几种不稳定滞后对象的预测PID 控制

针对几种不稳定滞后过程，给出一种预测PID控制器的结构形式．该控制器具有内环和外环两种控制器：内环控制器主要用于稳定系统；外环控制器具有预测PID控制的结构形式，主要用于消除输入干扰的影响和改善控制系统的动态性能．这种控制器结构简单，可调参数少，且参数的调节方便、直观．仿真结果表明，在干扰和模型失配的情况下，此类预测PID控制器仍具有良好的控制性能和鲁棒稳定性能．     

基于模糊控制的水泥回转窑温度控制系统设计

本文分析了目前水泥工业自动化技术的现状，介绍了模糊控制技术在水泥回转窑温度控制系统中的成功应用、DCS系统的结构和水泥回转窑温度控制过程应用软件开发。运行结果表明，系统稳定可靠，控制效果良好。能满足生产工艺要求。     

周期PID温度控制的原理及实现

本文主要论述了周期PID控制原理,推导了周期PID控制和微机自动实现温度冷端补偿的算法.介绍了实现周期控制系统构成,并给出在加热炉上的应用实例.     

陶瓷窑温度控制CAN总线模块的研制

介绍了在陶瓷窑温度控制系统中使用的高精度CAN总线控制模块的开发。该模块嵌入了用于控制温度的PID算法和其他算法，不仅能局部控制，还可以进行联网达到全局控制。同时还介绍了CAN总线的应用层协议的制定，以及测量热电偶和室温的硬件和软件上的措施。     

特大纯滞后对象的控制

本文简要介绍了控制纯滞后对象的常规方法,给出了一种对会有特大纯滞后的对象实施控制的方法。文中就一个（τ/T＝50的对象进行了仿真,结果表明该方法具有很好的动态响应性能、抗干扰性能和鲁棒性能。     

一种大滞后过程的智能控制

本文针对一个带有大时滞的热工系统提出了一种递阶型智能控制器，其处于低层的ＰＩＤ控制在高层的实时专家控制系统管理下工作，该控制器的反馈输入是受控不同位置处事个温度的加权平均。     

神经元自适应PID控制器在加热炉温度控制中的应用

较详细地介绍了用微型计算机控制网带式加热炉温度的设计过程，由于网带式加热炉具有参数时变，非线性和时滞特征，传统的控制方法很难保证系统的控制品质，采用神经元自适应PID控制器，对控制器参数实行实时在线优化调整，其控制效果优于传统的PID控制器和Fuzzy-PID控制器。     

非线性调节技术在大滞后系统中的应用

针对大滞后被控对象介绍了一种非线性PID控制器,并采用贝加莱PCC控制器将该控制方法用于温度控制。     

大纯滞后工业对象的神经元控制器

提出了一种大纯滞后对象的Smith预估神经元控制器设计方法。仿真实验结果表明，此种设计方法，对于大纯滞后工业对象的控制具有满意的控制效果。     

Distributed Tracking Control for Networked Mechanical Systems

This paper investigates the distributed tracking control problems for a group of networked mechanical systems. We describe three scenarios that motivate these problems. Firstly, under the conditions that the desired time‐varying trajectory is available to a portion of the networked mechanical systems and that the available signals from the neighboring mechanical systems include the position and velocity information, a distributed tracking control strategy is proposed. Next, we remove the requirement for the neighboring mechanical system's velocity information and propose a control method so that the coupling signals among the networked mechanical systems can be only position information. In the third scenario, we assume that only positions are measured for each mechanical system. Distributed nonlinear observers are proposed to estimate the local mechanical system's velocity and acceleration. Based on the estimated states, the distributed controllers are designed to achieve the tracking control. Simulation results are provided to show the effectiveness of the proposed control laws.     

时滞分布参数系统中和控制器设计

首先给出中和控制器设计思路,针对具有时滞特性的分布参数系统,设计中和控制器,讨论此类系统的稳定问题.利用Lyapunov稳定性理论并结合矩阵不等式处理方法,得出具有时滞特性分布参数系统稳定中和控制器存在的充分条件.最后结合所给条件,给出一个数值仿真说明其有效性.     

Distributed Control of Nonlinear Uncertain Systems: A Cyclic-small-gain Approach

This paper presents a cyclic-small-gain approach to distributed control of nonlinear multi-agent systems for output agreement. Through a novel nonlinear control law design, the output agreement problem is transformed into a stabilization problem, and the closed-loop multi-agent system is transformed into a large-scale system composed of input-to-state stability (ISS) subsystems which are interconnected with each other through redefined outputs. By forcing the redefined outputs to go to arbitrarily small neighborhoods of the origin, practical consensus is achieved for the agents in the sense that their outputs ultimately converge to each other within an arbitrarily small region. A recently developed cyclic-small-gain result is adopted to assign appropriately the ISS gains to the transformed interconnected system. Moreover, if the system is disturbancefree, then consensus can be guaranteed. Interestingly, the closedloop multi-agent system is also robust to bounded time-delays and disturbances in information exchange.      

