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2019 International Automatic Control Conference (CACS)最新文献

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Convergence Improvement of Q-learning Based on a Personalized Recommendation System 基于个性化推荐系统的q学习收敛改进
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024742
Chia-Ling Chiang, M. Cheng, Ting-Yu Ye, Ya-Ling Chen, Pin-Hsuan Huang
Reinforcement Learning (RL) – a research branch of artificial intelligence – exploits the concept of reward/penalty from human learning so that the feedback information of the environment can be used for self-learning without previous knowledge. Although RL has been applied to many research fields, there are difficulties when implementing it in some real world applications. One difficulty is the tradeoff between exploration and exploitation for the agent of RL in choosing a proper action. An improper action may lead to a learning failure or an increase in learning cost. Another difficulty is that the learning agent of RL needs to interact with the environment to attain a real-time reward/penalty; however, the learning time spent in the interaction process may be too long. In order to overcome the aforementioned difficulties, this paper proposes an approach that employs a personalized recommendation system to provide a feedforward candidate action for RL to implement self-adaptive learning through teaching. A real visual tracking experiment using a pan-tilt camera system is conducted to assess the performance of the proposed approach. Experimental results show that the proposed personalized recommendation system-based approach is able to improve the effectiveness and practicality of RL.
强化学习(RL)是人工智能的一个研究分支,它利用人类学习的奖惩概念,使环境的反馈信息可以在没有先验知识的情况下用于自我学习。虽然强化学习已经应用于许多研究领域,但在一些实际应用中,它的实现存在困难。其中一个困难是RL的代理人在选择适当的行为时要权衡探索和利用之间的关系。不当的行为可能导致学习失败或增加学习成本。另一个困难是强化学习的学习代理需要与环境互动以获得实时奖励/惩罚;然而,在交互过程中花费的学习时间可能太长。为了克服上述困难,本文提出了一种采用个性化推荐系统为强化学习提供前馈候选动作的方法,通过教学实现自适应学习。通过一个真实的视觉跟踪实验,验证了该方法的性能。实验结果表明,本文提出的基于个性化推荐系统的方法能够提高强化学习的有效性和实用性。
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引用次数: 2
Sea Testing of Automatic Motion Control System for a Quad-Maran Unmanned Vessel 四maran无人船自动运动控制系统的海上试验
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024363
Makoto Komizo, Kota Mukai, N. Hara, Y. Nihei, K. Konishi
This paper considers a motion control system for a quad-maran unmanned vessel, which is aiming for automatic sea environmental monitoring. We present a PID-based control law for straight path following in a quad-maran vessel. Operation test results at a real aquaculture farm to show the validly of the control system are reported.
研究了一种以海上环境自动监测为目标的四人无人船运动控制系统。提出了一种基于pid的四人船直线路径跟踪控制律。报道了实际养殖场的运行试验结果,验证了该控制系统的有效性。
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引用次数: 0
Design and Implementation of a Cross-Camera Suspect Tracking System 跨摄像机嫌疑人跟踪系统的设计与实现
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024367
Yu-Hsueh Chuo, Ruey-Kai Sheu, Lun-Chi Chen
Surveillance systems are everywhere deployed for criminal prevention and suspect tracking for specific security events. The recognition of the target person cross multiple cameras remains a challenge because of the large spatio-temporal uncertainty, which means the entry and the exit of persons in cameras are unpredictable. Therefore, this study design and implement a software system that help users to continuous and stable track of the same target person across multiple cameras. Firstly, the system leverages YOLO and Correlation filter to track the suspicious in single camera. The features of the target suspect are also collected in this stage. Once the target person leaves the scope of a camera, the camera network topology is used to predict the candidate entrance cameras based on the geographical information and tracking path in the first stage. In the second stage, the person re-identification algorithm is used to calculate the similarity possibility and help to identify the person automatically between cameras. Experimental results on public datasets show our system can accurately recognize the target suspect across cameras with acceptable system performance.
