Abstract In the zinc roasting process, the stability of the roasting temperature directly affects the product quality. However, the stabilizing control of the temperature inside a large-scale zinc roaster encounters complex process characteristics, fluctuating working conditions and delayed detection of product quality. The complex concentrate supply gives rise to fluctuations of zinc concentrate composition, which in turn affects the reaction atmosphere and working conditions. The trend of the roasting temperature, which contains abundant information on the potential change of working conditions, is underused in traditional controllers, leading to difficulties in stabilizing control of large-scale zinc roasters. In this work, a trend-based event-triggering fuzzy control strategy, incorporating qualitative trend analysis and an event-triggering mechanism in fuzzy control design, is proposed for the temperature stabilizing control of a large-scale zinc roaster. Qualitative trend analysis is adopted to extract the trend information of the roasting temperature. An embedded event-triggering mechanism can handle the underlying transition of working conditions timely. Hence, the fuzzy controller increases the utilization rate of the information contained in the temperature measurements. Experiments are conducted to evaluate the feasibility and advantages of the proposed fuzzy controller.

中文翻译：

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基于趋势的事件触发型大型锌焙烧炉稳定控制模糊控制器

摘要 在锌焙烧过程中，焙烧温度的稳定性直接影响产品质量。然而，大型锌焙烧炉内部温度的稳定控制，面临工艺特点复杂、工况波动、产品质量检测滞后等问题。复杂的精矿供应导致锌精矿成分的波动，进而影响反应气氛和工作条件。焙烧温度的变化趋势包含大量关于工况潜在变化的信息，但在传统控制器中没有得到充分利用，导致大型锌焙烧炉的稳定控制存在困难。在这项工作中，一种基于趋势的事件触发模糊控制策略，结合定性趋势分析和模糊控制设计中的事件触发机制，提出了大型锌焙烧炉的温度稳定控制。采用定性趋势分析提取烘焙温度的趋势信息。嵌入式事件触发机制可以及时处理工作条件的底层转换。因此，模糊控制器提高了温度测量中包含的信息的利用率。进行实验以评估所提出的模糊控制器的可行性和优点。嵌入式事件触发机制可以及时处理工作条件的底层转换。因此，模糊控制器提高了温度测量中包含的信息的利用率。进行实验以评估所提出的模糊控制器的可行性和优点。嵌入式事件触发机制可以及时处理工作条件的底层转换。因此，模糊控制器提高了温度测量中包含的信息的利用率。进行实验以评估所提出的模糊控制器的可行性和优点。