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2016 2nd International Conference on Control Science and Systems Engineering (ICCSSE)最新文献

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A direct AC-AC converter for electronic power transformer based on energy injection control 一种基于能量注入控制的电力变压器直接交流变换器
Ziyi Zhao, Jian Yang, Qi Zhu, Chunsheng Wang, Fang Jian
This paper presents a direct AC-AC converter for an electronic power transformer based on the energy injection control. It achieves single-stage energy transformation. A simple and special direct AC-AC converter is used instead of a matrix converter with a complex control method and many switches. This paper analyzes its work models and operation principle in energy injection mode and free oscillation mode. A simulation is carried out to prove that the direct AC-AC converter work in soft switch state all the time, and the output current is unchanged when the load is changing. The simulation also verifies that this special electronic power transformer can achieve power single transformation and energy bidirectional flow, which is beneficial to improve energy utilization efficiency.
提出了一种基于能量注入控制的电子电力变压器直接交流变换器。实现单级能量转换。采用一种简单专用的直接交流变换器代替控制方法复杂、开关多的矩阵变换器。分析了其在能量注入模式和自由振荡模式下的工作模型和工作原理。仿真结果表明,直接交流变换器一直工作在软开关状态,且在负载变化时输出电流不变。仿真还验证了该专用电子电力变压器能够实现电力的单次变换和能量的双向流动,有利于提高能源利用效率。
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引用次数: 1
Complex Ginzburg-Landau equation with boundary control and observation 具有边界控制和观测的复金兹堡-朗道方程
Jing Li, Zhixiong Zhang
In this paper, we consider the control problem of the complex Ginzburg-Landau equation with Neumann boundary control (input) and Dirichlet boundary observation (output). We show that the input-output map is continuous for this nonlinear equation.
本文研究了具有诺伊曼边界控制(输入)和狄利克雷边界观测(输出)的复杂金兹堡-朗道方程的控制问题。我们证明了该非线性方程的输入输出映射是连续的。
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引用次数: 0
Design and implementation of PI and fuzzy PID supervisory controllers for a flexible link robot 柔性连杆机器人PI和模糊PID监控控制器的设计与实现
Mahshid Pourebrahim, M. Ayati, M. Mahjoob
In this paper, PID controllers are designed to enhance the trajectory tracking performance of a flexible link robot. Firstly, a PI controller is used where conventional Ziegler-Nichols method adjusts the controller parameters. In addition, Fuzzy PID controller is designed in which fuzzy rules are utilized on-line to tune the PID controller parameters based on the current value of error and its first time-derivative. Also, effects of several defuzzification methods on the closed-loop system are investigated in this paper. A flexible link robot is implemented and controllers are applied. Experimental results confirm the performance of the fuzzy PID controller.
为了提高柔性连杆机器人的轨迹跟踪性能,本文设计了PID控制器。首先,采用PI控制器,采用传统的齐格勒-尼科尔斯方法对控制器参数进行调整。此外,设计了模糊PID控制器,利用模糊规则根据误差的当前值及其一阶导数在线整定PID控制器参数。本文还研究了几种解模糊化方法对闭环系统的影响。实现了一种柔性连杆机器人,并应用了控制器。实验结果证实了模糊PID控制器的性能。
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引用次数: 4
Designing a LQR controller for an electro-hydraulic-actuated-clutch model 电液驱动离合器模型的LQR控制器设计
Majid Pourebrahim, A. Ghafari, Mahshid Pourebrahim
During the past decade, Electro-Hydraulic system has performed a significant role in industrial engineering as an actuator for high performance and precision positioning applications. In this case, many control methods have been developed for an electro-hydraulic actuated clutch. In this paper a Linear Quadratic Regulators (LQR) is proposed to trajectory control of a wet clutch actuated by a hydraulic servo valve mechanism. Simulation study was performed using linearized mathematical model of the system implemented in MATLAB software. Based on the simulation results performance of the proposed controller was evaluated and discussed.
在过去的十年中,电液系统作为一种执行器在工业工程中发挥了重要的作用,用于高性能和精密定位应用。在这种情况下,针对电液驱动离合器开发了许多控制方法。针对液压伺服阀机构驱动的湿式离合器轨迹控制,提出了一种线性二次型调节器(LQR)。利用MATLAB软件实现的系统线性化数学模型进行仿真研究。根据仿真结果,对所提控制器的性能进行了评价和讨论。
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引用次数: 10
Pulverizing system fault diagnosis based on least square support vector machine 基于最小二乘支持向量机的制粉系统故障诊断
Song M. Jiao
Least square support vector machine is an excellent algorithm which can be used to model and classify. If appropriate mapping functions and parameters are selected, the result should be better. An improved particle swarm optimization with changeable inertia parameter and velocity weight is present and then it is used to search better parameter to optimize support vector machine which are used to diagnose faults existed in coal powder producing process. Simulation results show that the improved PSO has higher search precision and global search ability and the faults diagnosis algorithm coupled PSO and LS-SVM has higher diagnosis accuracy rate. This diagnosis is reasonable and applicable.