监控系统无处不在,用于犯罪预防和特定安全事件的嫌疑人跟踪。由于存在很大的时空不确定性,即人在摄像机中的进出是不可预测的,因此跨多个摄像机对目标人的识别仍然是一个挑战。因此,本研究设计并实现了一个软件系统,可以帮助用户在多个摄像机中连续稳定地跟踪同一目标人。首先,该系统利用YOLO和相关滤波器对单个摄像机中的可疑目标进行跟踪。在这一阶段也收集目标嫌疑人的特征。在第一阶段,一旦目标人物离开摄像机范围,利用摄像机网络拓扑根据地理信息和跟踪路径预测候选入口摄像机。在第二阶段,使用人物再识别算法计算相似可能性,帮助在相机之间自动识别人物。在公共数据集上的实验结果表明,我们的系统可以准确地识别目标嫌疑人,并且系统性能可以接受。
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引用次数: 2
Performance evaluation of temporal features for detection of mild cognitive impairment: An fNIRS study 时间特征对轻度认知障碍检测的性能评价:一项近红外光谱研究
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024353
U. Ghafoor, M. A. Yaqub, K. Hong
A decline in cognition characterized by the deficit in memory, judgment, and language is known as mild cognitive impairment (MCI). This deficiency has great likelihood of developing Alzheimer’s disease (AD). Hence, the recognition of MCI or an early stage of AD is critical at earliest for evaluation and treatment. In this study, functional near-infrared spectroscopy (fNIRS) was used to measure the concentration changes of oxygenated hemoglobin (ΔHbO) from the pre-frontal cortex of six healthy controls (HC) and six MCI patients during a working memory task. Various temporal features of ΔHbO, such as mean, slope, kurtosis, skewness, and peak-values, were tested for distinguishing MCI patients from HCs. We further investigated the impact of intervention (i.e., acupuncture treatment) on MCI patients (i.e., MCI-1: before intervention, MCI-2: after intervention). Both groups went through fNIRS recording procedure with a gap of 45 days. Before the second fNIRS measurement, only the patient group underwent interventions twice per week for six weeks. The results showed that the mean ΔHbO response of MCI-1 was significantly less than (p < 0.05) that of HC but similar (p > 0.05) with MCI-2. Out of tested temporal features, signal mean and peak values of HC were significantly different (p = 0.0409, p = 0.0430) in comparison to MCI-1 but no significant difference (p = 0.4885, p = 0.4437) if MCI-2. Moreover, these fNIRS results were positively correlated with cognitive test scores. These preliminary results showed that fNIRS can be used for distinguishing MCI patients from HCs using mean hemodynamic response as well as temporal features.
以记忆、判断和语言缺陷为特征的认知能力下降被称为轻度认知障碍(MCI)。这种缺陷极有可能导致阿尔茨海默病(AD)。因此,识别MCI或早期AD对于早期评估和治疗至关重要。本研究采用功能性近红外光谱(fNIRS)测量了6例健康对照(HC)和6例轻度认知障碍(MCI)患者在工作记忆任务期间前额叶皮层含氧血红蛋白(ΔHbO)的浓度变化。测试ΔHbO的各种时间特征,如平均值、斜率、峰度、偏度和峰值,以区分MCI患者和hcc患者。我们进一步研究了干预(即针灸治疗)对MCI患者(即干预前MCI-1,干预后MCI-2)的影响。两组均进行fNIRS记录,间隔45天。在第二次fNIRS测量之前,只有患者组每周进行两次干预,持续六周。结果显示,MCI-1的平均ΔHbO应答率显著低于HC (p < 0.05),但与MCI-2相似(p > 0.05)。在测试的时间特征中,HC的信号均值和峰值与MCI-1相比有显著差异(p = 0.0409, p = 0.0430),而与MCI-2相比无显著差异(p = 0.4885, p = 0.4437)。此外,这些fNIRS结果与认知测试成绩呈正相关。这些初步结果表明,fNIRS可以通过平均血流动力学反应和时间特征来区分MCI患者和hcc患者。
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引用次数: 1
Parametric synthesis of a robust controller on a base of D-partition and method of dominant poles 基于d划分和优势极点法的鲁棒控制器参数综合
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024735
S. Gayvoronskiy, T. Ezangina, I. Khozhaev
The paper is dedicated to a problem of parametric synthesis of a controller for a control system having interval parameters and affine uncertainty of characteristic polynomial coefficients. Such polynomial can be represented as a sum of productions of interval parameters and polynomials including zero and real poles. The paper proposes a method of synthesizing a linear robust controller placing system poles allocation areas according to desired control quality. The method is based on dividing parameters of a controller in two groups: restricted ones and unrestricted ones. Restricted parameters of a controller provide desired allocation of a dominant pole; unrestricted parameters determine allocation of all other poles of a system. In this case, the right border of an allocation area of a dominant pole defines minimal stability degree of a system synthesized. Values of controller parameters are proposed to be found via D-partition in vertices of a interval parameters’ polytope. An example of the proposed method application is provided.
