wide. Structure of machinery of warp knitting machine of abb of much axial shop is complex, control difficulty is tall. A price needs foreign facility RMB 10 million yuan of above, and as a result of its fabric can be used at a variety of sensitive industries, abroad accuses to canal of this equipment exit strict. If the graph is shown 3 times, much axial warp knitting machine closes by the electron roll (EFA) , the electron is pulled pull (EWA) , the electron sends classics (EBC) , a few major composition such as the system that spread abb. This plant layout the servo of 14 axes controls a system, include the axis of main shaft, chain, axis that hold cloth in the palm, system that spread abb (every have two axes of X, Y to comprise, in all 3 6 servo axes) , send classics (3 axes) , pull pull a rod, receive reel. Athletic control technology used electronic gear, electron to follow, CNC. If the control system of warp knitting machine of abb of shop of this many axial pursues 4 are shown. Main introduction electron sends classics and the control of the system that spread abb the principle below. Graph equipment of warp knitting machine of abb of shop of 3 much axial forms Nextpage to pursue sketch map of system of control of warp knitting machine of abb of shop of 4 much axial 2.

1 electron sends classics system electron to send classics orgnaization to regard warp knitting machine of contemporary high speed as one of substantial, have an operation convenient, precision tall, reappearance good, noise low, machine fast wait for an advantage quickly. The orgnaization becoming a group that the electron sends classics need to cooperate main shaft sends a volume needing gauze steadily, finish good to laid weft to undertake sew. As a result of dish head unreel causes a diameter to be reduced ceaselessly, to make sure linear velocity sending gauze is changeless, need the angular velocity with reliably current computation, and should be in the process that high speed sends gauze, real time change controls parameter, can cause collapse gauze otherwise. This answered time to raise taller requirement with respect to what control a system to motion. What shellfish adds Lai is use to follow from the axis here technology. Graph 5 electrons send classics control the system if the graph is shown 5 times,form, the electron sends classics system to basically include the following segment: ① measures long Luo La; ② servo driver; ③ servo electric machinery; ④ , ⑤ gearing. Pass pair of analysises that send classics principle, the independent variable that discovers the system controls algorithm is not time, however external diameter of winding of warp beam yarn, also namely outside the change of circumference. Uses algorithm is based on the following principle: The length circling gauze that the warp length that below fixed main shaft rate need uses up and corresponding warp beam send classics speed to fall is equal. Yarn of hypothesis of indirect computation law chases a layer equably to twine go up in warp beam, and current gauze circles warp beam outside sexual relationship of circumference and thread of number of pen of warp beam unreel. Reach by the analysis: When sky of Cmax of the circumference outside using the gauze when the warp beam of the input when the machine on new warp beam coils completely to circle, warp beam is circled outside the gauze when circumference Cmin, warp beam coils completely circles total circle the parameter such as several W and the unreel total circle of the warp beam inside each cycle count Zi, can realize set of current to warp beam electric machinery rotate speed to be worth the computation of Nbmi according to fair formula, and value criterion of among them Cmax and W can be obtained from inside warping craft directly. 2.

System of 2 shops abb 2.

2.

The core system that system of abb of shop of brief introduction of craft of 1 shop abb is warp knitting machine of abb of much axial shop, also be overall control difficulty place. Designing a requirement is abb of every groups of shops implement different point of view is finished dynamicly on the course that should running respectively (abb of 3 groups of shops implement can set the point of view that goes to 90 degrees 45 degrees from ± respectively) weft laid, if pursue,6 are shown. The weft that has spread is carried finish sew to nose. Here used technology of CNC numerical control. Graph sketch map of warp knitting of & of abb of shop of 6 much axial 2.

2.

Overview of contrail of motion of 2 shops abb finishs the movement that spread abb to call a shop abb cycle, be in left, right the time that the shop abb of 2 slideway uses is same, but the contrail that spread abb is different, because these 2 spread abb cycle,call circulation of abb of a shop. In a cycle that spread abb, have the mechanical movement of different way, also have stop wait for hour, it is OK that what they need time reasonable allocation clock pulse number comes magnanimity, if press the action that gauze board raises, if distributive clock pulse became little, that did not press gauze board to had been not raised, the car moved, press gauze so hook of weft of board meeting batter; If distributive clock pulse is too much, the clock number that extends abb cycle because of is fixed, time of other action distributive is little, affect other action, because this must allocate as a whole. The clock pulse number of a cycle that spread abb follows the density, width that spread abb and change, be like limit conditions T=2865.

12 pulse / periodic; Groovy condition T=8595.

36 pulse / periodic. Simplify to make control a model, issue as far as possible reasonable allocation in limit conditions commonly the clock pulse number of each movement, it is normal to make its can basic the job, become its convert per cent, extend the clock pulse number of abb cycle to differring, will undertake allocation by this scale. 3 last words after this equipment put into production, examine via practice, index of each respect technology all achieved design requirement, passed appraisal of achievement of ministry class science and technology. Concerned attestation conclusion is: The development of this warp knitting machine is successful, fill the blank of warp knitting machine of much axial of fabric width of domestic high speed, overall function achieves international advanced level. This achievement obtains science and technology of association of Chinese textile industry to progress first prize of progress of science and technology of city of award of third class of progress of science and technology of province of second-class award, Jiangsu, Changzhou. CNC Milling CNC Machining