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2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)最新文献

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Implementation of an 8/6 switched reluctance MOSFET current controller: simulation study and experimental tests 8/6开关磁阻MOSFET电流控制器的实现:仿真研究和实验测试
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267925
S. Rafael, A. Pires, P. J. Costa Branco
This paper describes the systematic procedure for designing a MOSFET power converter for an 8/6-switched reluctance machine. Starting from establishing its topology and subsystems, a Matlab simulation approach is initially developed to design its driving circuits, test different converter operating modes, and phase current controllers. Experimental tests are performed to verify the converter functionality and performance, comparing, correcting and discussing the results obtained with simulation analysis.
本文介绍了用于8/6开关磁阻电机的MOSFET功率变换器的系统设计过程。从建立其拓扑结构和子系统开始,初步开发了Matlab仿真方法来设计其驱动电路,测试不同的变换器工作模式和相电流控制器。通过实验验证了该变换器的功能和性能,并对仿真分析结果进行了比较、校正和讨论。
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引用次数: 2
Adaptive sliding-mode observer for field oriented sensorless control of SPMSM 基于自适应滑模观测器的SPMSM无场定向控制
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267984
G. L. Cascella, N. Salvatore, L. Salvatore
This paper proposes a new scheme to guarantee speed sensorless control and optimal field orientation of surface permanent magnet synchronous motors (SPMSMs) even if parameter deviations occur and initial rotor position is unknown. A novel adaptive sliding-mode observer is used for field oriented speed sensorless control. First the induced e.m.f. components are observed using the sliding-mode technique with an adaptive switching gain. Then a low-pass filter with an adaptive amplitude compensator, that works as derivative observer, is used to get rid of the chattering noise of estimated e.m.f. components and to calculate rotor speed and position. The current components in rotor reference frame are estimated from the active and reactive electromagnetic torques calculated in both the stationary reference frame and the estimated rotor one. The latter is also used as control reference frame. Inverter, filters and observer cause unavoidable and unpredictable time-delay in rotor position estimation, so that the control reference frame is delayed as to the actual rotor one. As a consequence, field orientation and maximum torque/current ratio do not occur when the desired field oriented current references are imposed in the control reference frame. An original field orientation PI controller is used to provide the appropriate current references in the control reference frame. Test results are presented to prove the approach effectiveness.
提出了一种在参数偏差和初始转子位置未知的情况下,保证表面永磁同步电动机无速度传感器控制和最佳磁场定向的新方案。将一种新的自适应滑模观测器应用于面向场的无速度传感器控制中。首先,利用具有自适应开关增益的滑模技术观察了感应电动势分量。然后利用带自适应幅度补偿器的低通滤波器作为导数观测器,去除估计的电动势分量的抖振噪声,计算转子的转速和位置。根据静止参照系和转子参照系中计算的有功和无功电磁转矩估计转子参照系中的电流分量。后者也可用作控制参考系。逆变器、滤波器和观测器在转子位置估计中会产生不可避免的、不可预测的时滞,使控制参考系相对于实际的转子参考系产生延迟。因此,当在控制参考系中施加所需的磁场定向电流参考时,磁场定向和最大转矩/电流比不会发生。原始的场方向PI控制器用于在控制参考系中提供适当的电流参考。实验结果证明了该方法的有效性。
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引用次数: 21
New AC-AC converter topologies 新的AC-AC转换器拓扑结构
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267287
C. Petry, J. Fagundes, I. Barbi
This paper presents new AC-AC converter topologies as AC voltage regulators. Operation stages, static gain expressions, main waveforms and simulation results are shown. Laboratory experimental results for 1 kVA converters are also presented, which demonstrates the feasibility of the study carried out.