研究具有区间参数和特征多项式系数仿射不确定性的控制系统的控制器参数综合问题。这样的多项式可以表示为区间参数和包含零极点和实极点的多项式的乘积的和。本文提出了一种综合线性鲁棒控制器的方法,根据期望的控制质量设置系统极点分配区域。该方法基于将控制器参数分为两组:受限控制器和非受限控制器。控制器的受限参数提供支配极点的期望分配;不受限制的参数决定了系统所有其他极点的分配。在这种情况下,优势极分配区域的右边界定义了合成系统的最小稳定度。提出了在区间参数多面体的顶点上通过d划分求控制器参数值的方法。最后给出了该方法的应用实例。
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引用次数: 1
Torque Control of the Floating Vertical Axis Wind Turbine with a Frictional Power Take-off System 带摩擦动力输出系统的浮式垂直轴风力机转矩控制
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024733
Shunsuke Maura, N. Hara, H. Akimoto, K. Konishi
A torque control law is proposed for floating axis wind turbine (FAWT), which is a new concept of floating wind turbines. The control law consists of the well-known maximum power point tracking control (Cp-max control) and maximum friction control. Numerical simulation shows that the control law achieves the maximum power capture under changes in operating conditions.
提出了浮动轴风力机的转矩控制律,这是浮动轴风力机的一种新概念。控制律由最大功率点跟踪控制(Cp-max控制)和最大摩擦控制组成。数值仿真表明,该控制律在工况变化情况下实现了最大功率捕获。
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引用次数: 1
The studies on Automated Road Safety Monitoring System and Real-Time Traffic Reporting System of an Automatic Vehicle 自动道路安全监控系统与自动车辆实时交通报告系统的研究
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024356
Sheng-Fuu Lin, Nien-Tzu Hsieh, Y. Jiang, Yuan-Cheng Hsieh
As technology develops and time progresses continuously, the automation technology is becoming increasingly significant in various fields. Automated road safety is an important issue nowadays. When the automatic vehicles driving on the road, it is very important to detect the surrounding objects. In this paper, we propose an automatic road safety monitoring system for detecting moving objects that will affect the safety of automatic vehicle. On the other hand, we propose a real-time traffic reporting system for determining the real-time traffic condition. Through above two systems, the safety and stability of the automatic vehicle can be improved.
