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2014 14th International Conference on Control, Automation and Systems (ICCAS 2014)最新文献

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Soft sensor design with state estimator for lipid estimation of microalgal photobioreactor system 基于状态估计器的微藻光生物反应器系统脂质估计软传感器设计
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6987757
Sung Jin Yoo, J. H. Kim, J. M. Lee
Microalgae have received considerable attention as a source of biodiesel since they contain large amounts of lipid. However, microalgal biodiesel is not economically competitive compared to other sources of biodiesel or petrodiesel. To improve the productivity of lipid and biomass in photobioreactor systems, real-time monitoring and control are prerequisite. However, measurement of lipid in microalgae itself is very difficult and time consuming task, and it is not easy to know the lipid concentration in real-time. In this study, estimation of lipid concentration using other online measurements from biomass or glucose sensor was studied. Extended Kalman Filter (EKF), Unscented Kalman Filter (UKF), and Particle Filter (PF) were compared in various cases for their applicability to photobioreactor systems. Furthermore, simulation studies to find appropriate types of sensors for estimating lipid have also been performed. This study suggests what filters and what type of sensors are suitable for estimating lipid concentration on-line.
由于微藻含有大量的脂质,因此作为生物柴油的一种来源受到了相当大的关注。然而,与其他生物柴油或石油柴油相比,微藻生物柴油在经济上并不具有竞争力。为了提高光生物反应器系统中脂质和生物质的生产效率,实时监测和控制是先决条件。然而,微藻脂质本身的测量是一项非常困难和耗时的任务,并且不容易实时了解脂质浓度。在这项研究中,脂质浓度的估计使用其他在线测量从生物量或葡萄糖传感器进行了研究。扩展卡尔曼滤波器(EKF)、无气味卡尔曼滤波器(UKF)和粒子滤波器(PF)在各种情况下对光生物反应器系统的适用性进行了比较。此外,还进行了模拟研究,以找到适当类型的传感器来估计脂质。本研究提出了适合在线估计脂质浓度的过滤器和传感器类型。
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引用次数: 0
Optimal design and operation of an extractive fermentation process for continuous biobutanol production 连续生产生物丁醇提取发酵工艺的优化设计与运行
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6987758
Boeun Kim, Hong Jang, Moon-Ho Eom, Jay H. Lee
Biobutanol is considered to be a promising choice for renewable fuel due to its high energy content, low volatility, and low water solubility. However, the production of biobutanol through fermentation is complicated by the fact that butanol inhibits the microorganism's cell growth and therefore the butanol production when its concentration in the fermentation broth reaches a certain critical level. In order to raise the volumetric productivity to a commercially acceptable level, produced biobutanol needs to be separated out as the fermentation is on-going. In this study, a continuous extractive fermentation process integrated with an ex-situ adsorption recovery process is studied to overcome this limitation. Switching of the adsorption column upon the saturation yields a continuous process with a cyclic steady state behavior. A dynamic model for the integrated process is developed and an optimization is performed based on the cyclic steady state analysis in order to design an optimal operation strategy that satisfies given requirements.
生物丁醇因其高能量含量、低挥发性和低水溶性而被认为是一种有前途的可再生燃料选择。但是,当丁醇在发酵液中的浓度达到一定的临界水平时,丁醇会抑制微生物的细胞生长,从而抑制丁醇的生产,这使得通过发酵生产生物丁醇变得复杂。为了将体积产率提高到商业上可接受的水平,在发酵过程中需要将产生的生物丁醇分离出来。在本研究中,研究了一种结合原位吸附回收工艺的连续提取发酵工艺来克服这一局限性。在饱和状态下切换吸附柱产生一个具有循环稳态行为的连续过程。为了设计出满足给定要求的最优运行策略,建立了集成过程的动态模型,并基于循环稳态分析进行了优化。
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引用次数: 1
Dynamic analysis of the spinal-pelvic motion match during feline galloping for speed increase into quadruped robotic system 猫在四足机器人系统中加速奔跑时脊柱-骨盆运动匹配的动力学分析
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6987756
Young Kook Kim, Jongwon Park, Byungho Yoon, Kyung-Soo Kim, Soohyun Kim
In terms of the speed performance in feline galloping, relative spinal motion is observed as a key role to increase the locomotion speed. In order to prove this, a domestic cat was observed to investigate galloping gait patterns of the feline. Based on the measurement of the dynamic behavior of a domestic cat, we observed a significant increase in speed through correlated angular rate changes of spinal segments. To support the motion into a quadruped system, the hindlimb stance phase was analyzed using a 2 dimensional planar dynamic model to verify that the external torque generated by spinal motion plays an important role in increasing the ground reaction force in the direction of movement. To verify the analysis, the dynamic simulation demonstrating the hindlimb stance was applied with 3 parameter variations: time, phase and the amplitude of the fitted relative angular velocity profile.
