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2014 UKACC International Conference on Control (CONTROL)最新文献

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A ΓZ-source based hybrid power converter for battery-fuel cell hybrid electric vehicle 基于ΓZ-source的混合动力转换器,用于电池-燃料电池混合动力汽车
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915177
Jun Cai, Qing-Chang Zhong, D. Stone
Low cost and high reliability are the main issues considered in power converter design for hybrid electric vehicle. In this paper, a hybrid power converter is proposed for the power flow control of the battery-fuel cell hybrid electric vehicle. The converter consists of a unidirectional Γ Z-source converter and a bidirectional DC-DC converter. By controlling the voltage of the Z source capacitor and the modulation index of the inverter, the power flow between the fuel cell, battery and the load can be controlled flexibly. The different operation modes of the system and the power flow control strategies are analysed. To verify the validity of the proposed power converter topology and the control methods, system simulation model is developed in Matlab/Simulink environment. In addition, the simulation model is also implemented in the RT-LAB real-time simulator. The simulation results demonstrated the feasibility of the proposed methods.
低成本和高可靠性是混合动力汽车电源转换器设计中要考虑的主要问题。针对电池-燃料电池混合动力汽车的潮流控制问题,提出了一种混合动力转换器。该变换器由单向Γ z源变换器和双向DC-DC变换器组成。通过控制Z源电容的电压和逆变器的调制指数,可以灵活地控制燃料电池、电池和负载之间的功率流。分析了系统的不同运行方式和潮流控制策略。为了验证所提出的功率变换器拓扑结构和控制方法的有效性,在Matlab/Simulink环境下建立了系统仿真模型。此外,仿真模型也在RT-LAB实时仿真器中实现。仿真结果验证了所提方法的可行性。
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引用次数: 0
Applications of the inerter in railway vehicle suspension 干涉器在铁道车辆悬架中的应用
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915200
A. Z. Matamoros-Sanchez, Roger M. Goodaoll
This paper is a review of currently identified application possibilities of the inerter in railway vehicle suspensions. We survey the current state of research in the field, including main results, discussions and conclusions regarding overall applicability. Computationally simulated benefits of inerter-based passive and hybrid mechatronic suspensions in differently allocated suspensions for two-axle and bogied vehicles are summarised.
本文综述了目前确定的干涉器在轨道车辆悬架中的应用可能性。本文综述了该领域的研究现状,包括主要成果、讨论和总体适用性的结论。总结了基于交互的被动和混合机电悬架在不同配置的双轴和转向架车辆悬架中的计算模拟效益。
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引用次数: 3
Adaptive tracking control for a new mobile manipulator model 一种新型移动机械臂模型的自适应跟踪控制
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915122
Kang Wu, Wei Sun
The adaptive trajectory and force tracking control is considered for a new mobile manipulator under both holonomic and affine constraints with the presence of uncertainties and disturbances in this paper. A new state transformation is proposed to deal with the affine constraints, and then based on a suitable reduced dynamic model, adaptive controller is presented to ensure that the states of closed-loop system asymptotically track to desired trajectories while the constraint force remains bounded by tuning design parameters. Detailed simulation results confirm the effectiveness of the control strategy.
研究了在完整约束和仿射约束下存在不确定性和干扰的新型移动机械臂的自适应轨迹和力跟踪控制问题。提出了一种新的状态变换方法来处理仿射约束,然后基于合适的简化动力学模型,提出了自适应控制器,以保证闭环系统的状态渐近地跟踪到期望的轨迹,同时约束力保持在可调设计参数的范围内。详细的仿真结果验证了控制策略的有效性。
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引用次数: 3
Exact linearization by feedback of state dependent parameter models applied to a mechatronics demonstrator 状态相关参数模型的反馈精确线性化应用于机电一体化演示器
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915209
E. M. Shaban, A. Nada, C. J. Taylor
The paper develops an exact linearization by feedback approach for State Dependent Parameter (SDP), Proportional-Integral-Plus (PIP) control. The method is demonstrated using a simple automated belt driven by a DC motor equipped with a single board Reconfigurable Input-Output (sbRIO-9631) card, within a Field Programmable Gate Array (FPGA), and with a real time processor for control. The demonstrator is first modeled using a discrete-time SDP model structure, in which the parameters are functionally dependent on measured system states. An exact linearization step returns a linear model with unity coefficients, which is subsequently used to design a PIP control algorithm based on linear system design strategies, including pole assignment and optimal linear quadratic design. Preliminary experimental results demonstrate that the new approach yields an acceptable control performance for the nonlinear system.