本文提出了一种新的交流-交流变换器拓扑结构作为交流电压调节器。给出了工作阶段、静态增益表达式、主要波形及仿真结果。最后给出了1kva变换器的室内实验结果,验证了所做研究的可行性。
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引用次数: 12
Random weights search in compressed neural networks using overdetermined pseudoinverse 基于超定伪逆的压缩神经网络随机权搜索
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267901
M. Manic, B. Wilamowski
Proposed algorithm exhibits 2 significant advantages: easier hardware implementation and robust convergence. Proposed algorithm considers one hidden layer neural network architecture and consists of following major phases. First phase is reduction of weight set. Second phase is gradient calculation on such compressed network. Search for weights is done only in the input layer, while output layer is trained always with pseudo-inversion training. Algorithm is further improved with adaptive network parameters. Final algorithm behavior exhibits robust and fast convergence. Experimental results are illustrated by figures and tables.
该算法具有硬件实现简单、收敛性强等优点。该算法考虑一种隐层神经网络结构,包括以下几个主要阶段。第一阶段是减少权值集。第二阶段是在压缩后的网络上进行梯度计算。权重搜索只在输入层进行,而输出层总是通过伪反演训练进行训练。采用自适应网络参数对算法进行了进一步改进。最终算法表现出鲁棒性和快速收敛性。实验结果用图表说明。
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引用次数: 8
Electrostatic linear servo motor with built-in position sensor for vacuum environment 静电直线伺服电机,内置位置传感器,适用于真空环境
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267946
A. Yamamoto, H. Yasui, T. Nishijima, T. Higuchi
A high-power electrostatic linear servo motor stage for vacuum environment has been developed. The stage is equipped with integrated built-in position sensor that uses the motor's electrode for position sensing. This stage is characterized by compact structure and low magnetic field emission. It can work within sufficiently small space in a vacuum chamber without disturbing surrounding electro-magnetic field. Therefore this motor stage could be highly compatible with many vacuum applications that utilize electron beam. In this paper, basic structure of the motor is described. The motor is sized 145 mm in length, 125 mm in width, and 40 mm in height. The stage is equipped with two thin plastic films, which contain three-phase electrodes aligned with an interval of 200 /spl mu/m. Those two films are attached to slider and stator, respectively, to generate electrostatic thrust force. Linear cross-roller guide supports the slider. The stroke is 40 mm. The estimated thrust force in 10/sup -3/ Pa is 1.2 N with an applied voltage of 1.6 kV/sub 0-p/. We have developed built-in position sensor for positioning servo control. Detail of built-in position sensor and results of positioning control are reported.
研制了一种适用于真空环境的大功率静电直线伺服电机工作台。舞台配备了集成的内置位置传感器,使用电机的电极进行位置感应。该阶段的特点是结构紧凑,磁场发射小。它可以在真空室足够小的空间内工作,而不干扰周围的电磁场。因此,这个电机级可以与许多利用电子束的真空应用高度兼容。本文介绍了该电机的基本结构。电机长度为145毫米,宽度为125毫米,高度为40毫米。台上装有两层塑料薄膜,薄膜上装有三相电极,电极排列间隔为200 /spl mu/m。这两种薄膜分别附着在滑块和定子上,产生静电推力。直线交叉滚子导轨支撑滑块。行程为40毫米。在10/sup -3/ Pa范围内的推力估计为1.2 N,外加电压为1.6 kV/sub 0-p/。我们开发了用于定位伺服控制的内置位置传感器。介绍了嵌入式位置传感器的设计细节和定位控制结果。
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引用次数: 7
Robotized system for in-pipe inspection 自动化管道内检测系统
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267963
R. Costa, N.R.S. dos Reis, L. Hsu, A. J. Peixoto, P. Gomes
This paper reports the development and experimental evaluation of robotized system devised to perform two kinds of measurements inside a pipeline: the thickness of the internal wall painting layer and the internal radius. The thickness measurement allows the inspection of the painting layer quality and, by measuring several radii, it is possible to estimate that pipeline transversal section shape. The proposed scheme is shown to yield very satisfactory results on an actual pipeline.
