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2014 International Conference on Mechatronics and Control (ICMC)最新文献

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Attitude controller designed based on pole assignment theory for combined spacecraft 基于极点配置理论的组合航天器姿态控制器设计
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231794
Yan-ru Qin, Feng Wang, Xibin Cao
This paper investigates the attitude control problem of on-orbit servicing spacecraft which changes moment of inertia after the rendezvous and docking task. Considering in the small-angle circumstance and manipulating attitude dynamics model with linearization method, the attitude controller based on pole assignment is obtained. Finally, a numerical example is provided to illustrate the effectiveness of the proposed approach.
研究了在轨服务航天器交会对接后转动惯量变化的姿态控制问题。考虑小角度环境,采用线性化方法控制姿态动力学模型,得到了基于极点配置的姿态控制器。最后,给出了一个数值算例来说明所提方法的有效性。
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引用次数: 1
Lower bound for discrete-time H∞ control performance 离散时间H∞控制性能的下界
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231771
Hongxia Wang, Huanshui Zhang, Li Yu
The paper aims to provide an approach to obtain a lower bound of H control performance in state space. It is not involved Riccati equation and only concerns with the solution to the standard H2 Riccati equation. As a consequence, the approach can help one to narrow the optimal H performance search via bisection method to a smaller range and considerably reduce the search cost. In addition, the approach enables us to have an insight into not only the link and difference between the optimal performance and the H performance including the optimal control and H control performance, the optimal estimation and the H estimation, but also the impact of the multiple-channel disturbances or previewable disturbance on the H control performance.
本文旨在提供一种在状态空间中获得H∞控制性能下界的方法。它不涉及里卡蒂方程,只涉及标准H2里卡蒂方程的解。因此,该方法可以帮助人们通过二分法将最优H∞性能搜索缩小到更小的范围,并大大降低搜索成本。此外,该方法使我们不仅能够洞察最优性能与H∞性能之间的联系和区别,包括最优控制和H∞控制性能,最优估计和H∞估计,而且还可以了解多通道干扰或可预见干扰对H∞控制性能的影响。
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引用次数: 0
NOx sensor ammonia-cross-sensitivity factor estimation in Diesel engine selective catalytic reduction systems 柴油机选择性催化还原系统中NOx传感器氨交叉敏感性因子估算
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231896
Hui Zhang
In this paper, the NOx sensor ammonia-cross-sensitivity factor observer design problem is studied for the applications in Diesel engine selective catalyst reduction (SCR) systems. Since the NOx sensor is cross-sensitive to gaseous ammonia, this phenomenon restricts the application of NOx sensor in the SCR system. A practical and economic approach is to design an observer to estimate the cross-sensitivity factor and correct the NOx sensor reading. Firstly, a three-state nonlinear model for the SCR system is adopted. It is assumed that the qth-order derivative of the temperature-dependent cross-sensitivity factor is zero. Then, based on the nonlinear model, a proportional-multiple-integral (PMI) observer of the factor is proposed and a nonlinear estimation error system is obtained. With the linear-parameter-varying (LPV) technique, the stability of the nonlinear estimation error system is investigated and the design method of the observer gains is developed. At the end, simulations and comparisons via an experimentally-validated full vehicle simulator are done to illustrate the efficacy and the advantages of the proposed approach over the existing methods.
针对柴油机选择性催化剂还原(SCR)系统中NOx传感器氨交叉敏感因子观测器的设计问题进行了研究。由于NOx传感器对气态氨交叉敏感,这一现象限制了NOx传感器在可控硅系统中的应用。一个实用和经济的方法是设计一个观测器来估计交叉敏感因子和校正氮氧化物传感器读数。首先,对可控硅系统采用三态非线性模型。假定与温度相关的交叉敏感因子的第五阶导数为零。然后,基于非线性模型,提出了因子的比例-多重积分观测器,得到了非线性估计误差系统。利用线性变参技术研究了非线性估计误差系统的稳定性,提出了观测器增益的设计方法。最后,通过实验验证的整车模拟器进行了仿真和比较,以说明该方法相对于现有方法的有效性和优势。
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引用次数: 24
An approach for fusion decision and its application to diagnose down-hole conditions of beam pump unit 一种融合决策方法及其在束流泵机组井下工况诊断中的应用
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231986
Ying Han, Kun Li
Multi-source decision is considered to be useful to make completed results. In this paper, D-S evidence theory is used to do multi-source decision fusion, and the conflict between evidences is thought to be caused by the uncertainty of mass function. In many traditional researches, evidence's own characteristics are seldom considered when fusing different mass functions. To solve this problem, the certain mass function is transformed into interval value using interval-valued intuitionistic fuzzy set theory. The weights of all evidences are determined by the calculation of grey relation degree between evidences. Then the mass function is modified and fused according to the D-S rule. An example for diagnosis of down-hole conditions of beam pump unit shows that the proposed method can receive satisfactory results.
