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2012 International Conference of Robotics and Artificial Intelligence最新文献

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GPS-based landmine detection system for multiple operating units 基于gps的多作战单元地雷探测系统
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413408
Salman-ul-Hassan Dar, Z. Tanzeel, F. Mahmood, U. Izhar
This paper presents the design of a landmine detection system capable of detecting landmines, IEDs and UXOs. The System has the capability to identify multiple scanner operating units and relays the landmines detected by them onto the base station via Zigbee modules. An algorithm has been designed and tested to detect mines and plot their respective positions on the map. The route followed by the operating units is also indicated. The developed system offers flexibility and support for integration with UGV and robotic manipulator for future innovations.
本文介绍了一种能够探测地雷、简易爆炸装置和未爆弹药的地雷探测系统的设计。该系统具有识别多个扫描仪操作单元的能力,并通过Zigbee模块将它们探测到的地雷中继到基站。已经设计并测试了一种算法来探测地雷并在地图上标出它们各自的位置。还指出了操作单元遵循的路线。开发的系统为未来的创新提供了与UGV和机器人机械手集成的灵活性和支持。
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引用次数: 5
Identification of fNIRS based brain activity using adaptive algorithm 基于fNIRS的脑活动自适应识别算法
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413399
K. Hong, M. M. N. Mannan
Functional near infrared spectroscopy (fNIRS) is non-invasive brain imaging techniques that detects the cortical activity by measuring the change in the concentration of oxy-hemoglobin and de-oxy hemoglobin. It uses near infrared light of two wave lengths, 760 nm and 830 nm. NIRS is emerging neuro imaging modality with high temporal resolution. The advantage of NIRS system over other neuro imaging modalities is low cost, portable, safe and somehow results in short period of time. The scalp remains intact throughout the experiment. In this study we present a method for identification of brain activity by using fNIRS data. The general linear model has been used in study with predicted blood oxygen level dependent (BOLD) response signal and its delayed versions. The normalized least mean square (NLMS) algorithm has been used for identification of unknown parameters in the model recursively. A one way t-test has been performed for the significance of results.
功能近红外光谱(fNIRS)是一种通过测量含氧血红蛋白和脱氧血红蛋白浓度变化来检测皮层活动的非侵入性脑成像技术。它使用近红外光的两个波长,760纳米和830纳米。近红外光谱是一种新兴的具有高时间分辨率的神经成像方式。与其他神经成像方式相比,近红外成像系统具有成本低、便携、安全、时间短等优点。在整个实验过程中,头皮保持完整。在这项研究中,我们提出了一种利用近红外光谱数据识别大脑活动的方法。一般线性模型已被用于预测血氧水平依赖(BOLD)反应信号及其延迟版本的研究。采用归一化最小均方(NLMS)算法对模型中的未知参数进行递归识别。对结果的显著性进行了单向t检验。
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引用次数: 4
Aerodynamic analysis and dynamic modeling of small horizontal axis wind turbine 小型水平轴风力机气动分析与动力学建模
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413406
S. Khan, A. Khan, M. Irfan, S. Hussain
In wind turbine the output torque and power depends on the incoming wind speed. Due to the rapid changes in the incoming wind speed the quality of output power becomes a serious problem. Many controls are introduced in wind turbines in order to get a constant output rated power. In this research work we have focused on dynamic analysis and Pitch control of horizontal axis wind turbine. Pitch control is one of the most useful and important control that is present in all of the current wind turbine models. For dynamic analysis and pitch control, simulation techniques and experimental works were done side by side. Simulations were carried out in ADAMS software in which a wind turbine model was imported from Pro/E. The Matlab functions calculated the wind turbine blade parameters and aerodynamic forces. The aerodynamic forces were applied on wind turbine blades in ADAMS environment. Various changes were made in wind turbine blade parameters and similarly output graphs were obtained from ADAMS post-processor. On the other side a wood model of wind turbine was made and tested by applying wind on its blades. The input wind speed was sensed by the sensors and when this speed data was given to the controller it rotated the stepper motors connected with each blade of the turbine. It showed that by introducing the pitch control the power output was successfully controlled in high and low speed conditions, and as a result the overloading and outage of the wind turbine was prevented. By modeling the wind turbine in virtual environment it became very easy to design and test various wind turbine models prior to manufacture.
