共查询到20条相似文献，搜索用时 187 毫秒
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倒立摆装置和球杆系统被公认为自动控制理论中的典型实验设备，也是控制理论教学和科研中不可多得的典型物理模型。二者结合而成的球杆倒立摆系统更是高阶次、不稳定的非线性系统。本文设计了基于MATLAB的该装置的先进控制仿真系统，采用开放式的体系结构，设计了包括几种先进控制算法、用户界面菜单、动画效果演示、运动曲线绘制等功能的仿真系统。可以用来进行教学实验。检验各种控制方法的控制效果。 相似文献
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本文用基于无源的方法对球杆系统进行动能和势能的修订来镇定系统,通过互联和阻尼配置的技术将系统的偏微分方程简化为简单的非线性常微分方程,就可以得到一个渐近稳定的控制器. 相似文献
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赵志明 《内蒙古科技与经济》2007,(8S):97-97,99
PLC程序控制系统是自动控制系统，是计算机和通信技术结合的产物，是一种专门用于工业生产过程的现场设备，采用PLC系统实现输煤系统的控制，可大大提高输煤系统的安全运行，本文着重从PLC系统的应用方面进行阐述。 相似文献
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结合叉车结构件涂装生产线的建设，首先讨论了涂装生产线的工艺特点和自动控制系统的设计。开发了基于现场总线的涂装线自动控制系统。该系统主要由上位机、PLC控制系统和现场智能监控仪表等组成，实现涂装线分布控制，集中管理。论述了PROFIBUS现场总线控制系统的整体构架。 相似文献
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以计算机技术为基础的嵌入式系统，跟传统的控制系统比较，具有微内核、高实时性、系统精简、专用性强等特点，是机电控制系统的最佳选择。主要介绍了嵌入式系统特点，并讨论了嵌入式微处理器、软硬件开发平台，最后介绍了Stewart平台伺服控制器的设计。 相似文献
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刚厂板坯库加热炉区自动化控制系统由基础自动化控制系统、过程与管理控制系统组成。通过将两种现场总线技术ProfiBus和Control Ne相结合，从而实现L级网络中仪表、电气控制系统的通信；同时通过采用以太网技术实现基础自动化系统和过程与管理控制系统之间的通信。 相似文献
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《Journal of The Franklin Institute》2021,358(18):9561-9586
In this paper a novel adaptive robust fault-tolerant sync control method is proposed for a two-slider system where two sliders are constrained by a flexible beam. At first the dynamic models of sync motion system subject to external disturbances and actuator faults are derived. In order to avoid the shortcomings of truncated model, the model of flexible beam is described by using infinite dimensional equation. Then based on the models a novel disturbance observer and an adaptive fault-tolerant control law are designed. The disturbance observer is used to estimate and cancel external disturbances. The adaptive fault-tolerant control is used to deal with the partial loss of effectiveness faults. Lyapunov functional approach is used to prove that the closed-loop system with the proposed control laws is uniformly bounded stable. Finally, some simulation results display that the proposed control laws can obtain excellent sync performance in the present of external disturbances and actuator partial loss of effectiveness faults. 相似文献
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声自导技术的基础是波束形成技术,对波束形成技术的研究能够让我们更好地提高水下航行器的自动导引能力。本文首先对声自导系统的模型和基本职能进行了简单介绍,然后对波束形成技术和方位估计（参数估计）技术在无人水下航行器声自导技术上的应用进行了初步的研究,为我们将来发展新型无人水下航行器提供了一定的理论基础。 相似文献
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相控阵雷达波束控制系统的主要功能是实现天线波束指向的定位控制.同时,该系统的性能优劣直接影响到雷迭的性能指标,所以其自身还应具备脱机检测和联机监测功能.本文重点讲述了采型号雷达的波束控制系统的设计原理及应用. 相似文献
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Manipulating flexible objects stirs a great deal of interest due to the potential applications in industry. Most previous research work with multiple manipulators, however, focused on developing control strategies for the manipulation of rigid bodies. This paper seeks to develop simple yet practical and efficient control scheme that enables cooperating arms to handle a flexible beam. Specifically the problem studied herein is that of two arms rigidly grasping a flexible beam and capable of generating forces/moments in such a way as to move a flexible beam along a predefined trajectory. The paper develops a sliding mode control law that provides robustness against model imperfection and uncertainty. It also provides an implicit stability proof. Given the bounds of uncertainty in the model of the flexible beam and choosing a switching surface that enforces trajectory tracking, a control algorithm is designed to push the states to remain on the switching surface. Simulation results for two three joint arms moving a flexible beam are presented to validate the theoretical results. 相似文献
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Yasmine El-Ashi Taha Landolsi Rached Dhaouadi 《Journal of The Franklin Institute》2011,348(7):1435-1455
In this paper, we study the accuracy of an optical vibration sensing system using Gaussian beam analysis. The proposed optical system uses a He-Ne laser source whose Gaussian beam impinges on a quad-cell photodetector array. The normalized optical power for each cell is obtained through numerical simulation based on the well-known Gaussian beam optics formulation, as the beam scans the plane of the photodetectors due to vibration. The system detection principle lies upon finding a relationship between the power distribution of the quad-cell and the position of the beam centroid, which allows us to identify the characteristics of the vibration applied, such as direction, frequency and strength. The aspects of practical implementation and experimental limitations on the power distribution accuracy are discussed and the discrepancies with the theoretical results are presented. 相似文献
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本文讨论了TD-SCDMA系统的下行信号模型,并根据TD-SCDMA系统上行信道估计可以直接用于下行波束赋形的特点,研究了特征值分解方法下的下行波束成形算法的性能,并仿真比较了其与基于最大径准则等下行波束形成算法在不同环境下的性能。 相似文献
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机载SAR采用相控阵天线是一个重要发展方向,而运动补偿系统对机载SAR系统至关重要.本文采用坐标映射的方法将大地坐标系下的预定波束指向映射到天线平台坐标系下,并转换为天线阵元的相位偏移,完成波束控制,实现了机载SAR的运动补偿.在基于DSP和FPGA的硬件平台上实现了该算法.初步实验结果验证了软、硬件的正确性. 相似文献
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为在高能直线加速器出口获得尽可能好的束流品质,严格控制束流在加速器中的轨道是至关重要的。首先定量研究了束流的初始偏轴和加速器部件的安装误差对束流轨道偏轴的影响,并以北京正负电子对撞机二期工程(BEPCII)的直线加速器为例,给出了上述各种误差导致轨道偏轴的模拟计算结果及其分析。进而讨论了BEPCII直线加速器轨道校正系统的设计研究,给出了轨道校正系统的优化布局和对加速器部件的安装公差要求。 相似文献