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2018 Chinese Control And Decision Conference (CCDC)最新文献

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Random finite set based data assimilation algorithm for dynamic data driven simulation 基于随机有限集的动态数据驱动仿真数据同化算法
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407164
Peng Wang, Ge Li, Rusheng Ju, Xiang Zhang, Kedi Huang, Zhonghua Yang
Computer simulation has long been used for studying and predicting behaviors of complex systems. With the recent advances in sensor and network technologies, the availability and fidelity of real time measurements have been greatly increased. This makes the new simulation paradigm of dynamic data driven simulation more and more popular. It can assimilate the real time measurements for much better analysis and prediction of complex systems. Data assimilation techniques are the foundation of the dynamic data driven simulation, but the traditional particle filter based data assimilation algorithms can't meet the actual application requirements. In this paper, we study how to utilize the real time measurements for the dynamic data driven simulation. A new random finite set based data assimilation algorithm is proposed to overcome the limitations of the standard data assimilation algorithms. The random finite set based measurement model and simulation model that are used in the data assimilation process are introduced. The detailed implementation of the random finite set based data assimilation algorithm is presented. The study case with anti-piracy is used to practically illustrate the proposed data assimilation algorithm. The effectiveness and accuracy of the algorithm are checked by experiments.
计算机模拟早已被用于研究和预测复杂系统的行为。随着传感器和网络技术的发展,实时测量的可用性和保真度大大提高。这使得动态数据驱动仿真这一新的仿真范式越来越受欢迎。它可以吸收实时测量,以便更好地分析和预测复杂系统。数据同化技术是动态数据驱动仿真的基础,但传统的基于粒子滤波的数据同化算法已不能满足实际应用需求。在本文中,我们研究了如何利用实时测量进行动态数据驱动仿真。针对标准数据同化算法的局限性,提出了一种新的基于随机有限集的数据同化算法。介绍了数据同化过程中使用的基于随机有限集的测量模型和仿真模型。给出了基于随机有限集的数据同化算法的具体实现。以反盗版为例,对所提出的数据同化算法进行了实际验证。通过实验验证了该算法的有效性和准确性。
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引用次数: 0
Non-dissipative equalization with voltage-difference based on FPGA for lithium-ion battery 基于FPGA的锂离子电池电压差非耗散均衡
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407299
Z. Fan, Ma Yan, Duan Peng, Mingchao Chen, Chen Hong
As power source of electric vehicles (EVs), the inconsistency of lithium-ion battery directly affects the performance and safety of EVs. A non-dissipative equalization scheme is proposed to improve the inconsistency in this paper. The bidirectional equalization circuit based on inductance as energy transferring media is designed to reduce the loss of equalization energy and improve the utilization of capacity for lithium-ion battery. To facilitate the implementation of battery equalization, the equalization strategy with voltage-difference control method is selected. Then the equalization system is built to demonstrate the feasibility of equalization scheme in MATLAB/Simulink. Finally, on the basis of field programmable gate array (FPGA), the actual hardware circuit is designed, and the equalization experiment of 4 LiFePO4 battery cells is carried out. The final range of charging voltage is 0.011V and the final standard deviation of charging voltage is 0.41%. The experimental results show that the cells actual voltage differences can converge to an acceptable range and verify the validity of the proposed non-dissipative equalization scheme.
锂离子电池作为电动汽车的动力源,其性能的不一致性直接影响到电动汽车的性能和安全性。本文提出了一种非耗散均衡方案来改善不一致性。设计了基于电感作为能量传递介质的双向均衡电路,以减少均衡能量的损失,提高锂离子电池的容量利用率。为了便于蓄电池均衡的实现,选择了电压差控制法的均衡策略。然后在MATLAB/Simulink中搭建了均衡系统,验证了均衡方案的可行性。最后,在现场可编程门阵列(FPGA)的基础上,设计了实际硬件电路,并进行了4个LiFePO4电池单体的均衡实验。充电电压最终范围为0.011V,充电电压最终标准差为0.41%。实验结果表明,电池的实际电压差可以收敛到可接受的范围内,验证了所提出的非耗散均衡方案的有效性。
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引用次数: 4
An improved artificial bee colony algorithm with history best points 一种具有历史最佳点的改进人工蜂群算法
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407519
Xingyu Xia, Xi Wang, Haidong Hu, Dongmei Wu, Hao Gao
Depending on the power global search ability, artificial bee colony algorithm attracts more attentions in recent years. But its slow convergence rate constraints its development. To better balance its exploration and exploitation abilities, we define a new point named as mean history best points (MHB) to lead the direction of bee population. The numerical experiments on the basic benchmark functions validate the efficiency of our algorithm.