本文提出了一种状态相关参数(SDP) -比例-积分-加(PIP)控制的精确线性化反馈方法。该方法使用一个简单的自动皮带,由一个配备单板可重构输入输出(sbRIO-9631)卡的直流电机驱动,在一个现场可编程门阵列(FPGA)内,并带有一个实时处理器进行控制。演示器首先使用离散时间SDP模型结构建模,其中参数在功能上依赖于测量的系统状态。精确线性化步骤返回具有单位系数的线性模型,随后用于设计基于线性系统设计策略的PIP控制算法,包括极点配置和最优线性二次设计。初步实验结果表明,该方法对非线性系统具有良好的控制性能。
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引用次数: 0
Energy amplification of poiseuilleflow in a pipe lined with riblets 波纹管道中泊流体的能量放大
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915145
Shi Zhao, S. Duncan
Using as a passive method for drag reduction, riblets are structures that run parallel to one another and are aligned longitudinally to fluid flows. While the benefits of riblets have been well known, the mechanism of drag reduction is not fully understood. This paper analyses the effects of riblet structures on energy amplification in streamwise constant Poiseuille flow in a circular pipe. The linearised governing equations of the flow are written into the two-dimensional/three-component form. Through a change of coordinates, the rough domain is transformed into a smooth one. The equations are discretised using spectral methods and the finite-dimensional approximation of the system is represented by a state space model. The transient growth in the flow without external forcing and H2 norm of the system subject to stochastic noise are calculated. Our computation shows that the presence of riblets can reduce the transient growth and H2 norm in pipe flow.
作为一种被动的减阻方法,波纹是一种相互平行运行的结构,并在纵向上与流体流动对齐。虽然波纹的好处已经众所周知,但其减少阻力的机制尚不完全清楚。本文分析了波纹结构对圆管内顺流恒定泊泽维尔流能量放大的影响。流的线性化控制方程被写成二维/三分量形式。通过变换坐标,将粗糙域转化为光滑域。用谱方法对方程组进行离散,用状态空间模型表示系统的有限维近似。计算了系统在无外力作用下的瞬态增长和随机噪声作用下的H2范数。计算表明,裂纹的存在可以降低管道流动中的瞬时生长和H2范数。
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引用次数: 0
Multivariable control of a lighter than air system 轻空气系统的多变量控制
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915149
J. Samson, R. Katebi
This paper describes the control theory behind a new group of wind energy systems known as Airborne Wind Energy Systems (AWES). The control architecture of a kite system and rigid body system is explored and this is then compared to a lighter than air system developed by Altaeros Energies. The plant model of this system is described in detail and the main dynamics of the system are outlined. This paper concludes with a simulation study looking at pitch and altitude control using a multivariable PID control strategy. This was developed using the Pettinen-Koivo method and tuned on a linearized model of the Altaeros System. Results show good tracking in both altitude and pitch set-points.
