The linear motor can be considered as a structural deformation of the rotary electric machine.
2020年5月26日The linear motor can be considered as a structural deformation of the rotary electric machine. It can be regarded as a rotary electric machine that is cut along its radial direction and then flattened and evolved. With the rapid development of automatic control technology and microcomputers, higher requirements have been placed on the positioning accuracy of various automatic control systems. In this case, the traditional rotary motor plus a set of linear motion drive devices that change the organization Nowadays, it is far from satisfying the requirements of modern control systems. For this reason, many countries in the world are studying, developing and using linear motors, making the demand for linear motors more and more vigorous.
Introduction to linear motors Linear motors, also known as linear motors, are a type of mechanical equipment commonly used by production companies in various fields. When it is installed on the production equipment, it can supply high-speed automatic China electric motors manufacturers https://www.chinakxdq.com/ linear motion for the production line of the enterprise, and then it can effectively improve the production capacity of the enterprise. Linear motors have many advantages such as simple structure, high acceleration, strong adaptability, easy adjustment and control, no lateral edge effect, and high primary winding utilization. Linear motors can be divided into three types: cylindrical linear motors, U-slot linear motors, and flat linear motors. Statistics on the supply of linear motors show that in recent years, the supply of linear motors in China has been increasing year by year, and the growth rate is relatively stable. In 2011, the output value of linear motors in China was 530 million units; by 2016, the output value of linear motors has reached about 850 million units, and the average annual compound growth rate from 2011 to 2016 was 10.0%. Demand for linear motors Nowadays, global linear motor malls are basically monopolized by foreign giants. GE, Bosch, Siemens and other companies all have linear motor companies.
The domestic understanding of linear motors mostly comes from the study of imported production equipment, and it is found that the core component is a set of linear motor units. More and more domestic enterprises have entered the development and production of linear motors, and their occupational needs and the scale of shopping malls have also become larger and larger. Statistics show that in recent years, the demand for linear motors in China has been increasing year by year, and the growth rate is relatively stable. In 2011, the demand for linear motors in China was 560 million units; by 2016, the demand for linear motors is about 870 million units, and the average annual compound growth rate from 2011 to 2016 is 9.2%. The development trend of linear motors In domestic shopping malls, although linear motors are still in the early stages of development, product technology and technology still need to be further improved and matured, but in the wave of continuous upgrading of industrial machinery automation, the future development prospects are good. In the rapidly developing industrial category at that time, the use of linear motors in industrial production has become faster and wider, and its development trend has the following five aspects: linear motor design is modular; linear motors and controllers are integrated; Linear motor supporting equipment is simplified; efficient linear motors replace ordinary linear motors.
Introduction to linear motors Linear motors, also known as linear motors, are a type of mechanical equipment commonly used by production companies in various fields. When it is installed on the production equipment, it can supply high-speed automatic China electric motors manufacturers https://www.chinakxdq.com/ linear motion for the production line of the enterprise, and then it can effectively improve the production capacity of the enterprise. Linear motors have many advantages such as simple structure, high acceleration, strong adaptability, easy adjustment and control, no lateral edge effect, and high primary winding utilization. Linear motors can be divided into three types: cylindrical linear motors, U-slot linear motors, and flat linear motors. Statistics on the supply of linear motors show that in recent years, the supply of linear motors in China has been increasing year by year, and the growth rate is relatively stable. In 2011, the output value of linear motors in China was 530 million units; by 2016, the output value of linear motors has reached about 850 million units, and the average annual compound growth rate from 2011 to 2016 was 10.0%. Demand for linear motors Nowadays, global linear motor malls are basically monopolized by foreign giants. GE, Bosch, Siemens and other companies all have linear motor companies.
