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IEEE Global Telecommunications Conference (GLOBECOM)

作者： Li, Zhi Cheng, Xiang Han, Shuangshuang Wen, Miaowen Yang, Liu-Qing Jiao, Bingli Peking Univ Sch Elect Engn & Comp Sci Beijing Peoples R China Qingdao Acad Intelligent Ind Qingdao Shandong Peoples R China State Grid Shandong Elect Power Co Informat & Commun Co Jinan Peoples R China Chinese Acad Sci Inst Automat State Key Lab Management & Control Complex Syst Beijing Peoples R China South China Univ Technol Sch Elect & Informat Engn Guangzhou Guangdong Peoples R China

ISBN: (纸本)9781479959525

Motivated by the concept of spatial modulation (SM), a differential scheme has been recently proposed. This scheme, termed as differential (D-) SM, dispenses with channel estimation while maintains a similar bit error rate (BER) performance to SM. The conventional optimal DSM detector based on a maximum likelihood (ML) criterion, however, gives rise to prohibitive computational complexity when either the space-domain or signal-domain constellation size is large. In this paper, we propose a low-complexity yet optimal detection algorithm for DSM by utilizing sphere decoding (SD). The complexity analysis concerning Euclidian distance equation for DSM-SD is derived. Simulation results show that the proposed DSM-SD algorithm maintains an identical BER performance and achieves a significant reduction of computational complexity compared with the DSM-ML algorithm. The DSM-SD algorithm is especially efficient when the number of receive antennas is large. Moreover, compared with SD applied to SM, its application to DSM is verified to be more useful and attractive.

关键词： Bit error rate

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Haptic intelligent interfaces for NAO robot hand control

Haptic intelligent interfaces for NAO robot hand control

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International Conference on Advanced Mechatronic systems (ICAMechS)

作者： Octavian Melinte Luige Vladareanu Ligia Munteanu Hongnian Yu Shuang Cang Zeng-Guang Hou Gui-Bin Bian Hongbo Wang Dept. Robotics and Mechatronics Institute of Solid Mechanics of Romanian Academy Bucharest Romania Engineering and Computing Bournemouth University Dorset UK State Key Laboratory of Management and Control for Complex Systems Chinese Academy of Sciences Beijing China Parallel Robot and Mechatronic Sys. Lab. Yanshan University Qinhuangdao China

The paper presents a new approach on haptic interface control for NAO robotic hand. The haptic teleoperation of NAO robot hand raises some issues, mapping the haptic device dynamic being the most important. The mapping was achieved through Neural Network by determining a dynamic gain of robot haptic feedback. The results lead to the achievement of the haptic intelligent interfaces for the NAO robot hand control which can be integrated into an innovative haptic robot control system.

关键词： Decision support systems Humanoid robots Haptic interfaces Economic indicators Joints Mechatronics

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A social choice force model for estimating collective action manipulation 19

A social choice force model for estimating collective action...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Zhang, Jie Zeng, Shuai Liu, Wenli Wang, Tao Wang, Fei-Yue Chen, C.L. Philip State Key Lab. of Management and Control for Complex Systems CASIA Beijing100190 China National University of Defense Technology Hunan410073 China University of Macau China

ISBN: (纸本)9783902823625

For e-commerce websites collective actions have significant influence on the behaviors and decisions of individual customers. In this work, we propose a dynamic utility model for customers in e-commerce by considering a "social choice force" (SCF) effect on utility functions of agents. We apply the Artificial societies, Computational experiments, and Parallel execution (ACP) approach to investigate the short-term efforts of collective action manipulation. Experimental results show that the proposed agent model and algorithm outperform the baseline prediction algorithm and illustrate the effect of collective action manipulation in a group buying directory website. © IFAC.

关键词： Software agents

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A new stochastic budget distribution model with random demands 18

A new stochastic budget distribution model with random deman...

