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2011 Fourth International Conference on Modeling, Simulation and Applied Optimization最新文献

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Modeling and control of magnetic levitation system via fuzzy logic controller 磁悬浮系统的模糊控制器建模与控制
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775532
K. Ishaque, Y. Saleem, S. Abdullah, M. Amjad, Munaf Rashid, S. Kazi
Fuzzy logic controller (FLC) is an attractive alternative to existing classical or modern controllers for designing the challenging Non-linear control systems. It does not require any system modeling or complex mathematical equations governing the relationship between inputs and outputs. Fuzzy rules are very easy to learn and use, even by non-experts. It typically takes only a few rules to describe systems that may require several lines of conventional software code, which reduces the design complexity. By considering these advantages, this paper presents the design and analysis of a FLC controller for the magnetic levitation system. Additionally, a classical PID controller is also designed to compare the performance of both types of controllers. Results reveal that FLC found to give better transient and steady state results compare to the classical PID.
模糊逻辑控制器(FLC)是一个有吸引力的替代现有的经典或现代控制器设计具有挑战性的非线性控制系统。它不需要任何系统建模或复杂的数学方程来控制输入和输出之间的关系。模糊规则非常容易学习和使用,即使是非专家也是如此。通常只需要几条规则来描述可能需要几行传统软件代码的系统,这降低了设计的复杂性。考虑到这些优点,本文设计并分析了一种用于磁悬浮系统的FLC控制器。此外,还设计了一个经典PID控制器来比较两种类型控制器的性能。结果表明,与传统PID相比,FLC能给出更好的瞬态和稳态结果。
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引用次数: 11
Simulation of single stage cascode low noise amplifier at 5.8GHz using t-matching network 基于t匹配网络的5.8GHz单级级联低噪声放大器仿真
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775557
A. Ibrahim, M. N. Husain, A. R. Othman, M. Johal
This paper presents a 5.8 GHz single stage cascode low noise amplifier using T-matching techniques for IEEE 802.16 standard. The amplifier use FHX76LP Low Noise SuperHEMT FET. The design simulation process is using Advance Design System (ADS) software. The cascode low noise amplifier (LNA) produced gain of 17.21dB and noise figure (NF) at 0.845dB. The input reflection (S11) and output return loss (S22) are −12.71dB and −15.52dB respectively. The bandwidth of the amplifier is 1GHz. The input sensitivity is complying with the IEEE 802.16 standards.
本文提出了一种基于IEEE 802.16标准的t匹配技术的5.8 GHz单级级联码低噪声放大器。放大器采用FHX76LP低噪声SuperHEMT场效应管。设计仿真过程采用超前设计系统(advanced design System, ADS)软件。级联低噪声放大器(LNA)的增益为17.21dB,噪声系数为0.845dB。输入反射(S11)和输出回波损耗(S22)分别为- 12.71dB和- 15.52dB。放大器的带宽为1GHz。输入灵敏度符合IEEE 802.16标准。
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引用次数: 2
Optimization of depth control for Unmanned Underwater Vehicle using surrogate modeling technique 基于代理建模技术的无人潜航器深度控制优化
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775543
A. Faruq, S. Abdullah, M. Fauzi, S. Nor
The underwater environment poses a difficult challenge for autonomous underwater navigation. A standard problem of underwater vehicles is to maintain its position at a certain depth in order for it to perform desired operations. An effective controller is required for this purpose and hence the design of a depth controller for an Unmanned Underwater Vehicle is described in this paper. The control algorithm is simulated by using the Marine Guidance Navigation and Control Simulator. The project is to show how a Radial Basis Function Surrogate Model can be used to tune the scaling factors of fuzzy logic controller quickly. By using offline optimization approach, Surrogate Modeling or sometimes called Metamodeling has been done to minimize the Integral Square Error between the set point and the measured depth of the Unmanned Underwater Vehicle.
