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2016 22nd International Conference on Automation and Computing (ICAC)最新文献

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A new strategy for improving vision based tracking accuracy based on utilization of camera calibration information 一种利用摄像机标定信息提高视觉跟踪精度的新策略
Pub Date : 2016-09-08 DOI: 10.1109/IConAC.2016.7604932
Hamza Alzarok, S. Fletcher, A. Longstaff
Camera calibration is one of the essential components of a vision based tracking system where the objective is to extract three dimensional information from a set of two dimensional frames. The information extracted from the calibration process is significant for examining the accuracy of the vision sensor, and thus further for estimating its effectiveness as a tracking system in real applications. This paper introduces another use for this information in which the proper location of the camera can be predicted. Anew mathematical formula based on utilizing the extracted calibration information was used for finding the optimum location for the camera, which provides the best detection accuracy. Moreover, the calibration information was also used for selecting the proper image Denoising filter. The results obtained proved the validity of the proposed formula in finding the desired camera location where the smallest detection errors can be produced. Also, results showed that the proper selection of the filter parameters led to a considerable enhancement in the overall accuracy of the camera, reducing the overall detection error by 0.2 mm.
摄像机标定是基于视觉的跟踪系统的重要组成部分之一,其目标是从一组二维帧中提取三维信息。从校准过程中提取的信息对于检查视觉传感器的精度,从而进一步评估其作为跟踪系统在实际应用中的有效性具有重要意义。本文介绍了该信息的另一种用途,即可以预测相机的正确位置。利用所提取的标定信息,利用新的数学公式求出相机的最佳位置,从而提供最佳的检测精度。此外,还利用标定信息选择合适的图像去噪滤波器。计算结果证明了所提公式在寻找能产生最小检测误差的理想摄像机位置时的有效性。结果表明,滤波器参数的合理选择使相机的整体精度得到了显著提高,整体检测误差降低了0.2 mm。
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引用次数: 3
LIDAR-assisted wind turbine gain scheduling control for load reduction 激光雷达辅助风力涡轮机增益调度控制的减载
Pub Date : 2016-09-07 DOI: 10.1109/IConAC.2016.7604887
J.Ch. Bao, H. Yue, W. Leithead, Jiqiang Wang
A gain-scheduled feedforward controller employing pseudo-LIDAR wind measurement is designed to augment the baseline feedback controller for wind turbine load reduction during above rated operation. The feedforward controller is firstly designed based on a linearised wind turbine model at one specific wind speed, then expanded for full above rated operational envelope with gain scheduling. The wind evolution model is established using the pseudo-LIDAR measurement data which is generated from Bladed using a designed sampling strategy. The combined feedforward and baseline control system is simulated on a 5MW industrial wind turbine model developed at Strathclyde University. Simulation results demonstrate that the gain scheduling feedforward control strategy can improve the rotor and tower load reduction performance for large wind turbines.
设计了一种基于伪激光雷达测风的增益调度前馈控制器,以增强基线反馈控制器,实现风电机组在额定运行状态下的减负荷。该前馈控制器首先基于特定风速下的线性化风力机模型进行设计,然后通过增益调度将其扩展到额定运行包络。利用叶片产生的伪激光雷达测量数据,采用设计的采样策略,建立了风场演化模型。前馈和基线联合控制系统在斯特拉斯克莱德大学开发的5MW工业风力涡轮机模型上进行了仿真。仿真结果表明,增益调度前馈控制策略可以提高大型风力发电机组的转子和塔架减载性能。
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引用次数: 5
Robot-assisted smart firefighting and interdisciplinary perspectives 机器人辅助智能消防和跨学科视角
Pub Date : 2016-09-07 DOI: 10.1109/IConAC.2016.7604952
Pengcheng Liu, Hongnian Yu, S. Cang, L. Vlădăreanu
Urbanization and changes in modern infrastructure have introduced new challenges to current firefighting practices. The current manual operations and training including fire investigation, hazardous chemicals detection, fire and rescue are insufficient to protect the firefighter's safety and life. The firefighting and rescue functions of the existing equipment and apparatus and their dexterity are limited, particularly in the harsh firefighting environments. It is well-established that data and informatics are key factors for efficient and smart firefighting operation. This paper provides a review on the robot-assisted firefighting systems with interdisciplinary perspectives to identify the needs, requirements, challenges as well as future trends to facilitate smart and efficient operations. The needs and challenges of robot-assisted firefighting systems are firstly investigated and identified. Subsequently, prevailing firefighting robotic platforms in literature as well as in practices are elaborately scrutinized and discussed, followed by investigation of localization and navigation support methods. Finally, conclusions and future trends outlook are provided.
