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2013 International Conference on System Science and Engineering (ICSSE)最新文献

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Embedded 8-bit AES in wireless Bluetooth application 在无线蓝牙应用中嵌入8位AES
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614638
Chi-Wu Huang, Shao-Wei Kuo, C. Chang
This paper presents an 8-bit AES direct FPGA hardware implementation of CFB/OFB operations without using the Block RAM (BRAM). The 8-bit AES core is then embedded through a microcontroller to interface with Bluetooth wireless for performing encryption or decryption. Two sets of the embedded systems are configured together to experiment the AES operation of the image encryption and decryption through wireless communication achieved the baud rate of 0.23 Megabits per second (Mbps). CFB/OFB operations have two advantages over ECB operation; one is the low area circuit design, and the other is the complete hiding of input patterns in plain image with identical colors. Though CFB/OFB implementation without BRAM has a little larger slice area then the implementation with RAM, yet the non-BRAM in ASIC implementation achieved only 2.2K gates, synthesized using 0.18μm technology, which is the smallest gate count for the 8-bit ASIC implementation ever proposed.
本文提出了一种不使用块RAM (BRAM)的8位AES直接FPGA硬件实现CFB/OFB操作。然后通过微控制器嵌入8位AES核心,与蓝牙无线接口进行加密或解密。将两套嵌入式系统配置在一起,通过无线通信进行图像加解密的AES操作实验,波特率达到0.23兆比特每秒(Mbps)。CFB/OFB操作与欧洲央行操作相比有两个优势;一种是低面积电路设计,另一种是将输入图案完全隐藏在具有相同颜色的纯图像中。虽然没有BRAM的CFB/OFB实现比有RAM的实现具有更大的片面积,但ASIC实现中的非BRAM仅实现2.2K门,使用0.18μm技术合成,这是迄今为止提出的8位ASIC实现中最小的门数。
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引用次数: 6
Employing 2DoF PID controllers to improve greenhouse climate system robustness 采用二自由度PID控制器提高温室气候系统的鲁棒性
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614639
E. H. Gurban, G. Andreescu
The mathematical models of the greenhouse environment are MIMO systems, characterized by a high coupling, nonlinearity, parameter variation and they are highly influenced by disturbances. This paper uses a well-known greenhouse climate model with measurable external disturbances and a feedback-feedforward linearization, decoupling and disturbance compensations technique. Greenhouse climate model parameters/disturbances, which are susceptible to wrong estimation, are identified, i.e., heat transfer coefficient (UA), shading and leaf area index coefficient (α), and intercepted solar radiant energy (Si). The system response, in the case of nominal model and considering different levels of model uncertainty, are compared. Significant quality indicator degradations for setpoint step responses leads to reconsider the control structure using two degree of freedom (2DoF) PID controllers. Four 2DoF PI/PID tuning technique are compared at nominal condition and under parameter variations showing good performance.
温室环境的数学模型是多输入多输出(MIMO)系统,具有高耦合、非线性、参数变化和受扰动影响大的特点。本文采用了一个著名的温室气候模型,该模型具有可测量的外部干扰,并采用了前馈-前馈线性化、解耦和干扰补偿技术。确定了温室气候模式参数/干扰,即传热系数(UA)、遮阳和叶面积指数系数(α)和拦截太阳辐射能(Si)。比较了在名义模型情况下和考虑不同模型不确定性水平下的系统响应。设定值阶跃响应的显著质量指标退化导致重新考虑使用二自由度PID控制器的控制结构。对四种2DoF PI/PID整定技术在标称条件和参数变化下的性能进行了比较。
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引用次数: 4
Leader-following formation control of multi-robot systems with adaptive fuzzy terminal sliding-mode controller 基于自适应模糊终端滑模控制器的多机器人系统leader -follow队列控制
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614631
Yeong-Hwa Chang, Cheng-Yuan Yang, W. Chan, Chia-Wen Chang, C. Tao
This paper focuses on the design of a formation controller for multi-robot dynamic systems using adaptive fuzzy terminal sliding-mode techniques. The dynamic model of differential wheeled robots is considered. To achieve finite time leader-follower formation control, a fuzzy terminal sliding-mode controller is derived based on graph theory and consensus algorithm. Moreover, an adaptive law is provided to estimate the bounds of unknown uncertainties. Both simulation and experimental results are applied to validate the formation performance. It is indicated that the proposed adaptive control scheme can provide better leader-following formation responses of networked multiple robots.