在猫科动物驰骋的速度表现中,相对脊柱运动是提高运动速度的关键。为了证明这一点,我们观察了一只家猫,研究了它奔跑的步态模式。基于对家猫动态行为的测量,我们观察到通过脊柱节段的相关角速率变化,速度显著增加。为了支持四足系统的运动,采用二维平面动力学模型分析了后肢站立相位,验证了脊柱运动产生的外扭矩对增加运动方向上的地面反作用力起重要作用。为了验证这一分析,在拟合的相对角速度剖面的时间、相位和幅值3个参数变化的情况下,进行了后肢姿态的动态仿真。
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引用次数: 0
Object tracking using KLT aided mean-shift object tracker (ICCAS 2014) 利用KLT辅助平均位移目标跟踪器进行目标跟踪(ICCAS 2014)
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6987974
Sun-Ho Kim, Jungho Kim, Youngbae Hwang, Byoung-Tae Choi, J. Yoon
In this paper, we present a new object tracking algorithm which integrates color-based mean-shift and feature-based optical flow methods. To utilize two approaches in the complimentary manner, we iteratively compute the mean-shift vector based on color histograms and tracked features by KLT. In the experiments, we show the improved performance for partial occlusion and severe appearance changes in the representative benchmark sequences.
本文提出了一种新的目标跟踪算法,该算法将基于颜色的均值位移和基于特征的光流方法相结合。为了以互补的方式利用两种方法,我们基于颜色直方图和KLT跟踪特征迭代计算mean-shift向量。在实验中,我们在具有代表性的基准序列中展示了部分遮挡和严重外观变化的改进性能。
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引用次数: 1
When path tracking using look-ahead distance about the lateral error method and the velocity change method tracking comparison 路径跟踪时采用前瞻距离法对横向误差法和速度变化法进行跟踪比较
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6987822
Jun-beom Park, S. Bae, B. Koo, Jung-ha Kim
Method of improving the safety of autonomous vehicles are diverse. In particular, Path Tracking phase which is the last step and important to operate an autonomous vehicle. Method of Path tacking are diverse. Kinematic and dynamic methods is typically methods. In this study, Among Kinematic method, Pure pursuit is used by using the path tracking. Commonly pure pursuit is used to path tracking of mobile robots. Pure pursuit is selected target point and is path traced When selecting the tracking target point, the traveling speed is low or, in certain cases, to extract the following target point at a fixed distance. However, the speed and the path of autonomous vehicle is continually changing. Therefore, the selection method of tracking a target point of the fixed distance, can inhibit the behavioral stability of the vehicle. Also affect the path tracking performance. Therefore, changing of the tracking target point is advantageous.
