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1.
混合动力客车的控制策略决定整车的性能。分析某混联式混合动力客车的组成结构和基于逻辑控制的控制策略,建立相应的混联式混合动力客车仿真模型及其控制器,通过AVL/CRUISE和MATLAB/Simulink联合仿真分析,获得该车在中国典型城市公交工况下的动力性和百公里油耗。仿真结果表明,各主要部件能按照控制规则实现状态的合理切换,基于逻辑控制的控制策略能满足整车性能指标要求。 相似文献
2.
This paper presents a control strategy of a hybrid fuel cell/battery distributed generation （HDG） system in distribution systems. The overall structure of the HDG system is given, dynamic models for the solid oxide fuel cell （SOFC） power plant, battery bank and its power electronic interfacing are briefly described, and controller design methodologies for the power conditioning units and fuel cell to control the power flow from the hybrid power plant to the utility grid are presented. To distribute the power between the fuel cell power plant and the battery energy storage, a neuro-fuzzy controller has been developed. Also, for controlling the active and reactive power independently in distribution systems, the current control strategy based on two fuzzy logic controllers has been presented. A Matlab/Simulink simulation model is developed for the HDG system by combining the individual component models and their controllers. Simulation results show the overall system performance including load-following and power management of the HDG system. 相似文献
3.
赖学江黄森炜廖洪毅曹智校陈清云 《福建工程学院学报》2021,(4):372-377
以深圳某办公楼为例,探讨冰蓄冷空调系统运行策略的优化。采用鸿业全年负荷计算及能耗分析软件(HY-EP)进行全年动态负荷模拟,对冷负荷的负荷率进行分析。在选定冰蓄冷系统后,基于模拟结果和地区的峰谷平电价的特点,采用了基于全年动态负荷结果分析预测和结合前一天的负荷作为当日的负荷预测,将全年逐日运行策略简化为4 种设备的运行方案,控制较为容易实现,且需要增加的初投资较少,是结合冰蓄冷系统与全年动态负荷模拟技术的创新应用。 相似文献
4.
ＮＴＲＯＤＵＣＴＩＯＮＡｆｔｅｒｍｕｃｈｒｅｓｅａｒｃｈａｎｄｓｏｍｅｓｕｃｃｅｓｓｆｕｌａｐ ｐｌｉｃａｔｉｏｎｓｏｆＡｒｔｉｆｉｃｉａｌＮｅｕｒａｌＮｅｔｗｏｒｋ (ＡＮＮ)ｔｏｃｏｎｔｒｏｌｓｙｓｔｅｍｓ,ＡＮＮｈａｓｂｅｃｏｍｅｏｎｅｏｆｔｈｅｉｍ ｐｏｒｔａｎｔｔｏｏｌｓｔｏｓｈｏｗｔｈｅｉｎｔｅｌｌｉｇｅｎｃｅｏｆｔｈｅｈｕ ｍａｎｂｒａｉｎ .ＳｉｎｃｅＡＮＮｃａｎｂｅｕｓｅｄｔｏｄｅｓｃｒｉｂｅａｎｙｎｏｎｌｉｎｅａｒｃｏｎｔｉｎｕｏｕｓｆｕｎｃｔｉｏｎ ,ｉｔｈａｓｄｒａｗｎｍｕｃｈａｔ… 相似文献
5.
传统PID控制难以在非线性、迟延、时变和具有扰动特质的超临界主汽温度控制系统中达到满意的控制效果.因此,提出了一种采用多步预测、滚动优化和反馈校正的神经网络预测控制系统.以某超临界电厂主汽温度为研究对象,MATLAB仿真结果表明：不同的工况建立的主汽温度神经网络动态模型,能够很好地预测对象的动态特性,取得了优于传统PID的控制效果. 相似文献
6.
This paper proposes an adaptive algorithm of neural nets with a special perturbation for a real time velocity control system
of a VVVF (Variable Voltage Variable Frequency) hydraulic elevator. The weight vector of the neural network is adaptively
adjusted by the LMS (Least Mean Square) with perturbation, so it is not necessary to know the nonlinear continuous function
of the control system. The nonlinear velocity control system is considered as the controller output function in an adaptive
controller model. The experimental results obtained from the VVVF hydraulic elevator showed that the neural nets controller
using the perturbation algorithm proposed are much stabler and faster in dynamic response compared with the conventional PID
(Proportion-Integration-Derivation) controller.
