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2017 5th International Conference on Control, Instrumentation, and Automation (ICCIA)最新文献

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Interval type-2 fuzzy set application in fault detection for chemical reactor with TLBO algorithm 区间2型模糊集在TLBO算法化学反应器故障检测中的应用
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258654
M. Enjavimadar, B. Safarinejadian, M. Mozaffari
In this paper, an innovative fault detection method has been presented for nonlinear systems based on interval type-2 fuzzy model. In the proposed approach, a confidence bound has been obtained for the input-output data in the normal operating conditions of the system. The confidence bound is approximated by using a fuzzy model with interval parameters. Confident bound makes it possible to use arbitrary sets of identification input signals. Finally, a chemical reactor system has been used to demonstrate the benefits of the proposed method in fault detection applications.
本文提出了一种基于区间2型模糊模型的非线性系统故障检测方法。在该方法中,得到了系统正常运行条件下输入输出数据的置信界。采用带区间参数的模糊模型逼近置信边界。自信界使得使用任意一组识别输入信号成为可能。最后,以一个化学反应器系统为例,验证了该方法在故障检测中的应用。
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引用次数: 1
Kalman filter based sensor fault detection and identification in an electro-pump system 基于卡尔曼滤波的电泵系统传感器故障检测与识别
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258645
Monir Rezaee, Nargess Sadeghzadeh-Nokhodberiz, J. Poshtan
A successful fault detection (FD) procedure depends on correct sensory measurements which may suffer from different sensory soft faults in the form of bias, drift, scaling factor and hard faults which cannot be identified and detected in a standalone use but in combination with other sensors. Thus in this paper the problem of sensory fault detection is considered fusing sensory information. The sensory soft faults are modeled and augmented to electro-pump state space model. Nonlinear model of induction motor is linearized and a state space model for pump subsystem is developed using electrical analogy approach. Both system states and augmented sensory soft faults are then estimated employing a Kalman filter. The efficiency of the method in finally evaluated through simulation.
一个成功的故障检测(FD)程序依赖于正确的感官测量,这些测量可能会受到不同的感官软故障的影响,如偏倚、漂移、比例因子和硬故障,这些故障在单独使用时无法识别和检测,但与其他传感器结合使用时无法识别和检测。因此,本文考虑了融合传感信息的传感故障检测问题。对感应软故障进行建模,并扩充到电泵状态空间模型中。对异步电动机的非线性模型进行了线性化处理,并采用电学类比的方法建立了泵子系统的状态空间模型。然后利用卡尔曼滤波对系统状态和增强的感知软故障进行估计。最后通过仿真对该方法的有效性进行了评价。
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引用次数: 4
An experimental study of modeling and self-tuning regulator design for an electro-hydro servo-system 电液伺服系统建模与自整定调节器设计的实验研究
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258665
Anahita Moradmand, H. Khaloozadeh
To design model-based controllers for industrial systems, an accurate mathematical model is necessary. Over time, most of these models are changed and the former controllers should be modified to achieve good performance. Hydro systems, according to their wide application over last forty years, are an interesting field of research. In this paper, based on the system identification and adaptive control theory, a special scheme for modeling and controller design of an old ElectroHydro servo-system is proposed. Industrial process control suffering from noise and saturation as two main problematic factors. Here by conducting an experiment, the identification and control are employed in linear period of the nonlinear system. To specify the order of system, Matlab Ident toolbox, Hankel matrix and Hankel singular values are used. Recursive Least Square (RLS) method is implemented to determine estimated parameters. Designing a practical self-tuning regulator is a significant task too. Due to the inappropriate results of controlled system, a corrected regulator is generated. Finally, acceptable simulations are recorded and demonstrated.