人工蜂群算法凭借强大的全局搜索能力,近年来受到越来越多的关注。但其缓慢的收敛速度制约了其发展。为了更好地平衡其探索和开发能力,我们定义了一个新的点,称为平均历史最佳点(MHB),以引导蜜蜂种群的方向。在基本基准函数上的数值实验验证了算法的有效性。
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引用次数: 0
A sliding mode flux observer for predictive torque controlled induction motor drive 预测转矩控制感应电机驱动的滑模磁链观测器
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407690
Yong-zhong Lu, Jin Zhao
Predictive torque control for induction motor is a control strategy uses the model of the motor drive and an appropriate cost function to directly control torque and flux. This strategy is easy to implement but depends upon parameters of motor drive. This paper presents the design and analysis of a sliding mode flux observer to improve the parameter robustness. The observer estimates the stationary reference frame flux of the induction motor by using sliding mode terms based on the current mismatches and flux mismatches. The novelty is the method use the current mismatches to estimate the flux mismatches in the situation when the real fluxes is not available. Simulations presented in this paper prove the sliding mode observer improve the parameter robustness of predictive torque controlled induction motor drive.
异步电动机预测转矩控制是一种利用电机驱动模型和适当的成本函数直接控制转矩和磁链的控制策略。该策略易于实现,但依赖于电机驱动的参数。本文提出了一种滑模磁链观测器的设计和分析,以提高参数的鲁棒性。观测器利用基于电流不匹配和磁链不匹配的滑模项估计异步电动机的静止参考系磁链。该方法的新颖之处在于在实际通量不可用的情况下,利用电流失配来估计通量失配。仿真结果表明,滑模观测器提高了预测转矩控制异步电机驱动的参数鲁棒性。
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引用次数: 4
Modeling the superheated steam temperature with a data-driven based approach 基于数据驱动的过热蒸汽温度建模方法
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407708
Zhenhao Tang, Mingxuan Yang, Bo Zhao
Superheated steam temperature is a vital factor that affects the power generation efficiency. A data-driven based approach is proposed to modeling the superheated steam temperature. The ReliefF algorithm is employed to select the input features. In addition, a back propagation neural network(BP) model with parameters optimized by genetic algorithm (GA) is proposed to constructed the prediction model. Experiment results demonstrate that the proposed method can get better forecasting results in comparison with the PSO-BP(particle swarm optimized back propagation neural network), linear regression approach and the MLP(multi-layer perceptron) approach.
过热蒸汽温度是影响发电效率的重要因素。提出了一种基于数据驱动的过热蒸汽温度建模方法。采用ReliefF算法选择输入特征。此外,提出了一种采用遗传算法优化参数的反向传播神经网络(BP)模型来构建预测模型。实验结果表明,与粒子群优化反向传播神经网络(PSO-BP)、线性回归方法和多层感知器(MLP)方法相比,该方法可以获得更好的预测效果。
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引用次数: 1
Research on the control strategy of phase-change heat storage station with automatic generation system in power network peak regulation and frequency modulation 电网调峰调频下带自动发电系统的相变蓄热站控制策略研究
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407875
Qingqi Zhao, Yong-Xing Li, Hongyu Zhang, Tingxu Gao, Yi Yang, Wen Zheng
In this paper, the operation strategy of thermal power units after the configuration of phase change heat storage station is put forward, and the mathematical model for calculating the peak-shaving capacity of thermal power units after the allocation of phase change heat storage stations is established. Based on the analysis of frequency requirements of electric power system, puts forward the analysis of high frequency and low frequency demand method by using the discrete Fourier transform, and the actual system all day long the proportion of high frequency components are quantitatively analyzed. Analyzes the effect of two typical 300MW and 200MW heating units in Northeast China on improving peak shaving capacity after installing heat storage stations. The results show that the peak shaving capacity of the two units can be increased by 21% and 14% at a given heat load level in the middle heating period. And based on the actual system data, the paper simulates and analyzes the FM strategy of energy storage participating in automatic generation control (AGC). The results show that the flexible allocation of energy storage resources based on area regulation requirement (ARR) has a better FM effect.
