Electric pilot intelligence digitlizes weightlessness type feeder solution

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  • source:COCKRIEL CNC Machining
Weightlessness feeder system has metric definition tall, efficiency is tall, wait for an advantage technological process is short and simply. But the limitation that applies as a result of the technology of traditional automation system of feeder, still face pilot stability, dependability in applying actually, the inadequacy of the respect such as the recipe craft flexibility of maintenance and product line spot, apply new intelligence to digitlize a solution to be able to solve these problems. Weightlessness type feeds technology of number of network of makings control system to apply industrial product to create unit of unifinication of product line Electromechanical between, and the technical requirement of built-in control of Electromechanical unifinication unit is more and more complex, more and more accurate; This kind of demand forces modern industry to control a system to need to much data is transmitted and be handled, want to have extremely tall real time sex at the same time; Traditional industrial PLC more and more ability not equal to one's ambition. Below this kind of trend, network technology is applied in traditional industrial automation domain gradually, the industrial network that carries the main current on the market for example Profibus, modbus, canopen, devicenet, the network technology such as Ethernet, will solve traditional industry to control the problem that the system exists. At present the weightlessness of the mainstream on the market feeds makings system to put in form of two kinds of technologies: generation is traditional without network PLC or low end IO small processing comprises industrial controller; The 2nd generation is technology of control of local and simple and easy network; The 3rd generation is technology of control of entire network number, it is the trend of prospective development; From the graph 1 can see, generation controls a construction, it is many feeder common a control is unit, data exchanges the control unit in this locality to undertake between every feeder, the data information with the unit control that operates personnel and this locality through implementation of controller of a man-machine is exchanged. Graph type of weightlessness of 1 generation feeds plan of network of makings control system to control configuration to be able to see from this have the following drawback: · patulous limitation: Local control implement unit work load is heavy, can not satisfy the requirement of raw material recipe with product line more complex raw material indefinitely, 2-4 raw material can be handled constrainedly, but cannot realize control 5 above even 10 above raw material. · flexibility is poor, in process of user spot production, cannot demolish mobile feeder quickly the switch between diverse product line. Unit of local control of feeder of · spot weightlessness cannot install combination freely. · interference rejection sex is poor, because many feeder system shares unit of a local control, from local control accordingly unit IO port arrives the controls terminal route of each feeder is inevitable very long, to a few need nicety is collected or data of pilot imitate volume is disturbed easily, cannot come true to be mixed accurately stable control. From the graph 2 can see, the 2nd generation controls model construction, compare with generation photograph, had certain progress, each feeder has an independent control unit, the data switch between every feeder is to pass central control unit and system of product line management to realize communication data switch, as a result of technical limitation, can realize the communication of only network only, for example onefold Profibus, modbus, the communication network of the mainstream such as Canopen. Graph type of 2 the 2nd acting weightlessness feeds plan of network of makings control system. Nextpage from the graph 3 can see, the 3rd generation controls model construction, cent controls a network for 3, very clear; In layer of the first control, every feeder has unit of many independent local control to comprise, every this locality controlled the data switch between unit to realize network independently, in layer of the 2nd control, substantive work can be already between every feeder, each other noninterference, can realize man-machine data switch through the network again, in the 3rd in, whole feeder system can control a system to realize data switch with the management of product line. Can manage systematic synchronism with factory data, undertake through the network long-range breakdown is diagnosed even wait for a function; Advantage of the 3rd acting technology depends on implementing technology of sophisticated network news report, undertake with different network system data is exchanged at the same time, have very strong network compatible ability. Graph type of 3 the 3rd acting weightlessness feeds type of weightlessness of this locality of feeder of type of weightlessness of plan of network of makings control system to control unit intelligence to change itself of individual weightlessness type feeder is real time feedback of multichannel closed circuit controls a system, unit of control of type of weightlessness of this locality core wants not only real time read the rotate speed signal that takes weight signal, metric screw, compound signal, execute many operation mission even, the rate that implements metric screw controls the control job of the component such as unit and filling makings a powerful person. Type of weightlessness of this locality of weightlessness type feeder controlled unit to also experience the development of 3 acting technologies in the market, generation is logistic controller of average 16 standards PLC; 32 microprocessor of the 2nd acting low end control unit for the weightlessness type of core; 32 the 3rd generation is advanced small processing control unit for the weightlessness type of core. Type of generation weightlessness feeds makings control unit, because use logistic controller of simple 16 standards PLC, it is system of control of odd loop mission commonly, increase as the task, job total cycle time exceeds 30ms above commonly, even 100ms, in control technical respect gets great limitation, no matter be the real time sex in the task, the accuracy that still is the task the respect is special how terrible, in moving because of this is mirrorred specificly in weightlessness feeder, in IO signal real time handles ability side special weakness, for example weight signal and wave motion of metric screw rotate