在风力涡轮机的输出扭矩和功率取决于传入的风速。由于来风风速的快速变化,输出功率的质量成为一个严重的问题。为了获得恒定的输出额定功率,在风力涡轮机中引入了许多控制。本文主要研究了水平轴风力机的动力分析和俯仰控制。螺距控制是目前所有风力发电机模型中最有用和最重要的控制之一。在动力学分析和俯仰控制方面,仿真技术和实验工作并举进行。在ADAMS软件中进行仿真,并从Pro/E中导入风力机模型。利用Matlab函数计算风力机叶片参数和气动力。在ADAMS环境下对风力机叶片进行了气动力模拟。对风力机叶片参数进行各种变化,ADAMS后置处理器得到类似的输出图。另一方面,制作了一个风力涡轮机的木制模型,并通过对其叶片施加风力进行了测试。输入的风速被传感器感知,当这个速度数据被提供给控制器时,它旋转与涡轮机的每个叶片相连的步进电机。结果表明,通过引入螺距控制,成功地控制了高低速条件下的功率输出,从而防止了风力机的过载和停机。通过在虚拟环境中对风力机进行建模,使各种风力机模型在制造前的设计和测试变得非常容易。
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引用次数: 15
Integrated collision avoidance and tracking system for mobile robot 移动机器人一体化避碰跟踪系统
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413412
I. Ullah, Q. Ullah, F. Ullah, Seoyong Shin
In the intelligent transportation system, various accident avoidance techniques have been applied. Among them, one of the most common issues is the collision, which is yet unsolved problem. To this end, we develop collision warning and avoidance system (CWAS), which is implemented in the wheeled mobile robot. Likewise, path planning is a crucial problem in the mobile robots to perform a given task correctly. Here, a tracking system is presented for the mobile robot, which follows an object. Thus, we have implemented an integrated CWAS and tracking system in the mobile robot. Both systems can be activated independently. In the CWAS, the robot is controlled through a remotely controlled device, and collision prediction and avoidance functions are performed. In the tracking system, the robot performs tasks autonomously, where the robot maintains a constant distance from the followed object. The surrounding information is obtained through the range sensors, and the control functions are performed through the microcontroller. The front, left, and right sensors are activated to track the object, and all the sensors are used for the CWAS. Two algorithms based on the sensory information are developed with the distance control approach. The proposed system is tested using the binary logic controller and the fuzzy logic controller (FLC). The comparison of both controllers is also described by preferring time delay and complexity. The efficiency of the robot is improved by increasing smoothness in motion using the FLC, achieving accuracy in tracking, and advancements in the CWAS. Finally, simulation and experimental outcomes have displayed the authenticity of the system.
在智能交通系统中,各种事故避免技术得到了应用。其中,最常见的问题之一是碰撞,这是一个尚未解决的问题。为此,我们开发了碰撞预警与避免系统(CWAS),并在轮式移动机器人中实现。同样,路径规划也是移动机器人正确执行给定任务的关键问题。本文提出了一种移动机器人跟踪系统。因此,我们在移动机器人中实现了一个集成的CWAS和跟踪系统。两个系统都可以独立启动。在CWAS中,通过遥控装置对机器人进行控制,实现碰撞预测和避碰功能。在跟踪系统中,机器人自动执行任务,机器人与跟随物体保持恒定的距离。通过测距传感器获取周围环境信息,通过单片机实现控制功能。激活前、左、右传感器跟踪物体,所有传感器用于CWAS。在距离控制方法的基础上,提出了两种基于感官信息的算法。采用二值逻辑控制器和模糊逻辑控制器(FLC)对系统进行了测试。两种控制器的比较也通过偏好时延和复杂度来描述。通过使用FLC增加运动的平滑度,实现跟踪的准确性,以及CWAS的进步,提高了机器人的效率。最后,仿真和实验结果验证了系统的真实性。
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引用次数: 11
CoGMI: Coordinated gestures for one-handed mobile interaction CoGMI:用于单手移动交互的协调手势
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413379
Muhammad Mohsin Rohani, Muhammad Tahir, Arif Mushtaq
Interacting with touch screen mobiles using thumb is nowadays becoming a common practice. Techniques have been developed to provide the ease of use in interacting with touch screen using thumb. These techniques were rather inefficient in terms of time and error. We propose a model CoGMI which describes an interaction technique which that is the combination of coordinated gestures (drag gestures) and direct touch. The proposed model could be helpful in minimizing the issues such as 1) distant targets reach, 2) the selection of distant targets, 3) accidental selection of targets, 4) occlusion, and 5) accuracy.
