共查询到20条相似文献,搜索用时 31 毫秒
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Xian-Ming Zhang Qing-Long Han Xiaohua Ge Derui Ding Lei Ding Dong Yue Chen Peng 《IEEE/CAA Journal of Automatica Sinica》2020,7(1):1-17
Networked control systems are spatially distributed systems in which the communication between sensors, actuators,and controllers occurs through a shared band-limited digital communication network. Several advantages of the network architectures include reduced system wiring, plug and play devices,increased system agility, and ease of system diagnosis and maintenance. Consequently, networked control is the current trend for industrial automation and has ever-increasing applications in a wide range of areas, such as smart grids, manufacturing systems,process control, automobiles, automated highway systems, and unmanned aerial vehicles. The modelling, analysis, and control of networked control systems have received considerable attention in the last two decades. The ‘control over networks’ is one of the key research directions for networked control systems. This paper aims at presenting a survey of trends and techniques in networked control systems from the perspective of ‘control over networks’, providing a snapshot of five control issues: sampled-data control, quantization control, networked control, event-triggered control, and security control. Some challenging issues are suggested to direct the future research. 相似文献
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线性模糊PID控制器的设计与分析 总被引:2,自引:0,他引:2
买买提热依木·阿布力孜 《计算机应用与软件》2006,23(4):137-138,144
基于模糊语言控制规则描述的模糊控制,已成功地用于工业过程控制并具有广泛的应用前景。用模糊线性PID控制器的数学等效式在MATLAB Simulink和Floulib工具帮助下用Mamdani方法对一阶控制对象进行二维PID模糊控制仿真实验,理论分析与实验证明采用模棚线性PID控制方法比传统的PID控制方法在应用上简便、清晰,具有一定的实用价值。 相似文献
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现代控制理论在火电厂热工过程控制中的应用 总被引:2,自引:0,他引:2
控制理论和计算机技术的发展,大大促进了过程控制技术的提高,现代控制理论正在火电厂热工过程控制中得到实际应用.本文概述了最优控制、预测控制、状态反馈控制、不确定性控制等在火电厂热工过程控制中的研究和应用现状,并对今后的发展方向作了简单的预测. 相似文献
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发动机电子控制系统是高性能、高可靠性发动机开发的核心研究内容,是保证发动机动力性、经济性和排放性的重要因素之一.针对车用汽油发动机,本文首先分析了典型的车用汽油发动机电子控制系统结构,然后围绕电子节气门控制系统、燃油喷射控制系统、点火控制系统、空燃比控制系统、怠速控制系统、涡轮增压控制系统、爆震检测与控制系统以及汽油机先进燃烧模式控制这8项关键问题展开论述,并着重介绍了近年来国内外的研究内容和研究成果.最后对车用汽油发动机电子控制系统的发展前景和发展方向进行了展望. 相似文献
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模型预测控制(MPC)采用集中控制的策略,主要应用于多输入多输出(MIMO)复杂过程的工艺对象.工艺过程对不同的控制变量,往往有不同的控制要求,如定值控制、区间控制或单边控制.当前的控制算法未考虑单边控制功能,而且形式繁琐、求解不便.为此,本文采用目标规划的思想,提出具有线性规划形式并且可实现多目标的模型预测控制新算法.将新算法用于多个典型过程对象,证实算法不仅能够控制常规目标,而且能够解决单边控制问题,实现了真正的多目标控制. 相似文献
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An approach for designing a shop floor control system is proposed in this paper. In this approach, the IDEF0 model, Biemans' model, and the Phillips' CAM model are three major technologies used for determining the control request, control classification, and the control allocation. This approach has further been applied to propose a real shop floor control system in Taiwan, whose discussion is presented at the end. 相似文献
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Kurt E. Häggblom 《Journal of Process Control》1996,6(4):223-232
A procedure for designing distillation control systems with spe cified nominal properties is presented. The desired behaviour of the control system for both setpoint changes and disturbances in the feed flow rate and the feed composition can be specified. Both types of specifications can be handled because the disturbances can be inferred from the behaviour of the inventory control system. The control system is realized as a combined internal model and inferential control (CIMIC) system. A disturbance rejecting and decoupling (DRD) control structure is obtained as a special case. The performance of the control system is demonstrated experimentally on a pilot-scale distillation column. For comparison, experiments with pure internal model control (IMC) are also illustrated. A preliminary model of the distillation column was determined from step tests carried out in open-loop operation, but the final model used in the control system designs was obtained via a control-relevant closed-loop identification. 相似文献
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结合生产实际,对粗轧控制系统进行综合设计。介绍粗轧控制系统的结构,以及粗轧核心APC控制、粗轧RAWC控制和带钢SSC控制的控制思想并给出相应控制算法。 相似文献
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通过一个实例程序,系统、详尽地讲解了如何设计Delphi的自定义控件。该控件代码技术难度不高,旨在说明Delphi控件的设计方法,包括自定义控件创建向导、代码设计、图标设计及控件发布。 相似文献
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仿人智能推理与控制器的实现 总被引:4,自引:2,他引:4
用计算机来模拟人的控制思维,主要是模拟人的形象直觉推理控制思维和抽象逻辑推理控制思维。文献犤1犦依据仿人智能控制的特点,提出了仿人智能推理与控制器模型。该文以单输入单输出系统为例,分析了该模型在实际控制系统中的实现原理与结构。该结构具有智能性、可实现性和稳定性的特点,在实际控制系统中取得了较好的控制效果,初步实现了仿人智能控制。 相似文献
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NONLINEAR OPTIMAL CONTROL: A CONTROL LYAPUNOV FUNCTION AND RECEDING HORIZON PERSPECTIVE 总被引:1,自引:0,他引:1
Two well known approaches to nonlinear control involve the use of control Lyapunov functions (CLFs) and receding horizon control (RHC), also known as model predictive control (MPC). The on-line Euler-Lagrange computation of receding horizon control is naturally viewed in terms of optimal control, whereas researchers in CLF methods have emphasized such notions as inverse optimality. We focus on a CLF variation of Sontag's formula, which also results from a special choice of parameters in the so-called pointwise minnorm formulation. Viewed this way, CLF methods have direct connections with the Hamilton-Jacobi-Bellman formulation of optimal control. A single example is used to illustrate the various limitations of each approach. Finally, we contrast the CLF and receding horizon points of view, arguing that their strengths are complementary and suggestive of new ideas and opportunities for control design. The presentation is tutorial, emphasizing concepts and connections over details and technicalities. 相似文献
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介绍了广义系统的基本思想及近年来的发展方向,讨论了广义系统的经济控制、分散控制、鲁棒控制、网络控制,探讨了其在控制工程中的应用,并结合其应用背景给出了广义系统在控制工程中的应用实例。 相似文献