speed are not stabilized or the phenomenon of fall asleep, control behavioral lag, the feature such as difference of real time sex; Feel control precision still is inferior to bulk type feeder even. Although use controller of 32 of low end small processing,type of the 2nd acting weightlessness feeds makings control unit, in control technical technology respect gets definite improvement, no matter be the real time sex in the task, the respect gets the accuracy that still is the task promotion, in moving because of this is mirrorred specificly in weightlessness feeder, in IO signal complex, below the working state of much task, real time handles ability respect to get remarkable promotion, for example generation is mixed in the processing capability of weight signal accuracy of metric screw rotate speed can, control behavioral lag, the problem of the feature such as difference of real time sex is able to solve, but undertaking with system of product line management network data switch still is put in big limitation, cannot transmit plurality to seize a quantity in real time, and cannot suit and compatible all sorts of communication agreement network. In the 3rd generation weightlessness type feeds makings control unit, use controller of 32 newest small processing, commanding technical respect is a qualitative leap, no matter be the real time sex in the task, the respect gets the accuracy that still is the task rise significantly, in moving because of this is mirrorred specificly in weightlessness feeder, not only the feedback system of weightlessness type feeder, its control the accuracy of executive unit and real time sex, won't be affected in complex factory environment. For example weight signal and control of metric screw rotate speed and feedback are opposite at before generation product is more accurate, more reliable; Can carry out task of more complex data news report at the same time, the industrial network of compatible much, for example Rofibus, modbus, canopen, ethercat, ethernet. Tall nicety of unit of signal of weight of weightlessness type feeder turns unit of signal of weight of weightlessness type feeder is one of main core unit, its function is the weight signal weight sensor signal of word of changeover amount to, upload weightlessness type to control unit; This core job that controls unit is how to obtain high resolution and signal of weight of real time sex, and interference rejection capability is strong. Unit of signal of weight of weightlessness type feeder experienced the development of 2 acting technologies in the market, generation is 8 or 16 sheet piece the weight signal of controller of logistic small processing handles unit; The 2nd generation, controller of 32 advanced small processing handles unit for the weight signal of core. Signal of weight of feeder of type of generation weightlessness is unit, because use 8 or 16 standards are single a small processing controller, it is system of control of odd loop mission commonly, increase as the task, job total cycle time exceeds 30ms above commonly, cannot realize high speed function of operation of real time sampling, high speed, because this is in,respect of weight signal resolution is not constant error, can come true only extremely one of precision, and cannot have operation of wave of complex number filter, ability of respect of interference rejection, dependability is poor, at the same time with go up position control implement the force of real time function of communication is poor, the control system that basically cannot satisfy high accuracy asks. Signal of weight of feeder of type of the 2nd acting weightlessness is unit, use controller of 32 advanced small processing, in control technical respect gets definite improvement, no matter be the real time sex in the task, the respect gets the accuracy that still is the task promotion, because this is in side of weight signal resolution is very good, can realize the precision of 1/1000000, and can have operation of wave of complex number filter, capability of respect of interference rejection, dependability is strong; Have at the same time stronger with on position control implement ability of real time communication, satisfy the control system requirement of high accuracy. Unit of control of speed of motor of feeder of type of weightlessness of digitlization of height of pilot of motor drive unit also is mixed weight signal unit is same, it is one of control unit of important core. The common speed controller on the market has two kinds, shed driver and communication transducer continuously, dc driver offers speed control and speed feedback normally two kinds of functions, communication transducer offers speed control only normally, and without speed feedback function, if need feedback function, need configures speed feedback sensor, be like speed coder; This core job that controls unit is how to obtain high resolution and signal of weight of real time sex, and interference rejection capability is strong. Motor speed control is unit and current in the market the mainstream still stays in port of traditional technique IO, go up the digital amount that carries a tradition controls a machine controller system and signal of imitate capacity control controls motor speed unit, implementation motor stops, function of speed closed-loop control, although dependability does not have a problem, but go up in real time sex and accuracy or be not what often accept limit, and easy receive interference, maintaining a respect complex and no-go. The speed of new generation controls unit to making the main trend of the market stage by stage, its predominate, basically be the IO control port that uses a convention no longer, use the industrial network technology of digitlization, for example Profibus, modbus, canopen, the agreement of network news report of the mainstream such as Ethercat, go up an engine control system, for example the control that unit of weightlessness type control can use means of afore-mentioned network news report and speed control unit to realize pair of motor directly, simple and reliable, and control precision and real time sex get rising significantly, safeguard simple, reliable. The automation control system of system of weightlessness type feeder is the technology with user product line for what direct, it is those who get used to new industrial product to create stable and accurate, efficient, reliable demand, more advanced industrial automation technology is developing application ceaselessly on product line, the tendency that because the automata technology of system of feeder of this weightlessness type needs necessarily,should develop forward and develop. CNC Milling CNC Machining