水下环境对自主水下导航提出了严峻的挑战。水下航行器的一个标准问题是保持它在一定深度的位置,以便它执行预期的操作。为此需要一种有效的控制器,因此本文描述了无人潜航器深度控制器的设计。利用船舶制导导航控制模拟器对控制算法进行了仿真。该项目是展示如何径向基函数代理模型可以用来快速调整模糊逻辑控制器的比例因子。通过离线优化方法,对无人潜航器进行代理建模,有时也称为元建模,以最小化设定值与测量深度之间的积分平方误差。
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引用次数: 11
A 0.8 V class-AB linear OTA using DTMOS for high-frequency applications 一个0.8 V ab类线性OTA使用DTMOS高频应用
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775478
A. Suadet, Thawatchai Thongleam, Arnon Kanjanop, Pratchayaporn Singhanath, Buncha Hirunsing, Weerasak Chuenta, V. Kasemsuwan
This paper presents a 0.8 V class-AB linear operational transconductance amplifier (OTA) using DTMOS for high-frequency applications. The circuit employs positive feedback to enhance the input impedance, and feed-forward technique to suppress the common-mode gain. The circuit is designed using 0.18 μm CMOS technology under 0.8 V supply. The simulation results show rail-to-rail input/output swing, suppressed common-mode response, and good linearity (less than −48 dB with input 0.6 Vpp, 5 MHz). The power dissipation is 155 μW.
本文提出了一种用于高频应用的0.8 V ab类线性运算跨导放大器(OTA)。该电路采用正反馈增强输入阻抗,前馈技术抑制共模增益。电路采用0.18 μm CMOS工艺设计,电源电压为0.8 V。仿真结果表明,该系统轨对轨输入/输出摆幅、共模响应抑制、线性度好(输入0.6 Vpp、5 MHz时小于- 48 dB)。功耗为155 μW。
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引用次数: 5
A mixed integer linear programming (MILP) model for optimal design of water network 用水管网优化设计的混合整数线性规划(MILP)模型
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775558
Z. B. Handani, H. Hashim, S. R. Alwi, Z. Manan
This work presents the development of a new systematic technique to target fresh water consumption and wastewater generation for systems involving multiple contaminants when all options of water minimization including source elimination, reduction, reuse/recycle, outsourcing and regeneration are considered simultaneously. This problem is formulated as mixed integer linear programming (MILP) and implemented in Generalized Algebraic Modeling System (GAMS). The consideration of process changes will lead to optimal design of minimum water utilization network. The MILP model proposed in this work can be used to simultaneously generate the minimum water targets and design the minimum water network for global water-using operations for buildings and industry. The approach is illustrated by using an industrial involving a chlor-alkali plant. Significant water savings for the industrial case study is achieved, illustrating the effectiveness of the proposed approach.
这项工作提出了一种新的系统技术的发展,针对涉及多种污染物的系统的淡水消耗和废水产生,同时考虑所有最小化水的选择,包括源头消除,减少,再利用/再循环,外包和再生。该问题被表述为混合整数线性规划(MILP),并在广义代数建模系统(GAMS)中实现。考虑工艺变化,对最小用水网络进行优化设计。本研究提出的MILP模型可用于同时生成最小用水目标和设计全球建筑和工业用水操作的最小用水网络。以涉及氯碱厂的工业为例说明了这种方法。在工业案例研究中取得了显著的节水效果,说明了所提出方法的有效性。
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引用次数: 3
Groundwater modeling to simulate groundwater levels due to interlinking of rivers in Varada river basin, India 在印度瓦拉达河流域,地下水模型模拟由于河流相互连接的地下水位
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775585
H. Ramesh, A. Mahesha
Using a two-dimensional Gelarkin finite element model, the present study characterizes groundwater flow in a Varada basin, a semi humid area of Karnataka, India. The model characterization involved taking field data by conducting pump tests describing an aquifer system. Geological geometry and the number of aquifers have been analyzed based on a large amount of geological, hydrogeological and topographical data. The aquifer properties are then transformed into input variables that the model code uses to solve governing equations of flow. The results of the field experiments showed that Varada basin is predominantly confined aquifer. For calibrating the numerical groundwater model, the groundwater flow was simulated in steady state. Results of study demonstrate a moderately high correlation between the observed and simulated groundwater level. In addition, the groundwater level and trend in the transient state has also been elucidated. The validated numerical groundwater model was used to predict the groundwater levels due to impact of recharge from the interlinking of rivers in the basin. The model result provides an excellent visual representation of groundwater levels, presenting resource managers and decision makers with a clear understanding of the nature of the interaction of groundwater levels with the proposed interlinking project. Results build a base for further analysis under different future scenarios for implementation.
