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IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society最新文献

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Sliding-mode control for systems with mismatched uncertainties via a disturbance observer 不确定不匹配系统的扰动观测器滑模控制
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119961
Jun Yang, Shihua Li, Xinghuo Yu
This paper aims to solve the sliding mode control (SMC) problem for systems with mismatched uncertainties via a disturbance observer. By designing a novel sliding surface based on the disturbance estimation, a disturbance observer based sliding mode control method is proposed to counteract the mismatched disturbance which is possibly nonvanishing. There are two distinct features for the proposed method. Firstly, the switching gain is only required to be designed greater than the magnitude of the disturbance estimation error rather than that of the disturbance, thus the chattering problem is substantially alleviated. Secondly, the proposed method retains its nominal performance, which means the proposed method acts the same as the baseline controller in the absence of disturbance. Application to a MAGLEV suspension system shows that the proposed method exhibits much better control performance than the baseline SMC and the integral SMC (I-SMC) methods, such as reduced chattering and nominal performance recovery.
本文旨在利用扰动观测器解决不匹配不确定系统的滑模控制问题。通过设计一种新的基于干扰估计的滑动面,提出了一种基于干扰观测器的滑模控制方法来抵消可能不消失的不匹配干扰。所提出的方法有两个明显的特点。首先,只要求开关增益设计大于干扰估计误差的幅度,而不要求设计大于干扰估计误差的幅度,从而大大减轻了抖振问题。其次,所提出的方法保留了其标称性能,这意味着所提出的方法在没有干扰的情况下与基线控制器相同。在磁悬浮悬浮系统中的应用表明,该方法比基线SMC和积分SMC (I-SMC)方法具有更好的控制性能,如减少抖振和名义性能恢复。
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引用次数: 228
FEA tool based model of partly coupled coils used in domestic induction cookers 家用电磁炉部分耦合线圈的有限元分析模型
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119708
C. Carretero, Óscar Lucía, J. Acero, J. Burdío
This paper proposes a computational model of an inductor system composed of two concentric coils connected each one to a half-bridge inverter. In the first step, the equivalent self-impedance of each coil and the equivalent coupling impedance between coils is obtained from numerical simulations performed by using a commercial FEA tool taking into account the frequency dependence exhibited by the induction heating system due to the presence of induced current in the system. Secondly, the frequency response for each impedance is modeled by means of an electrical network (consisting of three resistances and three inductances) suitable to model induction heating system. Then, the passive equivalent network is used in a computer aided electronic tool in order to perform accurate simulation including the half-bridge inverters and the two-coil inductor model. It is remarkable that the coil coupling implies interleaving between the output signals of the inverters, as a consequence, the control system becomes more complex. Finally, a complete induction system with a concentric double-coil inductor is simulated under different operational conditions. The numerical results are compared with experimental measurements to verify the model.
本文提出了一个由两个同轴线圈组成的电感系统的计算模型,每个线圈与半桥逆变器相连。在第一步中,考虑到感应加热系统由于系统中存在感应电流而表现出的频率依赖性,利用商业有限元工具进行数值模拟,获得了每个线圈的等效自阻抗和线圈之间的等效耦合阻抗。其次,利用适合于感应加热系统建模的电网络(由三个电阻和三个电感组成)对每个阻抗的频率响应进行建模。然后,在计算机辅助电子工具中利用无源等效网络对半桥逆变器和双线圈电感器模型进行了精确仿真。值得注意的是,线圈耦合意味着逆变器输出信号之间的交错,因此,控制系统变得更加复杂。最后,在不同的工作条件下,对具有同心圆双线圈电感的完整感应系统进行了仿真。数值结果与实验结果进行了比较,验证了模型的正确性。
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引用次数: 8
Vehicle lead-acid battery state-of-charge meter 车用铅酸蓄电池电量计
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119556
Jonathan B. Scott, Kyle Pennington, Sergej Schwarz, P. Rowe
We describe a state-of-charge, or “residual-capacity” meter for lead-acid batteries that intelligently synthesizes coulometric and terminal-voltage methods in a new algorithm to provide reliable, continuous readout of remaining capacity. Novel electronic circuit design eliminates the need to install a shunt in the vehicle. The meter learns the characteristics of a battery to which it is attached, removing the need for setup, customisation, programming or calibration at time of installation or battery replacement. The meter can thus be installed by unqualified personnel. Initial measurements suggest the design to be robust and accurate.
