System and method for dynamic balance control of spinning tension of blended colored spun yarn

Abstract

This invention relates to the field of spinning control technology, and discloses a dynamic balance control system and method for spinning tension of blended colored yarn. The system includes: during the ring spinning process of blended colored yarn, acquiring measured yarn tension, the widest radius of the balloon, the height of the widest point, and the total height of the balloon within the same control cycle; generating a measured yarn tension state determination result and a balloon bulging torque; comparing the absolute value of the balloon bulging torque in the current control cycle with that in the previous control cycle to obtain a bulging trend determination result; correcting the spindle speed based on the measured yarn tension state determination result, and reducing the current reciprocating speed of the ring rail when the balloon space imbalance worsens; outputting a dynamic balance state when the measured yarn tension is within the process allowable range and the absolute value of the balloon bulging torque no longer increases; stopping the corresponding spindle position and triggering an alarm when the measured yarn tension fails, the balloon profile cannot be continuously extracted, or the error persists after correction.

Description

Technical Field

[0001] This invention relates to the field of spinning control technology, and more specifically, to a dynamic tension balance control system and method for blended colored yarns. Background Technology

[0002] In ring spinning of blended colored yarns, simultaneous attention is typically paid to drafting stability, twisting stability, and winding stability. When rovings of different colors or compositions enter the drafting zone within a production batch, fiber cohesion, friction state, and instantaneous yarn load vary with the feed section. The yarn air loop between the guide hook and the traveler also changes with spindle speed, ring rail position, and winding radius. The on-site control system generally reads the measured yarn tension, compares it with the process allowable band corresponding to the set yarn tension, and then corrects the spindle speed via the spindle frequency converter. This approach is suitable for handling situations where the measured yarn tension is too high or too low, but its control basis is concentrated on a single tension feedback.

[0003] In actual machine setup and continuous production, measuring yarn tension within the allowable range does not necessarily indicate stable operation of the yarn balloon. Changes in the widest radius of the balloon affect the traction of the traveler and the winding force, changes in the height of the widest point reflect the shift of the eccentric position between the guide hook and the ring plane, and the total height of the balloon will change according to the ring plate's rising and falling cycle. If the controller only waits for the measured yarn tension to exceed the limit before correcting the spindle speed, the balloon imbalance may not be detected by the control loop in the early stages.

[0004] To improve the controllability of continuous production of blended colored yarn, existing equipment components such as cameras, backlights, yarn tension measurement and acquisition, speed feedback, PLCs, spindle frequency converters, and ring rail drivers are equipped to participate in closed-loop control. Without altering the original drafting, twisting, and winding paths, the measured yarn tension, the widest radius of the ring rail, the height of the widest point, and the total height of the ring rail need to be processed within the same control cycle. This ensures that spindle speed correction, current ring rail reciprocating speed adjustment, dynamic balance status output, and abnormal alarms correspond to actual spinning actions. Summary of the Invention

[0005] This invention provides a dynamic balance control system and method for spinning tension of blended colored yarns, which solves the technical problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution.

[0007] Firstly, the method for dynamic balance control of spinning tension in blended colored yarn is applicable to the ring spinning process of blended colored yarn, including: Within the same control cycle, the yarn tension, the widest radius of the air ring, the height of the widest point, and the total height of the air ring are obtained and measured. The measured yarn tension is used to determine the yarn tension state based on the process allowable zone corresponding to the measured yarn tension and the set yarn tension. Based on the measured yarn tension, the widest radius of the air ring, the height of the widest point, and the total height of the air ring, an air ring bulging moment is generated. The air ring bulging moment varies with the measured yarn tension and the widest radius of the air ring, and its direction is determined by the position of the height of the widest point relative to the middle of the total height of the air ring. It is used to characterize the degree of spatial asymmetry formed by the radial outward bulging and axial offset of the yarn air ring. Compare the absolute values ​​of the gas cylinder bulging torque in the current control cycle and the previous control cycle to generate a bulging trend determination result; adjust the spindle speed based on the measured yarn tension state determination result; When the bulging trend indicates that the imbalance in the air ring space is worsening, reduce the current reciprocating speed of the steel ring plate. When the measured yarn tension is within the process allowable range and the absolute value of the balloon deflection torque no longer increases, the output dynamic equilibrium state is reached. When the measured yarn tension fails, the balloon profile cannot be continuously extracted, or the measured yarn tension still fails to return to the process allowable range after reaching the preset correction number, and the absolute value of the balloon bulging torque in the current control cycle is still increasing relative to the absolute value of the balloon bulging torque in the previous control cycle, the corresponding spindle position is stopped and an alarm is triggered.

[0008] Secondly, the dynamic balance control system for spinning tension of blended colored yarn includes: The yarn tension acquisition unit is used to acquire the measured yarn tension. Side view image acquisition unit, used to acquire side view of the atmosphere; The spatial measurement unit is used to read the widest radius, the height of the widest point, and the total height of the air sphere from the side view of the air sphere. The bulging discrimination unit is used to generate the bulging torque of the air ring based on the measured yarn tension, the widest radius of the air ring, the height of the widest point, and the total height of the air ring, and to compare the absolute values ​​of the bulging torque of the air ring in the current control cycle and the previous control cycle to generate the bulging trend judgment result. The measured yarn tension state determination unit is used to generate the measured yarn tension state determination result based on the measured yarn tension, the set yarn tension, and the process allowable range; The control command generation unit is used to generate a spindle speed correction command to reduce the spindle speed when the measured yarn tension is too high, to generate a spindle speed correction command to increase the spindle speed when the measured yarn tension is too low, to generate a short-term deceleration command for the ring rail when the bulging trend determination result indicates that the imbalance of the air ring space is intensifying, to generate a dynamic balance state output command when the measured yarn tension is within the process allowable zone and the absolute value of the air ring bulging torque no longer increases, and to generate a command to stop the corresponding spindle position and trigger an alarm when the measured yarn tension fails, the air ring profile cannot be continuously extracted, or the measured yarn tension still has not returned to the process allowable zone after reaching the preset correction number and the absolute value of the air ring bulging torque in the current control cycle is still increasing relative to the absolute value of the air ring bulging torque in the previous control cycle. The execution unit is used to execute the spindle speed correction command and the short-time deceleration command of the ring rail. The status output unit is used to respond to the dynamic equilibrium status output command and output the dynamic equilibrium status. The exception handling unit is used to execute commands to stop the corresponding spindle position and trigger an alarm.

[0009] Thirdly, a control device includes a processor and a memory, wherein the memory stores a program that, when executed by the processor, implements the dynamic balance control method for spinning tension of blended colored yarn.