如今,用拇指与触屏手机互动已经成为一种普遍的做法。技术已经发展到提供使用拇指与触摸屏交互的易用性。这些技术在时间和误差方面相当低效。我们提出了一个模型CoGMI,它描述了一种交互技术,即协调手势(拖拽手势)和直接触摸的组合。该模型可以有效地解决以下问题:1)远距离目标到达,2)远距离目标的选择,3)目标的意外选择,4)遮挡,5)精度。
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引用次数: 1
Control strategies for robotic manipulators 机械臂的控制策略
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413422
M. Khan, Raza ul Islam, J. Iqbal
This survey is aimed at presenting the major robust control strategies for rigid robot manipulators. The techniques discussed are feedback linearization/Computed torque control, Variable structure compensator, Passivity based approach and Disturbance observer based control. The first one is based on complete dynamic model of a robot. It results in simple linear control which offers guaranteed stability. Variable structure compensator uses a switching/relay action to overcome dynamic uncertainties and disturbances. Passivity based controller make use of passive structure of a robot. If passivity of a feedback system is proved, nonlinearities and uncertainties will not affect the stability. Disturbance observer based controllers estimate disturbances, which can be cancelled out to achieve a nominal model, for which a simple controller can then be designed. This paper, after explaining each control strategy in detail, finally compares these strategies for their pros and cons. Possible solutions to cope with the drawbacks have also been presented in tabular form.
这项调查的目的是提出主要的鲁棒控制策略的刚性机器人操纵器。讨论了反馈线性化/计算转矩控制、变结构补偿器、基于无源的方法和基于扰动观测器的控制。第一种是基于机器人的完整动力学模型。它的结果是简单的线性控制,提供了保证的稳定性。变结构补偿器采用开关/继电器动作来克服动态不确定性和干扰。基于被动性的控制器利用了机器人的被动性结构。如果证明了反馈系统的无源性,则非线性和不确定性将不会影响系统的稳定性。基于扰动观测器的控制器对扰动进行估计,然后将扰动抵消,得到一个标称模型,然后设计一个简单的控制器。本文在详细解释了每种控制策略之后,最后比较了这些策略的优点和缺点。应对缺点的可能解决方案也以表格形式呈现。
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引用次数: 33
Detection of knocking in Spark Ignition (SI) engines using CMAC neural networks 基于CMAC神经网络的火花点火发动机爆震检测
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413381
K. Kamal, M. Farid, S. Mathavan
Knocking in SI (Spark Ignition) engines is one of the most addressable problems. If not detected in early stages, it causes a severe damage to an SI engine. Various techniques have been proposed so far, in order to detect early knock symptoms. This paper presents a novel approach to detect knocking using technique of Artificial Intelligence. A four stroke, single cylinder engine is simulated using GT Power engine simulation software. Data is generated through simulation for both knock and no-knock conditions. A CMAC (Cerebellar Model Articulation Controller) based neural network is then applied as an AI (Artificial Intelligence) tool to distinguish between knock and no-knock conditions. The results show a promising future for CMAC neural networks as a technique to detect knocking in SI engines.
