PID fuzzy control optimization method used for power rewinding and unwinding

Abstract

The invention discloses a PID fuzzy control optimization method used for power rewinding and unwinding. A parameter self-tuning fuzzy PID controller takes an error e and an error change rate ec as fuzzy rules. Fuzzy logic reasoning is used to automatically adjust the parameter of the PID controller, and the adjusted PID controller parameter is used as an output control parameter. A rolling diameter calculation fluctuation caused by occasional system instability in a rolling diameter calculation process during full or empty rolling can be effectively restrained. Through the real-time monitoringof a set tension value and an output tension value, the fuzzy PID controller can dynamically adapt to a rolling diameter change in the system during rewinding and unwinding processes. A parameter self-tuning fuzzy PID control algorithm is applied to a tension controller, and a control parameter is adjusted according to a rolling diameter size or an operation frequency or an operation speed. The system can be operated stably, and rolling diameter calculation is accurate. System oscillation caused by the poor control effect of traditional PID during full or empty rolling in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of tension controller control, and in particular relates to a PID fuzzy control optimization method for power winding and unwinding. Background technique [0002] Because in the process of rewinding and unwinding, the diameter of the rewinding and unwinding coil changes with time. When the coil diameter is large or the material density of the coil is high, the moment of inertia calculated on the motor shaft is large, which will cause This will lead to unstable tension of the system, causing deviation of the material on the roll, loose sleeve, broken belt and other phenomena. At present, the built-in PID control algorithm of the tension controller is a traditional PID control method. Although there are two sets of PID parameters, and the control parameters are fixed and switched according to the coil diameter, deviation, line speed or operating frequency, the control effect of the entire tension control syste...

AI Technical Summary

Problems solved by technology

[0002] Because in the process of rewinding and unwinding, the diameter of the rewinding and unwinding coil changes with time. When the coil diameter is large or the material density of the coil is high, the moment of inertia calculated on the motor shaft is large, which will cause The tension of the system is unstable, causing the material on the roll to deviate, loose sleeves, and broken belts, etc.

At present, the built-in PID control algorithm of the tension controller is a traditional PID control method. Although there are two sets of PID parameters, and the control parameters are fixed and switched according to the coil diameter, deviation, line speed or operating frequency, the control effect of the entire tension control system is not Very good, because the roll diameter changes from time to time in the entire tension system, so the traditional PID controller is difficult to suppress the traditional PID due to the calculation error of the roll diameter or the roll diameter between the empty roll and the full roll during the winding and unwinding process. The adjustment ability of the pendulum is affected, causing the position of the pendulum to be unstable, resulting in poor control effect

Images