使用二维Gelarkin有限元模型,本研究表征了印度卡纳塔克邦半湿润地区Varada盆地的地下水流动。该模型的特征包括通过进行描述含水层系统的泵试验来获取现场数据。在大量地质、水文和地形资料的基础上,对地质几何和含水层数量进行了分析。然后将含水层属性转换为模型代码用来求解流量控制方程的输入变量。现场试验结果表明,Varada盆地以承压含水层为主。为了标定地下水数值模型,模拟了稳态下的地下水流动。研究结果表明,观测到的地下水位与模拟的地下水位有较高的相关性。此外,还对地下水位及其暂态变化趋势进行了分析。利用验证后的地下水数值模型对流域内河流连通补给影响下的地下水位进行了预测。模型结果提供了一个很好的地下水水位的可视化表示,使资源管理者和决策者清楚地了解地下水水位与拟议的互联项目相互作用的本质。结果为进一步分析未来不同情景下的实施奠定了基础。
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引用次数: 0
Low power BPSK modulator for the application of capsule endoscope 低功率BPSK调制器在胶囊内窥镜中的应用
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775626
Lioe De Xing, S. Shafie, H. Ramiah
This paper presents the Binary Phase Shift Keying (BPSK) modulator for high data rate medical imaging for capsule endoscope. The BPSK modulator consists of a mixer and a ring oscillator. The ring oscillator provides carrier frequency of 433MHz and mix with the mixer to produce BPSK modulated signal. The modulator is designed using Silterra 0.13μm CMOS process. For supply voltage of 1.2 V, data rate of 3.5Mbps the mixer has power consumption of 1.2mW and at output power of −10.7 dBm.
提出了用于胶囊内窥镜高数据速率医学成像的二相移键控(BPSK)调制器。BPSK调制器由混频器和环形振荡器组成。环形振荡器提供433MHz的载波频率,与混频器混合产生BPSK调制信号。该调制器采用Silterra 0.13μm CMOS工艺设计。电源电压为1.2 V,数据速率为3.5Mbps时,混频器功耗为1.2 mw,输出功率为−10.7 dBm。
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引用次数: 2
Genetic and hybrid shuffled frog leaping algorithms for solving a 2-stage model for a hub covering location network 求解集线器覆盖位置网络两阶段模型的遗传和混合青蛙跳跃算法
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775615
M. Mohammadi, R. Tavakkoli-Moghaddam, H. Rostami
A hub location problem appears in a variety of applications, such as airline systems, cargo delivery systems and telecommunication network design. In this paper, we consider a central mine and a number of hubs (e.g., factories) connected to a number of nodes (e.g., shops or customers) in a network. First we design the hub network, and then schedule the raw materials transportation from the central mine to hubs (i.e., factories). In this case, we consider only one transportation system regarded as single machine scheduling. Furthermore, we use this hub network to solve the scheduling model. In this paper, we study the single allocation hub covering problem with capacity constraints, known as capacitated single allocation hub covering location problem (CSAHCLP), and then present a mixed-integer programming (MIP) model. In addition, we propose an efficient genetic algorithm and a hybrid shuffled frog leaping algorithm to solve the first and second stages of our presented model, respectively. A number of test problems are solved by the forgoing algorithms and the related results are compared with those results obtained by the Lingo software.
