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2011 6th IEEE Conference on Industrial Electronics and Applications最新文献

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Correlation coefficient stationary series method for gyroscope random drift 陀螺仪随机漂移的相关系数平稳序列法
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5975969
Zhihua Wang, Chengrui Liu, H. Fu
Gyroscope plays an important role in navigational systems and its drift has a direct influence on the precision. However, the gyroscope random drift series in practice are not traditional stationary time series for their time-varying means and variances, and large error cannot be avoided by traditional processing method. It is found that the statistical property of most gyroscope random drift series can meet the requirements defined by correlation coefficient stationary series. The analysis method of gyroscope drift series based on correlation coefficient stationary series model is established in this paper. The correlation coefficient stationarity testing method for gyroscope random drift series is discussed firstly. And then the modeling method process is presented. The proposed modeling procedure can efficiently improve the compensating accuracy of gyroscope random drift, because the presented method satisfactorily explains the nonstationary behavior of the gyroscope random drift series commonly existing in practice.
陀螺仪在导航系统中起着重要的作用,其漂移直接影响导航系统的精度。但实际陀螺随机漂移序列的均值和方差随时间变化,并不是传统的平稳时间序列,传统的处理方法无法避免较大的误差。研究发现,大多数陀螺仪随机漂移序列的统计特性都能满足相关系数平稳序列所定义的要求。建立了基于相关系数平稳序列模型的陀螺仪漂移序列分析方法。首先讨论了陀螺仪随机漂移序列的相关系数平稳性测试方法。然后介绍了建模方法流程。该方法较好地解释了实际中普遍存在的陀螺仪随机漂移序列的非平稳性,有效地提高了陀螺仪随机漂移的补偿精度。
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引用次数: 2
Dynamic modeling of SI/HCCI free-piston engine generators SI/HCCI自由活塞发动机发电机的动态建模
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5975849
C. Chiang, Jing-Long Yang, Shao-Ya Lan, T. Shei, W. Chiang, Bo-Liang Chen
For the purpose of model-based analysis and control design, a dynamic physics-based model for free-piston engine generator is developed in this paper. The physics-based model contains 16 states, which include piston dynamics, port and cylinder gas filling dynamics and thermal dynamics. Homogeneous charge compression ignition (HCCI) combustion is employed for better efficiency and reduced emissions, whereas spark ignition (SI) combustion can be used for quick start. Equipped with electric mechanical valves (EMV) and direct injection, the free-piston engine generator is deemed to achieve optimized and clean combustion. Key features in this dynamic model include the port and cylinder filling dynamics and cycle-to-cycle coupling between the piston motion and combustion process. The effects of the amount of fuel, valve timings and load constant on the important performance variables such as piston dynamics and combustion timings are evaluated via simulation.
为了进行基于模型的分析和控制设计,本文建立了自由活塞发动机发电机的动态物理模型。基于物理的模型包含16种状态,包括活塞动力学、端口和气缸气体填充动力学以及热动力学。采用均匀装药压缩点火(HCCI)燃烧可提高效率和减少排放,而火花点火(SI)燃烧可用于快速启动。自由活塞发动机发电机配备了电动机械阀(EMV)和直喷,被认为实现了优化和清洁燃烧。该动力学模型的关键特征包括进气口和气缸填充动力学以及活塞运动和燃烧过程之间的循环耦合。通过仿真分析了燃油量、气门正时和负荷常数对活塞动力学和燃烧正时等重要性能变量的影响。
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引用次数: 6
Cascade control strategy design for electromagnetic guidance system 电磁制导系统的串级控制策略设计
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5976074
Jeng-Dao Lee, Zhi-Bin Wang, Jia-Qi Lu, Xuan-Ren Chen, Rou-Yong Duan
This work simulates lateral motion in magnetic levitation (maglev) transportation systems using a novel electromagnetic guidance device. First, current control modules, a pulse-width-modulation (PWM) controller and buck converter, are used for driving electromagnets. The electromagnetic guidance system, which has two current control modules, a gap controller, and a bipolar switching mechanism, controls the gap between the moving platform and rail. A cascade dynamic model, which has a current control module, electromagnet, and moving platform, is established. Based on the dynamic model, a novel cascade sliding mode (CSM) controller and a cascade sliding-mode-based genetic algorithm control (CSGAC) scheme are ultilized. Finally numerical simulations are done to verify the control performance of the proposed control systems.