The domestic understanding of linear motors mostly comes from the study of imported production equipment, and it is found that the core component is a set of linear motor units. More and more domestic enterprises have entered the development and production of linear motors, and their occupational needs and the scale of shopping malls have also become larger and larger. Statistics show that in recent years, the demand for linear motors in China has been increasing year by year, and the growth rate is relatively stable. In 2011, the demand for linear motors in China was 560 million units; by 2016, the demand for linear motors is about 870 million units, and the average annual compound growth rate from 2011 to 2016 is 9.2%. The development trend of linear motors In domestic shopping malls, although linear motors are still in the early stages of development, product technology and technology still need to be further improved and matured, but in the wave of continuous upgrading of industrial machinery automation, the future development prospects are good. In the rapidly developing industrial category at that time, the use of linear motors in industrial production has become faster and wider, and its development trend has the following five aspects: linear motor design is modular; linear motors and controllers are integrated; Linear motor supporting equipment is simplified; efficient linear motors replace ordinary linear motors.
Based on this signal and the spindle position signal, the PLC-based controller starts the stepper motor 13 to drive the weaving shaft to send out warp yarns.经 The let-off device is a 2-phase 56 series stepping motor DM5676A. For the loom let-off mechanism, its load characteristics are: When the stepper motor forwards the warp, the warp tension is not the load resistance, but the driving force. The application of PLC-controlled stepper motor in the let-off device.8_; phase current: 2.6 * 10-5Kgm2. PLC control of stepper motor PLC is a controller widely used in the field of industrial automation. It is an ideal driving element for loom let-off mechanism. Equipped with a multi-functional human-machine interface, it can realize the visual operation of warp rewinding and weaving, change the keyboard input of the weft density, prevent driving and block, and automatically close the car alarm when abnormal conditions occur. But in recent years, people have paid more attention to its frequency conversion characteristics. Its technical indicators are as follows: step angle: 1. FP0-C16T PLC has two pulse output terminals Y0 and Y1.
The frequency conversion characteristics of the stepper motor controlled by PLC are used in the let-off device of the textile machine to well solve the problem of uneven tension in the warp yarn, resulting in product quality.
In recent years, people have paid more attention to the frequency conversion characteristics of stepper motors. Figure 1 is the output circuit of Panasonic FP0-C16T transistor output PLC structure. Output, can be output separately at the same time. The frequency setting range is 0. (1) These two pulse output terminals can be used as two single-phase pulse output terminals without acceleration and deceleration.0A; holding torque: 1. Therefore, the stepper motor is very suitable for this type of servo mechanism with low speed and high torque, high speed and small torque, and high precision.
As shown in FIG. The frequency range is 0Hz_10KHz, and the acceleration / deceleration rate is 10Hz / 10ms_10KHz / 10ms. It is a type of stepper motor currently used at home and abroad. When the warp tension is too large or too small, the detection piece 6 will block the high-level signal output from the proximity switches 7 \u0026 rsquo; and 7 \u0026 rsquo; to the controller, and the controller will turn off the loom for manual processing. The technical indicators of the stepping motor let-off device are as follows: Conclusion The experimental results show that the step-by-step let-off device developed in this paper has good performance and reliable operation. (2) Weaving shaft drive system The weaving shaft drive system consists of stepper motor driver, stepper motor, worm gear reducer and weaving shaft. The duty cycle setting range is 0% _100%. The spindle position is also detected by the proximity switch non-contact detection. This article is to introduce the frequency conversion characteristics of the stepper motor controlled by PLC, so that it is used in the let-off device of the textile machine. 