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Abstract: Based on M PC 05 Sports Controller Designed a set of Automatic packaging machine Control System . The control system in the packaging Servo Motor According to certain laws to follow spindle motor sport, the control system using classical proportional, integral, differential (PID) control algorithm to realize the servo motor control system of the packaging machine packing out product length is not only good consistency, but also long-line modification bags and packaging speed. Keywords: PID control of servo motor motion controller I. Introduction With the computer Electricity Electronic Technology, mechatronics products are very different countries. Machine tool , Car, Home Appliances , Packaging Machinery , Textile Machinery , Print Machinery and many other categories of products every year, new progress. Mechatronics has become increasingly concerned about all aspects of its work to improve the efficiency of improving people's Life , Energy conservation, enhance competitiveness plays a great role. In the packaging industry, the vast majority of packaging machine PLC To achieve closure on the horizontal motor control, the program used to follow the spindle speed analog to sports, use of this control system packaging, product consistency is not particularly desirable, more important is difficult to increase packaging speed of 200 bags / minute above Packing speed, this does not meet the enterprises to improve efficiency and demand. To this end, we MPC05 motion controller based on a packaging machine control system, the system has high quality packaging products and packaging efficiency are two important features, and also has a color tracking. II works Figure 1 shows a schematic of a packaging machine. 8 longitudinal sealing roller that is driven by the asynchronous motor spindle motor, 9 sealing roller, cold seal roller 10, 12 Cutter Driven by a servo motor from the motor shaft. To follow the spindle motor from the shaft to do follow the sport. Its working principle is MPC05 axis motion controller receives Encoder Signal, according to spindle encoder pulses in accordance with the law of motion must follow the main axis servo motor drive for the appropriate follow sports, the servo motor drive and driven through the chain roller sealing, cold sealing roller, cutter movement. Sealing roller shaft to the reduction gear ratio of 1:4 with an encoder for closed loop control. The value of the encoder and servo motor which should in theory go the distance compared to PID regulation, so that follow from the spindle motor servo motor axis closed loop position to do follow. III, Controller Control system controller using FPGA + DSP Program, Figure 2 chart for the controller, FLASH is used Storage DSP program, the extra space can be used to store the configuration program or add Project Order and system parameters and field data. NANDFLASH large board memory for storing configuration data, processing data. Controller core is DSP and FPGA, DSP Implementation CPU Functions, FPGA control functions and IO functions. The controller can process files RS 232 download, or through U disk Copy, the receiving shaft encoder feedback signal and the feedback signal from shaft encoder, the direction of the output pulse signal received servo motor driver, I / O port access stop signal or turn signals. Two serial ports, which A for the PC serial interface, use Matsushita Servo data transfer protocol Communication . Serial port B is HMI Interface, a standard Modbus protocol communications. 4, the design of control procedures As vertical and horizontal seal sealing roller roller for the week looks are all 300mm, horizontal sealing roller has four bars, the horizontal sealing rollers can each switch to the bag packing 4. If the packaging bag length 300 / 4 = 75mm, then are synchronized to follow, that is, vertical and horizontal sealing packing bag sealing roller equal to the distance to go. If Bags Grew up in 75mm, the horizontal sealing roller should do in the area of non-engagement slow motion, then speed up again to synchronize with the main shaft in preparation for the next gear, if the bag length is less than 75mm, the horizontal sealing rollers in the non-engagement zone should do l speed movement, then lower and lower speed to synchronize with the main shaft in preparation for the next engagement. Wang Feng in the mating area and the vertical is required roller synchronous movement, or when the horizontal sealing roller faster than the speed of vertical sealing rolls, it will appear the phenomenon of tear film; when the horizontal sealing roller Slower than the speed of vertical sealing rolls, the film will be a heap of phenomena, which will affect the quality of processed products, severe cases may also be packing film tearing. Figure 3 shows the movement from the motor shaft Model . A representative of located spindle, B representatives from the shaft. First calculate the A, B of the cycle length (cycle length is required for packaging a bag pulses), and the synchronization coefficient, then the A cycle is divided into horizontal as shown in Figure 3, paragraph 5, then under the A, paragraph 5 The length and synchronization coefficient, calculated induction factor, and finally calculate the corresponding B 5 the length of the synchronization segment or (lower) speed section, asynchronous segment, drop (l) segment and synchronization speed section, which in the first Synchronous cross section of two teeth meshing roller closure, the acceleration and deceleration in the middle section of the bag length to suit different requirements change bags to achieve long last a very short section is to enable synchronization into the next gear is more stable synchronization segment ( Here are the pulse length, number of units). Axis position control from the use of more mature classic PID control. PID control of simple principle, easy to use, and good adaptability. Here we use the incremental PID control algorithm. Incremental PID control has many advantages: (1) as the computer output increment, so malfunction when the impact is small, if necessary, the method can be used to remove the logic to judge; (2) do not accumulate in the equation to control the determination of incremental, only a sampling of recent k times the value of the, that was easier to get through the weighted and the better control effect. PID controller is a linear Regulator It to set the value (paragraphs from the shaft should be made of pulses) and the actual output value (from the shaft encoder value) with less, get control of bias, scale factor (P), integral factor (I) and the differential coefficient (D) constituted by a linear combination of control variables (servo motor pulse frequency). Increment of control variable is calculated as: Click here to view all News Map The e-commerce company in China offers quality products such as China LED Cabinet , China Mobile LED Display Screen, and more. For more , please visit Outdoor LED Display today!
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