[0010] Fourthly, a computer-readable storage medium is provided, characterized in that it stores a program, which, when executed by a control device, implements the dynamic balance control method for spinning tension of the blended colored yarn. Compared with the prior art, the present invention has the following substantial features and significant progress: In the ring spinning process of blended colored yarn, this invention uses the measured yarn tension, the widest radius of the balloon, the height of the widest point, and the total height of the balloon in the same control cycle for equipment control. This allows the controller to not only adjust the spindle speed according to the process allowance, but also trigger the ring rail to reduce its forward reciprocating speed when the measured yarn tension is within limits but the balloon space imbalance worsens. After the recovery conditions are met, the controller outputs a dynamic balance state. This process retains the existing drafting, twisting, and winding paths, reduces the lag caused by feedback from a single measured yarn tension, and lowers the risk of tension peaks, yarn breakage, and winding instability. At the same time, when the measured yarn tension fails or the balloon profile cannot be continuously extracted, the corresponding spindle position is stopped and an alarm is triggered, facilitating the production line to maintain controllable operation. Attached Figure Description

[0011] Figure 1 This is a diagram of the dynamic balance control system architecture for the spinning tension of blended colored yarn according to the present invention. Detailed Implementation

[0012] The following description is provided in conjunction with the accompanying drawings. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the invention; those skilled in the art can make equivalent substitutions or combinations for the specific implementations.

[0013] This embodiment applies to the ring spinning process of blended colored yarn. The ring spinning process of blended colored yarn typically includes roving feeding, drafting, yarn guiding, twisting, and winding. During operation, the yarn forms a yarn air loop between the guide hook and the traveler. Because the colored fiber component in blended colored yarn, the roving feeding sequence, or the feeding ratio can change along the yarn length, the yarn cohesion, traveler traction, and winding stress will continuously change. Simply controlling the spindle speed based on whether the measured yarn tension exceeds the process allowance cannot distinguish between operating states where the measured yarn tension is the same but the spatial posture of the yarn air loop is different.

[0014] In this embodiment, the ring spinning actuator 100 includes drafting, guiding, twisting, and winding mechanisms for forming blended colored yarn in the ring spinning process. In this ring spinning actuator 100, the yarn sequentially passes through the drafting output position, the guide hook, the traveler, the ring, and the bobbin, and completes twisting and winding under the combined action of the spindle speed and the current reciprocating speed of the ring plate.

[0015] like Figure 1 As shown, the yarn tension acquisition unit 110 acquires the measured yarn tension from the ring spinning actuator 100. The measured yarn tension is a direct measurement result of the yarn's stress state on-site, which can be obtained from the existing yarn guide plate force sensor or from the equivalent tension device. The yarn tension acquisition unit 110 outputs the measured yarn tension to the measured yarn tension state determination unit 150 and the deflection discrimination unit 140, respectively. With this setting, the measured yarn tension participates in both the generation of the measured yarn tension state determination result and the generation of the balloon deflection torque, avoiding the measured yarn tension being used only as a single-path over-limit trigger.

[0016] like Figure 1As shown, the side view image acquisition unit 120 acquires a side view of the gas ring from the ring spinning actuator 100. The gas ring side view is used to read the spatial geometry of the yarn gas ring. The side view image acquisition unit 120 outputs the gas ring side view to the spatial quantity reading unit 130, which reads the widest radius, the height of the widest point, and the total height of the gas ring from the side view. The bulging discrimination unit 140 receives the measured yarn tension, the widest radius, the height of the widest point, and the total height of the gas ring, and generates a gas ring bulging torque. The bulging discrimination unit 140 also compares the absolute values ​​of the gas ring bulging torque in the current control cycle and the previous control cycle to generate a bulging trend judgment result. The measured yarn tension state judgment unit 150 generates a measured yarn tension state judgment result based on the measured yarn tension, the set yarn tension, and the process allowable zone. The control command generation unit 160 receives the eccentricity trend determination result and the measured yarn tension state determination result, and controls the execution unit 170, the status output unit 180 or the abnormality handling unit 190 to work accordingly.

[0017] Furthermore, the implementation method for initializing the ring spinning actuator 100 and the controller is as follows: Before acquiring the measured yarn tension, maximum radius of the balloon, maximum height of the widest point, and total height of the balloon, the controller first loads the blended yarn spinning batch process. The blended yarn spinning batch process includes setting the yarn tension, the front roller exit speed, a predetermined curve for controlling the spindle speed, and a ring rail lifting curve. The set yarn tension is the target yarn stress value during the ring spinning process of the blended yarn. The front roller exit speed is the yarn feed speed at the drafting output end, used to verify the predetermined twist relationship during spindle speed correction. The predetermined curve for controlling the spindle speed is a spindle speed control reference pre-written into the controller according to the batch process, and the ring rail lifting curve is a ring rail movement reference pre-written into the controller according to the winding requirements.

[0018] In this embodiment, the yarn tension is set as follows: This indicates that the measured yarn tensile strength is... Indicates the setting of yarn tension. The unit is Newton, derived from the batch process of blended yarn spinning. The yarn tensile strength is measured. The unit is Newton, derived from the yarn tension acquisition unit 110. The process allowable range is a range determined around the set yarn tension. The process allowable range can be given in advance by the blended yarn spinning batch process, or it can be read by the controller according to the existing process specifications.

[0019] The allowable process band is read by the controller from the blended yarn spinning batch process during batch initialization and bound to the set yarn tension for storage. If the blended yarn spinning batch process directly provides the upper and lower limits of the allowable process band, the controller directly uses these limits. If the blended yarn spinning batch process records the set yarn tension and the positive and negative deviations around that tension, the controller converts these deviations into the upper and lower limits of the allowable process band and saves them. Once the allowable process band is written to the current batch, it is not automatically changed by the deflection drum discrimination unit 140 during the current batch's operation. After changing the blended yarn spinning batch process, re-joining and restarting the batch, recalibrating the measured yarn tension acquisition unit 110, or repairing the ring spinning actuator 100, the controller rereads and confirms the allowable process band.

[0020] The equipment protection range is given by the original protection parameters of the ring spinning actuator 100 and is stored together with the range of the yarn tension acquisition unit 110 during controller initialization. A measured yarn tension exceeding the equipment protection range refers to a measured yarn tension higher than the upper limit of the equipment protection range, lower than the lower limit of the equipment protection range, or exceeding the effective range that the measured yarn tension acquisition unit 110 can reliably output. The preset correction count is written to the controller during batch initialization based on the blended spinning batch process, equipment protection strategy, or existing alarm rules of the controller. During the current batch operation, the controller only counts and compares this preset correction count and does not temporarily increase the preset correction count when a continuous abnormality occurs.

[0021] In this embodiment, the front roller yarn exit speed is as follows: The unit is meters per second, derived from the front roller speed feedback. The spindle rotation speed in this embodiment is... The unit is revolutions per minute (RPM), derived from spindle speed feedback. The front roller yarn exit speed and spindle speed together reflect the predetermined twist relationship during speed adjustment. The controller acquires the front roller yarn exit speed and spindle speed during spindle speed correction to confirm that the spindle speed correction does not cause the predetermined twist relationship to deviate from the batch process of blended yarn spinning.