随着技术的发展和时代的不断进步,自动化技术在各个领域的作用越来越重要。自动化道路安全是当今的一个重要问题。当自动驾驶车辆在道路上行驶时,对周围物体的检测是非常重要的。在本文中,我们提出了一种自动道路安全监控系统,用于检测影响自动车辆安全的运动物体。另一方面,我们提出了一个实时交通报告系统,以确定实时交通状况。通过以上两种系统,可以提高自动驾驶汽车的安全性和稳定性。
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引用次数: 2
A study on Machine Learning Approaches for Predicting and Analyzing the Drying Process in the Textile Industry 纺织工业干燥过程预测与分析的机器学习方法研究
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024364
Ke-Haur Taur, Xiang-Yun Deng, Mi-Huo Chou, Jing-Wei Chen, Yi-Hsiu Lee, Wen-June Wang
The main objective of this paper is to establish an output/input relationship model based on machine learning for the fabric drying process of a general textile factory. The scenario of the fabric drying process involves a conveyor belt that drives the fabric through eight drying boxes, and the targeted metric of the post-drying fabric is the moisture content rate. This paper is composed of two main parts. The first part is to explain that how to select a predictive model measuring the output performance of the setting machine. The second part discusses the optimization of energy-saving parameters of multiple models chosen in the first part. This paper will introduce some techniques such as neural networks and machine learning algorithms to find the most suitable output/input relationship model, or so called “drying process quality prediction model”, for future development of energy saving.
本文的主要目的是建立一个基于机器学习的通用纺织厂织物干燥过程的输出/输入关系模型。织物干燥过程的场景涉及传送带驱动织物通过八个干燥箱,干燥后织物的目标度量是含水率。本文主要由两个部分组成。第一部分阐述了如何选择一种预测模型来衡量定型机的输出性能。第二部分讨论了第一部分选择的多个模型的节能参数的优化。本文将引入一些技术,如神经网络和机器学习算法,以寻找最适合的输出/输入关系模型,或所谓的“干燥过程质量预测模型”,为未来的节能发展。
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引用次数: 2
Synchronized Motion Control for Electronic Differential System via Planetary Gear Mechanism 基于行星齿轮机构的电子差动系统同步运动控制
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024359
Guowei Chen, Trieu-Khang Tu, Chun-Lin Chen, M. Tsai
Considering the appealing transmission feature of planetary gear, this study presents a new electronic differential system (EDS) for electrical vehicles. The electronically-controlled transmission (E-CVT) of rear-wheel speeds regulation can be easily realized by the kinematic analysis of planetary gear. For EDS, simultaneously maintaining the trajectory and rear-wheel speeds in uncertain environments is also an essential problem. Therefore, a synchronized motion control structure is employed such that the synchronized speed error is reduced and the desired speed differential is achieved. The simulation results are given to validate the performance of the synchronized motion control for the dual E-CVT system used in EDS.
针对行星齿轮传动的特点,提出了一种新型电动汽车电子差速器系统。通过对行星齿轮的运动学分析,可以很容易地实现后轮调速的电控传动。对于EDS来说,在不确定环境中同时保持轨迹和后轮速度也是一个关键问题。因此,采用同步运动控制结构,以减少同步速度误差并实现所需的速度差。仿真结果验证了用于EDS的双E-CVT系统同步运动控制的性能。
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引用次数: 0
Development of Key Technologies for Autonomous Driving Vehicles 自动驾驶汽车关键技术的发展
Pub Date : 2019-11-01 DOI: 10.1109/CACS47674.2019.9024730
J. Tsai, J. Juang, Chia-Heng Tu, T. Tsai, P. Chung, Chih-Chung Hsu, Chao-Yang Lee, Ching-Fu Lin
Autonomous vehicles are gradually rising application of automotive area. The article performs several key technology of the autonomous vehicles in the project which are supported by the ministry of Science and Technology (MOST) of Taiwan. The project presents the technology of diversity positioning navigation, environment perception, planning and decision of the driver behavior, self-learning vehicle control and an eye-safe fiber-linked LIDAR system. Researchers and developers present the latest results according to the related integration applied and field verified.
自动驾驶汽车是汽车领域逐渐兴起的应用领域。本文对台湾科技部自主驾驶汽车项目的若干关键技术进行了研究。该项目提出了多样化定位导航、环境感知、驾驶员行为规划和决策、自学习车辆控制和人眼安全光纤连接激光雷达系统等技术。研究人员和开发人员根据相关集成应用和现场验证展示最新成果。
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引用次数: 4
期刊
2019 International Automatic Control Conference (CACS)
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