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18th Pacific Asia Conference on Information systems, PACIS 2014

作者： Qin, Rui Yuan, Yong Li, Juanjuan State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China Qingdao Academy of Intelligent Industries Qingdao China

In search auctions, when the total budget for an advertising campaign during a certain promotion period is determined, advertisers have to distribute their budgets over a series of sequential temporal slots (e.g., daily budgets). However, due to the uncertainties existed in search markets, advertisers can only obtain the value range of budget demand for each temporal slot based on promotion logs. In this paper, we present a stochastic model for budget distribution over a series of sequential temporal slots during a promotion period, considering the budget demand for each temporal slot as a random variable. We study some properties and present feasible solution algorithms for our budget model, in the case that the budget demand is characterized either by uniform random variable or normal random variable. We also conduct some experiments to evaluate our model with the empirical data. Experimental results show that the budget demand is more likely to be normal distributed than uniform distributed, and our strategy can outperform the baseline strategy commonly used in practice.

关键词： Marketing

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Differential spatial modulation in V2X

Differential spatial modulation in V2X

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European Conference on Antennas and Propagation, EuCAP

作者： Meng Zhang Xiang Cheng Liu-Qing Yang School of Electronics Engineering and Computer Science Peking University Beijing China National Mobile Communications Research Laboratory Southeast University Nanjing China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China Qingdao Academy of Intelligent Industries Qingdao Shandong Province China

The rapid development of vehicle-to-vehicle and vehicle-to-infrastructure (V2X) communications calls for highly spectral efficient communication techniques under time-selective channels. Spatial modulation (SM) facilitates flexible trade-off between spectral and energy efficiency. In this paper, we propose a novel modulation technique based on SM for V2X, which discards the requirement of channel state information (CSI) at the receiver and exhibits enhanced robustness against time-selective fading and Doppler effects. Our proposed scheme tailors differential modulation to SM and is named differential spatial modulation (DSM). Monte Carlo simulations are carried out to demonstrate the advantage of the new scheme in terms of bit error rate (BER) performance for both point-to-point and dual-hop amplify-and-forward (AF) relaying systems in V2X channels.

关键词： Modulation Bit error rate Transmitting antennas Relays Vehicles MIMO Receiving antennas

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Second-Order Consensus of Networked Mechanical systems With Communication Delays 11

Second-Order Consensus of Networked Mechanical Systems With ...

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11th World Congress on intelligent control and Automation

作者： Wang, Hanlei Cheng, Long Beijing Inst Control Engn Sci & Technol Space Intelligent Control Lab Beijing 100190 Peoples R China Chinese Acad Sci Inst Automat State Key Lab Management & Control Complex Syst Beijing 100190 Peoples R China

ISBN: (纸本)9781479958252

In this paper, we address the second-order consensus problem for networked mechanical systems on a directed topology in the case of existence of nonuniform communication delays. To realize the goal of second-order consensus, we propose an adaptive consensus scheme that consists of an adaptive controller and a distributed velocity observer. It is demonstrated that the position and velocity consensus errors between the mechanical systems converge to zero, and that the velocities of the mechanical systems converge to the scaled weighted average of their initial values. We further demonstrate that the proposed consensus scheme can be used to solve the second-order consensus problem for multiple mechanical systems with a constant-velocity leader. The performance of the proposed consensus scheme is shown by a numerical simulation.

关键词： Second-order consensus communication delay networked mechanical systems uncertainties adaptive control

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A novel defect detection and identification method in optical inspection

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NEURAL COMPUTING & APPLICATIONS 2014年第7-8期24卷 1953-1962页

作者： Xie, Liangjun Huang, Rui Gu, Nong Cao, Zhiqiang Nec Labs China Beijing 100084 Peoples R China Deakin Univ Ctr Intelligent Syst Res Waurn Ponds Vic 3216 Australia Chinese Acad Sci Inst Automat State Key Lab Management & Control Complex Syst Beijing 100190 Peoples R China

Optical inspection techniques have been widely used in industry as they are non-destructive. Since defect patterns are rooted from the manufacturing processes in semiconductor industry, efficient and effective defect detection and pattern recognition algorithms are in great demand to find out closely related causes. Modifying the manufacturing processes can eliminate defects, and thus to improve the yield. Defect patterns such as rings, semicircles, scratches, and clusters are the most common defects in the semiconductor industry. Conventional methods cannot identify two scale-variant or shift-variant or rotation-variant defect patterns, which in fact belong to the same failure causes. To address these problems, a new approach is proposed in this paper to detect these defect patterns in noisy images. First, a novel scheme is developed to simulate datasets of these 4 patterns for classifiers' training and testing. Second, for real optical images, a series of image processing operations have been applied in the detection stage of our method. In the identification stage, defects are resized and then identified by the trained support vector machine. Adaptive resonance theory network 1 is also implemented for comparisons. Classification results of both simulated data and real noisy raw data show the effectiveness of our method.