Project (69775013) Supported by NSFC 相似文献
7.
在Matlab/Simulink软件中建立并简化仿形刀架机液伺服控制系统的数学模型,采用方波和正弦信号对有或无弹性负载两种条件进行动态特性仿真分析,利用Matlab绘制Bode图对系统稳定性进行仿真分析,最后分析系统稳态误差,并且进行现场试验对其结果进行验证,为机液伺服仿形刀架的设计提供理论依据. 相似文献
8.
针对永磁同步电动机(PMSM)的动态数学模型、参数改变及易受外界干扰,提出了一种基于专家控制的PMSM转速控制系统.利用专家控制算法对PMSM控制系统进行了Matlab仿真分析,并与PI控制算法进行了比较,验证了所提控制系统具有良好的动态特性和鲁棒性.实验结果表明,该控制系统响应速度快,超调小,系统运行稳定. 相似文献
9.
讨论以发动机最佳燃油经济性或电动机最佳效率为控制目标的动力转换控制策略,以油门踏板位置及蓄电池SOC状态为输入变量,设计了混合动力汽车动力转换模糊控制器,建立了整车控制仿真模型。文中阐述了由电机切换到发动机工作时发动机的起动、调速控制,以及离合器快速平稳地结合的过程。仿真结果表明：对转换车速的门限值控制模糊化能够使转换车速更加符合驾驶员对动力性的要求。 相似文献
10.
Control design is important for proton exchange membrane fuel cell （PEMFC） generator. This work researched the anode system ofa 60-kW PEMFC generator. Both anode pressure and humidity must be maintained at ideal levels during steady operation. In view of characteristics and requirements of the system, a hybrid intelligent PID controller is designed specifically based on dynamic simulation. A single neuron PI controller is used for anode humidity by adjusting the water injection to the hydrogen cell. Another incremental PID controller, based on the diagonal recurrent neural network （DRNN） dynamic identification, is used to control anode pressure to be more stable and exact by adjusting the hydrogen flow rate. This control strategy can avoid the coupling problem of the PEMFC and achieve a more adaptive ability. Simulation results showed that the control strategy can maintain both anode humidity and pressure at ideal levels regardless of variable load, nonlinear dynamic and coupling characteristics of the system. This work will give some guides for further control design and applications of the total PEMFC generator. 相似文献
11.
To implement structural hybrid simulation independent of the control system of any testing equipment in civil engineering, an external command control approach is put forward. Several setup technologies and the corresponding API approaches are investigated to simultaneously combine numerical simulation with physical testing. Hybrid program technology is put forward and described in detail, using Visual C++ program to effectively and accurately control testing equipment and MATLAB program to implement numerical simulation with easy extension. The control program of testing equipment and numerical simulation program are integrated by calling MATLAB engine in Visual C++. A hybrid simulation about a full-scale six-story masonry structure is carried out. The testing results manifest that the external command control approach has the versatility because of simple hardware connection and control program independent on control software of testing equipment; powerful program function of Visual C++ and flexible program of MATLAB are integrated by hybrid program technology; hybrid simulation system provides a realistic and cost-effective testing platform that enables earthquake engineer researchers to accurately and efficiently capture the seismic performance of large or complex structures without having to carry out physical testing of the entire structure. 相似文献
12.
In a hybrid system, the subsystems with discrete dynamics play a central role in a hybrid system. In the course of engineering machinery of cluster construction, the discrete control law is hard to obtain because the construction environment is complex and there exist many affecting factors. In this paper, hierarchically intelligent control, expert control and fuzzy control are introduced into the discrete subsystems of engineering machinery of cluster hybrid system, so as to rebuild the hybrid system and make the discrete control law easily and effectively obtained. The structures,reasoning mechanism and arithmetic of intelligent control are replanted to discrete dynamic, continuous process and the interface of the hybrid system. The structures of three types of intelligent hybrid system are presented and the human experiences summarized from engineering machinery of cluster are taken into account. 相似文献
13.