本文研究了一种基于自适应模糊终端滑模技术的多机器人动态系统编队控制器的设计。研究差动轮式机器人的动力学模型。为了实现有限时间的leader-follower群体控制,基于图论和一致性算法推导了模糊终端滑模控制器。此外,给出了一种估计未知不确定性边界的自适应律。利用模拟和实验结果验证了储层的性能。结果表明,所提出的自适应控制方案能够提供网络化多机器人较好的leader-follow队列响应。
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引用次数: 11
Control theoretic properties of physiological controller motifs 生理控制基元的控制理论性质
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614653
K. Thorsen, P. Ruoff, T. Drengstig
Identifying biophysical mechanisms that provide regulation and control is essential for our understanding of living systems. However, the distance between life sciences and control theory can be a challenge. Here, we describe, and show the control theoretic properties of a set of biochemical reaction schemes, so-called controller motifs. These controller motifs have similarities with industrial control systems, and have properties such as setpoints, integral gain, and setpoint weight. Once identified, a system understanding of such mechanisms can help synthetic biologists in selecting suitable targets to alter in construction of new biological systems. From a control theoretic viewpoint we identify which biochemical rate constant or property affect the setpoint and the dynamic response of a biophysical controller motif. We also show how a biological system consisting of two antagonistic regulatory mechanisms can be compared to a control engineering problem of controlling the water level in a tank. The similarity between biological systems and control engineering provides theoretical insight, and clears the way to an engineer's approach to synthetic biology.
识别提供调节和控制的生物物理机制对于我们理解生命系统至关重要。然而,生命科学和控制理论之间的距离可能是一个挑战。在这里,我们描述并展示了一组生化反应方案的控制理论性质,即所谓的控制器基序。这些控制器图案与工业控制系统有相似之处,并具有设定值,积分增益和设定值权重等属性。一旦确定,对这种机制的系统理解可以帮助合成生物学家选择合适的靶点来改变新的生物系统的构建。从控制理论的观点,我们确定哪些生化速率常数或性质影响设定值和动态响应的生物物理控制器motif。我们还展示了如何将一个由两种拮抗调节机制组成的生物系统与控制水箱水位的控制工程问题进行比较。生物系统和控制工程之间的相似性提供了理论洞察力,并为工程师的合成生物学方法扫清了道路。
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引用次数: 10
Analysis and design of a single-switch HPF AC/DC converter for driving power LEDs 驱动大功率led的单开关HPF AC/DC变换器的分析与设计
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614709
Hung-Liang Cheng, Yong-Nong Chang, Chun‐An Cheng, Chao Chen
This paper proposes a novel single-switch high-power-factor LED driver that is obtained by integrating a buck-boost converter and a flyback converter. Both converters share the same active switch. It results in reduction of power-conversion processes, leading to improving the circuit efficiency. The buck-boost converter performs the function of power-factor correction (PFC). The buck-boost converter can wave shape the waveform of the line current to be as the same as that of the input-line voltage when it operates at discontinuous-conduction mode. A nearly unity power factor and low total current harmonic distortion can be achieved. The flyback converter plays the role of the dc/dc converter that provides an isolated output voltage with very low voltage ripple to drive high-brightness light-emitting diodes. Since only one active switch is required, the proposed circuit is with simple control. Besides, it can meet the design goals of high power factor and low product cost.
