共查询到20条相似文献,搜索用时 109 毫秒
1.
2.
3.
军事后勤系统是一类控制复杂的大系统,控制理论为复杂大系统提供了一个有效的控制方法。本文首先介绍了一个基本的军事后勤物流,然后从工程控制理论的角度分析了军事决策过程。并对军事系统预测模型控制器及其在后勤系统中的应用进行了探讨研究。 相似文献
4.
二阶系统是经典控制理论课程中的重要环节。传递函数是经典控制理论中设计控制器的基础。论文中设计了一个基于二阶系统阶跃响应的传递函数辨识的matlab实验。分别针对典型二阶欠阻尼系统和过阻尼(含临界阻尼)系统进行传递函数的辨识。其中欠阻尼系统传递函数的辨识采用阶跃响应特征法,过阻尼系统传递函数的辨识采用阶跃响应y-t直线拟合法。设计了具有代表性的实验数据以及实验结果。教学实践表明,该实验在实际教学中具有良好的效果。 相似文献
5.
一种镇定倒立摆系统的新方法 总被引:3,自引:0,他引:3
在对倒立摆系统深入分析的基础上,应用振荡控制理论提出一种镇定倒立摆系统的新方法。通过在倒上摆支承点的垂直方向上加入一个零均值的高频振荡信号,改善了倒立摆系统本身的稳定性,使其在倒立位置附近成为一振荡稳定系统。理论分析和仿真研究表明这种方法是行之有效的,为研究倒立摆一类自不稳定系统开辟了一条新的途径。 相似文献
6.
7.
1引言一种新的控制算法或控制理论在实际应用之前必须对它的可行性进行研究,同时也必须考察它的控制效果。利用仿真的方法可以初步估计控制效果,但理论化的仿真并不能完全客观地体现实际效果,于是,人们就建立了一些具有典型对象的实验系统。通过将算法或理论应用于这... 相似文献
8.
具有冲击影响的宏观经济系统H∞控制 总被引:2,自引:0,他引:2
应用系统分析方法研究了宏观经济系统中的冲击作用,认为冲击是一种能量有限的扰动,进而应用H∞控制理论研究了宏观经济系统的控制问题,并针对一个政府政策和公众预期的宏观经济系统求出Riccati不等式的H∞控制解。仿真结果表明,该H∞控制策略具有较好的扰动衰减效果。 相似文献
9.
10.
光电子能谱实验装置的数据采集系统 总被引:1,自引:0,他引:1
文章介绍了一个用于大型光电子能谱实验装置的控制。数据采集与处理系统以及作者为该系统设计的控制及数据采集软件的结构及具体实现,该系统可在同步辐射光源下运行多种实验模式,并具有灵活的用户接口,简洁的控制层和严格的保护措施。 相似文献
11.
北京同步福射实验室生物大分子晶体学实验站是我国生命科学研究的重要平台,高效方便的控制系统是其有效运行的重要保证。介绍了根据平台需求开发的基于LabVIEW的实验控制系统。该系统大大简化了各种实验控制操作,提高了实验效率。为实现高通量实验需求打下基础。 相似文献
12.
Matching, linear systems, and the ball and beam 总被引:2,自引:0,他引:2
A recent approach to the control of underactuated systems is to look for control laws which will induce some specified structure on the closed loop system. In this paper, we describe one matching condition and an approach for finding all control laws that fit the condition. After an analysis of the resulting control laws for linear systems, we present the results from an experiment on a nonlinear ball and beam system. 相似文献
13.
对北京同步辐射生物大分子晶体学光束线与实验站控制系统所需的快速管理系统硬件信息和系统状态方法中采用的一种基于配置文件的数据管理方法进行了详细介绍.这种方法灵活高效,易于数据的统一管理和修改.经实验证明,配置文件是一种有效的数据管理手段. 相似文献
14.