[0022] When establishing the ring spinning path, the operator or automatic splicing mechanism introduces each colored or uncolored roving into the drafting zone. After being output by the front roller, the yarn sequentially passes through the guide hook, the traveler, and is wound onto the bobbin. Once the path is established, the controller records the operating status of the corresponding spindle position.

[0023] Upon completion of calibration, the yarn tension acquisition unit 110 performs zero-point and range calibration according to its existing equipment instructions, ensuring that the output measured yarn tension can be compared with the set yarn tension in the same unit. The side view image acquisition unit 120 performs pixel-to-actual length conversion using the ring diameter, calibration ruler, or known equipment dimensions.

[0024] The ring rail's lifting curve is used to determine the original direction of movement and the stroke endpoints. The original direction of movement is the direction the ring rail is currently executing along its predetermined lifting path, and the stroke endpoints are the upper and lower positions specified by the ring rail's lifting curve. When subsequently reducing the ring rail's forward reciprocating speed, only the speed is reduced. This ensures that the adjustment of the ring rail's forward reciprocating speed remains within the existing winding forming frame, preventing the suppression action of gas ring space imbalance from escalating into a new winding path change.

[0025] In one possible implementation, the controller can be a PLC, an industrial computer, an embedded controller, or an edge computing module. All of these controller types are control carriers that can be used in existing ring spinning machine control environments.

[0026] Furthermore, the implementation method for data acquisition within the same control cycle is as follows: Acquiring the measured yarn tension, maximum radius of the air bladder, maximum height of the air bladder point, and total height of the air bladder within the same control cycle is a fundamental step in this implementation method. The control cycle can be determined by the controller scan cycle, an external trigger signal, or a buffer sequence number. Regardless of the conventional synchronization method used, the controller uses the measured yarn tension, maximum radius of the air bladder, maximum height of the air bladder point, and total height of the air bladder within the same control cycle as the control basis at the same moment, avoiding the formation of incorrect air bladder bulging torque by splicing measurement values ​​from different times.

[0027] The yarn tension acquisition unit 110 reads the measured yarn tension in each control cycle. When using an existing yarn guide plate force sensor, the yarn tension acquisition unit 110 can read the force signal of the yarn guide plate and obtain the measured yarn tension through existing analog-to-digital conversion, filtering, and unit conversion. When using an equivalent tension device, the yarn tension acquisition unit 110 can read the tension signal output by the equivalent tension device.

[0028] The side view image acquisition unit 120 acquires a side view of the yarn balloon using a camera and a backlight facing the plane where the balloon is located. The relative positions of the camera and the backlight ensure that the yarn balloon forms a clear outline in the side view, and the field of view of the side view covers the ring plane to the yarn guide hook. The ring plane serves as a zero-height reference for reading the widest point height and the total height of the balloon, while the yarn guide hook serves as an upper reference for reading the total height of the balloon.

[0029] The spatial measurement unit 130 reads the widest radius, the height of the widest point, and the total height of the atmosphere from the same frame of the atmosphere outline. The widest radius of the atmosphere is... The unit is meters, representing the maximum lateral distance from the centerline of the atmosphere to the spindle axis. The height of the widest point is... The unit is meters, and it represents the axial distance measured upwards from the steel ring plane to the widest point of the air ring. The total height of the air ring is expressed as... This indicates that the unit is meters, and it represents the axial distance measured upwards from the ring plane to the center of the guide hook. It is important that these three spatial measurements come from the same frame of the balloon profile to avoid mismatch between the widest point and the overall height reference of the balloon.

[0030] The spatial measurement unit 130 can first perform routine noise reduction on the side view of the air ring, then extract the air ring outline, and convert the pixel distance into the actual length according to the calibration relationship. The widest radius of the air ring can be read by using the spindle axis as a lateral reference to find the maximum lateral distance between the air ring centerline and the spindle axis. The height of the widest point can be read by obtaining the position corresponding to the widest radius of the air ring and then reading the axial distance of that position relative to the ring plane. The total height of the air ring can be determined based on the axial distance between the ring plane and the center of the yarn guide hook.

[0031] When the space measurement unit 130 reads the widest radius, widest point height, and total height of the air ring, it first determines the positions of the ring plane, the center of the yarn guide hook, and the spindle axis in the side view of the air ring based on the calibration image. The ring plane can be determined by the edge of the ring or a calibration line coinciding with the ring plane. The center of the yarn guide hook can be determined by the installation position of the yarn guide hook or the center mark of the yarn guide hook in the calibration image. The spindle axis can be determined by the bobbin centerline, the spindle centerline, or a calibration line coinciding with the spindle axis. After the above three reference positions are determined, the space measurement unit 130 then extracts the centerline of the air ring and uses the maximum lateral distance of the air ring centerline relative to the spindle axis as the widest radius of the air ring, the axial distance of the point corresponding to this maximum lateral distance relative to the ring plane as the widest point height, and the axial distance from the ring plane to the center of the yarn guide hook as the total height of the air ring.

[0032] During the processing of the gas ring side view, the spatial quantity reading unit 130 can sequentially perform grayscale conversion, background subtraction, threshold segmentation, connected component filtering, contour refinement, and centerline positioning. Background subtraction is used to remove the stable background formed by backlighting and fixed components; threshold segmentation is used to separate the yarn gas ring contour from the gas ring side view; connected component filtering is used to retain the contours connected to the area where the yarn gas ring is located; contour refinement is used to form a measurable gas ring centerline; and centerline positioning is used to read the gas ring's widest radius, widest point height, and total height. The above processing are routine steps in machine vision measurement, enabling the controller to directly read the geometric quantities in the gas ring side view.

[0033] The measured yarn tension, maximum radius of the air swivel, maximum height of the widest point, and total height of the air swivel in the current control cycle should be bound to the same control cycle data in the controller. If a timestamp method is used, the controller will bind data within the same sampling time window; if a trigger signal method is used, the controller will bind data collected under the same trigger signal; if a buffer sequence number method is used, the controller will bind data under the same buffer sequence number.

[0034] When the side view of the gas ring does not form a continuous gas ring outline, the spatial quantity reading unit 130 does not output the widest radius, the height of the widest point, and the total height of the gas ring for closed-loop control. The inability to extract the gas ring outline continuously may be caused by yarn breakage, fly waste obstruction, window contamination, abnormal backlighting, or camera field of view shift. In this case, the controller does not use estimated values ​​to replace the widest radius, the height of the widest point, and the total height of the gas ring, but instead enters the exception handling logic.