城市化和现代基础设施的变化给当前的消防实践带来了新的挑战。目前的火灾调查、危险化学品检测、消防和救援等人工操作和培训不足以保障消防员的生命安全。现有设备和器材的灭火和救援功能及其灵活性有限,特别是在恶劣的消防环境中。众所周知,数据和信息学是高效、智能消防操作的关键因素。本文从跨学科的角度对机器人辅助消防系统进行了综述,以确定需求、要求、挑战以及未来的发展趋势,以促进智能和高效的操作。首先对机器人辅助消防系统的需求和挑战进行了研究和确定。随后,对文献和实践中流行的消防机器人平台进行了详细的审查和讨论,然后对定位和导航支持方法进行了调查。最后,对本文的研究结论和未来发展趋势进行了展望。
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引用次数: 30
Development of a self-propelled capsule robot for pipeline inspection 自走式管道检测胶囊机器人的研制
Pub Date : 2016-09-07 DOI: 10.1109/IConAC.2016.7604899
A. Yusupov, Yang Liu
This paper introduces a current research project carried out in the Robert Gordon University for developing the prototype of the vibro-impact capsule robot for pipeline inspection. The project aims to address the technical bottlenecks which have been encountered by current pipeline technologies with a particular focus on oil industry. In order to verify the concept, a dummy capsule prototype with a diameter of 80 mm is designed and manufactured for testing in a 2.5 meter long section of 140 mm nominal diameter clear PVCu pipe with a flow velocity up to 0.3 m/s. By using the experimental test bed, the prototype of the capsule system can be tested at various flow rates, and the experimental results could be used for comparing with CFD simulation results for optimization.
本文介绍了目前在罗伯特戈登大学进行的一项研究项目,即开发用于管道检测的振动冲击胶囊机器人原型。该项目旨在解决当前管道技术遇到的技术瓶颈,特别是石油工业。为了验证这一概念,设计并制造了一个直径为80毫米的虚拟胶囊原型,用于在标称直径为140毫米的透明PVCu管的2.5米长截面中进行测试,流速高达0.3米/秒。利用实验试验台,可以对胶囊系统原型进行不同流量下的测试,并将实验结果与CFD模拟结果进行对比,进行优化。
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引用次数: 11
Integrated time sampling design and measurement set selection for biochemical systems 生化系统集成时间采样设计与测量装置选择
Pub Date : 2016-09-07 DOI: 10.1109/IConAC.2016.7604939
Hui Yu, Hening Yu, H. Yue, Jinglin Zhou
The optimal experimental design (OED) for observation strategy is investigated in this paper to collect the most informative experimental data for parameter estimation. The aim is to determine the best sampling time points and also select the most valuable measurement state variables through OED. The two design objectives are integrated together as a single-objective optimisation problem in which the variables and their sampling times are weighted in an expanded time sampling framework. Three optimisation methods, i.e., the Powell's method, the sequential selection method, and the sequential quadratic programming method, are employed to solve the optimisation problem. Their computation efficiencies are compared using a biodiesel case study system simulation. Simulation results demonstrate the effectiveness of the proposed method in reducing parameter estimation uncertainties as well as reducing parameter correlations. It can also be observed that the integrated OED doesn't cost extra computation efforts when variable selection is considered together with the time sampling task.
为了收集最具信息量的实验数据进行参数估计,本文研究了观测策略的最优实验设计。目的是通过OED确定最佳采样时间点,并选择最有价值的测量状态变量。这两个设计目标作为一个单目标优化问题集成在一起,其中变量及其采样时间在扩展时间采样框架中加权。采用Powell法、顺序选择法和顺序二次规划法三种优化方法求解优化问题。使用生物柴油案例研究系统模拟比较了它们的计算效率。仿真结果证明了该方法在降低参数估计不确定性和降低参数相关性方面的有效性。还可以观察到,当将变量选择与时间采样任务一起考虑时,集成的OED不需要额外的计算工作。
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引用次数: 0
Wood defects classification using GLCM based features and PSO trained neural network 基于GLCM特征和粒子群训练神经网络的木材缺陷分类
Pub Date : 2016-09-01 DOI: 10.1109/IConAC.2016.7604931
Rehan Qayyum, K. Kamal, T. Zafar, S. Mathavan
Machine vision based inspection system are in great focus nowadays for quality control applications. The paper presents a novel approach for classification of wood knot defects for an automated inspection. The proposed technique utilizes gray level co-occurrence matrix based features and a particle swarm optimization trained feedforward neural network. It takes contrast, correlation, energy, homogeneity as input parameters to a feedforward neural network to predict wood defects. PSO is used as a learning algorithm. The MSE for training data is found to be 0.3483 and 78.26% accuracy is achieved for testing data. The proposed technique shows promising results to classify wood defects using a PSO trained neural network.