基于微分方程对称的分布参数系统稳态控制

应用对称群理论中经典对称, 以无穷小生成元为分析工具, 考虑分布参数系统的控制问题已有研究, 在此基础上, 本文给出利用微分方程对称实现分布参数系统稳态控制的方法. 通过求解微分方程的对称, 借助其和无穷小生成元之间的关系, 研究给出符合控制目标稳态要求的分布参数系统边界控制条件. 针对两个例子,说明了利用微分方程对称实现分布参数系统稳态控制的过程, 设计了边界控制条件, 进行了仿真说明. 相较基于经典对称获得分布参数系统无穷小生成元的过程, 利用微分方程对称, 避免了空间延拓过程, 并可能获得与其不同的无穷小生成元形式.     

Distributed Model Predictive Control for Networked Plant-wide Systems With Neighborhood Cooperation

For large-scale networked plant-wide systems composed by physically (or geographically) divided subsystems, only limited information is available for local controllers on account of region and communication restrictions. Concerning the optimal control problem of such subsystems, a neighbor-based distributed model predictive control (NDMPC) strategy is presented to improve the global system performance. In this scheme, the performance index of local subsystems and that of its neighbors are minimized together in the determination of the optimal control input, which makes the local control decision also beneficial to its neighboring subsystems and further contributes to improving the convergence and control performance of overall system. The stability of the closed-loop system is proved. Moreover, the parameter designing method for distributed synthesis is provided. Finally, the simulation results illustrate the main characteristics and effectiveness of the proposed control scheme.      

分布式实时系统结构研究

首先介绍了分布式实时系统的应用背景,论述了两种传统的分布式实时系统的体系结构,重点研究了两种新型结构的特征.抽象出了分布式实时系统的特征,并提出了一个层次结构模型,该模型详细定义了每一层的功能,具有通用性和灵活性.     

Resilience Against Replay Attacks: A Distributed Model Predictive Control Scheme for Networked Multi-Agent Systems

In this paper,a resilient distributed control scheme against replay attacks for multi-agent networked systems subject to input and state constraints is proposed.The methodological starting point relies on a smart use of predictive arguments with a twofold aim:1)Promptly detect malicious agent behaviors affecting normal system operations;2)Apply specific control actions,based on predictive ideas,for mitigating as much as possible undesirable domino effects resulting from adversary operations.Specifically,the multi-agent system is topologically described by a leader-follower digraph characterized by a unique leader and set-theoretic receding horizon control ideas are exploited to develop a distributed algorithm capable to instantaneously recognize the attacked agent.Finally,numerical simulations are carried out to show benefits and effectiveness of the proposed approach.     

基于现场总线的温室分布式控制系统

讨论了在温室自动控制系统中如何引入现场总线技术构成全分布式控制系统，并阐述了分布式系统结构的特点和其智能模块的系统结构。     

A Hybrid Fragmentation Approach for Distributed Deductive Database Systems

Fragmentation of base relations in distributed database management systems increases the level of concurrency and therefore system throughput for query processing. Algorithms for horizontal and vertical fragmentation of relations in relational, object-oriented and deductive databases exist; however, hybrid fragmentation techniques based on variable bindings appearing in user queries and query-access-rule dependency are lacking for deductive database systems. In this paper, we propose a hybrid fragmentation approach for distributed deductive database systems. Our approach first considers the horizontal partition of base relations according to the bindings imposed on user queries, and then generates vertical fragments of the horizontally partitioned relations and clusters rules using affinity of attributes and access frequency of queries and rules. The proposed fragmentation technique facilitates the design of distributed deductive database systems. Received 4 August 1999 / Revised 30 March 2000 / Accepted in revised form 6 October 2000     

分布式视频点播系统的接入控制研究

Video on Demand(VoD)systems are considered as one of the most valuable services for the next generation broad-bandwidth Internet. To provide high-quality service, the VoD system must employ an admission control module to guarantee QoS, but there are still less research works having been made in this field, especially for distributed VoD systems. In this paper, we mainly focus on distributed admission control for VBR video streams in distributed VoD systems. We firstly discuss different approaches and then two admission control strategies are proposed with experimental comparisons. Our research is also further extended to resource assignment in distributed VoD systems. At the end of this article, we address issues in implementing distributed admission control.