[0035] The determination of whether the balloon profile cannot be extracted continuously is based on whether the spatial measurement reading unit 130 can simultaneously obtain the widest radius, the height of the widest point, and the total height of the balloon in the same frame of balloon side view. If the balloon centerline cannot form a traceable continuous profile from the ring plane to the yarn guide hook, or if the balloon centerline is broken so that the corresponding point of the maximum lateral distance cannot be uniquely determined, or if the ring plane, the center of the yarn guide hook, and the spindle axis cannot be determined simultaneously in the same frame of balloon side view, then the balloon profile is determined to be unable to be extracted continuously. To avoid false stops caused by single-frame noise, the controller can confirm that the balloon profile cannot be extracted continuously if the widest radius, the height of the widest point, and the total height of the balloon cannot be read simultaneously in several consecutive control cycles; the number of consecutive control cycles is given by the blended yarn spinning batch process or the controller's existing alarm rules during batch initialization.

[0036] It should be noted that when the brightness, contrast, or backlighting of the gas ring side view makes it impossible to separate the center line of the gas ring from the background, it is also determined that the gas ring outline cannot be extracted continuously. In this case, the spatial quantity reading unit 130 does not use the gas ring's widest radius, widest point height, or total gas ring height from the previous control cycle to supplement the current control cycle, nor does it estimate the gas ring's widest radius, widest point height, or total gas ring height at the current spindle position based on the gas ring side view of adjacent spindle positions.

[0037] Furthermore, the implementation method for generating the bulge torque is as follows: The bulge detection unit 140 generates the bulge torque based on the measured yarn tension, the widest radius of the balloon, the height of the widest point, and the total height of the balloon. The unit is Newton-meter. The bulge tension varies with the measured yarn tension and the widest radius of the balloon, and its direction is determined by the position of the height of the widest point relative to the center of the total balloon height. It is used to characterize the degree of spatial asymmetry formed by the radial bulge and axial offset of the yarn balloon.

[0038] To generate the offset tension of the yarn loop, the offset discrimination unit 140 uses the ring plane as its zero height and considers the total height of the loop as the axial distance from the ring plane to the center of the yarn guide hook. When the widest point is above the middle of the total loop height, the maximum lateral bulge of the yarn loop is biased towards the yarn guide hook; when the widest point is below the middle of the total loop height, the maximum lateral bulge of the yarn loop is biased towards the ring plane. The widest radius of the loop reflects the radial bulge contribution of the yarn loop, the position of the widest point relative to the middle of the total loop height reflects the axial offset direction of the yarn loop, and the measured yarn tension reflects the degree of mechanical action.

[0039] In one specific implementation, the eccentricity discrimination unit 140 first calculates the upper and lower equivalent action arms based on the widest radius of the gas ring, the height of the widest point, and the total height of the gas ring. The upper equivalent action arm is... It is indicated that the lower equivalent working arm is... The upper and lower equivalent action arms are used to illustrate the equivalent distribution of the widest radius of the atmosphere in the two segments above and below the widest point.

[0040] in, The upper equivalent working arm is represented by meters. The widest radius of the atmosphere, in meters, is derived from spatial measurement unit 130; The height at the widest point, in meters, is derived from spatial measurement unit 130. The total height of the atmosphere is in meters, sourced from spatial measurement unit 130.

[0041] in, The lower equivalent working arm is represented by meters. This is the widest radius of the atmosphere; This represents the total height of the air sphere; The height is the widest point. Both the upper and lower equivalent action arms are derived from the spatial quantities within the same frame of the gas sphere profile.

[0042] The discrepancy detection unit 140 then applies the measured yarn tension to the upper and lower equivalent action arms respectively, obtaining the upper tension and lower tension. The upper tension is... This indicates that the lower tension is... express.

[0043] in, The upper tension is expressed in Newton-meters. The yarn tension is measured in Newtons, and the data is obtained from the yarn tension acquisition unit 110. This is the widest radius of the atmosphere; The height is the widest point. This represents the total height of the air sphere.

[0044] in, The lower tension is expressed in Newton-meters. To measure yarn tension; This is the widest radius of the atmosphere; This represents the total height of the air sphere; This is the height at the widest point.

[0045] The difference between the upper and lower tensions of the discrepancy unit 140 is used as the discrepancy tension of the gas cylinder.

[0046] in, The unit is the eccentricity torque of the gas ring, measured in Newton-meters. For upper tension; For the lower side tension; To measure yarn tension; This is the widest radius of the atmosphere; The height is the widest point. This represents the total height of the air sphere.

[0047] The dimensional relationship of the bulge torque is as follows: in, The dimension of the eccentricity of the gas cylinder is denoted by . To determine the dimensions of yarn tension; It is a unit of measurement for the widest radius of the atmosphere; It represents Newton meters.

[0048] When the height of the widest point is equal to half the total height of the air swivel, the air swivel bulge torque is zero or close to zero, indicating that under the currently measured yarn tension and the widest radius of the air swivel, the height of the widest point has no significant axial deviation relative to the center of the total air swivel height. When the height of the widest point is greater than half the total height of the air swivel, the air swivel bulge torque is positive, indicating that the widest point is located above the center of the total air swivel height. When the height of the widest point is less than half the total height of the air swivel, the air swivel bulge torque is negative, indicating that the widest point is located below the center of the total air swivel height.

[0049] The absolute value of the balloon bulge moment is used to describe the changing trend of spatial asymmetry. The larger the absolute value of the balloon bulge moment, the more obvious the spatial asymmetry formed by the widest radius and the widest point height of the balloon under the current measured yarn tension. Since the balloon bulge moment simultaneously includes the measured yarn tension, the widest radius of the balloon, the height of the widest point, and the total height of the balloon, it can be used to distinguish the balloon posture of different yarns under the same measured yarn tension.

[0050] When calculating the bulging moment of the gas ring, the controller performs a validity check on the total height of the gas ring. If the total height of the gas ring cannot be reliably read from the side view of the gas ring, or if the gas ring profile cannot be extracted continuously, the bulging discrimination unit 140 does not calculate the bulging moment of the gas ring. When the total height of the gas ring can be reliably read, the total height of the gas ring is used as the denominator in the calculation.

[0051] Before the total height of the air ring is used as the denominator in the calculation of the air ring bulge torque, the bulge discrimination unit 140 also performs a validity judgment on the total height of the air ring. The total height of the air ring must be a positive length read from the ring plane to the center of the yarn guide hook, and should be consistent with the geometric position corresponding to the ring plate rise and fall curve of the current control cycle. If the total height of the air ring is not read, the total height of the air ring is a non-positive length, the change of the total height of the air ring relative to the previous control cycle does not conform to the continuous change allowed by the ring plate rise and fall curve, or the total height of the air ring is inconsistent with the calibrated distance from the ring plane to the center of the yarn guide hook, then the bulge discrimination unit 140 does not calculate the air ring bulge torque and hands over the control cycle to the abnormal processing unit 190 for processing.

