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smith Predictor Based Robust Rapid Tracking Controller

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武汉理工大学学报 2006年第S1期28卷 210-213页

作者： LIU Hongbin,HU Dejin (School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200030,China) School of Mechanical Engineering Shanghai Jiaotong UniversityShanghai 200030China

Precise model is hard to get in real application,a smith predictor based robust rapid tracking controller for inaccurate model is proposed. Zero phase error feedforward controller which increases system closed-loop dynamics and disturbance observer based smith feedback control which diminishes model hysteresis and improves stability are integrated. This method is applied in the noncircular machining with piezoelectric ceramic driver. The simulation and experiment show that the performance robustness and stability are well balanced in bandwidth about 200 Hz. The controller can decrease system hysteresis and get good tracking performance for predefined square-wave input signal.

关键词： smith predictor disturbance objection feedforward compensation tracking performance

smith—Purcell型自由电子激光器

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光学学报 1984年第7期4卷 607-611页

作者：陈建文傅淑芬张大可中国科学院上海光学精密机械研究所

本文讨论了smith-Purcell型自由电子激光器的工作原理,并研究了空间频率可变光栅对辐射的影响.计算表明,如果采用这种光栅并适当选择工作参数,则可望降低泵浦电流强度阈值,并提高辐射功率.

关键词：自由电子激光器 Purcell smith

Computation of the smith Form for Multivariate Polynomial Matrices Using Maple

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American Journal of Computational Mathematics 2012年第1期2卷 21-26页

作者： Mohamed Salah Boudellioua Department of Mathematics and Statistics Sultan Qaboos University Muscat Oman

In this paper we show how the transformations associated with the reduction to the smith form of some classes of mul-tivariate polynomial matrices are computed. Using a Maple implementation of a constructive version of the Quillen-Suslin Theorem, we present two algorithms for the reduction to a particular smith form often associated with the simplification of linear systems of multidimensional equations.

关键词： smith Form Unimodular Equivalence Quillen-Suslin Theorem Maple

基于smith PSO-Fuzzy PID的营养液EC值调控模型研究

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灌溉排水学报 2022年第11期41卷 37-44页

作者：王永涛刘坚李家春陈波李擎湖南大学汽车车身先进设计制造国家重点实验室长沙410082 贵州省水利科学研究院贵阳550002 贵州大学机械工程学院贵阳550025

【目的】探寻多通道水肥控制装置的精准调控与控制技术。【方法】本文设计了由工业铝型材机架、主管路系统、吸肥系统、混肥系统、检测系统、控制系统及施肥系统等7部分构成的多通道水肥一体化装置,构建了基于PSO优化Fuzzy PID的营养液E... 详细信息

【目的】探寻多通道水肥控制装置的精准调控与控制技术。【方法】本文设计了由工业铝型材机架、主管路系统、吸肥系统、混肥系统、检测系统、控制系统及施肥系统等7部分构成的多通道水肥一体化装置,构建了基于PSO优化Fuzzy PID的营养液EC值调控模型并引入smith预估当中(smith PSO-Fuzzy PID)。并以目标EC值2 mS/cm为例,采用MATLAB分别进行了传统PID、模糊PID(Fuzzy PID)和smith PSO-Fuzzy PID仿真。【结果】采用smith PSO-Fuzzy PID控制方法,稳态时间约为47 s,超调量约为4.83%,系统EC值稳定在1.987~2.080 mS/cm。【结论】与传统PID和Fuzzy PID相比,本文基于PSO优化Fuzzy PID的水肥装置smith控制系统,具有更快的响应速度,更高的精度。

关键词： smith PSO 模糊PID控制水肥一体化

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心理学与经济学的交叉与渗透——写在“纪念Kahneman和smith获得诺贝尔经济学奖专栏”的前面

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心理科学进展 2003年第3期11卷 241-242页

作者：王辉北京大学光华管理学院北京100871

心理学是研究人类心理活动的发生、发展规律的学科,其研究成果可以帮助我们了解自身心理活动的规律,理解周围人的行为特点,帮助我们更好地适应多变的环境.而经济学是通过市场机制,研究资源配置问题的学科,可以帮助我们了解经济运行规律... 详细信息

心理学是研究人类心理活动的发生、发展规律的学科,其研究成果可以帮助我们了解自身心理活动的规律,理解周围人的行为特点,帮助我们更好地适应多变的环境.而经济学是通过市场机制,研究资源配置问题的学科,可以帮助我们了解经济运行规律,有助于人们进行理性的选择与决策.由于基本假设及研究方法等方面存在的差异,心理学与经济学对同一问题的看法往往存在根本的不同.以决策为例,传统经济学认为人类的决策是受外界物质动机驱动的,是完全理性的,是以追求自我利益最大化为目的的.决策者在进行决策时,需要对所有可以得到的信息进行分析,针对众多的选择做出一个具有一定前瞻性的最优决策.然而,心理学尤其是认知心理学则认为,决策行为是由内在驱力引发的,人类的理性是有限的,决策者个体是一个复杂的系统,这个系统可以有意识地、理性地识别并解释一部分的信息,同时,由于感知觉和思维加工能力的缺陷,个体的决策也受到一些难以被意识觉察的因素(如个体的偏好)产生的系统影响.

