王利栋, 王政. 模糊神经网络PID在提升机恒减速系统中的应用研究[J]. 中国矿业, 2021, 30(3): 118-122. DOI: 10.12075/j.issn.1004-4051.2021.03.003
    引用本文: 王利栋, 王政. 模糊神经网络PID在提升机恒减速系统中的应用研究[J]. 中国矿业, 2021, 30(3): 118-122. DOI: 10.12075/j.issn.1004-4051.2021.03.003
    WANG Lidong, WANG Zheng. Research of fuzzy neural network PID in hoist constant deceleration system[J]. CHINA MINING MAGAZINE, 2021, 30(3): 118-122. DOI: 10.12075/j.issn.1004-4051.2021.03.003
    Citation: WANG Lidong, WANG Zheng. Research of fuzzy neural network PID in hoist constant deceleration system[J]. CHINA MINING MAGAZINE, 2021, 30(3): 118-122. DOI: 10.12075/j.issn.1004-4051.2021.03.003

    模糊神经网络PID在提升机恒减速系统中的应用研究

    Research of fuzzy neural network PID in hoist constant deceleration system

    • 摘要: 针对煤矿提升机恒减速系统现存在的问题,如超调量大,控制精度不高,响应时间不理想等,本文提出了一种将模糊PID控制与BP神经网络相融合的提升机恒减速度控制方法。该方法将提升机减速度误差与减速度误差变化率作为输入,将PID的参数变化量ΔKpΔKiΔKd作为网络的输出,利用所构建的神经网络拓扑层结构和事先准备好的训练集数据,不断迭代优化隶属度函数和模糊规则的权值和阈值,以提高对提升机恒减速系统PID值的修整精度,从而得到训练好的反映输入与输出关系的离线赋值表,接着将该表写入到PLC的全局数据块中并以二维数组的方式存储,最终通过程序调用得到最佳的PID三个参数的值,从而实现对恒减速度实时性与精准性的控制,并在MATLAB中进行仿真,同时与其他算法进行对比。结果表明,模糊神经网络PID控制策略下响应更快,超调更符合行业要求。

       

      Abstract: For mine hoist constant deceleration system in existing problems, such as large overshoot, control accuracy is not high, the response time is not ideal, this paper presents a hoist fuzzy PID control with constant deceleration fused BP neural network control method.The method takes hoist deceleration error and deceleration error change rate as input, takes PID parameter changes ΔKp, ΔKi, ΔKd as network output, and uses the constructed neural network topology layer structure and pre-prepared training set data, iteratively optimize the weights and thresholds of the membership function and fuzzy rules to improve the trimming accuracy of the PID value of the hoist constant deceleration system, so as to obtain a trained offline assignment table reflecting the relationship between input and output, and then write the table into the PLC's global data block and store it in a two-dimensional array, and finally get the best PID three parameter values through the program call, so as to realize the real-time and accurate control of the constant deceleration, and in MATLAB perform simulation and compare with other algorithms.The results show that under the fuzzy neural network PID control strategy, the response is faster and the overshoot is more in line with industry requirements.

       

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