提高自动驾驶汽车安全性的方法多种多样。特别是路径跟踪阶段,这是自动驾驶汽车的最后一步,也是非常重要的一步。路径定位方法多种多样。运动学和动力学方法是典型的方法。在运动学方法中,采用路径跟踪的方法进行纯追踪。移动机器人的路径跟踪通常采用纯追踪的方法。纯跟踪是选定目标点,跟踪路径。在选择跟踪目标点时,行驶速度较低,或者在某些情况下提取固定距离的后续目标点。然而,自动驾驶汽车的速度和路径是不断变化的。因此,选择距离固定的目标点进行跟踪的方法,会抑制车辆的行为稳定性。也会影响路径跟踪性能。因此,改变跟踪目标点是有利的。
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引用次数: 6
Preliminary study of utilizing plastic tubes as a component of continuum robots 利用塑料管作为连续体机器人部件的初步研究
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6987989
Denys Makarets, G. Noh, Keri Kim, Deukhee Lee
Continuum robots, new class of dexterous and thin robots, can be applied in great variety of minimal invasive surgical operations. These robots consist of two parts: manipulator, also called active cannula, and control unit. Manipulators, which are composed of concentric precurved tubes(usually 2-3), commonly made from nitinol, can enter human body through small incisions or natural orifices and, after reconfiguration into more complex structure, guide surgical instruments to the target regions avoiding obstacles. In this paper, we propose to use plastic as the material for innermost tube. Variations in the shape of lab-made concentric precurved plastic tube prototypes after numerous extension-retractions are investigated. We also use kinematic model, based on beam mechanics, for capturing the end-effector tip position and the shape of the two manipulators (I - manipulator is composed of one nitinol tube and one plastic tube prototype; II - manipulator is composed of two nitinol tubes and one plastic tube prototype). The model predictions are compared with the experimental results. Preliminary results show that plastic tubes may have small radii of precurvature, and sustain extension-retraction without self-damage thus potentially can be used as a component of continuum robots.
连续体机器人是一种新型的灵巧、轻薄的机器人,可用于多种微创外科手术。这些机器人由两部分组成:机械手,也称为主动导管,和控制单元。机械手由同心预弯曲管(通常为2-3根)组成,通常由镍钛诺制成,可以通过小切口或天然孔进入人体,重新配置成更复杂的结构后,引导手术器械避开障碍物到达目标区域。在本文中,我们建议使用塑料作为最内层管的材料。研究了实验室制造的同心预弯曲塑料管原型在多次伸缩后的形状变化。我们还利用基于梁力学的运动学模型,捕获了末端执行器的尖端位置和两个机械手的形状(I -机械手由一个镍钛诺管和一个塑料管原型组成;II -机械手由两根镍钛诺管和一根塑料管原型组成。将模型预测结果与实验结果进行了比较。初步结果表明,塑料管材具有较小的预曲率半径,并能在不发生自损伤的情况下进行伸缩,因此有可能作为连续体机器人的组成部分。
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引用次数: 2
Development of dual arm robot platform for automatic assembly 双臂机器人自动装配平台的研制
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6988013
D. Park, Chanhun Park, Hyunmin Do, Taeyong Choi, J. Kyung
A dual arm robot is one of the most popular issue on the robotic field. Because a dual arm robot has two arms like humans, it can conduct the complex handling task and the jigless assembly task which cannot be performed by a single arm robot. Also, it is expected to substitute for humans and do better performance than humans in the industrial manufacturing. In the paper, we proposed a dual arm robot system with a mobile platform for the automatic assembly of electrical devices and it was developed through kinematic and dynamic analysis. Kinematic analysis was performed for the workspace and dynamic analysis was carried out for the robot specification.
双臂机器人是机器人领域的热点问题之一。由于双臂机器人和人类一样拥有两条手臂,因此它可以完成单臂机器人无法完成的复杂搬运任务和无夹具装配任务。在工业制造中,它有望取代人类,取得比人类更好的成绩。本文提出了一种具有移动平台的双臂机器人系统,并对其进行了运动学和动力学分析。对工作空间进行了运动学分析,对机器人规格进行了动力学分析。
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引用次数: 7
Recognition of object by extended Histograms of Oriented Gradients (EHOG) on route for a mobile robot 基于扩展方向梯度直方图(EHOG)的移动机器人路径目标识别
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6987929
Yuri Shimanuki, K. Hidaka
This paper presents a recognition of obstacle and objects for an industrial a mobile robot, e.g., an automated guided vehicle (AGV), by using monocular camera. The mobile robot moves for transporting same parts in a factory where the robot has to pass a production line. An accurate recognition of object on the production line is required for moving the robot automatically. In addition, the robustness to luminance changes is required. During the past decades, some robust features, such as Scale Invariant Feature Transform(SIFT), Speeded Up Robust Features(SURF), Histograms of Oriented Gradients(HOG), or Extended HOG(EHOG), have been proposed in computer vision and machine learning. In this paper, we focus on the robustness of EHOG and we propose a decision algorithm of objects on a path by using the machine learning based on EHOG.We show that experimental results are provided and the usefulness of the proposed algorithm is introduced by these results.