多源决策被认为有助于获得完整的结果。本文采用D-S证据理论进行多源决策融合,认为证据之间的冲突是由质量函数的不确定性引起的。在许多传统研究中,在融合不同的质量函数时,很少考虑证据自身的特征。为了解决这一问题,利用区间值直觉模糊集理论将某质量函数转化为区间值。通过计算证据间的灰色关联度来确定各证据的权重。然后根据D-S规则对质量函数进行修正和融合。通过对束流泵机组井下工况的诊断,表明该方法能取得满意的结果。
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引用次数: 0
An analysis of a SIRS model with isolation on complex network 复杂网络上带隔离的SIRS模型分析
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231998
Fu Yong, Jin Yuanwei, Chen Zhaona
The research on immune strategy of epidemic spreading mostly based on simulation data which were lack of theoretical support. The paper was born to establish an improved SIRS epidemic model with isolation factor on both uniform network and scale-free network. We had got the disease-free equilibrium and proved the existence of the endemic equilibrium as well as its uniqueness. We also analyzed the stabilization of the system near the disease-free equilibrium and endemic equilibrium by Lyapunov stability theory. Finally we discussed the influence on the spreading of epidemic carried by isolation factor and structure of network which were supported by the simulation.
传染病传播的免疫策略研究大多基于仿真数据,缺乏理论支持。本文的目的是在均匀网络和无标度网络上建立具有隔离因子的改进SIRS流行模型。得到了无病平衡,证明了地方性平衡的存在及其独特性。利用Lyapunov稳定性理论分析了系统在无病平衡点和地方病平衡点附近的稳定性。最后讨论了隔离因子和网络结构对传染病传播的影响,并给出了仿真结果。
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引用次数: 1
Fault detection in induction motors using Park's vector approach and wavelet analysis 基于Park矢量法和小波分析的感应电机故障检测
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231716
J. Zarei, Shirin Yousefizadeh
In this paper, Park's vector analysis with wavelet packet transform has been proposed in order to detect bearing faults of induction motor. Park vector eliminates the main frequency of the original current measurement signal and increases the amplitude of the fault components. Employing wavelet packet transform, due to its ability in non-stationary signal analysis, improves the performance of the fault diagnosis approach. Signal energy is considered as a criterion to compare normal and faulty conditions. Experimental results show the superiority of the proposed method in fault diagnosis at early stages.
本文提出了基于小波包变换的帕克矢量分析方法来检测异步电动机轴承故障。Park矢量消除了原始电流测量信号的主频率,增加了故障分量的幅值。利用小波包变换对非平稳信号进行分析的能力,提高了故障诊断方法的性能。将信号能量作为比较正常和故障状态的判据。实验结果表明了该方法在早期故障诊断中的优越性。
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引用次数: 7
Adaptive ant colony optimization algorithm 自适应蚁群优化算法
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231524
Guan Ping, Xiu Chun-bo, Cheng Yi, Luo Jing, Lian Yanqing
An adaptive ant colony algorithm is proposed to overcome the premature convergence problem in the conventional ant colony algorithm. The adaptive ant colony is composed of three groups of ants: ordinary ants, abnormal ants and random ants. Each ordinary ant searches the path with the high concentration pheromone at the high probability, each abnormal ant searches the path with the high concentration pheromone at the low probability, and each random ant randomly searches the path regardless of the pheromone concentration. Three groups of ants provide a good initial state of pheromone trails together. As the optimization calculation goes on, the number of the abnormal ants and the random ants decreases gradually. In the late optimization stage, all of ants transform to the ordinary ants, which can rapidly concentrate to the optimal paths. Simulation results show that the algorithm has a good optimization performance, and can resolve traveling salesman problem effectively.