本文描述了一组新的风能系统背后的控制理论,称为机载风能系统(awe)。探索了风筝系统和刚体系统的控制结构,然后将其与Altaeros能源公司开发的轻空气系统进行了比较。详细描述了该系统的对象模型,并概述了系统的主要动力学特性。最后,本文对采用多变量PID控制策略的俯仰和高度控制进行了仿真研究。这是使用Pettinen-Koivo方法开发的,并在Altaeros系统的线性化模型上进行了调整。结果表明,在高度和俯仰设定点上跟踪良好。
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引用次数: 2
Dynamic analysis for the leg mechanism of a wheel-leg hybrid rescue robot 轮-腿混合救援机器人腿部机构的动力学分析
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915191
Xiaojie Wang, Xiaoyun Wang, Hongbo Wang, Ling Lu, Hongnian Yu, L. Vlădăreanu, D. Melinte
The inverse dynamic of the leg with a (2-UPS+U)R series-parallel mechanism of the hybrid rescue robot is analyzed in this paper. First, the constrained relationships in the leg are determined, and the 6×6 Jacobian matrices of the series-parallel leg are derived and presented. Second, the velocity, acceleration, angular velocity and acceleration of center of mass in each link are solved and the dynamic model of the series-parallel leg is established with virtual work principle and its standard Lagrange formula are presented in detail. In the end, the numerical simulation of the series-parallel leg is carried out. The dynamic equations of the leg lay the foundation for a number of computational algorithms that are useful in the later control, simulation, animation and built the hybrid rescue robot prototype.
对混合救援机器人(2-UPS+U)R串并联机构的腿部逆动力学进行了分析。首先,确定了腿的约束关系,推导并给出了串并联腿的6×6雅可比矩阵。其次,利用虚功原理求解了各连杆的速度、加速度、角速度和质心加速度,建立了串联并联腿的动力学模型,并给出了其标准拉格朗日公式;最后,对串并联支腿进行了数值模拟。腿的动力学方程为后续的控制、仿真、动画制作和混合救援机器人原型的建立奠定了基础。
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引用次数: 11
Classification of functional near-infrared spectroscopy signals applying reduction of scalp hemodynamic artifact 应用头皮血流动力学伪影还原的功能性近红外光谱信号分类
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915226
Takanori Sato, Kyoko Sugai, I. Nambu, Y. Wada
Functional near-infrared spectroscopy (fNIRS) has been applied to brain-computer interfaces (BCIs) in many studies because of its simplicity of use and portability. However, scalp-hemodynamics creates artifacts that often contaminate fNIRS signals and substantially degrade the signal-to-noise ratio of functional signals. Although some studies have reported methods for reducing these artifacts, no study has investigated their effects on BCIs. Previously, we proposed to remove these artifacts using a method that estimates the global scalp-hemodynamic component from a minimal number of short source-detector distance channels (Short-channels), and removes its influence from standard source-detector distance channels using a general linear model (GLM) that incorporates the scalp-hemodynamics in the design matrix. Here, we investigated the effects of applying scalp-hemodynamic reduction to classify four actions: grasping a ball with the right, left, or both hands, or resting. We used a support vector machine (SVM) and binary-tree multi-classification, and compared five types of ΔOxy-Hb features: time samples of raw data, of data after subtracting out scalp-hemodynamics, and of the estimated scalp-hemodynamics themselves, and GLM β values for the cerebral-hemodynamic component obtained using a standard GLM without the scalp-hemodynamic model and those obtained using our proposed GLM. Results showed that the proposed method successfully improved the signal-to-noise ratio of ΔOxy-Hb signals, and the β values estimated by the proposed method showed the highest accuracy for classification. Thus, reduction of scalp-hemodynamic artifacts using our method may make fNIRS-BCIs more accurate.