我们描述了一种用于铅酸电池的充电状态或“剩余容量”仪表,该仪表以一种新的算法智能地综合了库伦法和终端电压法,以提供可靠的、连续的剩余容量读数。新颖的电子电路设计消除了在车辆中安装分流器的需要。该仪表可以学习所连接电池的特性,无需在安装或更换电池时进行设置,定制,编程或校准。因此,仪表可以由不合格的人员安装。初步测量表明,该设计是可靠和准确的。
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引用次数: 4
Quasi sliding mode control with quantization in state measurement 状态测量量化的准滑模控制
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119958
S. Chakrabarty, B. Bandyopadhyay
Whenever we compute control using digital computer, the states measured need to be converted to digital word before processing in the computer. This conversion gives rise to quantization error in state measurement which in turn affects the applied control to the plant. This would cause the system dynamics to deviate from the behaviour predicted by any theoretical analysis which does not consider the effect of such quantization. Here an analysis has been presented taking into consideration the error due to quantization for Quasi Sliding Mode Control with state feedback.
当我们使用数字计算机进行控制时,需要将测量到的状态转换成数字字,然后在计算机中进行处理。这种转换在状态测量中产生量化误差,进而影响对对象的应用控制。这将导致系统动力学偏离任何不考虑这种量化影响的理论分析所预测的行为。本文对带状态反馈的准滑模控制进行了考虑量化误差的分析。
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引用次数: 8
An integrated neural network algorithm for optimum performance assessment of auto industry with multiple outputs and corrupted data and noise 基于多输出、数据损坏和噪声的汽车工业最优性能评估集成神经网络算法
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119672
Morteza Saberi, A. Azadeh, S. Tofighi, P. Pazhoheshfar
In the real world encountering with noisy and corrupted data is unavoidable. Auto industry sector (AIS) as a one of the significant industry encounters with noisy and corrupted data regarding to its rapid development. Therefore, developing the performance assessment in this situation is so helpful for this industry. As Data envelopment Analysis (DEA) could not deal with noisy and corrupted data, the alternative method(s) is very important. As one of excellent and promising feature of artificial neural networks (ANNs) are theirs flexibility and robustness in noisy situation, they are a good alternative. This study proposes a non-parametric efficiency frontier analysis method based on the adaptive neural network technique for measuring efficiency as a complementary tool for the common techniques for efficiency assessment in the previous studies. The proposed computational method is able to find a stochastic frontier based on a set of input-output observational data and do not require explicit assumptions about the function structure of the stochastic frontier. In this algorithm, for calculating the efficiency scores of auto industry in various countries, a similar approach to econometric methods has been used. Moreover, the effect of the return to scale of AIS on its efficiency is included and the unit used for the correction is selected by notice of its scale (under constant return to scale assumption). Another feature of proposed algorithm is its ability to calculate efficiency for multiple outputs. An example using real data is presented for illustrative purposes. In the application to the auto industries, we find that the neural network provide more robust results and identifies more efficient units than the conventional methods since better performance patterns are explored. To test the robustness of the efficiency results of the proposed method, the ability of proposed ANN algorithm in dealing with noisy and corrupted data is compared with Data Envelopment Analysis (DEA). Results of the robustness check show that the proposed algorithm is much more robust to the noise and corruption in input data than DEA.
