渔网机张力控制技术研究

Research on tension control technology of warp netting machine

针对渔网机张力控制系统参数整定难、抗干扰能力弱等问题,采用模糊PID控制方法,对张力控制系统的多变量、非线性、时滞性等方面进行了研究,分析了渔网机经线张力数学模型以及张力波动的主要影响因素。将常规PID控制与模糊控制相结合,确定了模糊控制中的隶属度函数、模糊控制规则表,在Simulink模块中对常规PID控制以及模糊PID控制分别建立了仿真模型进行仿真实验,最后将该控制方法运用到收放卷平台样机上,测试了系统的性能。实验结果表明:该控制方法可有效提高系统响应速度、抗干扰性与稳定性,可实现渔网机经线张力的稳定控制。

Aiming at the difficulties in parameter setting and weak anti-interference ability in tension control system of warp netting machine, a fuzzy PID control method was applied.The multivariable,nonlinear and time-delay aspects of tension control system were researched.The mathematical model of the warp tension of warp netting machine and the main influencing factors of the tension fluctuation were analyzed.After the membership function and fuzzy control rule table were determined,the conventional PID control and fuzzy control were combined effectively,and the simulations of which were established by Matlab Simulink module.Finally,this control method was applied to winding and unwinding system for testing the function of this control system.The experimental result shows that the method which was based on the fuzzy PID control can improve the response speed and anti-interference of the tension control system,and the steady state can be rapidly restored after being disturbed so as to realize the stable control of the warp netting machine.