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Controlling Biodiversity Data in the Agricultural Gene Bank Using Service-Oriented Architecture 利用面向服务的体系结构控制农业基因库中的生物多样性数据
Q1 Mathematics Pub Date : 2021-01-31 DOI: 10.15866/IREACO.V14I1.18710
Endo Kristiyono, A. S. Girsang
Indonesia is one of the world’s richest nations in biodiversity. Genetic resources management features a wide range of activities involving various agencies and organizations. Nowadays, data and information on genetic and biodiversity resources are still unintegrated between agencies and institutions. This causes a situation called information silo, which leads to management information systems being ineffective and inefficient. In order to overcome this problem, a flexible, interoperable architecture control is needed. Service-Oriented Architecture (SOA) is an appropriate approach to control distributed and heterogeneous systems to integrate genetic resources data and information systems at the Indonesian Agency for Agricultural Research and Development (IAARD). The SOA system is built by the SOMA method, which consists of some methods. The results show that the new system runs well and it is more effective and efficient than the previous one.
印度尼西亚是世界上生物多样性最丰富的国家之一。遗传资源管理的特点是涉及各种机构和组织的广泛活动。如今,有关遗传和生物多样性资源的数据和信息仍然没有在各机构和机构之间进行整合。这导致了一种称为信息筒仓的情况,导致管理信息系统效率低下。为了克服这个问题,需要一个灵活的、可互操作的体系结构控制。面向服务的体系结构(SOA)是控制分布式和异构系统的合适方法,以集成印尼农业研究与发展局(IAARD)的遗传资源数据和信息系统。SOA系统是通过SOMA方法构建的,该方法由一些方法组成。结果表明,新系统运行良好,比以前的系统更有效。
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引用次数: 0
Intelligent Control Strategies for Three Degree of Freedom Active Suspension System 三自由度主动悬架系统的智能控制策略
Q1 Mathematics Pub Date : 2021-01-31 DOI: 10.15866/IREACO.V14I1.20057
A. Bataineh, Wafa Batayneh, M. Okour
Suspension system plays a major role in both comfort and stability of a vehicle. This paper presents modeling and controlling for a 3 Degree of Freedom (DOF) active suspension system. Four controllers are designed to control the response of the active suspension system, namely PID, LQR, Fuzzy Logic Controller (FLC) and Artificial Neural Network (ANN). The response for both the active suspension system and the passive suspension system is compared. For passive suspension system, it has been found out that it is hard to improve both passenger comfort and road handling at the same time, because of the fixed parameters that cannot be changed during the work. On the other hand, in active suspension system, both ride comfort and road handling can be improved. This work has showed that ANN, FLC, LQR, and PID controllers can be used with an active suspension system in order to improve the performance, the stability, and the ride comfortability compared to the passive suspension system. All these controllers are simulated using MATLAB and Simulink. Different road profiles are used to test the active suspension system response, such as a step input of 0.1 m, and a sinewave of amplitude of 0.3m and a frequency of 0.318Hz. All the controllers show better response compared to passive suspension system. A compromise can be done to choose the controller depending on the desired states.