为工业系统设计基于模型的控制器,需要精确的数学模型。随着时间的推移,这些模型中的大多数都发生了变化,并且应该修改以前的控制器以获得良好的性能。水电系统在过去的四十年中得到了广泛的应用,是一个有趣的研究领域。基于系统辨识和自适应控制理论,提出了一种针对老旧电液伺服系统建模和控制器设计的特殊方案。工业过程控制受到噪声和饱和两大问题的困扰。本文通过实验,将辨识与控制方法应用于非线性系统的线性周期。为了确定系统的顺序,使用了Matlab Ident工具箱、Hankel矩阵和Hankel奇异值。采用递推最小二乘(RLS)方法确定估计参数。设计一种实用的自调谐调节器也是一项重要的任务。由于被控系统的结果不合适,产生了一个修正的调节器。最后,记录并演示了可接受的仿真结果。
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引用次数: 10
An analytical eigenvalue assignment of linear time-delay systems using Lambert W function 利用Lambert W函数的线性时滞系统特征值解析分配
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258682
M. Nemati, F. Hashemzadeh, M. Baradarannia, A. Ghiasi
A new method is presented in this article to control linear time-delay systems using Lambert W function. The absence of a sufficient proof for using matrix Lambert W function in controlling time-delay systems has frustrated researchers. It is a well-established fact that unlike Lambert W Function, the matrix version still lacks the proof, which would guarantee the validity of finding the right-most eigenvalue of linear time-delay systems using this function. This paper presents a new approach in which, a system from any order is forced to use scalar Lambert W function instead of unreliable matrix version. This article studies systems with input delay and state delay respectively and for both of them, sufficient conditions for eigenvalue assignment are proposed.
本文提出了一种利用Lambert W函数控制线性时滞系统的新方法。在控制时滞系统中使用矩阵朗伯特W函数的充分证明的缺乏使研究者们感到沮丧。一个公认的事实是,与Lambert W函数不同,矩阵版本仍然缺乏证明,这将保证使用该函数寻找线性时滞系统最右特征值的有效性。本文提出了一种新的方法,将任意阶的系统强制使用标量朗伯特函数代替不可靠矩阵。本文分别研究了具有输入延迟和状态延迟的系统,并给出了这两种系统特征值分配的充分条件。
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引用次数: 1
A fault diagnosis approach for electrical induction motors via energetic based scheme 基于能量的异步电动机故障诊断方法
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258655
H. Behzad, M. Sadrnia, A. Darabi, A. Ramezani
In this paper an energetic based approach is presented for a class of Linear Parameter Varying (LPV) systems subject to sensor and component faults. The main purpose of this research is to estimate the stator winding faults of an electrical induction motor. To this end, a quasi-LPV model is derived, on the basis of the nonlinear model of induction motor. Then, an algebraic technique is addressed to derive a regressor description of the system energy balance, where the regressor coefficients are stator winding fault. This formulation provides the possibility of using the Least Square(LS) technique to component fault estimation. The effectiveness of the proposed method is illustrated in a final numerical example.
针对一类具有传感器和部件故障的线性变参数系统,提出了一种基于能量的方法。本研究的主要目的是对异步电动机定子绕组的故障进行估计。为此,在异步电机非线性模型的基础上,推导了准lpv模型。然后,利用代数方法导出了系统能量平衡的回归量描述,其中回归量系数为定子绕组故障。该公式提供了将最小二乘(LS)技术用于部件故障估计的可能性。最后的数值算例说明了该方法的有效性。
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引用次数: 1
Interleaved boost converter with reactive power control and harmonic reduction capability 具有无功功率控制和谐波抑制能力的交错升压变换器
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258697
E. Bagheri, N. Tashakor, E. Farjah, T. Ghanbari
Control capability of reactive power in a boost rectifier converter is a crucial requirement. Other existing concerns are current and output voltage ripples. In this paper, an extendable interleaved topology for high power switching rectifiers with reactive power control and reduced current ripple in input side is presented. Converter theory and developed control are expressed in detail for a six-leg structure that can be extended to any number of interleaved legs. Due to peculiar structure and control, input current is reduced which result in reducing L size in the input side. The carried out simulations in MATLAB software confirm the performance of the proposed structure and control strategy.