在现实世界中,遇到有噪声和损坏的数据是不可避免的。汽车行业作为一个重要的行业,在其快速发展的同时,也面临着数据噪声和数据损坏的问题。因此,在这种情况下开展绩效考核对该行业有很大的帮助。由于数据包络分析(DEA)不能处理有噪声和损坏的数据,因此替代方法非常重要。由于人工神经网络在噪声环境下的灵活性和鲁棒性,是一种很好的替代方法。本文提出了一种基于自适应神经网络技术的非参数效率前沿分析方法,作为对以往研究中常用效率评估方法的补充。所提出的计算方法能够基于一组输入输出观测数据找到随机前沿,并且不需要对随机前沿的函数结构进行明确的假设。在该算法中,计算各国汽车工业的效率得分,采用了类似计量经济学方法的方法。此外,考虑了AIS的规模回报对其效率的影响,并根据其规模的通知选择用于校正的单位(在恒定规模回报假设下)。该算法的另一个特点是能够计算多个输出的效率。为了说明问题,本文给出了一个使用实际数据的例子。在汽车工业的应用中,我们发现神经网络提供了更鲁棒的结果,并且比传统方法识别出更有效的单元,因为它探索了更好的性能模式。为了检验所提方法有效性结果的鲁棒性,将所提算法与数据包络分析(DEA)进行了比较。鲁棒性检验结果表明,该算法对输入数据中的噪声和损坏的鲁棒性优于DEA。
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引用次数: 0
Intelligent identification of manufacturing operations using in-situ energy measurement in industrial injection moulding machines 工业注塑机现场能量测量制造操作的智能识别
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6120012
Xiang Min Chee, Cao Vinh Le, D. Zhang, Ming Luo, C. Pang
In energy-efficient and sustainable manufacturing systems, a good understanding of energy consumption in context of manufacturing operations is required. In this paper, we propose a generic framework for online identification of manufacturing operation states based on real-time energy data. Using Discrete Wavelet Transform (DWT) and modified universal threshold filter, time-series data is segmented by detecting stepwise changes. A two-stage Fuzzy C-Means (FCM) is then used to cluster extracted segments according to manufacturing operation states. As such, the online identification is carried out based on Euclidean distance of the incoming segments to cluster centroids. An implementation of our proposed framework on industrial injection moulding machines is presented with intensive analysis and discussion.
在节能和可持续的制造系统中,需要对制造操作中的能源消耗有很好的理解。本文提出了一种基于实时能源数据的制造运行状态在线识别的通用框架。采用离散小波变换(DWT)和改进的通用阈值滤波器,通过检测时间序列数据的逐步变化对数据进行分割。然后,根据制造操作状态,使用两阶段模糊c均值(FCM)对提取的片段进行聚类。因此,基于输入段到聚类质心的欧氏距离进行在线识别。我们提出的框架在工业注塑机上的实现进行了深入的分析和讨论。
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引用次数: 7
Integration aspects of wireless industrial automation 集成方面的无线工业自动化
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119787
A. Nagy, F. Ring, P. Loschmidt, A. Mahmood, G. Gaderer, W. Kastner
As there are many applications on the factory floor that can benefit from wireless communication, existing solutions are constantly driven towards new boundaries. The next step is to augment the capability of such solutions by enhancing network management and control to support mobility while fulfilling the real-time constraints of the system. For such a system, not only parallel operation of individual features such as real-time communication, localisation, clock synchronization, etc. is needed, their integration and interaction with each other is also important. Therefore, this paper focuses on aspects dealing with synergy of these features and shows how the individual features can affect each other in order to build a wireless system that provides functionalities which cannot be reached by its wired equivalent.