本文利用一种新型的电磁导引装置模拟了磁悬浮运输系统中的横向运动。首先,电流控制模块,脉冲宽度调制(PWM)控制器和降压转换器,用于驱动电磁铁。电磁制导系统具有两个电流控制模块、一个间隙控制器和一个双极开关机构,控制移动平台与导轨之间的间隙。建立了由电流控制模块、电磁铁和移动平台组成的串级动力学模型。在动力学模型的基础上,采用了一种新的串级滑模(CSM)控制器和基于串级滑模的遗传算法控制方案。最后通过数值仿真验证了所提控制系统的控制性能。
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引用次数: 3
A novel sensor-less induction motor based on fuzzy sliding-mode control 一种基于模糊滑模控制的新型无传感器感应电动机
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5976063
Yue Yuntao, Lin Yan
A novel fuzzy sliding-mode structure have been proposed for the model reference adaptive system(MRAS) based sensor-less control of an induction motor in this paper. The design includes a hybrid MRAS from measured stator terminal voltages and currents. The estimated speed is used as feedback in an indirect vector control system achieving the speed control without the use of shaft mounted transducers. Fuzzy Sliding-Mode Structure include two nonlinear controllers, one of sliding mode type and the other PI-fuzzy logic based, define a new control structure. Both controllers are combined by means of an expert system based on Takagi-Sugeno fuzzy reasoning. The sliding mode controller acts in the steady state. The new structure embodies the advantages that both nonlinear controllers offer sliding mode controllers increasing system stability limits and PI-like fuzzy logic based controllers reducing the chattering in permanent state. The scheme has been implemented and experimentally validated.
本文提出了一种基于模型参考自适应系统(MRAS)的异步电动机无传感器控制的模糊滑模结构。该设计包括一个由测量的定子端子电压和电流组成的混合MRAS。估计的速度被用作间接矢量控制系统的反馈,实现了不使用轴装传感器的速度控制。模糊滑模结构包括两个非线性控制器,一个是滑模型控制器,另一个是基于pi -模糊逻辑的控制器,定义了一种新的控制结构。通过基于Takagi-Sugeno模糊推理的专家系统将两个控制器组合在一起。滑模控制器作用于稳态。新结构体现了非线性控制器提供滑模控制器提高系统稳定性极限和基于pi的模糊逻辑控制器减少永久状态下的抖振的优点。该方案已实现并经过实验验证。
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引用次数: 3
Target location of Loitering Munitions based on image matching 基于图像匹配的游荡弹药目标定位
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5975657
Wang Zhifei, W. Hua
This paper presented a method for high accuracy ground target localization by using Loitering Munitions (LM) equipped with a video camera sensor. Firstly, based on tray tracing ground target geo-location was used for comparison against our approach, and the calculation from pixel to world coordinates can be done. Then, in order to remove small details hough transform was used to image alignment and a median filter was applied which are visible from the sensed image but not visible from the reference image. Finally, based on bifurcation extraction a novel edge detection method and an image matching algorithm were proposed. This method did not require accurate knowledge of the aircraft position, attitude and high performance sensors. Therefore, it is especially suitable for LM which did not have capability to carry accurate sensors due to their limited play weight and power resources. The results of simulation experiments and theory analyzing demonstrate that high accuracy ground target localization is reached also using low performance sensors, and achieved the real time need. Additional, comparing with the matching algorithm based on normal cross correlation, the proposed algorithm has lower computational burden and faster processing speed, which can meet the real-time requirements for scene matching.