升压整流变流器的无功功率控制能力是一个至关重要的要求。其他存在的问题是电流和输出电压波动。针对大功率开关整流器的无功控制和输入侧电流纹波减小问题,提出了一种可扩展的交错拓扑结构。详细地阐述了可扩展到任意数目的交错腿的六腿结构的变换器理论和发展的控制。由于特殊的结构和控制,减小了输入电流,从而减小了输入侧的L尺寸。在MATLAB软件中进行的仿真验证了所提出的结构和控制策略的性能。
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引用次数: 0
Mathematically modeling of imperfect polarized laser beam in laser encoders for automotive applications 汽车用激光编码器中不完全偏振激光束的数学建模
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258651
S. Olyaee, Abdollah Gorgani Firoozjah, Ali R. Naraghi
Laser encoders can be used in robotic, control, and automation systems. In this paper, periodic nonlinear error of laser encoder resulting from imperfect polarized laser beam is mathematically analyzed and modeled by using the Jones matrix analysis for a robotic system. The photocurrents of each photodetector are mathematically obtained and simulated and the nano-displacement of scale grating is calculated by arctangent method. In addition, with the aim of compensating the periodic nonlinear error, the effect of reducing grating period of scale grating is examined. Simulation results show that there is a direct relationship between the grating period and periodic nonlinear error. Results reveal that by changing the grating period from 1 pm to 0.4 pm, the periodic nonlinear error reduces from 14.8 nm to 5.8 nm.
激光编码器可用于机器人、控制和自动化系统。本文对激光编码器的周期性非线性误差进行了数学分析,并利用机器人系统的琼斯矩阵分析方法建立了模型。对每个光电探测器的光电流进行了数学计算和模拟,并利用反正切法计算了尺度光栅的纳米位移。此外,以补偿周期性非线性误差为目的,研究了尺度光栅缩短光栅周期的效果。仿真结果表明,光栅周期与周期非线性误差之间存在直接关系。结果表明,将光栅周期从1 pm改为0.4 pm,周期非线性误差从14.8 nm减小到5.8 nm。
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引用次数: 1
Nonlinear optimal control of air handling unit via State Dependent Riccati Equation approach 基于状态相关Riccati方程的空气处理机组非线性最优控制
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258667
Fariba Bouzari Liavoli, A. Fakharian
The Air Handling Unit (AHU) is used to provide clean air in the air conditioning systems that regulate both temperature and humidity to desired values. Because of nonlinear and complex nature of coupling between the air handling system variables, an effective control system confronts many challenges. Hence using an approach that can consider all the complexities of the dynamics model in terms of control process is impossible. In this paper, the State Dependent Riccati Equation (SDRE) approach is used for nonlinear optimal control of AHU system. In the proposed method, by using pseudo-linearization and maintaining all nonlinear features of system, optimal control law is produced for both stabilization and online output tracking. In addition, for tracking reference paths, the SDRE approach would be able to control effort and minimize the energy consumption. The SDRE approach is the state feedback control method. The simulation results show good performance of the SDRE method in the tracking reference paths despite the change of equilibrium point and disturbance in comparison with LQR.