由于工厂车间的许多应用程序都可以从无线通信中受益,因此现有的解决方案不断被推向新的边界。下一步是通过增强网络管理和控制来增强此类解决方案的能力,以支持移动性,同时满足系统的实时约束。对于这样一个系统,不仅需要实时通信、定位、时钟同步等单个功能的并行运行,而且它们之间的集成和交互也很重要。因此,本文的重点是处理这些功能的协同方面,并展示了各个功能如何相互影响,以建立一个无线系统,提供有线等效系统无法达到的功能。
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引用次数: 1
Fault diagnosis in a grid-connected photovoltaic system by applying a signal approach 应用信号方法进行并网光伏系统故障诊断
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119505
Mario González, B. Raison, S. Bacha, L. Bun
An analysis of fault diagnosis in the power conversion stage of a grid-connected photovoltaic system is developed in this work. The system under study, based on the classical dc-dc boost converter and the voltage-source full-bridge inverter, is a widely installed circuit in photovoltaic applications, which is convenient for such study. The objective is to provide methods to diagnose faults in the components of the converter, in order to achieve faster preventive or corrective maintenances. The analyses, based on the frequency spectrum of the signals, are performed under different scenarios, using different control schemes and different solar irradiances received by the photovoltaic array.
本文对并网光伏系统转换阶段的故障诊断进行了分析。所研究的系统基于经典的dc-dc升压变换器和电压源全桥逆变器,是光伏应用中广泛安装的电路,便于进行此类研究。目的是提供诊断转换器组件故障的方法,以便实现更快的预防性或纠正性维护。在不同的场景下,采用不同的控制方案和光伏阵列接收不同的太阳辐照度,根据信号的频谱进行分析。
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引用次数: 25
A five level dual buck full bridge inverter with neutral point clamp for grid connected PV application 用于并网光伏应用的带中性点钳的五电平双降压全桥逆变器
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119451
Nong Sun, Li Zhang, Y. Xing, Ming Xu, Yu Fang, Xudong Ma
A neutral point clamped five-level dual buck full bridge grid-connected inverter, derived from a three-level dual buck full bridge inverter (TLDBFBI) combining two input split-voltage capacitors and two clamping branches, is proposed. The voltage step on both the filter inductors and the switching devices in the new topology is only half of the input voltage, which offers a smaller size of the inductors. Only one of the switches is operated at high switching frequency at any time, which offers lower switching losses. Moreover, the operation principle and modulation of the proposed topology are analyzed in detail, and a prototype is built. Experimental results show that compared with TLDBFBI, the efficiency and power density are improved by the proposed neutral point clamped five-level dual buck full bridge inverter (FLDBFBI).
提出了一种中点箝位五电平双降压全桥并网逆变器,该逆变器是在三电平双降压全桥逆变器(TLDBFBI)的基础上由两个输入分压电容和两个箝位支路组成的。在新的拓扑结构中,滤波器电感器和开关器件的电压阶跃都只有输入电压的一半,这使得电感器的尺寸更小。在任何时刻,只有一个开关在高开关频率下工作,从而降低了开关损耗。此外,还详细分析了该拓扑的工作原理和调制方式,并搭建了样机。实验结果表明,与TLDBFBI相比,所提出的中性点箝位五电平双降压全桥逆变器(FLDBFBI)的效率和功率密度都有所提高。
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引用次数: 7
Scalability of Time Synchronized wireless sensor networking 时间同步无线传感器网络的可扩展性
Pub Date : 2011-11-01 DOI: 10.1109/IECON.2011.6119789
S. Zats, R. Su, T. Watteyne, K. Pister
Existing commercial wireless sensor network solutions use Time-Synchronized Channel Hopping (TSCH) to achieve an end-to-end reliability higher than 99.9% and industry-accepted network lifetime (5–10 years on batteries). In these types of networks, once nodes synchronize, they follow a schedule which determines the time and frequency of the channel that is used to transmit and receive. Standards such as WirelessHART apply this technique. This paper addresses the ability to scale such a scheduling approach for specific applications.
现有的商用无线传感器网络解决方案使用时间同步信道跳变(TSCH)来实现高于99.9%的端到端可靠性和行业认可的网络寿命(电池5-10年)。在这些类型的网络中,一旦节点同步,它们就遵循一个时间表,该时间表决定了用于发送和接收的信道的时间和频率。诸如WirelessHART之类的标准就应用了这种技术。本文讨论了为特定应用程序扩展这种调度方法的能力。
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引用次数: 14
期刊
IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society
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