共查询到20条相似文献，搜索用时 250 毫秒
1.
This paper presents a synthetic design procedure for a robust LQ regulator for refining process, including modeling and robust
optimal system designing. The paper discusses three major topics: mathematical modeling of the process with large uncertainty,
determination of a synthetic performance index for optimizing the process, and design of the robust optimal system with robust
guaranteed stability. This research result is a part of preliminary results of the real refining process optimal control system
implemented in the Minfeng Paper Mill, Zhejiang Province. Simulation test results showed that the proposed modeling and control
algorithm are efficient and practicable.
Project supported by the NSFC(69874036) and Zhejiang Province Natural Science Key Foundation of China (ZD9905) 相似文献
2.
根据企业要求,以可编程控制器（PLc）为主控设备,以触摸屏为人机接口,两者之间进行通讯,实现精炼油过程中主要工艺参数的监控。通过控制算法的设计使系统能自动完成所要求的各项功能,确保成品出油的各项参数均达到预定要求。该设计经实用验证达到了企业的目标要求。 相似文献
3.
This paper presents a new design of robust optimal controller for multivariable system. The row characteristic functions of a linear multivariable system and dynamic decoupling of its equivalent system, were applied to change the transfer function matrix of a closed-loop system into a normal function matrix, so that robust H∞optimal stability is guaranteed. Furthermore, for the decoupled equivalent control system the l∞optimization approach is used to have the closed-loop system embody optimal time domain indexes. A successful application on a heater control system verified the excellence of the new control scheme. 相似文献
4.
在“电子系统设计”课程的实验改革中,引入现代PLC控制系统综合设计及其实施过程,帮助学生进一步了解电子系统设计方法,掌握PLC控制器件、组态软件和以太网、串行通信技术等在工业控制系统中的应用,锻炼学生团队协作能力,提高学生学习积极性和创新意识,有助于学生毕业后尽快适应新的工作环境。 相似文献
5.
状态反馈最优控制器设计及仿真 总被引：1，自引：0，他引：1
阐述了线性二次型状态反馈控制器的原理及设计方法,给出了最优状态观测器的存在条件,以及基于最优观测器的最优控制理论．以一级倒立摆为受控对象,通过Matlab仿真实验研究讨论了加权矩阵Q和R的变化对最优控制系统的影响问题,通过最优控制器与PID控制器控制效果进行比较,得出了最优控制器性能更好的结论． 相似文献
6.
一种具有多工作流程自动生产线控制系统的设计 总被引：1，自引：0，他引：1
李子昀 《岳阳职业技术学院学报》2011,26(1):85-87,107
介绍一种多工作流程自动生产线的控制系统的设计思路,详细阐述电一气混合控制的电气控制的设计和气动控制设计。着重分析电气控制设计中控制器的选择和PLC网络设计,在气动控制设计中组建气动控制原理图。 相似文献
7.
介绍了模糊控制技术在纯净水生产中的应用 ,针对被控过程的特点 ,采用普通二维模糊控制器和 PI控制相并联 ,并与开关控制相结合的双模控制方案。给出了控制系统软件框图。实验结果表明 ,该系统设计先进合理 ,控制精度高 ,鲁棒性强 ,提高了水的利用率。 相似文献
8.
This paper presents a nonlinear robust control design method for a generic rotorcraft unmanned aerial vehicle（RUAV）. The control objective is to let the RUAV track some pre-defined time-varying position and headingtrajectories. The proposed controller employs feedback linearization process to realize the dynamic decoupling controland applies adaptive sliding mode control to compensate for the parametric uncertainties and external disturbances.The global asymptotical stability is proved via stability analysis. Compared with the cascaded controller, the proposedcontroller demonstrates a superior tracking performance and robustness through numerical simulation in the presenceof parametric uncertainties and unknown disturbances. 相似文献
9.
针对一类可转化为“标准块控制形”的MIMO非线性系统,基于动态面控制技术,提出一种鲁棒自适应神经网络控制算法。采用径向基函数神经网络逼近不确定性模型,通过引入一阶滤波器,消除后推设计中由于反复对虚拟控制的求导而导致的复杂性问题,同时补偿项的引入可避免反馈线性化方法中可能出现的控制器奇异性问题,无需控制增益矩阵正定、可逆的条件。利用李亚普诺夫方法,证明了闭环系统是半全局一致终结有界,适当选取设计常数,跟踪误差可收敛到原点的一个小邻域内。计算机仿真结果表明此法的有效性。 相似文献
10.
This paper presented a control design methodology for a proton exchange membrane fuel cell （PEMFC） generation system for residential applications. The dynamic behavior of the generation system is complex in such applications. A compre- hensive control design is very important for achieving a steady system operation and efficiency. The control strategy for a 60 kW generation system was proposed and tested based on the system dynamic model. A two-variable single neuron proportional-integral （PI） decoupling controller was developed for anode pressure and humidity by adjusting the hydrogen flow and water injection. A similar controller was developed for cathode pressure and humidity by adjusting the exhaust flow and water injection. The desired oxygen excess ratio was kept by a feedback controller based on the load current. An optimal seeking con- troller was used to trace the unique optimal power point. Two negative feedback controllers were used to provide AC power and a suitable voltage for residential loads by a power conditioning unit. Control simulation tests showed that 60 kW PEMFC generation system responded well for computer-simulated step changes in the load power demand. This control methodology for a 60 kW PEMFC generation system would be a competitive solution for system level designs such as parameter design, performance analysis, and online optimization. 相似文献
11.
