Dynamic tension control method of dry-method winding and unwinding system

Through the fuzzy adaptive PID control method, combined with online identification and genetic algorithm optimization, the nonlinear fluctuation problem of tension control in the dry winding manufacturing system of composite materials was solved, high-precision dynamic tension control was achieved, and the interface bonding quality and fiber orientation accuracy of the components were improved.

CN120622201APending Publication Date: 2025-09-12HARBIN COMPOSITE EQUIP
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Patent Information

Application Number
CN202511003771.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-21
Publication Date
2025-09-12

AI Technical Summary

Technical Problem

In the existing technology, the dry winding manufacturing system of composite materials has high tension overshoot under high-speed reversing conditions, long winding diameter sudden change adjustment time, and large steady-state fluctuations during low-speed operation, resulting in uneven fiber arrangement, uneven resin infiltration and interlayer bubble defects, affecting the fatigue life and mechanical properties of the components.

Method used

The fuzzy adaptive PID control method is adopted to construct a fuzzy PID controller by online identification of the total moment of inertia and friction torque. The fuzzy rule base is optimized with the genetic algorithm to realize dynamic tension control. The rotational inertia feedforward compensation and friction torque compensation are integrated to generate the final control variable.

Benefits of technology

It significantly improves the overshoot suppression capability under high-speed conditions, improves the steady-state accuracy of low-speed operation, solves the inertia and friction disturbance problems caused by changes in winding diameter, and improves the accuracy and stability of tension control.

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Abstract

The invention discloses a dynamic tension control method for a dry-method winding and unwinding system, solves the problems of high overshoot, long coil diameter sudden change adjustment time and large steady-state fluctuation in low-speed operation of the dry-method winding and unwinding system under a high-speed reversing working condition, and belongs to the technical field of composite material equipment development. The method comprises the steps of collecting data of a winding and unwinding system, identifying total rotational inertia and friction torque on line according to the data, obtaining a friction compensation item according to the friction torque, and obtaining a rotational inertia feed-forward item according to the total rotational inertia; the method comprises the following steps of S1, inputting the tension error and the tension error change rate of the winding and unwinding system into a fuzzy PID controller to obtain a PID parameter real-time adjustment amount, updating a PID parameter, and then obtaining a PID feedback control amount at the current moment k by using the PID controller and the tension error, and S3, synthesizing a friction force compensation item, a rotational inertia feed-forward item and the PID feedback control amount into a final control amount of the winding and unwinding system.
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