空气处理机组(AHU)用于在空调系统中提供清洁空气,将温度和湿度调节到所需值。由于空气处理系统变量之间耦合的非线性和复杂性,一个有效的控制系统面临着许多挑战。因此,从控制过程的角度考虑动力学模型的所有复杂性是不可能的。本文将状态相关Riccati方程(SDRE)方法应用于AHU系统的非线性最优控制。该方法采用伪线性化方法,保持系统的所有非线性特征,生成最优控制律,实现系统的镇定和在线输出跟踪。此外,对于跟踪参考路径,SDRE方法将能够控制工作量并最大限度地减少能耗。SDRE方法是一种状态反馈控制方法。仿真结果表明,与LQR相比,尽管平衡点和干扰发生了变化,SDRE方法在跟踪参考路径方面仍具有良好的性能。
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引用次数: 12
Multi-zone HVAC control system design using feedback linearization 多区域暖通空调控制系统的反馈线性化设计
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258687
Mariam Elnour, N. Meskin
Most buildings nowadays are equipped with Heating, Ventilation, and Air-Conditioning (HVAC) systems dedicated for processing indoor air in terms of different parameters: temperature, humidity, pressure, and quality. Recent studies show that developed countries consume up to 40% of the energy on commercial buildings and half of that is used for air-conditioning purposes, more precisely in air cooling and heating. For that, it is important to develop efficient HVAC control systems that minimize energy usage and achieve occupants' comfort. Buildings are composed of multiple interconnected zones and the simple HVAC control approach is to control zones temperatures locally based on the thermal loads of individual zones. However, it is realistic to account for the thermal interaction between the zones in the controller design to analyze the extent of its effects on the HVAC control system. This paper discusses the design of two-zone HVAC control system using feedback linearization considering the presence of zones interaction. The zones interaction is modeled using physics and thermodynamics laws. The effect of the interaction on control effort and tracking error is analyzed using simulation results.
如今,大多数建筑物都配备了供暖、通风和空调(HVAC)系统,专门用于处理室内空气的不同参数:温度、湿度、压力和质量。最近的研究表明,发达国家商业建筑消耗的能源高达40%,其中一半用于空调,更准确地说,用于空气制冷和供暖。为此,重要的是开发高效的暖通空调控制系统,以最大限度地减少能源使用并实现居住者的舒适。建筑物由多个相互连接的区域组成,简单的暖通空调控制方法是根据各个区域的热负荷局部控制区域温度。然而,在控制器设计中考虑区域之间的热相互作用来分析其对暖通空调控制系统的影响程度是现实的。本文讨论了考虑区域相互作用的两区暖通空调控制系统的反馈线性化设计。利用物理和热力学定律对区域相互作用进行了建模。利用仿真结果分析了相互作用对控制力和跟踪误差的影响。
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引用次数: 12
Radial basis function neural network-based control for uncertain nonlinear systems with unknown dead-zone input 具有未知死区输入的不确定非线性系统的径向基函数神经网络控制
Pub Date : 2017-11-01 DOI: 10.1109/ICCIAUTOM.2017.8258644
M. Shahriari-kahkeshi
In this work, an adaptive dynamic surface control scheme is studied for a class of nonlinear systems with unknown functions and unknown non-symmetric dead-zone nonlinearity. The unknown asymmetric dead-zone is described as a combination of a linear term and a disturbance-like term. Radial basis function neural networks (RBFNNs) are used in the online approximation of unknown functions and disturbance-like term of the dead-zone model and adaptive laws are designed to adjust the weights of network. Using the RBFNN-based model, the dead-zone model and the dynamic surface control (DSC) technique, the adaptive control scheme is developed for uncertain nonlinear systems with dead-zone nonlinearity. The proposed scheme eliminates the ‘explosion of complexity’ problem and presents a singular-free adaptive DSC control scheme. Also, it does not require any knowledge about unknown terms and the dead-zone nonlinearity. Simulation results are provided to demonstrate the performance and effectiveness of the proposed approach.
针对一类具有未知函数和未知非对称死区非线性的非线性系统,研究了一种自适应动态曲面控制方案。未知的非对称死区被描述为线性项和类扰动项的组合。将径向基函数神经网络(RBFNNs)用于未知函数的在线逼近和死区模型的类扰动项,并设计自适应律来调整网络的权值。利用基于rbfnn的模型、死区模型和动态面控制(DSC)技术,提出了具有死区非线性的不确定非线性系统的自适应控制方案。该方案消除了“复杂性爆炸”问题,提出了一种无奇异的自适应DSC控制方案。此外,它不需要任何关于未知项和死区非线性的知识。仿真结果验证了该方法的性能和有效性。
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引用次数: 0
期刊
2017 5th International Conference on Control, Instrumentation, and Automation (ICCIA)
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