悬架系统对车辆的舒适性和稳定性起着重要作用。本文介绍了一种三自由度主动悬架系统的建模与控制。设计了四个控制器来控制主动悬架系统的响应,即PID、LQR、模糊逻辑控制器和人工神经网络。比较了主动悬架系统和被动悬架系统的响应。对于被动悬架系统,由于工作过程中参数固定,无法改变,因此很难同时提高乘客舒适性和道路操纵性。另一方面,在主动悬架系统中,可以提高乘坐舒适性和道路操控性。这项工作表明,与被动悬架系统相比,ANN、FLC、LQR和PID控制器可以用于主动悬架系统,以提高性能、稳定性和乘坐舒适性。所有这些控制器都使用MATLAB和Simulink进行了仿真。使用不同的道路剖面来测试主动悬架系统的响应,例如0.1m的阶跃输入、0.3m的正弦波和0.318Hz的频率。与被动悬架系统相比,所有控制器都显示出更好的响应。可以根据期望的状态来选择控制器。
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引用次数: 0
Failure Analysis Methodology in Industrial Control Valves Using Quality Function 基于质量函数的工业控制阀故障分析方法
Q1 Mathematics Pub Date : 2020-11-30 DOI: 10.15866/IREACO.V13I6.19331
J. Cárdenas, Edwin Espinel, J. P. Rojas
Quality control methodologies and improvement methods have been applied to the process management in order to develop a set of fault diagnosis practices during the industrial operation of mechanical components in production lines. These practices are based on the reliability concept, which defines the failure probability due to the building or design processes and maintenance activities. In this sense, a quality methodology may be considered a powerful tool employed to determine the main causes of the recurring failure events associated with the downtime cost and the material losses during the industrial production. A quality function development may be conformed by four main phases: scheme design, components definition, engineering and quality control, and manufacturing work order. Taking into account the above, this paper proposes a quality function deployment method in order to define the appropriate control parameters, which define the needs of the specific production processes related to the functionality of the mechanical devices or the minimal requirements where inspection, test specifications, and failure diagnosis are developed. In this sense, this paper purposes a quality function development methodology in order to analyze the failure analysis of the pressure–control valve implemented in a hydraulic system to verify the possible causes of non-conformity and to define a set of alternatives that improve the production process. This decision-making problem has been based on two steps: strategic and operational terms, where each point has been resolved to define a successful development of this quality control methodology. The qualitative assessment of this particular study identifies a containment loss of the pressure-control valve used to maintain the reactor oil level in the hydraulic system.
质量控制方法和改进方法已应用于过程管理,以便在生产线机械部件的工业操作过程中制定一套故障诊断实践。这些实践基于可靠性概念,该概念定义了由于建筑或设计过程和维护活动造成的故障概率。从这个意义上说,质量方法论可以被认为是一种强大的工具,用于确定与工业生产期间的停机成本和材料损失相关的重复故障事件的主要原因。质量功能开发可分为四个主要阶段:方案设计、组件定义、工程和质量控制以及制造工单。考虑到上述情况,本文提出了一种质量功能部署方法,以定义适当的控制参数,这些参数定义了与机械设备功能相关的特定生产过程的需求,或制定检查、测试规范和故障诊断的最低要求。从这个意义上说,本文旨在采用质量函数开发方法来分析液压系统中执行的压力控制阀的故障分析,以验证不合格的可能原因,并确定一套改进生产流程的替代方案。这个决策问题基于两个步骤:战略和操作术语,其中每一点都得到了解决,以确定这种质量控制方法的成功发展。该特定研究的定性评估确定了用于维持液压系统中反应堆油位的压力控制阀的安全壳损失。
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引用次数: 0
Adaptive Hybrid Force/Position Control Using Neuro-Adaptive Observer for Dual-Arm Robot 基于神经自适应观测器的双臂机器人力/位置混合自适应控制
Q1 Mathematics Pub Date : 2020-11-30 DOI: 10.15866/IREACO.V13I6.20017
Luu Thi Hue, Nguyễn Phạm Thục Anh, D. M. Duc
The paper has developed an adaptive hybrid force/position control scheme using neural network observer for controlling dual-arm robotic system considering system uncertainties. Firstly, an overall dynamics of the system including the manipulators and the object are derived using Euler-Lagrangian principle. Then, a neural-adaptive observer is designed to estimate the object velocities using a radial basis neural network. Based on the observed velocities, an adaptive hybrid force/position controller is proposed to compensate dynamic uncertainties without force measurement. The neuro-adaptive observer and the controller learning algorithms have been derived according to Lyapunov stability principle in order to guarantee asymptotical convergence of the closed loop system. Finally, simulation work has been carried out to validate the accuracy and the effectiveness of the proposed approach.