针对工业移动机器人,如自动导引车(AGV),提出了用单目摄像机识别障碍物和物体的方法。移动机器人在工厂中运输相同的部件,机器人必须经过生产线。为了实现机器人的自动移动,需要对生产线上的物体进行准确的识别。此外,对亮度变化的鲁棒性也有要求。在过去的几十年里,一些鲁棒特征,如尺度不变特征变换(SIFT),加速鲁棒特征(SURF),定向梯度直方图(HOG)或扩展HOG(EHOG),已经在计算机视觉和机器学习中被提出。本文重点研究了EHOG的鲁棒性,提出了一种基于EHOG的机器学习的路径对象决策算法。我们给出了实验结果,并通过这些结果介绍了所提算法的有效性。
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引用次数: 1
A time synchronized multi-robot coverage algorithm for unstructured environment 非结构化环境下的时间同步多机器人覆盖算法
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6988042
Tae-Shin Kim, Young-Ho Lee, Jong-Koo Park, Tae-Yong Kuc, S. Ji, Sang-Moo Lee, Y. Moon
This paper considers a design problem for time synchronized coverage control of cooperative mobile robots. The derived algorithm provides a coverage control which not only considers the mobility characteristic of each mobile robot for task allocation but generates robot velocity profile for synchronized coverage completion within the constrained time. Since the environment for robot coverage work is modeled as a set of locations to visit by robots, the derived coverage algorithm and its control method are equally well suited to an unstructured working environment as to the structured work space. In determining the number of locations for each robot to visit during coverage operation, a time index derived from the minimum time velocity profile is used for the comparison of robot performance. Once the set of locations has been determined for each robot, the corresponding path tree and velocity profile are generated for synchronized execution of coverage work. The completeness of synchronized group coverage within the constrained time is proven through simulation for a group of mobile robots with different motor characteristics. An additional consideration by the derived coverage controller is collision avoidance of mobile robots in a crowded environment with the aid of finite potential function approach.
研究了协作移动机器人时间同步覆盖控制的设计问题。该算法提供了一种覆盖控制方法,该方法不仅考虑每个移动机器人的机动性特征进行任务分配,而且生成机器人速度轮廓,在约束时间内同步完成覆盖。由于机器人覆盖工作的环境被建模为机器人要访问的一组地点,因此所推导的覆盖算法及其控制方法既适用于结构化的工作空间,也同样适用于非结构化的工作环境。在确定覆盖操作期间每个机器人访问的位置数量时,使用从最小时间速度剖面导出的时间指标来比较机器人的性能。一旦确定了每个机器人的位置集,就会生成相应的路径树和速度剖面,以便同步执行覆盖工作。通过对一组具有不同运动特性的移动机器人进行仿真,证明了在约束时间内同步群体覆盖的完备性。所导出的覆盖控制器还考虑了利用有限势函数方法避免移动机器人在拥挤环境中的碰撞问题。
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引用次数: 5
Online black-box model identification and output prediction for sampled-data systems 样本数据系统的在线黑盒模型识别与输出预测
Pub Date : 2014-12-18 DOI: 10.1109/ICCAS.2014.6987543
Asim Zaheer, M. Salman
In this work, black-box model identification and output prediction for unknown sampled-data minimum phase system has been achieved. Feedforward neural network (multilayer perceptron) is used for system identification. Unscented Kalman Filter (UKF) online determine weights of neural network and predicts output in open-loop sampled-data configuration. Magnetic levitation and DC motor model has been identified in computer simulations using the presented black-box identification and prediction scheme.
本文实现了未知采样数据最小相位系统的黑盒模型识别和输出预测。采用前馈神经网络(多层感知器)进行系统辨识。Unscented卡尔曼滤波器(UKF)在线确定神经网络的权值并预测开环采样数据配置下的输出。利用所提出的黑盒识别和预测方案,在计算机仿真中对磁悬浮和直流电机模型进行了识别。
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引用次数: 0
期刊
2014 14th International Conference on Control, Automation and Systems (ICCAS 2014)
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