本文提出了配置相变蓄热站后火电机组的运行策略,建立了配置相变蓄热站后火电机组调峰容量计算的数学模型。在分析电力系统频率需求的基础上,提出了利用离散傅立叶变换分析高频和低频需求的方法,并对实际系统全天高频分量的比例进行了定量分析。分析了东北地区两台典型300MW和200MW供热机组安装蓄热站后提高调峰能力的效果。结果表明,在供热中期一定热负荷水平下,两台机组的调峰能力可分别提高21%和14%。并以实际系统数据为基础,对储能参与自动发电控制(AGC)的调频策略进行了仿真分析。结果表明,基于面积调节需求(ARR)的储能资源柔性配置具有较好的调频效果。
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引用次数: 1
Research on anti-swaying of crane based on T-S type adaptive neural fuzzy control 基于T-S型自适应神经模糊控制的起重机抗摇研究
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8408090
Zhao Wang, Yuhuan Shi, Shurong Li
Aiming at the swing problem of container cranes in the process of loading and unloading cargo, an adaptive neural fuzzy (ANFIS) control method based on Takagi-Sugeno (T-S) model is proposed in this paper. Firstly, the mathematical model of crane trolley-hoist system was established based on Lagrange's equation. Secondly, an improved T-S fuzzy neural network is proposed. Since the SNPRP conjugate gradient method has sufficient descent and global convergence under strong search conditions. In this paper, SNPRP conjugate gradient method is used to train the premise parameters and the consequent parameters of T-S model. In order to obtain the best controller, the optimal control matrix of the system is obtained by linear quadratic optimal control using the minimum energy as an indicator, so that the neural network is used to train the ANFIS controller. Finally, the trained ANFIS controller is applied in the crane trolley-hoist system for simulation. The results show that this control method in this paper has better control effect and robustness under different rope lengths and different working conditions.
针对集装箱起重机在装卸货物过程中的摆动问题,提出了一种基于Takagi-Sugeno (T-S)模型的自适应神经模糊控制方法。首先,基于拉格朗日方程建立了起重机-小车-提升机系统的数学模型。其次,提出一种改进的T-S模糊神经网络。由于SNPRP共轭梯度法在强搜索条件下具有充分下降性和全局收敛性。本文采用SNPRP共轭梯度法对T-S模型的前提参数和结果参数进行训练。为了得到最优控制器,采用以最小能量为指标的线性二次最优控制方法得到系统的最优控制矩阵,从而利用神经网络训练ANFIS控制器。最后,将训练好的ANFIS控制器应用于起重机-小车-提升机系统中进行仿真。结果表明,该控制方法在不同绳长、不同工况下均具有较好的控制效果和鲁棒性。
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引用次数: 2
A method of coarse alignment for FOG based inertial platform system using rotation modulation 采用旋转调制方法对光纤陀螺惯性平台系统进行粗对准
Pub Date : 2018-06-01 DOI: 10.1109/ccdc.2018.8407883
Zhou Yuan, Wang Ting
A platform inertial platform system (IPS) is a kind of independent navigation system. A fiber optic gyro (FOG) based IPS can stabilize its inertial measurement unit (IMU) in inertial space using its FOG readouts, and calculate its carrier's real-time displacement and velocity using its accelerometer readouts. Alignment is the initialization process of the IPS. During the coarse alignment of the FOG based IPS, the instrument errors, random noise and base vibration can cause decline of the alignment accuracy. To improve the precision of coarse alignment, the IMU rotation modulation is used to suppress the errors of inertial instruments by utilizing the equivalent integration process contained in the averaging computation. On the stationary base, calculate the attitude matrix of the rotating IMU in each sampling period, and averaging computation can compensate the errors caused by biases of inertial instruments. When the carrier is in vibration condition, the alignment coordinate frame (CF) is introduced to assist the rotation modulation. Carry out the attitude updating within the alignment CF in each sampling period to correct the estimated attitude matrix, and the rotation modulation based method can still improve the precision of coarse alignment in vibration condition.