针对双臂机器人系统的不确定性,提出了一种基于神经网络观测器的自适应力/位置混合控制方案。首先,利用欧拉-拉格朗日原理推导了包括机械手和物体在内的系统整体动力学。然后,设计了一个神经自适应观测器,利用径向基神经网络估计目标速度。基于观测到的速度,提出了一种自适应力/位置混合控制器来补偿不需要力测量的动态不确定性。为了保证闭环系统的渐近收敛,根据李雅普诺夫稳定性原理推导了神经自适应观测器和控制器的学习算法。最后,通过仿真验证了所提方法的准确性和有效性。
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引用次数: 1
Traffic Forecast Based on Statistical Data for Public Transport Optimization in Real Time 基于统计数据的交通预测用于公共交通实时优化
Q1 Mathematics Pub Date : 2020-11-30 DOI: 10.15866/IREACO.V13I6.19440
L. Obolenskaya, E. Moreva, T. Sakulyeva, V. Druzyanova
The intellectualization of transportation system is a relevant task for solving traffic-related problems such as vehicle traffic management and modern transport system improvement. The purpose of this work was to design a competitive pathway for real transport system to optimize the route planning. Modeling of the transport system refers to the problem of finding the K-shortest sustainable pathway in a multimodal network. The solution to this problem was fulfilled by applying a hybrid algorithm of an ant colony based on a differential evolution approach to the pheromone renewal and the division of the colony into teams. Experimental results showed that an advanced ants colony algorithm is highly efficient even with quite a small population of the colony. The obtained results were compared with those of the conventional ant colony algorithm. Due to its high efficiency, the elaborated method is applicable in improving the quality of the entire road network, especially in congestions and traffic jams, taking into account real-time traffic information.
交通系统智能化是解决车辆交通管理、完善现代交通系统等交通相关问题的相关课题。本研究的目的是为实际交通系统设计一条竞争路径,以优化路线规划。运输系统的建模是指在多式联运网络中寻找k最短可持续路径的问题。将基于差分进化方法的蚁群混合算法应用于信息素更新和群体划分,实现了这一问题的解决。实验结果表明,一种先进的蚁群算法即使在很小的种群数量下也具有很高的效率。将所得结果与传统蚁群算法进行了比较。由于该方法效率高,在考虑实时交通信息的情况下,适用于提高整个路网的质量,特别是在拥堵和交通堵塞的情况下。
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引用次数: 10
Fuzzy Adaptive PID Control of a Shell and Tube Heat Exchanger Output Temperature 管壳式换热器输出温度的模糊自适应PID控制
Q1 Mathematics Pub Date : 2020-11-30 DOI: 10.15866/IREACO.V13I6.19148
G. Prada, J. P. Rojas, G. Romero
This paper presents the design and the performance comparison of a classic PID controller, a feedforward PID controller, and a fuzzy PID controller. These controllers have been implemented to control the outlet temperature of a shell and tube heat exchanger. The controller with feedforward is proposed to provide assistance in the closed-loop control, in order to reduce the disturbances that affect the system. This method is compared with the fuzzy one, which is based on the concepts of artificial intelligence, genetic algorithm, neural networks, and fuzzy logic. For this controller, Gaussian membership functions have been established, a universe of discourse ranging from -6 to 6 for the error and its derivative, and a universe of discourse ranging from -0.5 to 0.5 for the control variables. From the results of this study, it has been concluded that the tracking error in the output temperature under the variation of the set-point decreases in a faster way in the PID with feedforward respect to the classical PID. However, the fuzzy adaptive PID control is based on the optimized parameters.