提出了一种利用装有摄像机传感器的游荡弹药进行高精度地面目标定位的方法。首先,利用基于托盘跟踪的地面目标地理位置与我们的方法进行比较,实现了从像素到世界坐标的计算;然后,为了去除小细节,使用霍夫变换对图像进行对齐,并应用中值滤波器,这些小细节在感测图像中可见,但在参考图像中不可见。最后,提出了一种基于分岔提取的边缘检测方法和图像匹配算法。这种方法不需要精确了解飞机的位置、姿态和高性能传感器。因此,它特别适用于由于发挥重量和功率资源有限而没有能力携带精确传感器的LM。仿真实验和理论分析结果表明,采用低性能传感器也能实现高精度的地面目标定位,并达到实时性要求。此外,与基于正态互相关的匹配算法相比,该算法计算量更小,处理速度更快,能够满足场景匹配的实时性要求。
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引用次数: 3
Series-resonant battery charger with synchronous rectifiers for LiFePO4 battery pack 带同步整流器的串联谐振电池充电器,适用于磷酸铁锂电池组
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5975601
Chang-Hua Lin, Chien-Ming Wang, Min-Hsuan Hung, Ming-Hsuan Li
This paper presents a battery charger for LiFePO4 battery pack based on a series-resonant topology. The synchronous rectification technique is incorporated into the proposed system to improve the charging performance. Moreover, the frequency domain analysis and the equivalent circuit of each operation mode are descried and conducted. The frequency characteristics of the proposed system are also detailed from the derived mathematical models. Besides, a simple charging strategy is adopted to verify the feasibility. All the experimental results agree with the theoretical predictions.
提出了一种基于串联谐振拓扑结构的磷酸铁锂电池组充电器。系统采用同步整流技术,提高了充电性能。并对各工作模式的频域分析和等效电路进行了描述和分析。根据所建立的数学模型,详细分析了系统的频率特性。此外,还采用了一种简单的充电策略来验证其可行性。实验结果与理论预测一致。
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引用次数: 5
Model construction and verification of a BLDC motor using MATLAB/SIMULINK and FPGA control 基于MATLAB/SIMULINK和FPGA控制的无刷直流电机模型构建与验证
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5975884
Ming‐Fa Tsai, Tran Phu Quy, Bo-Feng Wu, C. Tseng
This paper presents the model construction of a brushless DC motor via MATLAB/SIMULINK and FPGA control, so that one can evaluate the performance of the BLDC motor control with various control schemes using MATLAB/SIMULINK. The constructed model consists of a BLDC motor dynamics block, a Hall-sensor signals generation block, a back-emf block, and a PWM-generation logic block. In order to evaluate the model, various cases of simulation studies are carried out. The control and PWM-generation logic block then can be transferred to digital hardware circuit in VHDL hardware description language for co-simulation verification in the MATLAB/SIMULINK and ModelSim environment. Experiment results by using FPGA control are also obtained to verify the correctness of the constructed BLDC model.
本文利用MATLAB/SIMULINK对无刷直流电动机进行了建模和FPGA控制,从而可以利用MATLAB/SIMULINK对各种控制方案对无刷直流电动机的控制性能进行评价。所构建的模型由无刷直流电机动力学模块、霍尔传感器信号生成模块、反电动势模块和pwm生成逻辑模块组成。为了对模型进行评价,进行了各种仿真研究。然后用VHDL硬件描述语言将控制和pwm生成逻辑块转换为数字硬件电路,在MATLAB/SIMULINK和ModelSim环境下进行联合仿真验证。通过FPGA控制的实验结果验证了所构建的无刷直流模型的正确性。
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引用次数: 58
Some results on Kalman filtering with linear equality state constraints 线性等式状态约束下卡尔曼滤波的一些结果
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5975734
Chaoyang Jiang, Yong-An Zhang
This paper addresses the estimation problem for linear system with linear equality state constraints. We review the existing state projection method and present a simple way to find the optimal filter gain of the constrained Kalman filter. Then, we transform the constrained system into a reduced-order model and construct a reduced-order Kalman filter for this estimation problem. Next, we discuss the properties and error covariance matrices of different estimates. Finally, a vehicle tracking example is provided to compare the effectiveness of these estimators.