在SI(火花点火)发动机爆震是最容易解决的问题之一。如果在早期阶段未发现,则会对SI引擎造成严重损坏。到目前为止,已经提出了各种技术,以检测早期的敲击症状。本文提出了一种利用人工智能技术进行敲击检测的新方法。利用GT Power发动机仿真软件对一台四冲程单缸发动机进行了仿真。通过模拟产生了爆震和无爆震两种情况的数据。然后将基于CMAC(小脑模型发音控制器)的神经网络作为AI(人工智能)工具应用于区分撞击和非撞击情况。结果表明,CMAC神经网络作为一种检测发动机爆震的技术具有广阔的应用前景。
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引用次数: 1
Segway electric vehicle 赛格威电动车
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413423
M. Draz, M. Shoukath Ali, M. Majeed, U. Ejaz, U. Izhar
This paper presents the design, fabrication and control of the Segway human transporter; a two-wheeled, self-balancing electric vehicle. We aim at producing a fully-operational Segway vehicle with a compact design which caters for shock absorption on rough terrains and includes an improved control system. The vehicle has a top speed of 13 km/h, a load capacity of over 2000N and a balancing time of less than 2 seconds.
介绍了赛格威载人运输车的设计、制造和控制;一种两轮自平衡电动汽车。我们的目标是生产一个全面运作的赛格威车辆与紧凑的设计,以满足在粗糙的地形上减震,包括一个改进的控制系统。该车的最高时速为13公里/小时,负载能力超过2000N,平衡时间不到2秒。
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引用次数: 17
PID control behavior and sensor filtering for a self balancing personal vehicle 自平衡小车PID控制行为及传感器滤波
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413419
M. Abdullah Bin Azhar, W. Hassan, U. Rahim
Simple self balancing vehicles require that a single physical input be sufficient for balancing as well as continuous movement. This paper discusses the control behavior of PID controller for such a vehicle named SubukRaftar which has a digital filter and controller running on an AVR microcontroller. Control variable, the tilt angle of platform, is plotted using MATLAB to study response of the controller. Response of two sensors used, gyroscope and accelerometer are also analyzed using MATLAB and possible complementary filtering solution is discussed.
简单的自平衡车辆要求一个单一的物理输入是足够的平衡以及连续运动。本文讨论了在AVR单片机上采用数字滤波器和控制器的subbukraftar车辆的PID控制器的控制行为。利用MATLAB绘制控制变量平台倾斜角,研究控制器的响应。利用MATLAB对陀螺仪和加速度计两种传感器的响应进行了分析,并讨论了可能的互补滤波方案。
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引用次数: 13
Keyboard and mouse interaction based mood measurement using artificial neural networks 基于键盘和鼠标交互的人工神经网络情绪测量
Pub Date : 2012-10-01 DOI: 10.1109/ICRAI.2012.6413378
M. S. Khan, I. Khan, M. Shafi
The study is based on an experiment to measure the affective states of computer users via their use of mouse and keyboard. The experiment was replicated from a previous study by Khan et al., [5] resulting in significant correlations between the computer users pattern of interactions and their valence, arousal ratings. This study utilized the same data set from [5] and re-confirmed its validity by training Artificial Neural Networks (ANN). The data was divided into two portions for each individual. A portion to train ANN on his/her patterns of interaction and other portion to test the ANN. The study resulted in an average recognition rate of 64.72 % for valence and 61.02 % for arousal ratings. The highest recognition rates for individual participants' valence and arousal were 100% and 87% respectively. These figures suggest that ANN is a bright prospect for the measurement of affective states of individual computer users via their interaction with keyboard and mouse.
这项研究是基于一项通过使用鼠标和键盘来测量电脑用户情感状态的实验。Khan等人先前的研究重复了该实验[5],结果显示计算机用户的交互模式与他们的效价、唤醒评级之间存在显著相关性。本研究使用了与[5]相同的数据集,并通过训练人工神经网络(Artificial Neural Networks, ANN)再次验证了其有效性。每个人的数据被分成两部分。一部分用于训练人工神经网络的交互模式,另一部分用于测试人工神经网络。研究结果表明,效价的平均识别率为64.72%,唤醒等级的平均识别率为61.02%。个体参与者对效价和觉醒的最高识别率分别为100%和87%。这些数据表明,人工神经网络通过与键盘和鼠标的互动来测量个人电脑用户的情感状态是一个光明的前景。
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引用次数: 4
期刊
2012 International Conference of Robotics and Artificial Intelligence
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