Study on the Fuzzy COntrol Strategy of Automobile with CVT 总被引：3，自引：0，他引：3
In order to study the dynamic characteristics of automobile with a CVT system, a bond graph analysis model of continuously variable transmission is established.On the base of the simulation state space equations that are established with bond graph theory,a fuzzy control strategy with an expert system of starting process has been introduced.Considering uncertain system parameters and exterior resistance disturbing,the effect of the profile of membership function and the defuzzification algorthm on the capacity of the fuzzy controller has been studied.The result of simulation proves that the proposed fuzzy controller is effective and feasible,Such controller has been employed in the actual control and has proved practicable.The study lays a foundation for design of the fuzzy controller for automobile with a CVT system. 相似文献
14.
Traditional studies on integrated statistical process control and engineering process control (SPC-EPC) are based on linear autoregressive integrated moving average (ARIMA) time series models to describe the dynamic noise of the system.However,linear models sometimes are unable to model complex nonlinear autocorrelation.To solve this problem,this paper presents an integrated SPC-EPC method based on smooth transition autoregressive (STAR) time series model,and builds a minimum mean squared error (MMSE) controller as well as an integrated SPC-EPC control system.The performance of this method for checking the trend and sustained shift is analyzed.The simulation results indicate that this integrated SPC-EPC control method based on STAR model is effective in controlling complex nonlinear systems. 相似文献
15.
Nowadays, the operation tasks and environmentof robotic manipulators have become more and moresophisticated, which requires that robotic manipula-tors possess more and more degrees of freedom(DOF) to offer greater dexterity and versatility. Thekinematic redundancy occurs when the DOF of a ma-nipulator is more than the minimum numberdemanded for executing a given task. The operationalperformance of manipulators may be greatly enhancedby utilizing the kinematic redundancy such as singu-larity … 相似文献
16.
A new chaos control method is proposed to take advantage of chaos or avoid it. The hybrid Internal Model Control and Proportional Control learning scheme are introduced. In order to gain the desired robust performance and ensure the system's stability, Adaptive Momentum Algorithms are also developed. Through properly designing the neural network plant model and neural network controller, the chaotic dynamical systems are controlled while the parameters of the BP neural network are modified. Taking the Lorenz chaotic system as example, the results show that chaotic dynamical systems can be stabilized at the desired orbits by this control strategy. 相似文献
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18.
瞿少成 《重庆大学学报(英文版)》2003,2(2)
1. Introduction Sliding mode variable structure control (SMVSC) as a general design approach for a robust control system is well established. In recent years, a considerable amount of effort has been put into studying discrete sliding variable structure control (DSMVSC) with the development and application of computer [1-4]. However, theoretically speaking, DSMVSC can not be obtained from the continuous counterpart by means of simple equivalence [4]. Most of the research on DSMVSC f… 相似文献
19.
INTRODUCTIONOneoftheoldestresearchesofchaosincon trolfieldscanbeseeninthepaperbyKalman(1956) ,whofirstfoundnon synchronousoscil lationsinatwo dimensionalsampled datacontrolsystem .IntheOGYmethoddevelopedbyOttetal.(1990 ) ,chaoticphenomenawaseliminatedbyadjustingparametersofthesystemswhenthechaoticorbitcomesnearaperiodicalorbit.ButtheOGY’smethodrequiresmonitoringthesys temlongenoughtodeterminealinearizationmodeintheneighborhoodofthedesiredunstableperiodicorbitbeforeitcanbeapplied .Besi… 相似文献
20.
结合单轴结构微型燃气轮机的动态特性建立PSCAD/EMTDC模型,同时给出了电力电子装置的拓扑结构及逆变器的PQ控制策略。仿真结果表明,整个微型燃气轮机发电系统与实际相符,单轴结构微型燃气轮机具有较好的动态特性,辅以电力电子装置后能够实现电能的并网输出,且有功功率与无功功率独立可控。 相似文献