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An On-Line Monitoring and Warning System of Multi-Rotor VAV 多转子变风量在线监测预警系统
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688857
Z. Jian, Yuan-Hang Wang, Linghui Meng, Xiaojian Ding, Jian-Feng Yang, Xiaobing Li
The flight safety of UAV has posed a serious threat to public security. The abnormality of any component may cause the whole rotorcraft out of control even crash. To detect even control the potential failure of UAV, it makes great sense to trace the real-time status of UAV. This paper addresses the issue of the online monitoring and alarm system for multi-rotor UAV. The framework of the system, design of the acquisition board and method for data collection are specifically discussed. Also, the system prototype for airborne is developed based on DSP+FPGA platform. Experimental results show that the system can effectively realize the online status monitoring of multi-rotor UAV.
无人机的飞行安全已对公共安全构成严重威胁。任何一个部件的异常都可能导致整个旋翼机失去控制甚至坠毁。为了检测甚至控制无人机的潜在故障,对无人机进行实时状态跟踪具有重要意义。本文研究了多旋翼无人机在线监测报警系统。详细讨论了系统的结构、采集板的设计和数据采集方法。同时,基于DSP+FPGA平台开发了机载系统原型。实验结果表明,该系统能有效地实现多旋翼无人机的在线状态监测。
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引用次数: 0
Proceedings 2018 3rd International Conference on System Reliability and Safety ICSRS 2018 2018第三届系统可靠性与安全性国际会议论文集
Pub Date : 2018-11-01 DOI: 10.1109/icsrs.2018.8688855
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引用次数: 0
Metaheuristic Bio-Inspired Algorithms for Prognostics: Application to on-Board Electromechanical Actuators 预测的元启发式生物启发算法:在车载机电执行器上的应用
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688832
M. D. Vedova, P. Berri, Stefano Re
Metaheuristic bio inspired algorithms are a wide class of optimization algorithms, which recently saw a significant growth due to its effectiveness for the solution of complex problems. In this preliminary work, we assess the performance of two of these algorithms - Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) - for the prognostic analysis of an electro-mechanical flight control actuator, powered by a Brushless DC (BLDC) trapezoidal motor. We focus on the first step of the prognostic process, consisting in an early Fault Detection and Identification (FDI); our model-based strategy consists in using an optimization algorithm to approximate the output of the physical system with a computationally light Monitor Model.
元启发式生物启发算法是一类广泛的优化算法,由于其解决复杂问题的有效性,最近看到了显着的增长。在这项初步工作中,我们评估了其中两种算法的性能-遗传算法(GA)和粒子群优化(PSO) -用于无刷直流(BLDC)梯形电机驱动的机电飞行控制执行器的预测分析。我们专注于预测过程的第一步,包括早期故障检测和识别(FDI);我们基于模型的策略包括使用优化算法来近似物理系统的输出与计算光监测模型。
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引用次数: 2
Selective Maintenance Modeling for a Multi-State System Considering Human Reliability 考虑人的可靠性的多状态系统选择维护建模
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688871
Zhonghao Zhao, Xiaoyuan Yan, B. Xiao, Xiaotong Sun
In an actual industrial environment, many systems need to perform multiple missions in succession. In order to ensure the success of next mission, the components require maintenance in maintenance breaks. In this case, there may not be enough time and cost to repair every component. Therefore, selective maintenance is required between two consecutive missions. In a multi-state system, each component also has multiple working states, which makes many maintenance options during maintenance break possible. But different maintenance workers will affect the states of components after maintenance. The purpose of this paper is to calculate the human error rate for maintenance of multi-state systems and give the reliability of performing next mission. For the selective maintenance of multi-state systems considering human reliability, with constraints of maintenance time and cost, an optimization model with the goal of maximum system reliability is presented, and the optimal selective maintenance strategy is given by genetic algorithm (GA). Finally, an example is presented to illustrate the effect of human reliability on the final maintenance strategy.
在实际的工业环境中,许多系统需要连续执行多个任务。为了确保下一次任务的成功,这些部件需要在维修间隙进行维护。在这种情况下,可能没有足够的时间和成本来修复每个组件。因此,需要在两次连续任务之间进行选择性维护。在多状态系统中,每个部件也具有多种工作状态,这使得在维修中断期间有多种维护选择成为可能。但不同的维修人员会影响维修后部件的状态。本文的目的是计算多状态系统维护的人为错误率,并给出执行下一个任务的可靠性。针对考虑人的可靠性的多状态系统在维修时间和费用约束下的选择性维修问题,建立了以系统可靠性最大化为目标的优化模型,并利用遗传算法给出了最优的选择性维修策略。最后,通过实例说明了人为可靠性对最终维修策略的影响。
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引用次数: 5
A Communication Reliability Evaluation System for Coast Radio Station Using AHP 基于层次分析法的海岸无线电台通信可靠性评估系统
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688852
Jian Liu, Qing Liu, Haokun Lei, Peng Tao, Tianxi Liang
Coast radio station plays an important role in ensuring the safety of navigation of ships at sea, but there is little research on the evaluation of its communication as a system. Especially, the regularity of equipment renewal time of coast radio station is not strong, and the possibility of equipment failure is quite different, which brings great challenge to the evaluation of overall operational reliability of coast radio station. This study attempts to identify the factors that can be quantified to establish a communication reliability evaluation model for coast radio station from the perspective of experience of its operation. Sixty-two factors were selected mainly considering the working experience of experts, managers and workers. These were categorized into four types factors: service quality, equipment state, human resources and external evaluation. the analytical hierarchical process (AHP) methodology was used for estimating and ranking the factors. The results show that the two most important categories are equipment state and business quality.