In this study, we introduce the design methodology of an optimized fuzzy controller with the aid of particle swarm optimization (PSO) for ball and beam system.The ball and beam system is a well-known control engineering experimental setup which consists of servo motor, beam and ball. This system exhibits a number of interesting and challenging properties when being considered from the control perspective. The ball and beam system determines the position of ball through the control of a servo motor. The displacement change of the position of ball leads to the change of the angle of the beam which determines the position angle of a servo motor.The fixed membership function design of type-1 based fuzzy logic controller (FLC) leads to the difficulty of rule-based control design when representing linguistic nature of knowledge. In type-2 FLC as the expanded type of type-1 FL, we can effectively improve the control characteristic by using the footprint of uncertainty (FOU) of the membership functions. Type-2 FLC exhibits some robustness when compared with type-1 FLC.Through computer simulation as well as real-world experiment, we apply optimized type-2 fuzzy cascade controllers based on PSO to ball and beam system. To evaluate performance of each controller, we consider controller characteristic parameters such as maximum overshoot, delay time, rise time, settling time, and a steady-state error. In the sequel, the optimized fuzzy cascade controller is realized and also experimented with through running two detailed comparative studies including type-1/type-2 fuzzy controller and genetic algorithms/particle swarm optimization. 相似文献
15.
基于模态坐标表示的含压电片结构横向振动系统方程,采用独立模态法直接针对系统的高阶模型设计控制律,利用劳斯判据证明由所设计的控制器引起的控制溢出可被有效抑制,极大地降低了由于模型降阶引起的误差。同时,对压电柔性悬臂梁的高阶振动模态进行主动控制仿真模拟和实验研究,结果表明施加主动控制后柔性悬臂梁的模态阻尼显著提高,受控悬臂梁的振动得到了快速抑制。仿真计算和实验结果取得了良好的一致性。研究结果表明,利用压电陶瓷作为驱动元件,采用独立模态控制法实现柔性结构的振动抑制是一种高效的振动主动控制方法,在航天航空等领域中 相似文献
16.
17.
设计了一种激光光路定位控制系统,用于EAST汤姆逊散射诊断的光路准直和测量区域的定位,其精确性对于该诊断的测量尤为重要,该诊断用于测量EAST装置放电时等离子体的电子温度和密度;为节约宝贵的实验时间,结合该系统给出一种快捷的激光光路定位方法;重点描述该系统中基于单片机PIC16F874A设计的靶板控制器,与传统步进电机控制器相比,具有故障恢复、支持光纤通信、体积小等优点。该系统已在2010年度的EAST实验中投入使用,运行可靠,定位精确,大幅缩短了光路准直所需时间。 相似文献
18.
The aim of this paper is to compare the accuracy of the absolute nodal coordinate formulation and the floating frame of reference formulation for the rigid-flexible coupling dynamics of a three-dimensional Euler–Bernoulli beam by numerical and experimental validation. In the absolute nodal coordinate formulation, based on geometrically exact beam theory and considering the torsion effect, the material curvature of the beam is derived, and then variational equations of motion of a three-dimensional beam are obtained, which consist of three position coordinates, two slope coordinates, and one rotational coordinate. In the floating frame of reference formulation, the displacement of an arbitrary point on the beam is described by the rigid-body motion and a small superimposed deformation displacement. Based on linear elastic theory, the quadratic terms of the axial strain are neglected, and the curvatures are simplified to the first order. Considering both the linear damping and the quadratic air resistance damping, the equations of motion of the multibody system composed of air-bearing test bed and a cantilevered three-dimensional beam are derived based on the principle of virtual work. In order to verify the results of the computer simulation, two experiments are carried out: an experiment of hub–beam system with large deformation and a dynamic stiffening experiment. The comparison of the simulation and experiment results shows that in case of large deformation, the frequency result obtained by the floating frame of reference formulation is lower than that obtained by the experiment. On the contrary, the result obtained by the absolute nodal coordinate formulation agrees well with that obtained by the experiment. It is also shown that the floating frame of reference formulation based on linear elastic theory cannot reveal the dynamic stiffening effect. Finally, the applicability of the floating frame of reference formulation is clarified. 相似文献
19.
分布式控制系统在中性束注入实验中的应用 总被引:5,自引:0,他引:5
介绍了中科院等离子体所HT-7托卡马克装置上中性束注入(NBI)控制系统设计方案和实现方法。系统采用分级分布式结构,由PLC时序控制单元、数据采集与处理单元、参数预设单元和真空与低温监控单元组成;各单元采用网络通讯互联,实现数据的传输和控制命令的执行。系统成功地应用于实验并获得理想的实验结果,为中性束注入加热的稳态运行提供可靠保障。 相似文献