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基于DeltaV的精馏塔温度多重控制系统的设计及应用 被引量:1
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作者 李文 《化工自动化及仪表》 CAS 2022年第6期707-711,共5页
针对精馏塔温度单回路PID控制滞后大、动态响应迟缓及定速风机启停扰动大等缺陷,提出一种基于DeltaV的精馏塔温度多重控制系统方案。将塔顶出口定速风机改造为变频风机,以环境温度为干扰因素、塔顶温度和塔底温度为被控变量、蒸汽调节... 针对精馏塔温度单回路PID控制滞后大、动态响应迟缓及定速风机启停扰动大等缺陷,提出一种基于DeltaV的精馏塔温度多重控制系统方案。将塔顶出口定速风机改造为变频风机,以环境温度为干扰因素、塔顶温度和塔底温度为被控变量、蒸汽调节阀和变频风机为执行器,构建前馈-串级控制+分程控制的多重控制系统。对改进后的多重控制系统方案应用效果进行跟踪分析和验证,结果表明该改进方案有效,能够准确控制精馏塔温度并提高其产品合格率。 展开更多
关键词 多重控制系统 精馏塔 DELTAV系统 前馈-串级控制 分程控制
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综合系统多重递阶控制设计方法研究(一) 空-空航炮的机身指向火控解算方法 被引量:2
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作者 彭可茂 申功璋 文传源 《火力与指挥控制》 CSCD 北大核心 2001年第3期14-16,23,共4页
为了满足综合系统多重递阶控制设计方法的需求 ,建立了空 -空航炮的机身指向火控解算方法。该方法是在期望弹丸命中目标的情况下求解机身期望指向及其变化率。在某验证机的控制增稳系统上 ,采用所建立的火控解算方法以及综合系统多重递... 为了满足综合系统多重递阶控制设计方法的需求 ,建立了空 -空航炮的机身指向火控解算方法。该方法是在期望弹丸命中目标的情况下求解机身期望指向及其变化率。在某验证机的控制增稳系统上 ,采用所建立的火控解算方法以及综合系统多重递阶控制设计方法 ,设计了综合飞行 /火力控制系统。仿真结果表明 ,所建立的空 -空航炮机身指向火控解算方法较好地满足了综合飞行 /火力控制系统的设计需求 。 展开更多
关键词 综合系统多重递阶控制设计 空-空航炮 机身指向火控解算 火力控制 数值算法 系统控制理论 火控系统
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石化行业DCS应用于压缩机组控制的可行性
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作者 胡睿智 《中文科技期刊数据库(全文版)工程技术》 2021年第5期69-69,共1页
石化行业在国民经济的发展中有重要作用,是我国的支柱产业之一。石化行业是大型工业自动化的最佳应用场所。石化行业控制系统传统为单一DCS方式控制,但随着工业的发展衍生出独立的ITCC控制系统。本文选型为和利时公司的T810和T880控制系... 石化行业在国民经济的发展中有重要作用,是我国的支柱产业之一。石化行业是大型工业自动化的最佳应用场所。石化行业控制系统传统为单一DCS方式控制,但随着工业的发展衍生出独立的ITCC控制系统。本文选型为和利时公司的T810和T880控制系统,在硬件上来阐述DCS控制系统改为ITCC控制系统的可行性。 展开更多
关键词 DCS ITCC 多重化冗余控制系统
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Recent developments on applications of sequential loop closing and diagonal dominance control schemes to industrial multivariable system 被引量:4
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作者 A.H.Mazinan M.F.Kazemi 《Journal of Central South University》 SCIE EI CAS 2013年第12期3401-3420,共20页
With a focus on an industrial multivariable system, two subsystems including the flow and the level outputs are analysed and controlled, which have applicability in both real and academic environments. In such a case,... With a focus on an industrial multivariable system, two subsystems including the flow and the level outputs are analysed and controlled, which have applicability in both real and academic environments. In such a case, at first, each subsystem is distinctively represented by its model, since the outcomes point out that the chosen models have the same behavior as corresponding ones. Then, the industrial multivariable system and its presentation are achieved in line with the integration of these subsystems, since the interaction between them can not actually be ignored. To analyze the interaction presented, the Gershgorin bands need to be acquired, where the results are used to modify the system parameters to appropriate values. Subsequently, in the view of modeling results, the control concept in two different techniques including sequential loop closing control(SLCC) scheme and diagonal dominance control(DDC) schemes is proposed to implement on the system through the Profibus network, as long as the OPC(OLE for process control) server is utilized to communicate between the control schemes presented and the multivariable system. The real test scenarios are carried out and the corresponding outcomes in their present forms are acquired. In the same way, the proposed control schemes results are compared with each other, where the real consequences verify the validity of them in the field of the presented industrial multivariable system control. 展开更多
关键词 multivariable system diagonal dominance control sequential loop closing control Profibus network OPC server orifice relation interaction analysis Gershogerin bands non-minimum phase system
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Stability Analysis for Switching of Discrete Linear Singular Systems
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作者 GUO Xiao-li LI Wei MU Xiao-wu 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2006年第2期283-287,共5页
In this paper, we study the stability of discrete linear singular systems by switching controller. Using some recent results on multiple-Lyapunov function technique, we obtain two sufficient conditions of linear singu... In this paper, we study the stability of discrete linear singular systems by switching controller. Using some recent results on multiple-Lyapunov function technique, we obtain two sufficient conditions of linear singular systems. 展开更多
关键词 linear singular systems switching controller multiple-Lyapunov function
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Event-Triggered Consensus for Multiple Nonholonomic Systems 被引量:1
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作者 LI Miao LIU Zhongxin CHEN Zengqiang 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2018年第5期1227-1243,共17页
The paper investigates the consensus problem of multiple nonholonomic systems. Two event-triggered control strategies, one centralized and the other distributed, are developed, which can reduce the frequency of contro... The paper investigates the consensus problem of multiple nonholonomic systems. Two event-triggered control strategies, one centralized and the other distributed, are developed, which can reduce the frequency of control updating. Under the proposed protocols, the multiple nonholonomic systems can achieve consensus, and the bound of inter-event time intervals is provided to illustrate that no Zeno behavior exists. Finally, numerical simulations are also provided to demonstrate the effectiveness of the proposed control strategies. 展开更多
关键词 CONSENSUS event-triggered control multiple nonholonomic systems.
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