平台惯性平台系统(IPS)是一种独立的导航系统。基于光纤陀螺(FOG)的IPS可以利用光纤陀螺的读数稳定惯性测量单元(IMU),并利用加速度计的读数计算载体的实时位移和速度。对齐是IPS的初始化过程。在光纤陀螺的粗对准过程中,仪器误差、随机噪声和基座振动会导致对准精度下降。为了提高粗对准精度,采用IMU旋转调制,利用平均计算中的等效积分过程来抑制惯性仪器的误差。在固定基座上,计算旋转IMU在每个采样周期内的姿态矩阵,平均计算可以补偿惯性仪器偏差带来的误差。当载波处于振动状态时,引入对准坐标系(CF)辅助旋转调制。在每个采样周期的对准CF内进行姿态更新,对估计的姿态矩阵进行校正,基于旋转调制的方法在振动条件下仍能提高粗对准精度。
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引用次数: 1
Design of quad-rotor target tracking system 四旋翼目标跟踪系统设计
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407448
Chunbo Xiu, Yalong Zhao, Ruosi Wang
The accuracy of tracking based on Camshift would decrease due to the similarity between target color and background color or the target is obscured. For the above problems, improved target tracking algorithm based on Camshift is proposed in this paper. The Camshift algorithm is improved by using the contour features of the target, and Camshift search window is updated according to the contour feature of the target. Thus, interference of background and strong light is weakened. Kalman filtering algorithm is used to predict the motion state of the tracking target, enhancing the efficiency of tracking when the tracking target is obscured. Experiments show that Camshift is combined with the contour feature of target and make the tracking more effectively under the conditions of background. And the Kalman filtering algorithm is used to predict position of the target to make the tracking effectively when the target is obscured.
由于目标颜色与背景颜色相似或目标被遮挡,Camshift算法的跟踪精度会降低。针对上述问题,本文提出了基于Camshift的改进目标跟踪算法。利用目标的轮廓特征对Camshift算法进行改进,并根据目标的轮廓特征更新Camshift搜索窗口。因此,背景和强光的干扰被削弱。利用卡尔曼滤波算法对跟踪目标的运动状态进行预测,提高了跟踪目标被遮挡时的跟踪效率。实验表明,将Camshift与目标轮廓特征相结合,可以在背景条件下更有效地跟踪目标。利用卡尔曼滤波算法对目标位置进行预测,在目标被遮挡的情况下进行有效跟踪。
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引用次数: 0
A maneuver-prediction method based on dynamic bayesian network in highway scenarios 基于动态贝叶斯网络的公路机动预测方法
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407710
Junxiang Li, Xiaohui Li, Bohan Jiang, Q. Zhu
The accurate maneuver prediction for dynamic vehicles can enhance driving safety in complex environments. This paper presents a maneuver prediction method for dynamic vehicles in highway scenarios. The method effectively combines multi-frame vehicle states, road structures and interactions among vehicles. With a novel extraction algorithm of environment feature, the method infers the probability of each driving maneuver by using a Dynamic Bayesian Net­work. The experimental results demonstrate that our method can predict lane-change maneuvers at least 2 seconds before they occur in real environments with an accuracy of 84.9%.
对动态车辆进行准确的机动预测,可以提高复杂环境下的行车安全性。提出了一种公路场景下动态车辆机动预测方法。该方法有效地结合了多帧车辆状态、道路结构和车辆间的相互作用。该方法采用一种新颖的环境特征提取算法,利用动态贝叶斯网络推断出每个驾驶动作的概率。实验结果表明,该方法可以在实际环境中至少提前2秒预测变道机动,准确率为84.9%。
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引用次数: 8
期刊
2018 Chinese Control And Decision Conference (CCDC)
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