[0052] Furthermore, the implementation methods for obtaining the yarn tension state determination results and the bulging trend determination results are as follows: The yarn tension condition determination unit 150 generates a yarn tension condition determination result based on the measured yarn tension, the set yarn tension, and the process allowable range. The yarn tension condition determination result includes: measured yarn tension too high, measured yarn tension too low, and measured yarn tension within acceptable limits.

[0053] Within a control cycle, when the measured yarn tension is higher than the upper limit of the process allowable range, the yarn tension status determination unit 150 determines that the measured yarn tension is too high. When the measured yarn tension is lower than the lower limit of the process allowable range, the yarn tension status determination unit 150 determines that the measured yarn tension is too low. When the measured yarn tension is within the process allowable range, the yarn tension status determination unit 150 determines that the measured yarn tension is qualified.

[0054] The sag discrimination unit 140 compares the absolute values ​​of the sag torque in the current control cycle and the previous control cycle to generate a sag trend determination result. The sag trend determination result includes whether the atmospheric spatial imbalance is worsening or no longer worsening. When the absolute value of the sag torque in the current control cycle is greater than that in the previous control cycle, the sag trend determination result indicates that the atmospheric spatial imbalance is worsening. When the absolute value of the sag torque in the current control cycle is less than or equal to that in the previous control cycle, the sag trend determination result indicates that the atmospheric spatial imbalance is no longer worsening.

[0055] To facilitate comparison between the current and previous control cycles, the controller can store the absolute value of the balloon eccentricity torque from the previous control cycle in its memory. Upon entering the current control cycle, the eccentricity discrimination unit 140 first generates the balloon eccentricity torque for the current control cycle based on the measured yarn tension, balloon maximum radius, maximum point height, and total balloon height. Then, it reads the absolute value of the balloon eccentricity torque from the previous control cycle and completes the comparison. This saving and reading process is a routine data processing step required for comparing adjacent control cycles.

[0056] The results of the measured yarn tension status assessment and the bulging trend assessment are generated separately. This is because the measured yarn tension reflects whether the yarn force is within the process-allowed range, while the bulging trend assessment reflects whether the absolute value of the bulging torque in the air pocket increases in adjacent control cycles. For the ring spinning process of blended colored yarns, the measured yarn tension being within the process-allowed range does not necessarily indicate stable air pocket spatial posture; changes in the air pocket's widest radius and widest point height may already indicate an increasing air pocket spatial imbalance before the measured yarn tension exceeds the limit.

[0057] When the measured yarn tension is within the allowable range and the absolute value of the ring bulge torque no longer increases, the controller can determine that the current control cycle meets the conditions for dynamic output balance. When the measured yarn tension is within the allowable range, but the bulge trend indicates that the ring space imbalance is worsening, the controller does not change the spindle speed solely based on the measured yarn tension. Instead, it generates a short-term deceleration command for the ring rail via the control command generation unit 160. This process allows the system to suppress the worsening deviation of the yarn ring space posture before the measured yarn tension exceeds the allowable range.

[0058] When the measured yarn tension is too high or too low, the control command generation unit 160 adjusts the spindle speed based on the measured yarn tension status determination result. If the bulging trend determination result also indicates that the imbalance in the air ring space is worsening, the control command generation unit 160 also generates a short-term deceleration command for the ring rail. Thus, the measured yarn tension status determination result is used to determine the direction of spindle speed correction, and the bulging trend determination result is used to determine whether to reduce the current reciprocating speed of the ring rail.

[0059] Furthermore, the implementation methods for generating and executing control instructions are as follows: The control command generation unit 160 adjusts the spindle speed based on the measured yarn tension. Specifically, when the measured yarn tension is too high, the control command generation unit 160 generates a spindle speed correction command to reduce the spindle speed. When the measured yarn tension is too low, the control command generation unit 160 generates a spindle speed correction command to increase the spindle speed. When the measured yarn tension is within acceptable limits, the control command generation unit 160 does not change the spindle speed independently based on the measured yarn tension.

[0060] When the measured yarn tension is too high or too low, the control command generation unit 160 corrects the spindle speed based on a predetermined curve used to control the spindle speed. Using the predetermined curve as a reference means that the controller does not generate a new spindle speed operating path independently of the blended spinning batch process, but instead implements a reduction or increase in the spindle speed near the current spindle speed corresponding to the predetermined curve.

[0061] The correction range of the spindle speed correction command is given by the original spindle frequency converter control parameters of the blended yarn spinning batch process or equipment during batch initialization. The control command generation unit 160 outputs a spindle speed correction command once per control cycle according to this correction range, and the spindle speed after a single correction does not exceed the upper and lower limits of the spindle speed allowed by the equipment corresponding to the predetermined curve used to control the spindle speed. If the measured yarn tension is too high, the control command generation unit 160 reduces the spindle speed by the correction range based on the current spindle speed; if the measured yarn tension is too low, the control command generation unit 160 increases the spindle speed by the correction range based on the current spindle speed; if the measured yarn tension is acceptable, the control command generation unit 160 does not change the spindle speed independently based on the measured yarn tension.

[0062] The spindle speed correction command is executed by the execution unit 170 according to the existing acceleration / deceleration ramp of the spindle inverter. This acceleration / deceleration ramp limits the rate of change of the spindle speed between adjacent control cycles, preventing sudden changes in spindle speed from causing new traction anomalies. If the spindle speed correction command conflicts with the spindle inverter protection limit, the execution unit 170 executes the command with the spindle inverter protection limit as the boundary and feeds back the actual spindle speed to the controller.

[0063] When the bulging trend determination result indicates that the imbalance in the gas ring space is intensifying, the control command generation unit 160 generates a short-term deceleration command for the ring rail. The execution target of the short-term deceleration command is the current reciprocating speed of the ring rail. When reducing the current reciprocating speed of the ring rail, the controller maintains the original direction of movement and the end point of the stroke of the ring rail unchanged, does not move the ring rail in the opposite direction, and does not change the upper and lower positions specified by the ring rail's lifting curve.

[0064] The original direction of movement and stroke endpoints of the ring rail are determined based on the ring rail's rise and fall curve. If the ring rail's rise and fall curve indicates that the ring rail is in an upward movement during the current control cycle, a short-term deceleration command will cause the ring rail to continue moving upward but reduce its current reciprocating speed. If the ring rail's rise and fall curve indicates that the ring rail is in a downward movement during the current control cycle, a short-term deceleration command will cause the ring rail to continue moving downward but reduce its current reciprocating speed. Regardless of whether it is in an upward or downward movement, the ring rail will not exceed the stroke endpoints specified by the ring rail's rise and fall curve.