本文介绍了经典PID控制器、前馈PID控制器和模糊PID控制器的设计和性能比较。这些控制器已被用于控制壳管式换热器的出口温度。提出了带前馈的控制器辅助闭环控制,以减少影响系统的干扰。该方法与基于人工智能、遗传算法、神经网络和模糊逻辑等概念的模糊方法进行了比较。对于该控制器,建立了高斯隶属函数,误差及其导数的范围为-6至6,控制变量的范围为-0.5至0.5。从研究结果可以看出,相对于经典PID,具有前馈的PID在设定点变化下,输出温度的跟踪误差减小得更快。而模糊自适应PID控制是基于优化后的参数。
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引用次数: 0
A New Multimodel Representation of Fractional-Order Systems in Both Time and Frequency Domains 分数阶系统在时间和频率域的一种新的多模型表示
Q1 Mathematics Pub Date : 2020-11-30 DOI: 10.15866/IREACO.V13I6.17354
Abdennacer Ben Messaoud, S. Talmoudi, M. Ksouri
In order to deal with some difficult problems in fractional-order systems, like high computational load of fractional-order operator, fractional-order transfer function is commonly approximated by an integer order model. However, the dimension of this model increases with its accuracy, which can make the design of a controller more difficult. In this paper, a new approach for modelling of fractional-order systems is investigated. Exploiting the multimodel technique, the suggested method replaces the unique fractional-order model by a set of simpler integer order models. The determination of the different models is based on an approximation of the fractional-order derivative operator sα. Then the global model is obtained through a fusion of the simple models weighted by their respective relevance degrees calculated by optimizing a constrained least squares problem. The resulting final model can represent adequately the fractional-order systems both in time and in frequency domains. Simulations and comparative studies carried out on academic examples indicate the interest, the clarity and the improvement in accuracy in both time and frequency domains of the proposed modelling method, compared to modelling by a single model based on the approximation of Oustaloup.
为了解决分数阶系统中的一些难题,如分数阶算子的计算量大,分数阶传递函数通常用整数阶模型来近似。然而,该模型的尺寸随着其精度的增加而增加,这会使控制器的设计变得更加困难。本文研究了一种新的分数阶系统建模方法。该方法利用多模型技术,用一组更简单的整数阶模型代替了唯一的分数阶模型。不同模型的确定是基于分数阶导数算子sα的近似。然后,通过对通过优化约束最小二乘问题计算出的简单模型各自的相关度进行加权的融合来获得全局模型。所得到的最终模型可以在时域和频域中充分地表示分数阶系统。对学术实例进行的模拟和比较研究表明,与基于Oustaloup近似值的单个模型建模相比,所提出的建模方法在时域和频域上都很有趣、清晰且准确性有所提高。
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引用次数: 0
Bidirectional Control of Electric Vehicles Based on Artificial Neural Network Considering Owners Convenience and Microgrid Stability 考虑车主便利性和微电网稳定性的基于人工神经网络的电动汽车双向控制
Q1 Mathematics Pub Date : 2020-11-30 DOI: 10.15866/IREACO.V13I6.19841
Mahmoud Essam M. Harby, Helmy Elzoghby, S. Elmasry, A. Elsamahy
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引用次数: 2
Multi-Objective Model Predictive Control for Vehicle Active Suspension System 车辆主动悬架系统的多目标模型预测控制
Q1 Mathematics Pub Date : 2020-09-30 DOI: 10.15866/ireaco.v13i5.19212
Joshua Sunder David Reddipogu, Vinodh Kumar Elumalai
This paper puts forward a multi-objective model predictive control scheme in order to address the conflicting control objectives of a vehicle active suspension system. The key problem in designing an active suspension controller is that the controller has to realize a feasible control input that can satisfy the competing control requirements such as ride comfort, suspension travel and road handling. Hence, in this work, these constraints are integrated into an optimal control framework and a finite horizon model predictive controller is used to solve the multi-objective cost function. The key advantage of the proposed scheme is that the model predictive control design finds the optimal control input by solving the discrete time algebraic Riccati equation. This guarantees not only a robust closed loop system but also a realizable control effort, without violating the hard constraints of the active suspension system. The proposed model predictive control design is experimentally validated on a laboratory scale quarter car suspension system using hardware-in-loop testing. The performance of the model predictive control scheme is compared with the one of the unconstrained linear quadratic regulator and tested for four realistic road profiles. The experimental results substantiate that the suspension system controlled by the model predictive controller offers better ride comfort and road handling features when compared to the conventional linear quadratic regulator.