本文报道了用于管道内壁涂漆层厚度和管道内半径两种测量的机器人系统的开发和实验评价。厚度测量允许检查油漆层的质量,并通过测量几个半径,有可能估计管道的横截面形状。该方案在实际管道上取得了令人满意的效果。
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引用次数: 2
Voltage spectra of three-level inverters 三电平逆变器的电压谱
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267326
S. Halász
In the area of high voltages and powers, a high quality inverter-fed ac drive is more easily obtained by the use of multi-level inverters. For three-level inverters three different PWM control regions can be introduced where different two-phase (discontinuous) PWM strategies and the different three-phase ones should be applied. This paper deals with the analysis of voltage spectra of different PWM methods for region I of three-level inverters and especially with those two PWM methods that are not used in the case of two-level inverters. The derivation of the analytical equations of motor voltage harmonics for these PWM methods is given. The comparisons of the voltage spectra of the possible PWM methods are presented. It is shown that for the first half of region I (low voltage area) the best solution is the use of dipolar modulation. However, for the second half of this region the harmonic losses associated with dipolar modulation can be sharply decreased by the application of the other three-phase PWM technique. At the same time for two-level inverters this PWM technique produces no acceptable solution.
在高压大功率领域,采用多级逆变器更容易获得高质量的逆变供电交流驱动。对于三电平逆变器,可以引入三个不同的PWM控制区域,分别采用不同的两相(不连续)PWM策略和不同的三相PWM策略。本文分析了三电平逆变器I区不同PWM方法的电压谱,特别是两电平逆变器中不采用的两种PWM方法。给出了这两种PWM方法的电机电压谐波解析方程的推导。对各种PWM方法的电压谱进行了比较。结果表明,对于I区(低电压区)的前半部分,最好的解决方案是使用偶极调制。然而,对于该区域的后半部分,通过应用其他三相PWM技术,与偶极调制相关的谐波损耗可以急剧降低。同时,对于双电平逆变器,这种PWM技术无法产生可接受的解决方案。
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引用次数: 0
Robot assembly trajectory generation using form feature driven robot process model 利用形状特征驱动机器人装配轨迹生成机器人过程模型
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267906
L. Horváth, I. Rudas, J. Tar
Researchers and practitioners have attempted to solve problem of robot control by using of well-proved product models. Existing product modeling methods offer quasi integration because appropriate integrated robot process model is not available. The authors propose a modeling of the robot system that has the capability of integrated description of product, robot and robot process. Advanced concepts as feature and associativity definitions together with task oriented robot process gained an extended application in the proposed model. This paper presents the new modeling for integrated application of part, assembly and robot process models at robot assembly of mechanical products. The main purpose of this integration is product model driven definition of robot assembly trajectories. The main contribution is an attempt to define shapes and part positions for robot assembly by using of form features instead of geometric elements. Form feature model objects carry intent of engineers for technical content of modeled environment. The paper introduces actual issues of robot assembly and outlines the concept of the authors for product model driven modeling of robot assembly. Information for assembly in feature based product model and robot process model features are explained. Following this, an extended feature concept for modeling of robot system is discussed. Finally, integrated model of robot assembly system and role of form features in it are concluded.
