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生物连续逆流超声提取是一个复杂的工艺流程,生产过程中各环节紧密相连,各阶段需要协调控制,传统的控制方法不能保证有效成分的提取效率和较高的系统自动化水平要求。通过分析连续逆流超声提取工艺流程及设备特点,针对具有强干扰强时滞的提取过程,采用了模糊串级和比值控制策略,结合PLC控制技术、工业以太网技术和Win CC组态技术,完成了控制系统的优化设计。测试表明所设计的控制系统满足了连续逆流超声提取工艺的要求,运行稳定,有效克服了生产过程中的干扰和时滞,提高了生物提取效率。
Biological continuous counter-current ultrasonic extraction is a complex process, the production process is closely linked to all aspects of the need for coordinated control of all stages, the traditional control methods can not guarantee the extraction efficiency of active ingredients and higher system automation level requirements. By analyzing the process flow and equipment characteristics of continuous counter-current ultrasonic extraction, the fuzzy cascade and ratio control strategy is adopted for the extraction process with strong disturbance and strong delay, and combined with PLC control technology, industrial Ethernet technology and Win CC configuration technology The optimal design of the control system. The test shows that the designed control system meets the requirements of the continuous counter-current ultrasonic extraction process, runs stably and effectively overcomes the interference and time delay in the production process and improves the biological extraction efficiency.