关键词： Optical inspection Defect detection Classification Support vector machine Adaptive resonance theory network

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Vehicle License Plate Recognition Based on Class-specific ERs and SaE-ELM 17

Vehicle License Plate Recognition Based on Class-specific ER...

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IEEE 17th International Conference on intelligent Transportation systems (ITSC)

作者： Gou, Chao Wang, Kunfeng Li, Bo Wang, Fei-yue Qingdao Acad Intelligent Ind Qingdao 266109 Peoples R China Chinese Acad Sci Inst Automat State Key Lab Management & Control Complex Syst Beijing 100190 Peoples R China

ISBN: (纸本)9781479960781

In this paper, an effective approach to vehicle license plate recognition based on Extremal Regions (ERs) and Self-adaptive Evolutionary Extreme Learning Machine (SaE-ELM) is proposed. In the license plate detection step, some computations including morphological operations, various filters, different contours and validations are sequentially performed to extract some image regions as candidate license plates. Then, accurate character segmentation is achieved through a proper selection of ERs. In the character recognition step, the HOG (histogram of oriented gradients) feature vector in each character region is extracted, and then the characters are recognized using an offline trained pattern classifier of SaE-ELM. Experimental results show that our approach works quite well in complex traffic environments.

关键词： Learning systems

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Visual Vehicle Tracking Based on Conditional Random Fields 17

Visual Vehicle Tracking Based on Conditional Random Fields

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IEEE 17th International Conference on intelligent Transportation systems (ITSC)

作者： Liu, Yuqiang Wang, Kunfeng Wang, Fei-Yue Qingdao Acad Intelligent Ind Qingdao 266109 Peoples R China Chinese Acad Sci State Key Lab Management & Control Complex Syst Inst Automat Beijing 100190 Peoples R China

ISBN: (纸本)9781479960781

This paper proposes an approach to moving vehicle tracking in surveillance videos based on conditional random fields (CRF). The key idea is to integrate a variety of relevant knowledge about vehicle tracking into a uniform probabilistic framework by using the CRF model. In this work, the CRF model integrates spatial and temporal contextual information of vehicle motion, and the appearance information of the vehicle. An approximate inference algorithm, loopy belief propagation, is used to recursively estimate the vehicle region from the history of observed images. Moreover, the background model is updated adaptively to cope with non-stationary background processes. Experimental results show that the proposed approach is able to accurately track moving vehicles in monocular image sequences. Besides, region-level tracking realizes precise localization of vehicles.

关键词： Vehicle tracking conditional random fields region-level tracking

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sEMG-based single-joint active training with iLeg—A horizontal exoskeleton for lower limb rehabilitation

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Lecture Notes in Computer Science

作者： Hu, Jin Hou, Zeng-Guang Peng, Liang Peng, Long Gu, Nong State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing100190 China Centre for Intelligent Systems Research Deakin University 75 Pigdons Road Waurn PondsVIC3216 Australia

ISBN: (纸本)9783319126425

In this paper, surface electromyography (sEMG) from muscles of the lower limb is acquired and processed to estimate the singlejoint voluntary motion intention, based on which, two single-joint active training strategies are proposed with iLeg, a horizontal exoskeleton for lower limb rehabilitation newly developed at our lab.ratory. In damping active training, the joint angular velocity is proportionally controlled by the voluntary effort derived from sEMG, performing as an ideal damper, while spring active training aims to create a spring-like environment where the joint angular displacement from the constant reference is proportionally controlled by the voluntary effort. Experiments are conducted with iLeg and one healthy male subject to validate the feasibility of the two single-joint active training strategies. © Springer International Publishing Switzerland 2014.

关键词： Exoskeleton (Robotics)

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