基于机器视觉的检测系统是当今质量控制应用的热点。提出了一种用于自动检测的木结缺陷分类的新方法。该技术利用基于灰度共生矩阵的特征和粒子群优化训练的前馈神经网络。该方法以对比度、相关性、能量、均匀性等参数作为前馈神经网络的输入参数,对木材缺陷进行预测。粒子群算法是一种学习算法。训练数据的MSE为0.3483,测试数据的准确率为78.26%。利用粒子群训练的神经网络对木材缺陷进行分类,显示出良好的效果。
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引用次数: 26
RECMAC: Reliable and efficient cooperative cross-layer MAC scheme for vehicular communication based on random network coding technique RECMAC:基于随机网络编码技术的可靠高效的车辆通信跨层协作MAC方案
Pub Date : 2016-09-01 DOI: 10.1109/IConAC.2016.7604943
E. Eze, Sijing Zhang, E. Liu, Emmanuel N. Nweso, E. C. Joy
In an unreliable cluster-based, broadcast-oriented vehicular network setting, we investigate the transmission reliability and throughput performance of random network coding (RNC) as a function of the packet generate rate. Our proposed model consists of a source vehicle broadcasting packets to a set of receivers (i.e. one-to-many) over independent broadcast erasure channels. The source vehicle performs RNC on N packets and broadcasts the encoded message to a set of receivers. In each hop, several vehicles form a cluster and cooperatively transmit the encoded or re-encoded packet. The combination of RNC, cluster based, and cooperative communications enables RECMAC to optimally minimize data redundancy, which means less overhead, and improve reliability as opposed to existing coding-based solutions. Theoretic analyses and simulation results show that RECMAC scheme can achieve optimal performance in terms of transmission reliability and throughput.
在一个不可靠的基于集群的面向广播的车载网络设置中,我们研究了随机网络编码(RNC)的传输可靠性和吞吐量性能作为数据包生成速率的函数。我们提出的模型由一个源车辆通过独立的广播擦除通道向一组接收器广播数据包(即一对多)组成。源车辆对N个数据包执行RNC,并将编码的消息广播给一组接收器。在每一跳中,几辆车组成一个集群,共同传输编码或重新编码的数据包。RNC、基于集群和协作通信的组合使RECMAC能够最大限度地减少数据冗余,这意味着更少的开销,并提高可靠性,而不是现有的基于编码的解决方案。理论分析和仿真结果表明,RECMAC方案在传输可靠性和吞吐量方面都能达到最优的性能。
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引用次数: 5
Use of Symmetric Multiprocessor Architecture to achieve high performance computing 采用对称多处理器架构实现高性能计算
Pub Date : 2016-09-01 DOI: 10.1109/IConAC.2016.7604892
M. Ilyas, Qaisar Javaid, M. A. Shah
In this paper, the objective is to investigate different performance enhancement attributes in multiprocessors architectures. We investigate the problem of cache hit and cache miss by efficient cache partitioning technique. We improved power efficiency by handling cache misses during data transfer from main memory to cache. The focus is on cache utilization techniques, cache partitioning techniques, power utilization by different components, parallel processing issues and limitation in multiple processors. We evaluate the parameters which use the cache and processors to achieve highest level performance. In this way the workload between different processes can be handled easily.