This paper describes empirical research on the model, optimization and supervisory control of beer fermentation. Conditions in the laboratory were made as similar as possible to brewery industry conditions. Since mathematical models that consider realistic industrial conditions were not available, a new mathematical model design involving industrial conditions was first developed. Batch fermentations are multiobjective dynamic processes that must be guided along optimal paths to obtain good results. The paper describes a direct way to apply a Pareto set approach with multiobjective evolutionary algorithms (MOEAs). Successful finding of optimal ways to drive these processes were reported. Once obtained, the mathematical fermentation model was used to optimize the fermentation process by using an intelligent control based on certain rules. 相似文献
12.
Xiang Zhengrong Hu Weili 《上海大学学报(英文版)》1998,2(2):135-138
１ＩｎｔｒｏｄｕｃｔｉｏｎＲｏｂｕｓｔｃｏｎｔｒｏｌｏｆｕｎｃｅｒｔａｉｎｓｙｓｔｅｍｓｉｓａｃｅｎｔｒａｌｉｓｓｕｅｉｎｃｏｎｔｒｏｌｔｈｅｏｒｙ．Ｉｎｔｈｅｐａｓｔｆｅｗｙｅａｒｓｍｕｃｈｉｎｔｅｒｅｓｔｈａｓｂｅｅｎｄｅｖｏｔｅｄｔｏｔｈｅｄｅ... 相似文献
13.
ANDRS-TORO B. GIRN-SIERRA J.M. FERNNDEZ-BLANCO P. LPEZ-OROZCO J.A. BESADA-PORTAS E. 《Journal of Zhejiang University. Science. B》2004,(4)
INTRODUCTIONThefermentationprocesshasgreatscientificandpracticalimportance.Forseveralreasons,qua-litycontrol,forexample,itisimportanttoincludeallkindsoftechnologicaladvancesintheindustrialprocesses.Thisisthemainaimofourresearch,whichisverycomplexduetothenon-linearityofthestudiedphenomena.Themathematicalmodelsfoundinliteratureincludeonlylaboratoyconditions.Amathematicalmodelhasbeendevelopedforthebeerfermentationprocessbecauseoftheadvantagesthatitprovides.Itallowssimulatingwhatcanhappenwhe… 相似文献
14.
刘子剑 《常熟理工学院学报》2009,23(10):74-79
研究时滞系统的鲁棒方差约束控制问题．针对带有不确定参数和白噪声干扰的离散时滞系统,设计一类反馈控制器,使通过反馈控制所得到的闭环系统不仅一致渐进稳定,而且系统各状态分量的稳态方差在给定约束范围之内．利用线性矩阵不等式的方法,得出了满足这一反馈控制器的充分条件．给出了一个数值算例,验证了所提出算法的有效性． 相似文献
15.
贺永宜 《天津工程师范学院学报》2000,10(2):5-7
就常用的解决最优控制问题的数学方法,极小值原理和动态规划法,两者进行了简要分析比较,以便在实际工程中,根据不同特点,应用于最优控制系统的设计。 相似文献
16.
论文依托南京理工大学自动化学院过程控制实验室的建设,介绍了过程控制实验系统的组成,重点讲述用于实验教学的不同层次的实验,分析了这些实验的内容以及相互关系,通过系统网络结构及监控实验环节深化了西门子全集成自动化的工业网络模型。实践证明这些实验内容对促进过程控制教学、教师科研、培养学生掌握过程控制系统设计的能力等方面有着重要意义。 相似文献
17.
Jun-hai SHI Zhi-dan ZHONG Xin-jian ZHU Guang-yi CAO 《浙江大学学报(A卷英文版)》2008,9(3):401-409
This study presents a robust design method for autonomous photovoltaic （PV）-wind hybrid power systems to obtain an optimum system configuration insensitive to design variable variations. This issue has been formulated as a constraint multi-objective optimization problem, which is solved by a multi-objective genetic algorithm, NSGA-II. Monte Carlo Simulation （MCS） method, combined with Latin Hypercube Sampling （LHS）, is applied to evaluate the stochastic system performance. The potential of the proposed method has been demonstrated by a conceptual system design. A comparative study between the proposed robust method and the deterministic method presented in literature has been conducted, The results indicate that the proposed method can find a large mount of Pareto optimal system configurations with better compromising performance than the deterministic method. The trade-off information may be derived by a systematical comparison of these configurations, The proposed robust design method should be useful for hybrid power systems that require both optimality and robustness. 相似文献
18.
"计算机控制系统"低成本实验装置的设计及研究型实验 总被引：2，自引：1，他引：2
如何培养自动化专业学生的实践能力、创新能力和综合素质，是一个很值得探索的问题。其中包括：如何解决实验装置问题?如何安排综合性的设计型或研究型的实验?本文探讨“计算机控制系统”低成本实验装置的设计、制作及其在研究型实验中的应用，即物理仿真技术的应用。 相似文献
19.
在现有的基于场景的软件测试技术研究基础上,分析了场景之间的执行关系,设计和实现了一个基于场景的构件软件测试框架。这个测试框架主要分三个部分:建模工具、解析器和模拟器。系统的主要活动包括软件建模、场景合成、真实场景选取以及测试实施,给软件系统的质量保障和可靠性方面带来便利。 相似文献
20.
Delay-dependent robust control for uncertain discrete singular systems with time-varying delay 总被引：1，自引：0，他引：1
The design problem of delay-dependent robust control For uncertain discrete singular systems with time-varying delay is addressed in this paper. The uncertainty is assumed to be norm-bounded. By establishing a finite sum inequality based on quadratic terms, a new delay-dependent robust stability condition is derived and expressed in terms of linear matrix inequalities （LMIs）. A suitable robust state feedback control law is presented, which guarantees that the resultant closed-loop system is regular, causal and stable for all admissible uncertainties. Numerical examples are given to demonstrate the applicability of the proposed method. 相似文献