枢纽定位问题出现在各种应用中,如航空系统、货物交付系统和电信网络设计。在本文中,我们考虑一个中央矿山和一些连接到网络中许多节点(例如商店或客户)的枢纽(例如工厂)。我们首先设计枢纽网络,然后安排原材料从中心矿山到枢纽(即工厂)的运输。在这种情况下,我们只考虑一个运输系统作为单机调度。并利用该集线器网络求解调度模型。本文研究了具有容量约束的单分配枢纽覆盖问题,即有能力单分配枢纽覆盖位置问题,并给出了一个混合整数规划(MIP)模型。此外,我们还提出了一种高效的遗传算法和一种混合的青蛙跳跃算法来分别求解模型的第一阶段和第二阶段。用上述算法解决了若干测试问题,并与Lingo软件的结果进行了比较。
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引用次数: 2
Application of shuffled complex evolution global optimization technique in the design of truss structures 混沌复杂演化全局优化技术在桁架结构设计中的应用
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775590
Samer M. Barakat, H. Ibrahim
This paper presents evolutionary-based optimization procedure for designing truss structures. The Shuffled Complex Evolution optimizer (SCEO) is used for solving the nonlinear constrained optimization problems. In this optimum design formulation, the objective function is the material weight of the truss; the design variables are the cross-sections of the truss members; the constraints are the stresses in members and the displacements of the joints. The constraints were handled using non-stationary dynamically modified penalty functions. Two classical truss optimization examples are presented herein to demonstrate the efficiency of the SCE algorithm. The two test problems include a 17-bar planar truss subjected to a single load condition and a 25-bar space truss subjected to two load conditions. The result shows that the SCEO method is very efficient in finding the best discovered optimal solutions, which are better, or at the same level of the results of other structural optimization methods.
本文提出了基于演化的桁架结构优化设计方法。将混沌复杂进化优化器(SCEO)用于求解非线性约束优化问题。在此优化设计公式中,目标函数为桁架材料自重;设计变量为桁架构件的截面;约束条件是构件的应力和节点的位移。使用非平稳的动态修正惩罚函数处理约束。文中给出了两个经典桁架优化实例,验证了该算法的有效性。这两个测试问题包括一个17巴平面桁架在单一荷载条件下和一个25巴空间桁架在两个荷载条件下。结果表明,SCEO方法在寻找最优解方面是非常有效的,其结果优于或处于其他结构优化方法的同一水平。
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引用次数: 2
Robust fault detection and isolation of steer by wire system under various class of fault and system uncertainties 线控转向系统在各种故障和系统不确定性下的鲁棒故障检测与隔离
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775535
A. Kheirandish, A. R. Husain, M. S. Kazemi, E. Gatavi, M. N. Ahmad
Recent advances toward steer-by-wire technology have promised significant improvements in vehicle, safety, stability, dynamics and maneuverability. The conventional mechanical linkages between the steering wheel and the front wheel are removed in this system. While the complete separation of the steering wheel from the road wheels provides exciting opportunities for vehicle dynamics control, it also presents practical problems for steering control about fault tolerant function such as the detection of sensor fault and multiplicative fault simultaneously. So Fault detection and isolation (FDI) plays important rule in this system. In this paper, Sliding Mode Observer (SMO) is proposed to use for model-based fault detection and isolation method which include processing of multiplicative and sensor fault. At last, simulation shows the effectiveness of the proposed method.
近年来,线控转向技术的进步已经在车辆、安全性、稳定性、动力学和可操作性方面取得了重大进展。在这个系统中,方向盘和前轮之间的传统机械连接被去掉了。方向盘与道路车轮的完全分离为车辆动力学控制提供了令人兴奋的机会,同时也给转向控制带来了容错功能的实际问题,如传感器故障和乘性故障的同时检测。因此,故障检测与隔离在该系统中起着重要的作用。本文提出将滑模观测器(SMO)用于基于模型的故障检测和隔离方法,包括乘式故障和传感器故障的处理。最后通过仿真验证了该方法的有效性。
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引用次数: 2
期刊
2011 Fourth International Conference on Modeling, Simulation and Applied Optimization
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