研究具有线性等式状态约束的线性系统的估计问题。回顾了现有的状态投影方法,提出了一种求约束卡尔曼滤波器最优增益的简单方法。然后,我们将约束系统转化为一个降阶模型,并构造了一个降阶卡尔曼滤波器。接下来,我们讨论了不同估计的性质和误差协方差矩阵。最后,以车辆跟踪为例,比较了这些估计器的有效性。
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引用次数: 2
Effects of different double-bundle anterior cruciate ligament reconstructions on femur stress 不同双束前交叉韧带重建对股骨应力的影响
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5975878
Hongguang Zheng, Rongying Huang, Qiang Xu, H. Zheng
No quantitative data were reported in the literature regarding the effects of different techniques in double-bundle ACL reconstruction on femur stress. In this study models of the intact, double-femoral double-tibial tunnel the anterior cruciate ligament reconstruction (DF-DT), single-femoral double-tibial tunnel the anterior cruciate ligament reconstruction (SF-DT) were built at flexion angles of 0°, 25°, 60° and 80° based on the MRI images of the normal human. Then combined torques (10 N-m valgus and 5 N-m external femoral torques) were applied to the three pairs of three-dimensional finite element models, the biomechanical effects of different techniques in double-bundle anterior cruciate ligament reconstructions on femur stress were investigated through the maximum von Mises stresses of the transverse and sagittal sections. With the techniques of SF-DT, the stresses in the bone around the tunnel are more closed to those with the intact ACL. That is to say, SF-DT may have advantages over DF-DT. This study not only provides technical data to improve the reconstruction quality, but also supplies a method for the assessment of ACL reconstruction.
文献中没有关于双束前交叉韧带重建中不同技术对股骨应力影响的定量数据报道。本研究以正常人MRI图像为基础,分别以0°、25°、60°和80°的屈曲角度建立完整的双股双胫骨隧道前交叉韧带重建(DF-DT)模型和单股双胫骨隧道前交叉韧带重建(SF-DT)模型。然后对三对三维有限元模型施加10 N-m外翻和5 N-m股外扭矩的组合扭矩,通过横切面和矢状面最大von Mises应力研究双束前交叉韧带重建中不同技术对股骨应力的生物力学影响。使用SF-DT技术,隧道周围骨的应力更接近完整前交叉韧带。也就是说,SF-DT可能比DF-DT有优势。本研究不仅为提高ACL重建质量提供了技术数据,也为ACL重建的效果评估提供了一种方法。
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引用次数: 2
Robot software architecture based on IPv6 基于IPv6的机器人软件架构
Pub Date : 2011-06-21 DOI: 10.1109/ICIEA.2011.5975858
Ying Zou, Tianmiao Wang, Hongxing Wei, Miao Liu, Chengcheng Li, Xiaodong Lu
Componentization is an important method to improve the reusability of robot software and reduce the difficulty of system design. To reuse robot software component on different robot hardware, the logical abstraction and standardization of hardware is critical. In this paper, an IPv6 based robot structure is presented to reuse the robot hardware and software resources. Firstly the software architecture and static model and run-time model of component are analyzed. Secondly the IPv6 network structure for robots is presented to solve logical separations and the connections of logical network from hardware. And a 6-DOF joint robot structure instance is constructed to illustrate that the application can be implemented by invoking reusable components and logical network devices mapped in IPv6. Finally two 6-DOF joint robots are introduced for experiment, and the point-to-point procedure running on these two robots establishes that the presented architecture is effective for robot software reuse.
组件化是提高机器人软件可重用性和降低系统设计难度的重要手段。为了在不同的机器人硬件上重用机器人软件组件,硬件的逻辑抽象和标准化是至关重要的。本文提出了一种基于IPv6的机器人结构,实现了机器人软硬件资源的重用。首先分析了软件体系结构、组件的静态模型和运行时模型;其次,提出了机器人的IPv6网络结构,解决了逻辑网络与硬件的分离和连接问题。并构造了一个六自由度关节机器人结构实例,说明该应用可以通过调用可重用组件和映射在IPv6中的逻辑网络设备来实现。最后介绍了两个六自由度关节机器人进行实验,并在这两个机器人上运行了点对点程序,验证了该体系结构对机器人软件重用的有效性。
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引用次数: 4
期刊
2011 6th IEEE Conference on Industrial Electronics and Applications
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