本文提出了一种新型的单开关高功率因数LED驱动器,该驱动器由降压升压转换器和反激转换器集成而成。两个转换器共用同一个活动开关。它减少了功率转换过程,从而提高了电路效率。buck-boost变换器具有功率因数校正(PFC)的功能。当buck-boost变换器工作在断续导通模式时,它可以将线路电流的波形与输入线路电压的波形相一致。可以实现几乎一致的功率因数和较低的总电流谐波畸变。反激变换器起到dc/dc变换器的作用,提供具有极低电压纹波的隔离输出电压来驱动高亮度发光二极管。由于该电路只需要一个有源开关,因此控制简单。同时可以满足高功率因数、低产品成本的设计目标。
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引用次数: 0
The implementation of ASG and SG Random Number Generators ASG和SG随机数发生器的实现
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614692
E. Erkek, T. Tuncer
Linear Feedback Shift Register (LFSR) is mostly used in the implementation of Pseudo Random Number Generator (PRNG). LFSR based on PRNG techniques are used for many applications such as generating data, encryption keys and generating padding bits. Although a majority of random number generators have been implemented in software level, hardware implementation is becoming more and more popular due to the advent of faster and high density Field Programmable Gate Arrays (FPGA). In this paper, we propose implementations of FPGA Shrinking Generator (SG) and Alternating Step Generator (ASG) using LFSR based random number generation. Both systems have been implemented on Altera Cyclone IV board, and random number has been generated in the real time. Generated numbers have been tested according to National Institute of Standards and Technology (NIST) statistical test. According to the results, both SG and ASG have been shown to able to use in the cryptographic systems.
线性反馈移位寄存器(LFSR)在伪随机数发生器(PRNG)的实现中应用最为广泛。基于PRNG技术的LFSR被用于生成数据、加密密钥和生成填充位等许多应用。虽然大多数随机数生成器都是在软件层面实现的,但由于更快、高密度的现场可编程门阵列(FPGA)的出现,硬件实现越来越受欢迎。在本文中,我们提出了使用基于LFSR的随机数生成的FPGA收缩发生器(SG)和交替阶跃发生器(ASG)的实现。这两个系统都在Altera Cyclone IV板上实现,并实时生成随机数。生成的数字已根据美国国家标准与技术研究所(NIST)的统计测试进行测试。结果表明,SG和ASG都可以在密码系统中使用。
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引用次数: 8
Prediction and sensitivity analysis by TS fuzzy neural network for fungal growth in food products TS模糊神经网络对食品中真菌生长的预测及敏感性分析
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614711
Yu-hao Chang, Wen-Hsien Ho, Hon-Yi Shi, J. Chou
A TS fuzzy neural network (TSFNN) was compared with an artificial neural network (ANN) in terms of accuracy in predicting the combined effects of temperature, pH level, sodium chloride level and sodium nitrite level on the growth rate of Leuconostoc mesenteroides. The TSFNN and ANN models were compared in terms of six statistical indices calculated by comparing their prediction results with actual data. The learning-based systems obtained encouraging prediction results. Sensitivity analyses of the four environmental factors showed that temperature and, to a lesser extent, NaCl had the most influence on accuracy in predicting the growth rate of Leuconostoc mesenteroides. The observed effectiveness of TSFNN for modeling microbial kinetic parameters confirms its potential use as a supplemental tool in predictive mycology. Comparisons of the six statistical indices showed that the TSFNN model was better than ANN model in predicting the four kinetic parameters.
比较了TS模糊神经网络(TSFNN)与人工神经网络(ANN)预测温度、pH、氯化钠和亚硝酸钠水平对肠系膜白菌生长速率的综合影响的准确性。通过将TSFNN和ANN模型的预测结果与实际数据进行比较,计算出6个统计指标。基于学习的系统获得了令人鼓舞的预测结果。对4种环境因子的敏感性分析表明,温度和NaCl对预测肠系膜Leuconostoc生长速度的准确性影响最大。观察到TSFNN在模拟微生物动力学参数方面的有效性证实了它作为预测真菌学补充工具的潜在用途。6个统计指标的比较表明,TSFNN模型在预测4个动力学参数方面优于ANN模型。
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引用次数: 0
Autonomous stair detection and climbing systems for a tracked robot 履带式机器人自主楼梯探测与攀爬系统
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614659
Chien-Kai Tseng, I. Li, Yi-Hsing Chien, Ming-Chang Chen, Wei-Yen Wang
Currently autonomous mobile robots offer a diversity of types and functions. This paper mainly emphasizes on a functionality and practicality of self-made tracked robot, which can move autonomously on a bumpy road, such as stairs and slopes. With information on distance obtained by Kinect sensor, the tracked robot is able to identify different types of roads. In addition, we design four modes, including exploration mode, alignment mode, calculating tilt angle mode and climbing mode, to achieve the tasks of identifying and climbing stairs and slopes.
