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CN-122009885-A - Progressive winding control method for dynamic display of cloth storage quantity

CN122009885ACN 122009885 ACN122009885 ACN 122009885ACN-122009885-A

Abstract

The invention relates to a progressive rolling control method for dynamic display of cloth storage quantity, which belongs to the technical field of control of coiled material continuous production equipment and comprises a frame, a cloth storage quantity detection device, an unreeling unit, a rolling unit and a control unit, wherein the unreeling unit and the rolling unit are both arranged on the frame, the cloth storage quantity detection device comprises a guide roller bracket, a group of floating rollers capable of moving up and down and a pull rope encoder, the guide roller bracket is provided with a linear guide rail, the floating rollers are in sliding fit with the linear guide rail and are connected with pull ropes of the pull rope encoder, and the pull rope encoder detects the real-time position H of the floating rollers. In the invention, a progressive PID control algorithm is adopted, a nonlinear function is introduced to dynamically adjust the differential action intensity, differential is weakened when the deviation is larger so as to avoid overshoot oscillation, differential is enhanced when the deviation is smaller so as to improve the response speed, and the control performance is optimized through adjustable parameters, so that more accurate winding speed compensation is realized, material tension fluctuation is reduced, and winding quality and smoothness are improved.

Inventors

  • WANG AICUN

Assignees

  • 江苏高崎机械有限公司

Dates

Publication Date
20260512
Application Date
20251219

Claims (7)

  1. 1. The progressive winding control method for dynamically displaying the cloth storage quantity is characterized by comprising the following steps of: s1, detecting the unreeling speed V1, the reeling speed V2 and the real-time position H of a floating roller in a cloth storage amount detection device in real time; s2, calculating the current cloth storage quantity L_current and the residual cloth storage quantity L_remaining according to the real-time position H of the floating roller, and dynamically and graphically displaying the cloth storage quantity information on a user interface; S3, setting a target value L_target of the cloth storage quantity, and comparing the target value L_target with the current cloth storage quantity L_current to obtain a cloth storage quantity deviation e and a change rate thereof; S4, calculating a speed compensation value delta V of the winding motor by adopting a progressive PID control algorithm according to the cloth storage quantity deviation e and the change rate thereof; The progressive PID control algorithm introduces a nonlinear function related to the absolute value of the deviation The differential action intensity of the controller is dynamically adjusted; the nonlinear function is in the form of: wherein And Is an adjustable parameter; and S5, superposing the speed compensation value delta V on the reference speed V_base of the winding motor calculated in real time according to the winding diameter, and outputting a final control signal to drive the winding motor to operate.
  2. 2. The method for controlling the dynamic display of the cloth storage amount according to claim 1, wherein the dynamic graphical display in the step S2 at least comprises displaying the current cloth storage amount in percentage or length units, visually displaying the filling degree of the cloth storage amount detecting device by using a progress bar, and performing color change or sounding and lighting alarm when the cloth storage amount approaches a limit.
  3. 3. The progressive winding control method for dynamic display of cloth storage amount according to claim 1, wherein the control law of the progressive PID control algorithm is as follows: ; Wherein Kp is a proportionality coefficient, kd is a differential coefficient, e (k) is a cloth storage quantity deviation at the current sampling moment, and e (k-1) is a cloth storage quantity deviation at the last sampling moment.
  4. 4. The method for controlling the incremental rolling of the cloth storage amount according to claim 1, wherein in the step S5, the reference speed v_base of the rolling motor is calculated by estimating the current rolling diameter d_current by accumulating the number of rolling turns, and calculating according to the formula v_base=v1×d_current/d_core, wherein d_core is the rolling core diameter, and V1 is the unwinding speed.
  5. 5. A progressive winding control system for realizing the progressive winding control method for dynamically displaying the cloth storage according to any one of claims 1-4, comprising a frame (1), a cloth storage detection device (2), an unreeling unit (3), a winding unit (4) and a control unit (5), wherein the unreeling unit (3) and the winding unit (4) are both arranged on the frame (1); The cloth storage amount detection device (2) comprises a guide roller bracket (201), a group of floating roller groups (202) capable of moving up and down and a stay rope encoder (204); the guide roller support (201) is provided with a linear guide rail (203), the floating roller set (202) is in sliding fit with the linear guide rail (203) and is connected with a pull rope of the pull rope encoder (204), and the pull rope encoder (204) detects the real-time position H of the floating roller set (202); The unreeling unit (3) comprises an unreeling shaft (301), an unreeling motor (302) and a first rotary encoder (303), wherein the unreeling shaft (301) is arranged on a box body of the unreeling unit (3) through a bearing seat, the unreeling motor (302) drives the unreeling shaft (301) through an unreeling driver, and the first rotary encoder (303) is arranged on the unreeling shaft (301) and used for detecting unreeling speed V1; The winding unit (4) comprises a winding shaft (401), a winding motor (402) and a second rotary encoder (403), wherein the winding shaft (401) is arranged on a box body of the winding unit (4) through a bearing, the winding motor (402) is a servo motor, and the winding shaft (401) is driven by a winding servo driver, and the second rotary encoder (403) is arranged on the winding shaft (401) and is used for detecting winding speed V2; The control unit (5) comprises a programmable logic controller (501) and an industrial touch screen (502), wherein the signal input end of the programmable logic controller (501) is respectively and electrically connected with the first rotary encoder (303), the second rotary encoder (403) and the stay cord encoder (204), the industrial touch screen (502) is in communication connection with the programmable logic controller (501), and the control output end of the programmable logic controller (501) is connected with a servo driver of the winding motor (402).
  6. 6. The progressive winding control system for dynamic display of cloth storage according to claim 5, wherein the floating roller set (202) is a roller set arranged in parallel, and mechanical limiting blocks for limiting the upper limit and the lower limit of the travel of the floating roller set (202) are arranged on the motion path of the floating roller set and are in sliding connection with the linear guide rail (203) through the mechanical limiting blocks.
  7. 7. The progressive winding control system for dynamic display of cloth storage according to claim 5, wherein the first rotary encoder (303), the second rotary encoder (403) and the pull rope encoder (204) are in signal connection with an input port of a programmable logic controller (501) through a high-speed counter module or a field bus, and the programmable logic controller (501) is connected with a servo driver of a winding motor (402) through a pulse direction interface or an industrial real-time ethernet.