关键词：心理学实验经济学 Kahneman smith 学科交叉学科渗透

行为经济学和实验经济学的奠基人——Daniel Kahneman和Vernon smith(续)

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外国经济与管理 2002年第12期24卷 41-46页

作者：孙经纬

二、行为经济学的基础大约半个世纪以前,在smith(1956)开创了有限理性基础上的信息处理和决策行为研究方法的同时,Edwards(1954)把对决策行为的研究介绍给了心理学家,同时也指出了未来研究的方向.但是,在Daniel Kahneman和Amos Tversky(... 详细信息

二、行为经济学的基础大约半个世纪以前,在smith(1956)开创了有限理性基础上的信息处理和决策行为研究方法的同时,Edwards(1954)把对决策行为的研究介绍给了心理学家,同时也指出了未来研究的方向.但是,在Daniel Kahneman和Amos Tversky(于1996年去世)发表关于判断和决策的论文以前,认知心理学研究并没有成型.

关键词：行为经济学实验经济学 Daniel Kahneman Vernon smith

Why Hollywood Hates Business： Immanuel Kant＇s Role in Avatar.＂ Movie Reviewed by Adam smith

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Journal of Philosophy Study 2013年第6期3卷 470-480页

作者： James F. Pontuso Hampden-Sydney College

One of cinematic science fiction＇s most popular plot lines is to imagine an invasion of earth by an advanced alien species. James Cameron＇s Avatar turns the tables on that premise. Humans attack a peaceful, less technologically sophisticated race in order to exploit their natural resources. Driving the assault is a mining company hell-bent on improving its bottom line. The villain of Avatar is not a person, but those people who seek profit. To put it starkly, business is evil. But why has the entertainment business cast business as a heavy？ Hollywood has now made Immanuel Kant as the director of moral sentiment. Not, of course, directly, but rather the ghostwriter of Hollywood＇s ideas about morality. The works of Kant are not discussed or debated in the public arena, but their principles have influenced the way people think about what is just and good. The ideas of Kant have filtered into the contemporary discourse and are one of the key ingredients in the national dialogue over what it means to be moral. The categorical imperative holds that an action is moral only if it is free from calculation of reward or gain. To be truly, moral people must abandon all practical considerations of need or desire; they must be directed by pure good will alone. Business people can never measure up to Kant＇s standard. They always make choices based on cost and benefit. Their businesses would quickly go bankrupt, if they made decisions on good will rather than interest. Kant＇s principles have raised the moral standard so high that even the common inclination to seek one＇s own benefit is looked on with some mistrust. In Kantian-influenced movies, business people have come to play the evil antagonist; they seek gain instead of the good. How would Adam smith, the father of economic rationality, respond to popularized Kantian morality？

关键词： smith Kant Hollywood

Study on smith-fuzzy Self-tuning PID Control Algorithm of Temperature for Regenerative Magnesium Reduction Furnace

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Study on Smith-fuzzy Self-tuning PID Control Algorithm of Te...

ROBUST smith PREDICTIVE CONTROLLER FOR PROCESS WITH INVERSE RESPONSE

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作者： Hui Wu,Jun-Qi Yu The School of Information and Control Engineering,Xi''an University of Architecture & Technology,Xi''an 710055,China

＜正＞Aimed at large time-delay and time-varying characteristics of Regenerative Magnesium Reduction Furnace, smith-fuzzy Self-tuning PID（SF-PID） control algorithm is *** algorithm takes the advantage of smith predictive control for overcoming a large time-delay and Fuzzy Self-tuning PID control algorithm for achieving perfect control effect on time-varying,noise disturbance characteristics of the *** result shows that the algorithm has the following advantages:strong robustness,anti-disturbance,inhibits the large time-delay and time-varying effects,strong adaptabilities for various in the *** method obtains good control performance to the temperature,so the algorithm should be widely used in magnesium production process.

关键词： Regenerative Magnesium Reduction Furnace Temperature Fuzzy smith PID

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Journal of Shanghai Jiaotong university(Science) 1999年第2期4卷 10-16页

作者：钟庆昌谢剑英

smith predictor known as the time delay compensator was extended to control the process with inverse *** robust control theory was employed to design the robust controller,which has only one parameter to be determined with compromise among the rise time,undershoot,robustness and capability to reject disturbance of the closed loop *** former two specifications can be assessed quantitatively and the latter two *** show that the proposed method has significant improvements and wide applicable ranges for inverse response process.

关键词： smith predictor inverse response process (IRP) non minimum phase (NMP) sensitivity function process control inverse response compensator open right half zero