最小二乘支持向量机是一种很好的建模和分类算法。如果选择合适的映射函数和参数,效果会更好。提出了一种改变惯性参数和速度权值的改进粒子群优化方法,并利用该方法搜索更好的参数来优化支持向量机,用于煤粉生产过程故障诊断。仿真结果表明,改进粒子群算法具有更高的搜索精度和全局搜索能力,粒子群算法与LS-SVM相结合的故障诊断算法具有更高的诊断准确率。这种诊断是合理和适用的。
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引用次数: 1
Design and analysis of a 4-PPPR parallel manipulator for strawberry harvesting in the ridge cultivation model 4-PPPR垄作草莓收获并联机械手的设计与分析
Kailiang Zhang, Liming Xu, Dan Zhang
Strawberries possess impressive nutritional and medicinal value, and the demand for them has been kept on increasing on the global market. For their harvest consumes a large portion of the whole production costs and causes health problems to the labors, researching and developing strawberry harvesting robots is becoming an emergency of meeting the economy requirement in the world. In consideration of the parallel mechanisms' advantages and the lack of their utilization in the field of strawberry harvest, this paper proposed a 4-PPPR manipulator to pick strawberries in the ridge culture. Based on the GF set theory, this manipulator was proved to have three translational motion DOF and one rotation DOF, which make it competent to conduct harvest task in the ridge cultivation model. Furthermore, analyses for inverse kinematics and velocity equation were also carried out in order to support further studies, such as controlling and optimizing of this manipulator.
草莓具有令人印象深刻的营养和药用价值,在全球市场上对它们的需求一直在不断增加。由于草莓收获消耗了整个生产成本的很大一部分,并且给劳动者带来了健康问题,研究和开发草莓收获机器人已成为世界各国满足经济需求的当务之急。针对并联机构的优点和在草莓收获领域应用的不足,提出了一种4-PPPR机械臂在垄沟栽培中采摘草莓。基于GF集理论,证明了该机械手具有3个平移运动自由度和1个旋转自由度,能够胜任垄作模式下的收获任务。在此基础上,对机器人的运动学逆解和速度方程进行了分析,为机器人的控制和优化等后续研究提供了依据。
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引用次数: 4
An adaptive grid model based on mobility constraints for UAV path planning 基于机动性约束的无人机路径规划自适应网格模型
Kun Yao, Jingwen Li, Bing Sun, Jieqiong Zhang
The path planning method using intelligence optimization algorithm cannot meet the unmanned aerial vehicle (UAV) mobility constraints because of its spatial grid division. Besides, the path smoothing method of interpolation after path planning increases the amount and complexity of algorithm. Considering to solve UAV path planning smoothing problem in the process of scenario modelling, this paper proposed an adaptive grid model, which provide the sparsest grid division under the UAV mobility constraints. The simulation results implicate that the path using proposed model satisfies mobility constraints and decreases the computational complexity effectively in both 2-D and 3-D path planning.
采用智能优化算法的路径规划方法由于其空间网格划分,不能满足无人机机动性约束。此外,路径规划后的插值路径平滑法增加了算法的量和复杂度。为解决无人机场景建模过程中的路径规划平滑问题,提出了一种在无人机机动性约束下网格划分最稀疏的自适应网格模型。仿真结果表明,该模型在二维和三维路径规划中均满足机动约束,有效降低了计算复杂度。
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引用次数: 11
Robust observer design for a class of one-sided lipschitz systems subject to time delays and disturbances in both plants and outputs 一类具有时滞和输出干扰的单侧lipschitz系统的鲁棒观测器设计
Minh Cuong Nguyen, H. Trinh
In this paper, we consider the problem of designing state observers for a class of one-sided Lipschitz time-delay systems subject to disturbances. Not only the plants but also the outputs of the systems are subject to time delays and disturbances. The one-sided Lipschitz and quadratically inner-bounded conditions, which are more general than the traditional Lipschitz condition, are utilized to cover a broader class of nonlinearities. Based on the Lyapunov-Krasovskii approach, a robust observer design is proposed where synthesis condition is derived in terms of linear matrix inequality (LMI). A numerical example is given to show the effectiveness of the obtained results.
本文研究一类受干扰的单侧Lipschitz时滞系统的状态观测器设计问题。不仅对象,而且系统的输出也会受到时间延迟和干扰。单侧Lipschitz条件和二次内界条件比传统的Lipschitz条件更为普遍,被用于涵盖更广泛的非线性问题。在Lyapunov-Krasovskii方法的基础上,提出了一种鲁棒观测器设计,其中综合条件由线性矩阵不等式(LMI)导出。算例验证了所得结果的有效性。
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引用次数: 1
期刊
2016 2nd International Conference on Control Science and Systems Engineering (ICCSSE)
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