AIO288模拟量输入输出模块

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¥100.00

型号
AIO288

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更新时间
2021-10-29 17:48:33

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    Profit Loop PKS是一个基于模型预测控制器。Profit Loop PKS Assistant是一个简化Profit Loop PKS配置活动的工具,来实现模型定义。在PVC的控制系统设计过程中,我们在PVC控制逻辑中选定了几个控制效果不理想的控制回路实施从PID转到Profit Loop的控制,均取得了理想的效果。  AIO288模拟量输入输出模块

    厦门仲鑫达自动化设备有限公司

    联系人:李素云

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      首先应该根据不同回路类型的特点,在PVC控制方案中,选择要实现Profit Loop控制的控制回路。

      PID-PL 功能块作为功能块的一种,可以在Control Builder中的功能块Library中直接调用,实现替代传统PID功能块作用。在确定了要实现Profit Loop控制的控制回路以后,在组态的时候应确定用PID-PL 功能块。

      应用Profit Loop,需要获得过程模型。进行过程模型系统识别,既是过程如何相应输入变化的数学表达式,使控制器过去的输出OP值和将来预测的PV值联系起来。Profit Loop PKS model可以从现有的PID参数直接转换而来,也可以通过阶越函数测试获得。在滨化PVC项目中,我们主要应用了第二种方法来获得系统模型。

      在测试完成后,对回路进行整定的方式有两种,种可以通过输入PID参数实现;第二种可以通过针对PID-PL回路输入的整定参数实现。在第二种方式中通过简单地增加性能比值来减慢调节动作的速度,同时增加鲁棒性。反之,如果调节器动作太慢,则可以通过减少性能比值来加速闭环调节器的响应。

      Honeywell公司的EPKS C300 DCS控制系统,融入霍尼韦尔数十年的过程控制、资产管理、领域的经验,融合新控制和现场总线技术。应用EPKS C300系统的滨化PVC项目于08年8月建成并投产,运行良好。同期建设的滨化的离子膜,三氯乙烯,粒碱,环氧丙烷等项目也应用了EPKS C300系统,也都取得了良好的经济效果。




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