研究者和实践者试图通过使用经过验证的产品模型来解决机器人控制问题。现有的产品建模方法由于没有合适的集成机器人过程模型,只能实现准集成。提出了一种能够对产品、机器人和机器人过程进行综合描述的机器人系统建模方法。在该模型中,特征和关联定义等先进概念以及面向任务的机器人过程得到了广泛的应用。提出了在机械产品机器人装配中零件、装配和机器人过程模型集成应用的新建模方法。该集成的主要目的是产品模型驱动的机器人装配轨迹定义。主要贡献是试图定义形状和零件的位置为机器人装配使用的形状特征,而不是几何元素。表单特征模型对象承载了工程师对建模环境技术内容的意图。本文介绍了机器人装配的实际问题,概述了作者对机器人装配的产品模型驱动建模的概念。说明了基于特征的产品模型和机器人过程模型特征中的装配信息。在此基础上,讨论了机器人系统建模的扩展特征概念。最后,总结了机器人装配系统的集成模型和形态特征在其中的作用。
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引用次数: 4
A novel high frequency ac voltage regulator with active power factor correction 一种新型有源功率因数校正高频交流稳压器
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267258
F.D. Dantas, C. Canesin
This paper describes a novel high frequency ac voltage-regulator using a single ended primary inductance converter as power stage, and active power factor correction through the use of variable hysteresis control technique. The main advantage of this ac voltage-regulator concerns with the smaller volume, and size than the conventional ones. Nowadays, due to power quality standards, high input power factor is a necessity for power electronic converters, to perform that the input current total harmonic distortion (THB) fits into the limits of the standards, like IEC 61000-3-2 limits. It should be noticed that the input current THD for the novel ac high frequency voltage-regulator are in agreement with the requirements defined in the IEC 61000-3-2 standards. This paper presents a complete analysis, design and simulation results for a prototype rated at 300 W, operating with variable switching frequency (30 Hz until 90 kHz), and 127Vrms of nominal output voltages.
本文介绍了一种以单端初级电感变换器为功率级,采用变磁滞控制技术进行有源功率因数校正的新型高频交流稳压器。这种交流电压调节器的主要优点是体积更小,尺寸比传统的。如今,由于电力质量标准的要求,高输入功率因数是电力电子转换器的必要条件,以执行输入电流总谐波失真(THB)符合标准的限制,如IEC 61000-3-2限制。需要注意的是,新型交流高频稳压器的输入电流THD符合IEC 61000-3-2标准的要求。本文介绍了一个额定功率为300w,开关频率为30hz至90khz,额定输出电压为127Vrms的样机的完整分析、设计和仿真结果。
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引用次数: 6
Evaluation of the timing properties of two control networks: CAN and PROFIBUS CAN和PROFIBUS两种控制网络的时序特性评价
Pub Date : 2003-06-09 DOI: 10.1109/ISIE.2003.1267936
M.M. Santos, M. Stemmer, F. Vasques
Due to the increased availability of low cost network technology, the use of networks to interconnect sensors, actuators and controllers is becoming widely accepted for the implementation of feedback control systems. Such type of feedback implementation, wherein the control loops are closed through a real-time network, are called network controlled systems (NCS). When implementing a NCS, the underlying communication network must provide a timely communication service, which must be adequate to fulfill the control application requirements. Therefore, the assessment of the network responsiveness to the real-time requirements of the control application is a fundamental issue. Both PROFIBUS and CAN networks are usually considered suitable to support small-scale NCS, due to their real-time capabilities. However their temporal responsiveness is highly dependent on both the timing characteristics of the supported message streams, such as its periodicity and the related message lengths. In this paper, we compare the timing properties of both CAN and PROFIBUS control networks. Basically, we assess their capability to support network controlled systems, through the evaluation of the related worst-case message's response time. A small example of a NCS is then used to assess the capability of the CAN control network to fulfill control application requirements.
由于低成本网络技术的可用性增加,使用网络互连传感器,执行器和控制器正被广泛接受用于实施反馈控制系统。这种类型的反馈实现,其中控制回路通过实时网络关闭,被称为网络控制系统(NCS)。在实现NCS时,底层通信网络必须提供及时的通信服务,该服务必须足以满足控制应用的要求。因此,评估网络对控制应用程序实时需求的响应性是一个基本问题。由于具有实时性,PROFIBUS和CAN网络通常被认为适合支持小规模的NCS。然而,它们的时间响应性高度依赖于所支持的消息流的定时特征,例如其周期性和相关的消息长度。在本文中,我们比较了CAN和PROFIBUS控制网络的时序特性。基本上,我们通过评估相关最坏情况消息的响应时间来评估它们支持网络控制系统的能力。然后使用一个小的NCS示例来评估CAN控制网络满足控制应用需求的能力。
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引用次数: 10
期刊
2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692)
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