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随着冷轧板产品的市场竞争日益激烈,各钢铁企业在提高产能的同时更注重确保工艺质量。酸洗是冷轧之前的关键工序,它可以去除热轧后钢卷表面的氧化铁皮及各种污垢,便于冷轧进行加工,因此酸洗质量的好坏也直接决定了冷轧的质量,而酸洗的质量主要由酸液温度决定。目前该机组采用传统PID控制方式对酸液温度进行控制的效果并不理想,稳定性有欠缺。针对这一问题,提出改用自抗扰控制技术对酸液温度进行控制的思路,对薄板酸洗温度的被控对象进行了建模分析,在总结自抗扰控制器的基础上,设计了薄板酸洗酸液温度的自抗扰控制器。在MATLAB环境下针对所提出的模型和控制器进行了仿真分析,并总结出一套自抗扰控制器的参数整定规律和方法。仿真结果验证了所设计的自抗扰控制器的可行性和有效性。
With the increasingly fierce market competition in cold-rolled sheet products, all steelmakers pay more attention to ensuring the quality of their processes while increasing their production capacity. Pickling is the key process before cold rolling, it can remove the surface of the hot rolled steel oxide scale and a variety of dirt, easy to cold-rolled processing, so pickling quality is also a direct decision of the quality of cold-rolled, and Pickling quality is mainly determined by the acid temperature. At present, the traditional PID control method of the unit to control the acid temperature is not ideal, the stability is lacking. In response to this problem, the idea of using self-disturbance rejection control technology to control the temperature of acid solution is put forward. The controlled object of sheet pickling temperature is modeled and analyzed. Based on the summary of ADRC controller, ADRC controller for the acid pickling temperature of sheet metal. In the MATLAB environment, the proposed model and controller are simulated and analyzed, and a set of parameters tuning rules and methods of ADRC are summarized. Simulation results verify the feasibility and effectiveness of the ADRC controller.