目前自主移动机器人提供了多种类型和功能。本文重点研究了自制履带式机器人的功能性和实用性,该机器人能够在楼梯、斜坡等凹凸不平的路面上自主移动。利用Kinect传感器获得的距离信息,履带式机器人能够识别不同类型的道路。此外,我们设计了探索模式、对准模式、计算倾斜角模式和攀爬模式四种模式,实现了楼梯和斜坡的识别和攀爬任务。
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引用次数: 16
Fuzzy regulation of DC-bus voltage for solar energy system 太阳能系统直流母线电压的模糊调节
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614637
Gwo-Ruey Yu, Jian-Fu Chen
A novel design of dc-bus voltage regulation using fuzzy logic is presented in this paper. The dc-bus voltage is regulated for a solar energy system which includes a bi-directional inverter, photovoltaic panels, a maximum power point tracker, and dc loads. In grid-connected mode, the bi-directional inverter can track the reference ac current signal. In rectification mode, the bi-directional inverter can control the power flow. A maximum power point tracker is designed by the perturbation and observation method. Furthermore, the fuzzy logic system is developed to control the dc-bus voltage for load variation. Simulation results have validated the effectiveness of this design by MATLAB/Simulink.
本文提出了一种利用模糊逻辑实现直流母线电压调节的新方法。直流母线电压用于太阳能系统,该系统包括双向逆变器、光伏板、最大功率点跟踪器和直流负载。在并网模式下,双向逆变器可以跟踪参考交流电流信号。在整流模式下,双向逆变器可以控制潮流。采用摄动观察法设计了最大功率点跟踪器。在此基础上,提出了模糊控制直流母线电压的方法。通过MATLAB/Simulink仿真验证了该设计的有效性。
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引用次数: 1
Adaptive robust motion control using fuzzy wavelet neural networks for uncertain electric two-wheeled robotic vehicles 基于模糊小波神经网络的不确定电动两轮机器人自适应鲁棒运动控制
Pub Date : 2013-07-04 DOI: 10.1109/ICSSE.2013.6614665
Ching-Chih Tsai, Ching-Hang Tsai
This paper presents an adaptive robust motion control using fuzzy wavelet neural networks (FWNN) for a electric two-wheeled robotic vehicles (ETWRV). A mechatronic system structure driven by two DC motors is briefly described, and its nonlinear mathematical modeling incorporating the friction between the wheels and the motion surface is derived. With the decomposition of the overall system into two subsystems: yaw control and inverted pendulum, two intelligent adaptive FWNN controllers are proposed to achieve self-balancing, speed tracking and yaw motion control. Simulation results indicate that the proposed controllers are capable of providing appropriate control actions to steer the vehicle in desired manners.
提出了一种基于模糊小波神经网络(FWNN)的电动两轮机器人自适应鲁棒运动控制方法。简要介绍了由两台直流电机驱动的机电一体化系统结构,建立了考虑车轮与运动面摩擦的非线性数学模型。在将整个系统分解为偏航控制和倒立摆两个子系统的基础上,提出了两个智能自适应FWNN控制器来实现自平衡、速度跟踪和偏航运动控制。仿真结果表明,所提出的控制器能够提供适当的控制动作,使车辆以期望的方式转向。
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引用次数: 3
期刊
2013 International Conference on System Science and Engineering (ICSSE)
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