针对车辆主动悬架系统控制目标冲突的问题,提出了一种多目标模型预测控制方案。主动悬架控制器设计的关键问题是控制器必须实现一个可行的控制输入,以满足平顺性、悬架行程和道路操控等相互竞争的控制要求。因此,本文将这些约束整合到一个最优控制框架中,并使用有限水平模型预测控制器求解多目标成本函数。该方案的主要优点是模型预测控制设计通过求解离散时间代数Riccati方程找到最优控制输入。这不仅保证了一个鲁棒的闭环系统,而且还保证了一个可实现的控制努力,而不违反主动悬架系统的硬约束。通过硬件在环测试,在实验室规模的四分之一汽车悬架系统上验证了所提出的模型预测控制设计。将模型预测控制方案与无约束线性二次型调节器的性能进行了比较,并对四种实际道路轮廓进行了测试。实验结果表明,与传统的线性二次型调节器相比,模型预测控制器控制的悬架系统具有更好的平顺性和道路操控性。
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引用次数: 1
Microgrid Frequency Stability Enhancement Through Controlling Electric Vehicles Batteries Based on Fuzzy Logic Controller 基于模糊控制器控制电动汽车电池提高微电网频率稳定性
Q1 Mathematics Pub Date : 2020-09-30 DOI: 10.15866/ireaco.v13i5.19379
Mahmoud Essam M. Harby, Helmy Elzoghby, S. Elmasry, A. A. El-Samahy
The large-scale renewable energy contribution tends to expand vastly; this is due to the numerous benefits of the renewable energy from the environmental and economic aspects. From another hand, renewable resources are intermittent and changeable in nature, which would affect the microgrid frequency stability. In this paper, a fully renewable and green microgrid is proposed aiming to zero emission power generation, the microgrid consists of Biogas plant, Biodiesel plant, Photovoltaic system, Wind turbines, Battery Energy Storage System and Electric Vehicles. The main contribution of this paper is providing the frequency stability enhancement of the microgrid through controlling the charging and discharging of the electric vehicles batteries using fuzzy logic controller based on three main factors, the electric vehicle battery state of charge, the microgrid frequency deviation signal and the departure time of the vehicle, which is set in advance by the owner. The enhancement of the frequency is performed without using extra storage system. This work is providing two main scenarios for the frequency stability enhancement, the first one is through controlling only the charging of the electric vehicles batteries and the second one is done through controlling the charging and discharging of the electric vehicles batteries as going to be presented a head.
大规模可再生能源的贡献有大幅扩大的趋势;这是由于可再生能源从环境和经济方面的众多好处。另一方面,可再生资源具有间歇性和多变性,会影响微电网频率的稳定性。本文以零排放发电为目标,提出了一个完全可再生的绿色微电网,该微电网由沼气厂、生物柴油厂、光伏系统、风力发电机组、电池储能系统和电动汽车组成。本文的主要贡献是基于车主预先设定的电动汽车电池充电状态、微电网频率偏差信号和车辆出发时间三个主要因素,利用模糊控制器控制电动汽车电池的充放电,从而增强微电网的频率稳定性。在不使用额外存储系统的情况下进行频率增强。本研究提供了两种主要的频率稳定性增强方案,第一种方案是通过仅控制电动汽车电池的充电,第二种方案是通过控制电动汽车电池的充放电来实现。
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引用次数: 1
期刊
International Review of Automatic Control
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