共查询到20条相似文献,搜索用时 62 毫秒
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介绍了目前常用充电终止控制方法的优缺点,以马斯定律和镍镉、镍氢电池充电特性为基础,使用模糊控制技术对快速充电过程进行智能控制。以XC164CM单片机为控制核心,设计了一种针对镍镉、镍氢电池的数字化智能充电系统。实验结果表明,充电电流较好的跟随了马斯定律给出的可接受的最佳充电曲线,从而提高了充电效率并且有效的防止了电池过充电,实现了高效、快速、安全充电。 相似文献
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为了保障新能源车辆的安全、平稳运行,并且缓解环境危机,加速开发和推广应用新能源车辆,分析单体电池基本性能,为了准确清晰的表征电池电压的变化趋势,采用"电压差归一化曲线"来进行分析动力电池组安全特性,以短期和中长期不同时间尺度为依据制定电动汽车充电过程故障在线预警控制策略,主要研究了电池充电温升因素影响下的中长期充电预警控制策略,并建立目标函数,利用遗传算法进行优化控制,最后利用充电桩监控平台提供的充电状态信息数据,对所提出的基于电池模型的充电设施充电数据在线预警进行了验证. 相似文献
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在电动车充电负荷建模优化的研究中,电动汽车大规模使用后,需要对电动汽车的充电负荷建模与准确计算,以分析对电网的影响.通过对电动汽车电池的充电特性、充电起始荷电状态及充电时间等因素分析,建立单个电动汽车充电负荷模型,根据中心极限定理进而得到大量电动汽车充电负荷的计算方法,分别在不同电价政策下考虑电动汽车常规充电和快速充电情况下,对电动汽车充电负荷进行了仿真比较分析.仿真结果表明,由于电动汽车多在夜间充电,则对原负荷曲线有一定“填谷”作用,均增加了负荷系数,缩小了峰谷差;尤其在分时电价无快充情况下,峰谷差最小,负荷系数最大. 相似文献
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智能厂房温湿度控制系统 总被引:4,自引:0,他引:4
首先分析了厂房温湿度控制与一般建筑物空调系统的区别,指出现在流行的空调控制方法不适合厂房温湿度控制;接着提出一种智能温度控制方法,它不需要确定系统的数学模型,用专控制的方法,在不同控制阶段分别采用开关控制,模糊控制和智能PID控制;最后介绍了实行结果。 相似文献
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模型跟踪广义预测鲁棒自适应控制器 总被引:5,自引:1,他引:4
本文采用滤波CARMA模型,基于内模原理,提出了一种新的广义预测鲁棒自适应控制器,并分析了闭环系统性能,在新的控制器中,引入适当的前馈作用,使得跟踪和调节问题解耦,利用部分状态跟踪、模型参考以及极点配置方法解决跟踪问题,利用多步预测滚动优化方法解决调节问题;适当选择滤波器可以保证对平稳随机扰动有满意的响应,减少可调参数对闭环系统响应的影响,增强系统对未建模动态的鲁棒性,仿真结果表明:该控制器对确定性和非平稳随机扰动具有不变性,对系统时延和阶次变化具有鲁棒性,适用于非最小相位和开环不稳定系统。 相似文献
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This article presents a novel three-loop control system, which supplements control structures known from the literature as model following control (MFC). The major advantage of the proposed system is its high robustness to process parameter variations; it is much higher than that offered by single-loop or two-loop control systems. Features of the new structure are revealed by a theoretical analysis that has been carried out from the viewpoint of requirements for a force/pose controller of a Stäubli RX60 manipulator. This article shows how the proposed control structure responds to such strong process parameter variations and makes a comparison to results yielded by single-loop control structures. 相似文献
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Robust containment control in a leader–follower network of uncertain Euler–Lagrange systems 下载免费PDF全文
A distributed controller is developed that yields cooperative containment control of a network of autonomous dynamical systems. The networked agents are modeled with uncertain nonlinear Euler–Lagrange dynamics affected by an unknown time‐varying exogenous disturbance. The developed continuous controller is robust to input disturbances and uncertain dynamics such that asymptotic convergence of the follower agents' states to the dynamic convex hull formed by the leaders' time‐varying states is achieved. Simulation results are provided to demonstrate the effectiveness of the developed controller. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
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一种专家智能控制器的仿真研究 总被引:1,自引:0,他引:1
该文提出一种专家智能控制器(简称为EI控制器).该控制器的参数可基于专家知识和过程参数的变化实时进行调整。仿真结果表明对于工业过程中的大纯滞后、非线性、变参数特性能获得较为满意的调节效果。 相似文献
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Juan Garrido Francisco Vázquez Fernando Morilla 《International journal of systems science》2016,47(5):1054-1072
This paper presents a new methodology to design multivariable proportional-integral-derivative (PID) controllers based on decoupling control. The method is presented for general n × n processes. In the design procedure, an ideal decoupling control with integral action is designed to minimise interactions. It depends on the desired open-loop processes that are specified according to realisability conditions and desired closed-loop performance specifications. These realisability conditions are stated and three common cases to define the open-loop processes are studied and proposed. Then, controller elements are approximated to PID structure. From a practical point of view, the wind-up problem is also considered and a new anti-wind-up scheme for multivariable PID controller is proposed. Comparisons with other works demonstrate the effectiveness of the methodology through the use of several simulation examples and an experimental lab process. 相似文献
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本文提出一种新型的分散式自适应鲁棒机器人控制方案。它主要解决以下诸方面的问题:1)减少在线计算量;2)通过设置一个非线性观测器来及时修正模型信息,以适应负载及其他因素变化的需要,进而有效地减少所需控制值(尤其当系统处于平稳工作状态时,效果更加明显),相应地,也就减少了系统工作时的动能损耗。这一点对[1]中提出的机器人分散式变结构控制算法有较大改进;3)对系统的不确定性和扰动作用具有鲁棒性。 相似文献
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Jorge Diaz-Salgado Jesus Alvarez Alexander SchaumJaime A. Moreno 《Journal of Process Control》2012,22(1):303-320
The robust feedforward (FF) output-feedback (OF) control problem of (possibly open-loop unstable) continuous exothermic jacketed reactors with isotonic kinetics with respect to reactant concentration is considered. The volume, temperature, and concentration must be regulated by manipulating the feed, exit and coolant flowrates on the basis of volume and temperature measurements. The problem is addressed as an interlaced controller-observer design within a constructive control framework. The result is a quasi linear-decentralized (qLD) FF-OF dynamic controller which: (i) recovers (up to observer convergence) the behavior of a robust nonlinear FF-SF controller, (ii) has closed-loop stability conditions coupled with conventional-like tuning guidelines, and (iii) constitutes an add-on to the PI control scheme commonly employed in industrial reactors. The approach is tested with an open-loop unstable reactor example through simulations. 相似文献