[0065] The reduction range of the ring rail's current reciprocating speed is given during batch initialization by the blended yarn spinning batch process or the existing speed correction parameters of the ring rail driver. When the bulging trend determination result indicates that the air ring space imbalance is intensifying, the control command generation unit 160 generates a short-term deceleration command for the ring rail according to the reduction range, causing the current reciprocating speed of the ring rail to decrease once within the current control cycle; if the bulging trend determination result of the next control cycle still indicates that the air ring space imbalance is intensifying, the same reduction range will continue to be executed, but the current reciprocating speed of the ring rail must not be lower than the minimum value of the current reciprocating speed of the ring rail specified by the ring rail rise and fall curve or the protection parameters of the ring rail driver.

[0066] When the bulging trend determination result indicates that the imbalance in the gas ring space will no longer worsen, the control command generation unit 160 restores the current reciprocating speed of the ring rail according to the ring rail lifting and lowering curve. The restoration process is executed by the existing acceleration and deceleration ramps of the ring rail driver, so that the current reciprocating speed of the ring rail gradually returns to the speed corresponding to the ring rail lifting and lowering curve; during the restoration process, the original direction of motion and the end point of the stroke of the ring rail remain unchanged.

[0067] Once the absolute value of the ring bulge torque stops increasing, the control command generation unit 160 restores the current reciprocating speed of the ring rail according to the ring rail lifting curve. The condition for restoring the current reciprocating speed of the ring rail does not solely rely on the measured yarn tension, but is based on the premise that the absolute value of the ring bulge torque no longer increases. If the measured yarn tension is already within the process allowable range, but the absolute value of the ring bulge torque is still increasing, then the current reciprocating speed of the ring rail continues to maintain its reduced execution state until the bulge trend determination result indicates that the ring space imbalance is no longer worsening.

[0068] The execution unit 170 is used to execute spindle speed correction commands and ring plate short-time deceleration commands. In one possible embodiment, the execution unit 170 may include a spindle frequency converter and a ring plate driver. The spindle frequency converter adjusts the spindle speed according to the spindle speed correction command, and the ring plate driver reduces the current reciprocating speed of the ring plate according to the short-time deceleration command. After execution by the execution unit 170, the spindle speed and the current reciprocating speed of the ring plate act back on the ring spinning actuator 100, thereby forming... Figure 1 The control closed loop shown.

[0069] During spindle speed correction, the controller acquires the front roller yarn exit speed and spindle speed, and checks the established twist relationship against these parameters. Both the front roller yarn exit speed and spindle speed are obtained from field feedback and are not estimated by the controller. This check confirms that the spindle speed correction has not caused the relationship between draft output and twist input to deviate from the batch process of blended yarn spinning. If the check results show that the established twist relationship cannot be maintained, the controller can enter the continuous anomaly handling procedure.

[0070] When verifying the established twist relationship based on the front roller yarn exit speed and spindle speed, the controller uses the established twist relationship stored in the blended yarn spinning batch process as a benchmark to compare whether the front roller yarn exit speed and spindle speed in the current control cycle still correspond to the established twist relationship. If, after spindle speed correction, the relationship between the front roller yarn exit speed and spindle speed in the current control cycle exceeds the allowable deviation range of the blended yarn spinning batch process, the controller will not continue to expand the spindle speed correction command, but will instead treat it as a continuous anomaly.

[0071] The status output unit 180 responds to the dynamic balance status output command and outputs the dynamic balance status. When the measured yarn tension is within the process allowable range and the absolute value of the balloon eccentricity torque no longer increases, the control command generation unit 160 generates the dynamic balance status output command. After the status output unit 180 outputs the dynamic balance status, the ring spinning actuator 100 continues drafting, twisting, and winding. The dynamic balance status is an output of the current yarn forming process control status, not an isolated display of a single intermediate variable.

[0072] The anomaly handling unit 190 is used to execute the command to stop the corresponding spindle position and issue an alarm. When the measured yarn tension fails, the balloon profile cannot be continuously extracted, or the measured yarn tension still does not return to the process allowable range after reaching the preset correction number and the absolute value of the balloon deflection torque in the current control cycle is still increasing relative to the absolute value of the balloon deflection torque in the previous control cycle, the control command generation unit 160 generates a command to stop the corresponding spindle position and issue an alarm. The anomaly handling unit 190 responds to the command, causing the corresponding spindle position of the ring spinning actuator 100 to stop and output an alarm.

[0073] Further, the implementation methods for exception handling and re-execution are as follows: When the measured yarn tension fails, the controller stops the corresponding spindle position and issues an alarm. The failure to measure yarn tension can manifest as the disappearance of the measured yarn tension signal, the measured yarn tension remaining at an invalid value for an extended period, the measured yarn tension exceeding the equipment's protection range, or the yarn tension acquisition unit 110 failing to output a comparable measured yarn tension. Since the measured yarn tension is used to determine both the yarn tension status and the cylinder bulging torque, a failure to measure yarn tension will cause both the spindle speed correction direction and the cylinder bulging torque to lose reliable input; therefore, the controller will not continue executing closed-loop control.

[0074] When the gas ring profile cannot be extracted continuously, the controller stops the corresponding spindle position and issues an alarm, and does not use estimated values ​​to replace the gas ring's widest radius, widest point height, and total height. This processing corresponds to the situation where the space quantity reading unit 130 cannot reliably read the space quantity from the gas ring side view. If estimated values ​​are still used to replace the gas ring's widest radius, widest point height, and total height when the gas ring profile cannot be extracted continuously, the bulging discrimination unit 140 will generate a gas ring bulging torque based on off-site measured data, which may cause the control command generation unit 160 to generate erroneous control actions.

[0075] If, after reaching the preset correction count, the measured yarn tension still has not returned to the allowable range, and the absolute value of the ring bulge torque in the current control cycle is still increasing compared to the absolute value of the ring bulge torque in the previous control cycle, the controller will stop the corresponding spindle position and issue an alarm. The preset correction count can be set based on equipment protection strategies, process cycle time, or existing alarm rules of the controller. This preset correction count is only used to limit the continuous correction process, preventing the system from repeatedly outputting spindle speed correction commands or short-term deceleration commands for the ring rail when recovery is impossible.

[0076] The preset correction count is executed on a per-spindle-position basis. Whenever the control command generation unit 160 outputs a spindle speed correction command or a short-term deceleration command for the ring rail due to high or low yarn tension or worsening ring space imbalance, the controller increments the correction count for the corresponding spindle position. When the measured yarn tension returns to the process allowable range and the absolute value of the ring bulge torque no longer increases, the controller clears the correction count for the corresponding spindle position. After reaching the preset correction count, if the measured yarn tension still has not returned to the process allowable range and the absolute value of the ring bulge torque in the current control cycle is still increasing compared to the absolute value of the ring bulge torque in the previous control cycle, the anomaly handling unit 190 stops the corresponding spindle position and issues an alarm.