海岸无线电台在保障海上船舶航行安全方面发挥着重要作用,但对其作为一个系统进行通信评价的研究却很少。特别是海岸无线电台设备更新时间的规律性不强,设备故障的可能性差异较大,这给海岸无线电台整体运行可靠性的评估带来了很大的挑战。本研究试图从海岸无线电台运行经验的角度,找出可量化的因素,建立海岸无线电台通信可靠性评估模型。选择了62个因素,主要考虑专家、管理者和工人的工作经验。这些因素被分为四类:服务质量、设备状态、人力资源和外部评价。采用层次分析法(AHP)对影响因素进行评价和排序。结果表明,最重要的两个类别是设备状态和业务质量。
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引用次数: 0
Using Phenomenology to Assess Risk Perception of a New Technology in Public Transportation the Case of the Autonomous Vehicles as Mobility as a Service (MaaS) in Switzerland 使用现象学来评估公共交通新技术的风险感知——以瑞士的自动驾驶汽车作为移动即服务(MaaS)为例
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688840
Randolf Ramseyer, Francesco Cimmino, Lionel Emery, Sandra Grèzes, Vincent Grèzes, Benjamin Nanchen, Emilie Simon, E. Fragnière
In the mobility sector, a large number of new technologies such as autonomous vehicles (AVs) and services (e.g. carpooling) are emerging. AVs involve not only passengers, but also authorities, manufacturers, public transportation companies, law enforcement officials, drivers, pedestrians and shopkeepers. Applying phenomenology - the description of a phenomenon's live experience [1] - to this case of Mobility as a Service (MaaS) contributes to understanding its complexity and provides insights of users' perception of risk related to the AVs. This new technology brings many opportunities to improve our mobility system. Identified potential risks can affect the efficiency and the perception of the service. In this exploratory research, we have employed a technique called experimental phenomenology to identify these risks. The major advantage of this approach is to take into account the perception of passengers as a driver for design.
在移动出行领域,大量新技术如自动驾驶汽车(AVs)和服务(如拼车)正在兴起。自动驾驶汽车不仅涉及乘客,还涉及当局、制造商、公共交通公司、执法人员、司机、行人和店主。将现象学——对一种现象的现场体验的描述——应用到这个移动即服务(MaaS)的案例中,有助于理解其复杂性,并提供用户对自动驾驶汽车相关风险感知的见解。这项新技术为改善我们的移动系统带来了许多机会。已识别的潜在风险会影响服务的效率和感知。在这项探索性研究中,我们采用了一种称为实验现象学的技术来识别这些风险。这种方法的主要优点是将乘客的感知作为设计的驱动因素。
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引用次数: 3
Particle Swarm Optimization Technique for Shunt Active Power Filter 并联有源电力滤波器的粒子群优化技术
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688856
A. N. El-deen, A. Elbaset, Meshari D. Alanazi, A. Alaboudy, H. Ziedan
This paper is aimed to design and study the performance of shunt active power filter based on Particle Swarm Optimization Technique (PSO) which is used to find out the optimal gains of PI controllers. PSO technique is designed to control the position and velocity of updating particles till reaches the optimum set. Modified synchronous reference frame theory is implemented to excerpt the reference current waveform. Intensive simulations are conducted based on Matlab/Simulation Tool. Design of shunt active power filter is agree with the proposed results. Optimal control circuit is quite superior as it is more effective even with the presence of non-linear loads and has a reasonably better dynamic response.
本文旨在设计和研究基于粒子群优化技术(PSO)的并联有源电力滤波器的性能,该技术用于寻找PI控制器的最优增益。粒子群算法旨在控制更新粒子的位置和速度,直到达到最优集合。采用改进的同步参考系理论提取参考电流波形。基于Matlab/Simulation Tool进行了密集的仿真。并联型有源电力滤波器的设计与所提出的结果一致。最优控制电路的优点在于,即使在非线性负载存在的情况下也更有效,并且具有较好的动态响应。
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引用次数: 2
Prognostics of Non-Markovian Degradation Processes with Fractal Property and Measurement Uncertainty 具有分形特性和测量不确定度的非马尔可夫退化过程的预测
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688872
Xiaopeng Xi, Donghua Zhou, Maoyin Chen
Non-Markovian stochastic degradation processes exist extensively in the practical industrial systems. For instance, a blast furnace should be operated continuously subject to harsh conditions of high temperature, sulfuration, and nitration, resulting in biased random walks among the degrading performance variables. This phenomenon can be well interpreted as the memory effects, which implies the future states may rely on each of the past ones. The other tough issue is that the degradation processes would be contaminated with measurement noises from unidentified sources. Large level of measurement uncertainty seems adverse to the accurate extraction of non-Markovian diffusions, and hence impacts the prognostics of the system. To overcome these difficulties, we mainly present a remaining useful life (RUL) prediction method on the framework of a state space model incorporating both the fractional Brownian motion (FBM) and the Gaussian noise. Attributing to the fractal property of longterm dependency, FBM naturally adapts to the non-Markovian degradation modeling. Considering the nonlinearity, a variant form of sigmoid function is also adopted as the fixed drift item. The hidden states and the unknown parameters are estimated synchronously using a composite identification algorithm, while the RUL distributions are derived by a Monte Carlo method. A simulation example further verifies the validity of the proposed prognostics scheme.