Description

Progressive winding control method for dynamic display of cloth storage quantity Technical Field The invention relates to the technical field of control of coiled material continuous production equipment, in particular to a progressive rolling control method for dynamic display of cloth storage quantity. Background On a coiled material continuous production line, an unreeling-cloth storage-reeling system is a key for ensuring continuous production, and a cloth storage amount detection device (such as a cloth storage rack and a floating roller) has the core function of buffering speed difference and tension fluctuation between unreeling and reeling units under the condition of no shutdown. The prior art scheme has obvious defects, for example, patent document CN201621335070.3 discloses a progressive cloth storage winding machine which realizes cloth storage and winding through a mechanical structure and a travel switch, however, the scheme has the following defects that 1, the cloth storage quantity cannot be accurately displayed in real time, only limit position protection can be carried out, an operator cannot master an intermediate state and is difficult to carry out preventive adjustment, 2, the control strategy is simple, the intelligent degree is low, and tension fluctuation caused by winding diameter change cannot be dealt with. The other common scheme is to adopt constant tension or constant speed control, the constant tension control depends on an expensive tension sensor, and has the problem of response lag in a high-speed system, the constant speed control cannot adapt to the change of the winding diameter, the unstable material tension and uneven winding are easily caused, the phenomena of internal tightness, external looseness and the like are easily caused, although the PID or self-adaptive control scheme is adopted, the problems of easy oscillation and unsmooth adjustment near a balance point are commonly existed, and the real-time dynamic visual monitoring of the cloth storage amount is not organically combined with progressive smooth control. In addition, the known warehouse storage monitoring technology (such as granary capacity monitoring) aims at static warehouse storage, and the measurement mode and response speed of the warehouse storage monitoring technology cannot meet the requirements of rapid dynamic change and accurate control of the storage capacity in high-speed continuous production. Therefore, the prior art fails to solve the comprehensive technical problems of real-time accurate monitoring, intelligent smooth control and effective early warning, resulting in poor tension fluctuation and winding quality and insufficient automation degree, and therefore, the progressive winding control method for dynamically displaying the cloth storage quantity is provided, and the technical problems of monitoring blind areas, control oscillation, speed mismatch and poor system reliability in the prior art are successfully solved by deeply fusing dynamic visual monitoring of the cloth storage quantity with an intelligent progressive control algorithm and a high-precision electromechanical integrated system design, and finally high-quality, efficient, safe and stable operation of the coil winding process is realized. Disclosure of Invention The invention provides a progressive rolling control method for dynamic display of cloth storage quantity, which solves the problems of opaque cloth storage quantity state monitoring, simple control strategy, poor adaptability, mismatching of linear speed caused by change of a rolling diameter and insufficient system integration level and reliability existing in the existing coiled material continuous production equipment. The technical scheme for solving the technical problems is that the progressive rolling control method for dynamically displaying the cloth storage quantity comprises the following steps: s1, detecting the unreeling speed V1, the reeling speed V2 and the real-time position H of a floating roller in a cloth storage amount detection device in real time; s2, calculating the current cloth storage quantity L_current and the residual cloth storage quantity L_remaining according to the real-time position H of the floating roller, and dynamically and graphically displaying the cloth storage quantity information on a user interface; S3, setting a target value L_target of the cloth storage quantity, and comparing the target value L_target with the current cloth storage quantity L_current to obtain a cloth storage quantity deviation e and a change rate thereof; S4, calculating a speed compensation value delta V of the winding motor by adopting a progressive PID control algorithm according to the cloth storage quantity deviation e and the change rate thereof; The progressive PID control algorithm introduces a nonlinear function related to the absolute value of the deviation The differential action intensity of the controller is dynamically adjusted; th