针对蚁群算法存在的早熟收敛问题,提出了一种自适应蚁群算法。适应性蚁群由三组蚂蚁组成:普通蚂蚁、异常蚂蚁和随机蚂蚁。每只普通蚂蚁以高概率搜索高浓度信息素的路径,每只异常蚂蚁以低概率搜索高浓度信息素的路径,每只随机蚂蚁随机搜索与信息素浓度无关的路径。三组蚂蚁一起提供了良好的信息素初始状态。随着优化计算的进行,异常蚂蚁和随机蚂蚁的数量逐渐减少。在优化后期,所有蚂蚁都转化为普通蚂蚁,可以快速集中到最优路径上。仿真结果表明,该算法具有良好的优化性能,能够有效地解决旅行商问题。
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引用次数: 31
Terminal sliding mode control for anti-synchronization of chaotic systems containing dead-zone nonlinearity 含死区非线性混沌系统反同步的终端滑模控制
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231553
Liyou Fang, Tie-shan Li
In this paper, we consider a terminal sliding mode control method for anti-synchronization of chaotic systems containing dead-zone nonlinearity. Based on the Lyapunov stability theorem, a terminal sliding mode controller is designed so that the states tracking error can reach the terminal sliding mode surface and converge to zero in a finite time. Finally, a Duffing-Holmes chaotic system is used to demonstrate the effectiveness of the proposed control law.
本文研究了一种终端滑模控制方法,用于含有死区非线性的混沌系统的反同步。基于Lyapunov稳定性定理,设计了末端滑模控制器,使状态跟踪误差在有限时间内到达末端滑模表面并收敛于零。最后,通过一个Duffing-Holmes混沌系统验证了所提控制律的有效性。
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引用次数: 1
Admissibility criteria for a class of nonlinear singular systems with an interval time-varying delay 一类具有区间时变时滞的非线性奇异系统的容许准则
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231746
Xinghua Zhang, Jiahua Zou, Di Yu
This paper investigates the admissibility analysis problem for a class of nonlinear singular systems with an interval time-varying delay. A delay-range-dependent and delay-rate-independent admissibility criterion for nonlinear singular time-delay system is first established. Furthermore, it is shown that the admissibility criterion proposed in this paper is more simple and less conservative than one in [Nonlinear Analysis: Real World Appl., 2011, 12: 1152-1162]. Then, a pair of admissibility criteria for linear singular systems with a constant and time-varying delay are given, respectively. All admissibility criteria are given in the form of simple linear matrix inequalities, which can be easily solved by the YALMIP toolbox of MATLAB. Finally, three numerical examples are given to illustrate the effectiveness of the theoretical method.
研究了一类具有区间时变时滞的非线性奇异系统的可容许性分析问题。首先建立了非线性奇异时滞系统与时滞范围无关、与时滞率无关的容许准则。此外,本文提出的容许准则比[非线性分析:现实世界应用]中的容许准则更简单,保守性更低。科学通报,2011,12:1152-1162]。然后,分别给出了具有常时滞和时变时滞的线性奇异系统的一对容许准则。所有容许准则都以简单的线性矩阵不等式的形式给出,可以很容易地用MATLAB的YALMIP工具箱求解。最后给出了三个数值算例,说明了理论方法的有效性。
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引用次数: 0
Tool trajectory planning of painting robot and its experimental 涂装机器人刀具轨迹规划及其实验研究
Pub Date : 2014-07-03 DOI: 10.1109/ICMC.2014.7231678
Yang Tang, Wei Chen
The automated tool trajectory planning of painting robot is still a challenging problem, especially for free-form parts. Because the current paint deposition rate function is too complicated, the paint accumulation on a surface is proposed. In order to achieve the new spraying operation standards, the paint thickness function for free-form surfaces is also given. A multi-objective constraint optimization problem is formulated. And the parallel-perpendicular case of trajectory planning for a surface with two patches is proposed. A workpiece is used to test the scheme. And the experimental results illustrate the feasibility and availability of the algorithm.
涂装机器人的自动化刀具轨迹规划仍然是一个具有挑战性的问题,特别是对于自由曲面零件。由于目前的涂料沉积速率函数过于复杂,提出了涂料在一个表面上的累积。为了达到新的喷涂操作标准,给出了自由曲面的涂层厚度函数。提出了一个多目标约束优化问题。并提出了两块曲面轨迹规划的平行-垂直情形。用一个工件来测试该方案。实验结果表明了该算法的可行性和有效性。
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引用次数: 6
期刊
2014 International Conference on Mechatronics and Control (ICMC)
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