[0077] After stopping the corresponding spindle and triggering an alarm, the operator can perform reconnection, clean the viewing window, check the backlight, check the camera field of view, check the measured yarn tension acquisition unit 110, or troubleshoot mechanical faults. After resuming the acquisition of the balloon side view or the continuous extraction of the balloon contour, the controller re-executes the steps of establishing the ring spinning path and completing calibration. During re-execution, the controller reloads the set yarn tension, front roller yarn exit speed, the predetermined curve used to control the spindle speed, and the ring rail lifting curve, and reconfirms that the measured yarn tension acquisition and balloon side view acquisition are both in a valid state.

[0078] The fault handling unit 190 is connected to the ring spinning actuator 100 and can send a command to stop the corresponding spindle position and trigger an alarm back to the field object. Alarms can be triggered via audible and visual alarms, control interface prompts, equipment logs, or production management system records.

[0079] As an optional implementation, the ring spinning actuator 100 operates stably according to the blended yarn spinning batch process. The measured yarn tension acquired by the yarn tension acquisition unit 110 is within the process allowable range. The side view acquired by the side view image acquisition unit 120 can form a continuous air ring outline. The space quantity reading unit 130 reads the widest radius, the height of the widest point, and the total height of the air ring from the same frame of air ring outline. After the eccentricity discrimination unit 140 generates the air ring eccentricity torque, the absolute value of the air ring eccentricity torque in the current control cycle is less than or equal to the absolute value of the air ring eccentricity torque in the previous control cycle. At this time, the control command generation unit 160 generates a dynamic balance state output command, the state output unit 180 outputs the dynamic balance state, and the execution unit 170 maintains the existing spindle speed and the current reciprocating speed of the ring rail.

[0080] As an optional implementation, if the measured yarn tension remains within the allowable range, the measured yarn tension state determination unit 150 generates a measured yarn tension state determination result indicating that the measured yarn tension is qualified. However, due to an increase in the widest radius of the air ring or a shift in the height of the widest point relative to the center of the total air ring height, the absolute value of the air ring bulging torque calculated by the bulging discrimination unit 140 for the current control cycle is greater than the absolute value of the air ring bulging torque for the previous control cycle. The bulging trend determination result indicates that the air ring space imbalance is intensifying. At this time, the control command generation unit 160 does not change the spindle speed independently based on the measured yarn tension, but instead generates a short-term deceleration command for the ring rail, causing the execution unit 170 to reduce the current reciprocating speed of the ring rail. At this time, the short-term deceleration command for the ring rail is executed according to the reduction range of the current reciprocating speed of the ring rail saved during batch initialization. After the execution unit 170 reduces the current reciprocating speed of the ring rail, the controller re-acquires the measured yarn tension, the widest radius of the air ring, the height of the widest point, and the total height of the air ring in the next control cycle, and re-compares the absolute value of the air ring bulging torque of the current control cycle with that of the previous control cycle. If the bulging trend determination result indicates that the air ring space imbalance is no longer aggravated, the current reciprocating speed of the ring rail is restored according to the ring rail lifting curve; if the bulging trend determination result still indicates that the air ring space imbalance is aggravated, the short-term deceleration command of the ring rail continues to be executed without exceeding the protection parameters of the ring rail driver.

[0081] As an optional implementation, the measured yarn tension acquired by the yarn tension acquisition unit 110 is higher than the upper limit of the process allowable band. The measured yarn tension state determination unit 150 generates a measured yarn tension state determination result indicating that the measured yarn tension is too high. The control command generation unit 160 generates a spindle speed correction command to reduce the spindle speed based on a predetermined curve used to control the spindle speed, and the execution unit 170 reduces the spindle speed. If the bulging trend determination result also indicates that the imbalance of the air ring space is intensifying, the control command generation unit 160 also generates a short-term deceleration command for the ring rail, causing the execution unit 170 to reduce the current reciprocating speed of the ring rail.

[0082] As an optional implementation, the measured yarn tension acquired by the yarn tension acquisition unit 110 is lower than the lower limit of the process allowable band. The measured yarn tension state determination unit 150 generates a measured yarn tension state determination result indicating that the measured yarn tension is too low. The control command generation unit 160 generates a spindle speed correction command to increase the spindle speed based on a predetermined curve used to control the spindle speed, and the execution unit 170 increases the spindle speed. If the absolute value of the ring deflection torque in the current control cycle is still increasing compared to the absolute value of the ring deflection torque in the previous control cycle, the execution unit 170 simultaneously reduces the current reciprocating speed of the ring rail.

[0083] As an optional implementation, although the side view image acquisition unit 120 acquires the side view of the air ring, the space quantity reading unit 130 cannot reliably read the widest radius, the height of the widest point, and the total height of the air ring from the side view. In this case, the controller does not use estimated values ​​to replace the widest radius, the height of the widest point, and the total height of the air ring, and the slack detection unit 140 does not generate the air ring slack tension for closed-loop control. The control command generation unit 160 generates a command to stop the corresponding spindle position and trigger an alarm, and the exception handling unit 190 executes the command to stop the corresponding spindle position and trigger an alarm. After resuming the acquisition of the air ring side view or resuming the continuous extraction of the air ring contour, the controller re-executes the steps of establishing the ring spinning path and completing the calibration.

[0084] In one optional implementation, the controller has repeatedly adjusted the spindle speed based on the measured yarn tension status, and reduced the current reciprocating speed of the ring plate when the bulging trend indicates that the imbalance in the air ring space is worsening. However, after reaching the preset number of adjustments, the measured yarn tension still has not returned to the process allowable range, and the absolute value of the air ring bulging torque in the current control cycle is still increasing compared to the absolute value of the air ring bulging torque in the previous control cycle. Continuing to adjust at this point may not restore the controllable state of the ring spinning process for blended colored yarn, therefore the anomaly handling unit 190 stops the corresponding spindle position and issues an alarm.

[0085] It should be noted that the yarn tension acquisition unit 110 in this embodiment can use an existing yarn guide plate force sensor or an equivalent tension device. The side view image acquisition unit 120 can use a camera and a backlight. The camera faces the plane where the yarn loop is located, and the backlight is used to make the outline of the loop clearly visible in the side view of the loop.

[0086] It should be noted that the execution unit 170 can employ a spindle frequency converter and a ring rail drive. The spindle frequency converter reduces or increases the spindle speed according to the spindle speed correction command. The ring rail drive reduces the current reciprocating speed of the ring rail according to the short-term deceleration command, and restores the current reciprocating speed of the ring rail according to the ring rail rise and fall curve after the absolute value of the gas ring eccentricity torque no longer increases. The acceleration / deceleration ramps, maximum acceleration limits, and drive protection limits of the execution unit 170 can be reused from the existing equipment configuration.