功能近红外光谱(fNIRS)由于其使用简单、便携等优点,在脑机接口(bci)领域得到了广泛的应用。然而,头皮血流动力学产生的伪影通常会污染近红外光谱信号,并大大降低功能信号的信噪比。虽然一些研究报道了减少这些伪影的方法,但没有研究调查它们对脑机接口的影响。在此之前,我们建议使用一种方法去除这些伪影,该方法从最小数量的短源检测器距离通道(short -channels)中估计全局头皮血流动力学分量,并使用将头皮血流动力学纳入设计矩阵的一般线性模型(GLM)从标准源检测器距离通道中去除其影响。在这里,我们研究了应用头皮血流动力学还原对四种动作的影响:用右手、左手或双手抓球,或休息。我们使用支持向量机(SVM)和二叉树多分类,比较了5种ΔOxy-Hb特征:原始数据的时间样本、减去头皮血流动力学的数据的时间样本和估计的头皮血流动力学本身的时间样本,以及使用不含头皮血流动力学模型的标准GLM和使用我们提出的GLM获得的脑血流动力学成分的GLM β值。结果表明,该方法成功地提高了ΔOxy-Hb信号的信噪比,估计出的β值具有最高的分类准确率。因此,使用我们的方法减少头皮血流动力学伪影可能使fnirs - bci更准确。
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引用次数: 2
Multicriteria diagnosis of synchronous machines — Rotor-mounted sensing system. Rotor signal collector construction 同步电机的多标准诊断。转子式传感系统。转子信号采集器结构
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915182
J. G. Ferreira, T. Sobczyk
As part of an extended research on synchronous machines, a new technique applied to a rotor-mounted sensing system will be introduced. The capabilities of sensing the physical variables over the rotor are quite promising. A 7.5 kW 4 salient-pole synchronous machine with configurable fault scenarios is available for this research. The measurements in the rotor are taken through two sets of 25 slip-rings expressly mounted for this purpose. The sensors installed are four thermocouples, one on each pole; the shaft voltage is measured referred to the ground. The last capability of this system is to measure the current flowing over the damping cage bars. Having more reliable and precise condition monitoring systems will make it possible to define the assessment of the machine with more accuracy. Consequently, making this information available for the operation and maintenance scheduling of industrial plants will lead to more efficient processes through improved operation schemes according to the actual status of the system.
作为同步电机扩展研究的一部分,将介绍一种应用于转子安装传感系统的新技术。在转子上感应物理变量的能力是相当有前途的。7.5 kW 4凸极同步电机具有可配置的故障场景,可用于本研究。转子中的测量是通过两组25个滑环进行的,这些滑环是专门为此目的安装的。安装的传感器是四个热电偶,每极一个;轴电压是参照地测得的。该系统的最后一个功能是测量流过阻尼笼杆的电流。拥有更可靠和精确的状态监测系统,将有可能更准确地定义机器的评估。因此,将这些信息提供给工业工厂的操作和维护调度,将根据系统的实际状况,通过改进操作计划,导致更有效的过程。
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引用次数: 3
Model based hysteresis compensation for IPMC sensors 基于模型的IPMC传感器滞回补偿
Pub Date : 2014-07-09 DOI: 10.1109/CONTROL.2014.6915151
Yonghong Tan, Ruili Dong, Hong He
Ionic Polymer-Metal Composite (IPMC) is a kind of smart material which can be used as sensors or actuators. As IPMC is very flexible and can produce larger electric signal when it is deformed, it is more suitable to be used as sensors to measure deformation, displacement and flow rate. However, hysteresis existing in IPMC will deteriorate the performance of the sensor. In this paper, a neural network model based compensator is proposed to reduce the effect of hysteresis. In the compensation scheme, a method of expanded input space is introduced to transform the multi-valued mapping of hysteresis to a one-to-one mapping. The corresponding theory of the construction of the expanded input space is illustrated. Then, based on the expanded input space, the inverse model based compensator is then constructed. Moreover, a geometric compensation method is proposed to compensate for the measuring error of the laser sensor on IPMC chip. Finally, experimental results are presented to validate the proposed method of hysteresis compensation for IPMC sensors.
离子聚合物-金属复合材料(IPMC)是一种可以用作传感器或执行器的智能材料。由于IPMC非常灵活,在变形时可以产生较大的电信号,因此更适合用作测量变形、位移和流量的传感器。但IPMC中存在的磁滞会影响传感器的性能。本文提出了一种基于神经网络模型的补偿器来减小磁滞的影响。在补偿方案中,引入扩展输入空间的方法,将迟滞的多值映射转化为一对一映射。给出了相应的扩展输入空间构造理论。然后,基于扩展后的输入空间,构造了基于逆模型的补偿器。此外,还提出了一种几何补偿方法来补偿IPMC芯片上激光传感器的测量误差。最后给出了实验结果,验证了所提出的IPMC传感器滞后补偿方法的有效性。
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引用次数: 2
期刊
2014 UKACC International Conference on Control (CONTROL)
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