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“最优控制”课程是控制科学与工程学科硕士研究生的一门必修课程,课程以经典变分法、极小值原理、动态规划为基本理论,重点讲述了线性二次型控制中的状态调节器、输出调节器和跟踪问题的综合设计方法。由于该课程理论性强、综合程度高,难度较大,为了提高教学效果,结合课程的教学目标,开展了基于Matlab/Simulink仿真的教学案例研究。结合工程应用重点针对经典变分法、极小值原理、状态调节器和跟踪问题开发具体教学案例,使学生从控制原理、对象模型、仿真程序和仿真结果几方面进行深入了解,提高了学生学习的兴趣,增加了教学的交互性、启发性与创新性,对“最优控制”课程教学改革具有良好的意义。 相似文献
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我在电力系统线性最优控制和非线性控制理论与应用两个领域取得了系统性、创造性的重大研究成果,推进了本学科的发展.在线性最优控制理论与应用方面,我率先将变分理论及其它有关数学分支理论、现代控制理论、电力系统动态学、计算机技术结合成一有机整体,建立了电力系统线性最优控制新学科体系.以我为第一作者撰写的《输电系统最优控制》专著,获1982年度全国优秀科技图书一 相似文献
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为提高轮毂电机驱动电动汽车行驶的平顺性,在轮辋内安装3组对称弹簧—阻尼装置,并建立轮毂电机悬架.在此基础上,轮毂电机驱动电动汽车主动悬架最优控制,以二次型最优控制为主要手段,并获得直线电机最优输出力,并利用内环推力滞环控制、外环速度PID控制的双闭环控制方式,获得最优力,可实现轮毂电机驱动电动汽车主动悬架最优控制效果提... 相似文献
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基于汽车ABS的单轮模型,建立其状态空间模型,并运用二次型性能指标求得最优控制Uopt,最后利用MATLAB\Simulink模块进行了仿真分析。 相似文献
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模糊控制、神经网络控制、专家系统控制、线性最优控制、综合智能控制等典型智能技术在电力系统自动化中的运用。 相似文献
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《Journal of The Franklin Institute》2022,359(10):4699-4726
The vibration of a railway car body is a superposition of the vibrations of its various modes. It is typically easy to obtain the physical vibration of the car body using sensors in an in situ or a simulated test vehicle. However, it is difficult to determine the modal vibration of the body and its contribution. There are no effective multi-mode vibration control methods for the car bodies. This study proposes a modal vibration decomposition method (MVDM) based on singular value decomposition (SVD) and least squares fitting (LSF). Accordingly, the physical vibration of a railway car body is decomposed into modal vibrations. A method for calculating the modal contribution factor (MCF) is presented, and the dominant flexible modes of the car body are determined and considered the target for the vibration control method. Several pieces of equipment are considered as dynamic vibration absorbers (DVAs) to control the multi-mode vibration of the car body using the dynamic vibration absorption theory and determine the installation parameters of the individual equipment. Finally, the effectiveness of vibration control is verified through dynamic simulations. The results demonstrate the effective decomposition of the physical vibration of the car body into various modal vibrations using the MVDM. This provides accurate data for the MCF calculation and determination of the flexible modes of the car body. The proposed method reduces the vibration of the target modes and improves the ride quality of the railway vehicle. At the optimal damping ratio, the vibration of the DVA-based equipment itself is acceptable. This allows for multi-mode vibration control without requiring extensive modification to the car body structure or suspension system parameters of the vehicle. 相似文献
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简要介绍了国华宁东电厂安稳装置的作用、功能。针对宁东电厂330KV变电站接线方式,对安稳装置运行中可能出现的问题进行了分析并提出了解决方案。 相似文献
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This paper presents solution of the optimal linear-quadratic controller problem for unobservable integral Volterra systems with continuous/discontinuous states under deterministic uncertainties, over continuous/discontinuous observations. Due to the separation principle for integral systems, the initial continuous problem is split into the optimal minmax filtering problem for integral Volterra systems with deterministic uncertainties over continuous/discontinuous observations and the optimal linear-quadratic control (regulator) problem for observable deterministic integral Volterra systems with continuous/discontinuous states. As a result, the system of the optimal controller equations are obtained, including the linear equation for the optimally controlled minmax estimate and two Riccati equations for its ellipsoid matrix (optimal gain matrix of the filter) and the optimal regulator gain matrix. Then, in the discontinuous problems, the equation for the optimal controller and the equations for the optimal filter and regulator gain matrices are obtained using the filtering procedure for deriving the filtering equations over discontinuous observations proceeding from the known filtering equations over continuous ones and the dual results in the optimal control problem for integral systems. The technical example illustrating application of the obtained results is finally given. 相似文献
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《Journal of The Franklin Institute》2001,338(2-3):133-147
We used two simple control laws based on linear velocity and cubic velocity feedback to suppress the high-amplitude vibrations of a structural dynamic model of the twin-tail assembly of an F-15 fighter when subjected to primary resonance excitations. We developed the nonlinear differential equations of motion and obtained an approximate solution using the method of multiple scales. Then, we conducted bifurcation analyses for the open- and closed-loop responses of the system and investigated theoretically the performance of the control strategies. The theoretical findings indicate that the control laws lead to effective vibration suppression and bifurcation control. Furthermore, we conducted experiments to verify the theoretical analysis. We built a digital control system that consists of a SIMULINK modeling software and a dSPACE controller installed in a personal computer. Actuators made of piezoelectric ceramic material were used. The results show that both laws are effective at suppressing the vibrations. To compare the performance of both techniques, we calculated the power requirements for a simple system. 相似文献
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静不稳定控制技术作为现代航空航天、水中兵器主动控制技术,在近些年逐渐成为研究热点。本文针对某静不稳定鱼雷,建立了纵向运动模型,运用最优控制理论设计了俯仰通道三回路过载控制系统,最后对设计出的控制器进行了特征点控制系统仿真。结果说明,三回路过载控制方法能较好地控制静不稳定鱼雷。 相似文献
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针对某型控制板的振动耐久例行试验中出现的连接螺钉脱落和断裂现象,仿真计算正常和松动两种状态的螺钉响应应力,比较分析确定螺钉折断的原因为螺钉松动,并提出了相应的规程要求。 相似文献
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本文提出基于公交优先的变相序交通信号多相位模糊智能优化控制方法.在相位的选择上考虑相位的车辆排队长度和乘客量,使乘客量多的相位优先,采用了模糊控制方法获得绿灯增益时间.仿真实验分析表明,与传统模糊控制方法相比,本文的方法能更有效地减少公交车延误. 相似文献
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氧枪是转炉炼钢的关键设备之一,它的控制系统性能关系到冶炼钢水的质量与效率。要想保证氧枪系统的安全稳定运行就必须有一套完善的控制体系。简介了转炉氧枪的控制系统以及控制系统中的重要电器设备,简述了编码器的分类及原理,详细说明了速度编码器和高度编码器在氧枪升降控制中起到的作用,并且初步构思了两种编码器所采集的数据共享的方法。 相似文献
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RB功能是大容量、高参数火电机组在高度自动化运行方式下的重要安全保障,本文分析了成功运用于660MW超超临界机组的RB功能控制策略。试验证明,这种控制策略控制品质良好,可以在无运行人员的干预下,把机组自动、快速、平稳地下降到运行辅机所能承受的最大负荷上,增强了机组运行的安全性、稳定性、经济性,为同类660MW超超临界机组RB投入提供了实际数据和理论参考。 相似文献