[0087] It should be noted that the status output unit 180 can output the dynamic balance status through the control interface, equipment status register, or production management system. The anomaly handling unit 190 can execute commands to stop the corresponding spindle and trigger an alarm through audible and visual alarms, control interface prompts, equipment logs, or production management system records.

[0088] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A method for dynamic balance control of spinning tension in blended colored yarn, applicable to the ring spinning process of blended colored yarn, characterized in that, include: Within the same control cycle, the yarn tension, the widest radius of the air ring, the height of the widest point, and the total height of the air ring are obtained and measured. The measured yarn tension is used to generate a determination result for the yarn tension state based on the process allowable zone corresponding to the measured yarn tension and the set yarn tension. Based on the measured yarn tension, the widest radius of the air ring, the height of the widest point, and the total height of the air ring, an air ring bulging moment is generated. The air ring bulging moment varies with the measured yarn tension and the widest radius of the air ring, and its direction is determined by the position of the height of the widest point relative to the middle of the total height of the air ring. It is used to characterize the degree of spatial asymmetry formed by the radial outward bulging and axial offset of the yarn air ring. Compare the absolute values ​​of the gas bulge torque in the current control cycle and the previous control cycle to generate a bulge trend determination result; The spindle speed is adjusted based on the measured yarn tension condition. When the bulging trend indicates that the imbalance in the air ring space is worsening, reduce the current reciprocating speed of the steel ring plate. When the measured yarn tension is within the process allowable range and the absolute value of the balloon bulge tension no longer increases, the output dynamic equilibrium state is reached. When the measured yarn tension fails, the balloon profile cannot be continuously extracted, or the measured yarn tension still fails to return to the process allowable range after reaching the preset correction number, and the absolute value of the balloon bulging torque in the current control cycle is still increasing relative to the absolute value of the balloon bulging torque in the previous control cycle, the corresponding spindle position is stopped and an alarm is triggered.

2. The method for dynamic balance control of spinning tension in blended colored yarn according to claim 1, characterized in that, Before acquiring the measured yarn tension, maximum radius of the balloon, maximum height of the balloon, and total height of the balloon, the set yarn tension, front roller output speed, predetermined curve for controlling spindle speed, and ring rail lifting curve are written into the controller. When the measured yarn tension is determined to be too high or too low, the spindle speed is corrected based on the predetermined curve for controlling spindle speed. The original movement direction and stroke endpoint of the ring rail are determined according to the ring rail lifting curve, and the current reciprocating speed of the ring rail is restored according to the ring rail lifting curve after the absolute value of the balloon bulging torque no longer increases. During the spindle speed correction, the front roller output speed and spindle speed are acquired, and the predetermined twist relationship is checked based on the front roller output speed and spindle speed.

3. The method for dynamic balance control of spinning tension in blended colored yarn according to claim 1, characterized in that, The side view of the gas ring is captured by a camera and backlight facing the plane where the gas ring is located. The field of view of the side view of the gas ring covers the ring plane to the yarn guide hook, and the widest radius, the height of the widest point, and the total height of the gas ring are read from the same frame of the gas ring outline.

4. The method for dynamic balance control of spinning tension in blended colored yarn according to claim 1, characterized in that, The generation of the balloon bulge tension includes: determining the radial outward bulge contribution of the yarn balloon based on the widest radius of the balloon; determining the axial offset direction of the yarn balloon based on the position of the widest point height relative to the middle of the total height of the balloon; determining the degree of mechanical action based on the measured yarn tension; and using the balloon bulge tension to distinguish different yarn balloon postures under the same measured yarn tension.

5. The method for dynamic balance control of spinning tension in blended colored yarn according to claim 1, characterized in that, The results of the measured yarn tension status are as follows: when the measured yarn tension is higher than the upper limit of the process allowable zone, the measured yarn tension is considered too high; when the measured yarn tension is lower than the lower limit of the process allowable zone, the measured yarn tension is considered too low; and when the measured yarn tension is within the process allowable zone, the measured yarn tension is considered qualified.

6. The method for dynamic balance control of spinning tension in blended colored yarn according to claim 1, characterized in that, The spindle speed is adjusted based on the measured yarn tension condition results, including: reducing the spindle speed when the measured yarn tension is too high, increasing the spindle speed when the measured yarn tension is too low, and not changing the spindle speed when the measured yarn tension is within acceptable limits.

7. The method for dynamic balance control of spinning tension in blended colored yarn according to claim 1, characterized in that, When the ring profile cannot be continuously extracted, the controller stops the corresponding spindle position and alarms; after the ring side view acquisition is restored or the ring profile is continuously extracted, the steps of establishing the ring spinning path and completing the calibration are re-executed.

8. A dynamic balance control system for spinning tension of blended colored yarn, characterized in that, include: The yarn tension acquisition unit is used to acquire the measured yarn tension. Side view image acquisition unit, used to acquire side view of the atmosphere; The spatial measurement unit is used to read the widest radius, the height of the widest point, and the total height of the air sphere from the side view of the air sphere. The bulging discrimination unit is used to generate the bulging torque of the air ring based on the measured yarn tension, the widest radius of the air ring, the height of the widest point, and the total height of the air ring, and to compare the absolute values ​​of the bulging torque of the air ring in the current control cycle and the previous control cycle to generate the bulging trend judgment result. The measured yarn tension state determination unit is used to generate the measured yarn tension state determination result based on the measured yarn tension, the set yarn tension, and the process allowable range; The control command generation unit is used to generate a spindle speed correction command to reduce the spindle speed when the measured yarn tension is too high, to generate a spindle speed correction command to increase the spindle speed when the measured yarn tension is too low, to generate a short-term deceleration command for the ring rail when the bulging trend judgment result indicates that the imbalance of the air ring space is intensifying, to generate a dynamic balance state output command when the measured yarn tension is within the process allowable zone and the absolute value of the air ring bulging torque no longer increases, and to generate a command to stop the corresponding spindle position and trigger an alarm when the measured yarn tension fails, the air ring profile cannot be continuously extracted, or the measured yarn tension still has not returned to the process allowable zone after reaching the preset correction number and the absolute value of the air ring bulging torque in the current control cycle is still increasing relative to the absolute value of the air ring bulging torque in the previous control cycle. The execution unit is used to execute the spindle speed correction command and the short-time deceleration command of the ring rail. The status output unit is used to respond to the dynamic equilibrium status output command and output the dynamic equilibrium status. The exception handling unit is used to execute commands to stop the corresponding spindle position and trigger an alarm.

9. A control device, characterized in that, It includes a processor and a memory, wherein the memory stores a program that, when executed by the processor, implements the dynamic balance control method for spinning tension of blended colored yarn as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The device stores a program that, when executed by a control device, implements the dynamic balance control method for spinning tension of blended colored yarn as described in any one of claims 1 to 7.

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