非马尔可夫随机退化过程广泛存在于实际工业系统中。例如,高炉应在高温、硫化、硝化等恶劣条件下连续运行,导致性能退化变量之间存在有偏随机游走。这种现象可以很好地解释为记忆效应,这意味着未来的状态可能依赖于过去的每一个状态。另一个棘手的问题是,退化过程将受到来自不明来源的测量噪声的污染。大的测量不确定度似乎不利于非马尔可夫扩散的准确提取,从而影响系统的预测。为了克服这些困难,我们主要提出了一种结合分数阶布朗运动(FBM)和高斯噪声的状态空间模型框架的剩余使用寿命(RUL)预测方法。由于长期依赖的分形特性,FBM自然地适应于非马尔可夫退化建模。考虑到非线性,还采用了一种变型的s型函数作为固定漂移项。采用复合辨识算法对隐状态和未知参数进行同步估计,同时采用蒙特卡罗方法推导了RUL分布。仿真算例进一步验证了所提预测方案的有效性。
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引用次数: 1
Design for Reliability with Early Design Approach 基于早期设计方法的可靠性设计
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688880
Rafi M. Saied, S. Thouta
With increasing demand of IoT device and Autonomous driving technology, the need for high performance designs to perform reliably under extreme conditions has become an absolute necessity. In addition to the harsh conditions, the devices must be able to work at high speeds to meet the performance demands. This means the hardware must work in very high temperatures and harsh environmental conditions quickly and reliably. This causes increasing challenges in Reliability verification of hardware designs to ensure the machine is both robust and reliable. There are various reliability aspects such as latch-up, electrostatic discharge (ESD), hot carrier effects and electromigration that are observed in IC design. Several factors impact the reliability verification of design such as process technology used, library design, routing, frequency, voltage and the usage conditions. In order to model all of this correctly, Sign off RV is run in final stages of design when all the layout and design collaterals have stabilized and this effort spent on fixing RV has an impact on Time to Market. In this paper we mainly show how some of the electromigration challenges can be addressed in design early on through correct by construction approach.
随着物联网设备和自动驾驶技术的需求不断增加,对在极端条件下可靠运行的高性能设计的需求已经成为绝对必要的。除了恶劣的条件,设备必须能够在高速下工作,以满足性能要求。这意味着硬件必须在非常高的温度和恶劣的环境条件下快速可靠地工作。这给硬件设计的可靠性验证带来了越来越大的挑战,以确保机器既坚固又可靠。在集成电路设计中,存在各种可靠性方面,如锁存、静电放电(ESD)、热载子效应和电迁移。影响设计可靠性验证的因素有工艺技术、库设计、布线、频率、电压和使用条件等。为了正确建模所有这些内容,Sign off RV在设计的最后阶段运行,此时所有布局和设计附属品都已稳定,并且用于修复RV的工作对上市时间有影响。在本文中,我们主要展示了如何通过正确的施工方法在设计早期解决一些电迁移挑战。
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引用次数: 1
Comparison and Analysis of Building Fire Risk Assessment Methods 建筑火灾风险评估方法的比较与分析
Pub Date : 2018-11-01 DOI: 10.1109/ICSRS.2018.8688723
Lizhi Wu, Shigang Guo
With the rapid development of the global economy, the building fire prevention design must transform from the traditional “prescription” design to the scientific safety engineering design at the technical level, and the core of the transformation is fire risk assessment. In this paper, various building fire risk assessment methods were divided into three categories: qualitative methods, semi-quantitative methods and quantitative methods. By comparing different methods from the sphere of application, considerations, representation of results, subjectivity of results, advantages, disadvantages and so on. Finally, the conclusion of how to choose the building fire risk assessment method and next research orientation can be drawn.
随着全球经济的快速发展,建筑防火设计在技术层面上必须从传统的“处方式”设计向科学的安全工程设计转变,而这种转变的核心是火灾风险评估。本文将各种建筑火灾风险评估方法分为定性方法、半定量方法和定量方法三大类。从适用范围、考虑因素、结果表现形式、结果主观性、优缺点等方面对不同方法进行了比较。最后,对建筑火灾风险评估方法的选择和下一步的研究方向进行了总结。
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引用次数: 0
期刊
2018 3rd International Conference on System Reliability and Safety (ICSRS)
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