本文的目标是研究多处理器体系结构中不同的性能增强属性。利用高效缓存分区技术研究了缓存命中和缓存丢失问题。我们通过处理从主存到缓存的数据传输过程中的缓存丢失,提高了电源效率。重点是缓存利用技术、缓存分区技术、不同组件的功耗、并行处理问题和多处理器的限制。我们评估使用缓存和处理器的参数,以达到最高水平的性能。通过这种方式,可以轻松处理不同进程之间的工作负载。
{"title":"Use of Symmetric Multiprocessor Architecture to achieve high performance computing","authors":"M. Ilyas, Qaisar Javaid, M. A. Shah","doi":"10.1109/IConAC.2016.7604892","DOIUrl":"https://doi.org/10.1109/IConAC.2016.7604892","url":null,"abstract":"In this paper, the objective is to investigate different performance enhancement attributes in multiprocessors architectures. We investigate the problem of cache hit and cache miss by efficient cache partitioning technique. We improved power efficiency by handling cache misses during data transfer from main memory to cache. The focus is on cache utilization techniques, cache partitioning techniques, power utilization by different components, parallel processing issues and limitation in multiple processors. We evaluate the parameters which use the cache and processors to achieve highest level performance. In this way the workload between different processes can be handled easily.","PeriodicalId":375052,"journal":{"name":"2016 22nd International Conference on Automation and Computing (ICAC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126022294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Modelling of one-dimensional noisy dynamical systems with a Frobenius-Perron solution 一维噪声动力系统的Frobenius-Perron解建模
Pub Date : 2016-09-01 DOI: 10.1109/IConAC.2016.7604922
Xiaokai Nie, Jihong Wang, O. Kiselychnyk, Jing Chen
Energy storage plays an important role in maintaining energy balance for the future power network. A novel solution by learning human body energy system is explored aiming to determine the best ratio between the energy storage and generation capacity with variations of mixed energy sources. The fluctuation process of energy storage in human body and power network can be approximately represented by a one-dimensional noisy dynamical system. This paper develops a new approach to inferring a piecewise linear semi-Markov transformation of a one-dimensional discrete time dynamical system that is subjected to additive stochastic noise, based on sequences of probability density functions observed from the noisy dynamical system. The reconstructed map that approximates the underlying transformation can be used to predict the amount of stable fat/energy storage, and to achieve the bio-inspired three-point (generation, load and storage) balance structure. A numerical example is used to demonstrate the applicability of the derived algorithm and robustness with respect to additive stochastic noise.
储能对于维持未来电网的能量平衡具有重要作用。通过学习人体能量系统,探索了一种新的解决方案,旨在确定混合能源变化时储能与发电量的最佳比例。人体蓄能和电网蓄能的波动过程可以近似地表示为一维噪声动力系统。本文提出了一种新的方法来推断受加性随机噪声影响的一维离散时间动力系统的分段线性半马尔可夫变换,该方法基于从有噪声动力系统中观测到的概率密度函数序列。重建的图近似于潜在的转化,可以用来预测稳定的脂肪/能量储存的数量,并实现仿生三点(发电、负荷和储存)平衡结构。通过数值算例验证了该算法的适用性和对加性随机噪声的鲁棒性。
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引用次数: 1
H∞ state estimation for time-varying networks with probabilistic delay in measurements 测量中有概率延迟时变网络的H∞状态估计
Pub Date : 2016-09-01 DOI: 10.1109/IConAC.2016.7604885
Fan Wang, Jinling Liang, Xiaohui Liu
This paper is concerned with the H∞ state estimation problem for the time-varying networks with probabilistic delay over a finite horizon. The measurements for the proposed network experience randomly occurring delays (RODs) with changeable probabilities, which could be described by a time-varying Bernoulli distribution stochastic sequence. Stochastic analysis and probability-dependent method are utilized to develop sufficient criteria under which the prescribed H∞ performance can be achieved. It is worth mentioning that, based on the available lower and upper bounds of the varying probabilities, the target estimator gains are transformed into a convex optimization problem subjecting to a set of recursive matrix inequalities which can be applied in a more robust situation. Finally, a simulation example is provided to show the effectiveness of the obtained results.
研究有限视界上具有概率延迟的时变网络的H∞状态估计问题。该网络的测量经历了可变概率的随机延迟(RODs),该延迟可以用时变伯努利分布随机序列来描述。利用随机分析和概率相关方法制定了充分的准则,在这些准则下可以达到规定的H∞性能。值得一提的是,基于可用的变概率下界和上界,将目标估计器增益转化为一个包含一组递归矩阵不等式的凸优化问题,该问题可以应用于更鲁棒的情况。最后,通过仿真算例验证了所得结果的有效性。
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引用次数: 3
期刊
2016 22nd International Conference on Automation and Computing (ICAC)
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