4, when the tension of the warp yarn 2 fluctuates, the movable back beam 4 drives the tension sensing lever 5 to swing around the point O. The frequency range is 0Hz_10KHz, which can be output continuously or in pulse form. With different control methods, there are three types of pulse output. They are mainly controlled by PLS and SPD1 instructions.. (3) Can be used as two-phase pulse output with trapezoidal acceleration and deceleration, mainly controlled by PULS and SPD1 instructions. Because of its low rotor inertia, high positioning accuracy, no cumulative error, and simple control, stepping motors have become one of the main actuators of industrial control, especially in positioning applications. Electronic let-off devices cannot do this, and at least three-speed shift gears are needed in this weft density range. If Y0 and Y2 are used for pulse and direction control, the control system is shown in Figure 2. Ventilation fan motor suppliers https://www.chinakxdq.com/product/ventilation-fan-motor/ Its functions are getting stronger and stronger, and its performance is getting more advanced. Its function principle is: after the signal sent by the control system is processed by drive amplification, the stepping motor is driven to rotate, then decelerated by the reducer, and then the weaving shaft is driven to release the warp. In order to cooperate with the control of stepper motors, many PLCs have built-in pulse output functions and set corresponding control instructions to control the stepper motors. Due to the non-uniformity of things change, the fixed frequency technology shows its limitations more and more, while the frequency conversion technology can well adapt to various randomly changing systems. Here again It is divided into two control modes, one is pulse + direction control (Y0, Y1 output pulse, Y2, Y3 output direction), and the other is forward and reverse pulse output (Y0 outputs CW pulse, Y1 outputs CCW pulse). Great progress. Because the stepper motor speed is convenient and the speed range is wide, the stepping motor let-off device can meet the weft density of 2_120 pieces / cm without changing gears.35Nm; static torque: 0. It can be output continuously or in the form of pulse train. The reactive stepper motor has the advantages of simple structure, durability, high torque-inertia ratio, high step frequency, fast response, small step angle, etc. If Y0 is used as the pulse output, the two-phase pulse output can be achieved by the method shown in Figure 3. At this time, the stepper motor speed may be high (determined by weft density); when the stepper motor reverses and tensions the warp, the warp tension is the load resistance, and the stepper motor needs to output a larger driving torque, and at this time The motor speed is relatively low, and the output torque frequency characteristics of the stepper motor (as shown by the dashed line in Figure 5) are just right for it.1Hz_999. Due to the non-uniformity of things change, the fixed frequency technology shows its limitations more and more, while the frequency conversion technology can well adapt to various randomly changing systems. The proximity switch 7 \u0026 rsquo; is a limit tension detection switch.9Hz. (2) It can be used as a two-phase variable duty cycle continuous pulse output terminal.07Nm; moment of inertia: 4. If the requirements are not met, the warp sending device is controlled to adjust. The detection of the spindle position is to control the allowable time of the warp movement to avoid beat-up and ensure that the weft yarn can be tightened. It is mainly controlled by PWM instructions. Therefore, the stepping motor only needs to output a small torque to overcome the self-locking property of the worm and worm gear, and the weaving shaft can be swiveled. When the detection piece 6 enters the effective area of the proximity switch 7, the proximity switch 7 sends a high-level signal. (1) Warp tension signal detection This device detects whether the fluctuation of warp tension meets the requirements by detecting whether the swing of the back beam exceeds the range . It is not uncommon to use programmable logic controllers (PLCs) to generate various step pulses to drive step motors to achieve various control and test purposes
The frequency conversion characteristics of the stepper motor controlled by PLC are used in the let-off device of the textile machine to well solve the problem of uneven tension in the warp yarn, resulting in product quality.
In recent years, people have paid more attention to the frequency conversion characteristics of stepper motors. Figure 1 is the output circuit of Panasonic FP0-C16T transistor output PLC structure. Output, can be output separately at the same time. The frequency setting range is 0. (1) These two pulse output terminals can be used as two single-phase pulse output terminals without acceleration and deceleration.0A; holding torque: 1. Therefore, the stepper motor is very suitable for this type of servo mechanism with low speed and high torque, high speed and small torque, and high precision.
As shown in FIG. The frequency range is 0Hz_10KHz, and the acceleration / deceleration rate is 10Hz / 10ms_10KHz / 10ms. It is a type of stepper motor currently used at home and abroad. When the warp tension is too large or too small, the detection piece 6 will block the high-level signal output from the proximity switches 7 \u0026 rsquo; and 7 \u0026 rsquo; to the controller, and the controller will turn off the loom for manual processing. The technical indicators of the stepping motor let-off device are as follows: Conclusion The experimental results show that the step-by-step let-off device developed in this paper has good performance and reliable operation. (2) Weaving shaft drive system The weaving shaft drive system consists of stepper motor driver, stepper motor, worm gear reducer and weaving shaft. The duty cycle setting range is 0% _100%. The spindle position is also detected by the proximity switch non-contact detection. This article is to introduce the frequency conversion characteristics of the stepper motor controlled by PLC, so that it is used in the let-off device of the textile machine. 4, when the tension of the warp yarn 2 fluctuates, the movable back beam 4 drives the tension sensing lever 5 to swing around the point O. The frequency range is 0Hz_10KHz, which can be output continuously or in pulse form. With different control methods, there are three types of pulse output. They are mainly controlled by PLS and SPD1 instructions.. (3) Can be used as two-phase pulse output with trapezoidal acceleration and deceleration, mainly controlled by PULS and SPD1 instructions. Because of its low rotor inertia, high positioning accuracy, no cumulative error, and simple control, stepping motors have become one of the main actuators of industrial control, especially in positioning applications. Electronic let-off devices cannot do this, and at least three-speed shift gears are needed in this weft density range. If Y0 and Y2 are used for pulse and direction control, the control system is shown in Figure 2. Ventilation fan motor suppliers https://www.chinakxdq.com/product/ventilation-fan-motor/ Its functions are getting stronger and stronger, and its performance is getting more advanced. Its function principle is: after the signal sent by the control system is processed by drive amplification, the stepping motor is driven to rotate, then decelerated by the reducer, and then the weaving shaft is driven to release the warp. In order to cooperate with the control of stepper motors, many PLCs have built-in pulse output functions and set corresponding control instructions to control the stepper motors. Due to the non-uniformity of things change, the fixed frequency technology shows its limitations more and more, while the frequency conversion technology can well adapt to various randomly changing systems. Here again It is divided into two control modes, one is pulse + direction control (Y0, Y1 output pulse, Y2, Y3 output direction), and the other is forward and reverse pulse output (Y0 outputs CW pulse, Y1 outputs CCW pulse). Great progress. Because the stepper motor speed is convenient and the speed range is wide, the stepping motor let-off device can meet the weft density of 2_120 pieces / cm without changing gears.35Nm; static torque: 0. It can be output continuously or in the form of pulse train. The reactive stepper motor has the advantages of simple structure, durability, high torque-inertia ratio, high step frequency, fast response, small step angle, etc. If Y0 is used as the pulse output, the two-phase pulse output can be achieved by the method shown in Figure 3. At this time, the stepper motor speed may be high (determined by weft density); when the stepper motor reverses and tensions the warp, the warp tension is the load resistance, and the stepper motor needs to output a larger driving torque, and at this time The motor speed is relatively low, and the output torque frequency characteristics of the stepper motor (as shown by the dashed line in Figure 5) are just right for it.1Hz_999. Due to the non-uniformity of things change, the fixed frequency technology shows its limitations more and more, while the frequency conversion technology can well adapt to various randomly changing systems. The proximity switch 7 \u0026 rsquo; is a limit tension detection switch.9Hz. (2) It can be used as a two-phase variable duty cycle continuous pulse output terminal.07Nm; moment of inertia: 4. If the requirements are not met, the warp sending device is controlled to adjust. The detection of the spindle position is to control the allowable time of the warp movement to avoid beat-up and ensure that the weft yarn can be tightened. It is mainly controlled by PWM instructions. Therefore, the stepping motor only needs to output a small torque to overcome the self-locking property of the worm and worm gear, and the weaving shaft can be swiveled. When the detection piece 6 enters the effective area of the proximity switch 7, the proximity switch 7 sends a high-level signal. (1) Warp tension signal detection This device detects whether the fluctuation of warp tension meets the requirements by detecting whether the swing of the back beam exceeds the range . It is not uncommon to use programmable logic controllers (PLCs) to generate various step pulses to drive step motors to achieve various control and test purposes
