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2019 Australian & New Zealand Control Conference (ANZCC)最新文献

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The low-sensitivity control with robust stability using Multiplex-feedback control system for a time-delay plant having a varying number of unstable poles 采用多路反馈控制系统对具有变数量不稳定极点的时滞对象进行了低灵敏度鲁棒稳定性控制
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945699
Daisuke Koyama, K. Hashikura, Md Abdus Samad Kamal, K. Yamada
In this paper, we propose a design method of the multiplex-feedback control system having low-sensitivity and robust stability for a single-input/single-output time-delay system with a varying number of poles in the closed right half plane. The low sensitivity control has high-performance of input-output property. However, it is well-known that the low-sensitivity control often cannot maintain the control system robust stability. According to Yamada, there is a low sensitivity control system design method maintaining robust stability for a single-input/single-output minimum-phase system with a varying number of unstable poles. In addition, Yu et al. expand the result of Yamada and propose a design method of the multiplex-feedback control system that has low-sensitivity characteristics less than a conventional two-degree-of-freedom control system. In this paper, we expand the result of Yamada and Yu et al. and propose a design method of the multiplex-feedback control system with robust stability that has low-sensitivity characteristics less than a conventional feedback control system for a single-input/single-output time-delay plant having a varying number of unstable poles.
本文针对右半封闭平面上具有变极数的单输入/单输出时滞系统,提出了一种具有低灵敏度和鲁棒稳定性的多路反馈控制系统设计方法。低灵敏度控制具有良好的输入输出性能。然而,众所周知,低灵敏度控制往往不能保持控制系统的鲁棒稳定性。Yamada认为,对于具有可变数量不稳定极点的单输入/单输出最小相位系统,存在一种保持鲁棒稳定性的低灵敏度控制系统设计方法。此外,Yu等人扩展了Yamada的结果,提出了一种比传统的二自由度控制系统具有更低灵敏度特性的多路反馈控制系统的设计方法。在本文中,我们扩展了Yamada和Yu等人的结果,并提出了一种具有鲁棒稳定性的多路反馈控制系统的设计方法,该系统具有低于传统反馈控制系统的低灵敏度特性,适用于具有可变数量不稳定极点的单输入/单输出时滞对象。
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引用次数: 0
Two Coprime-like Factorizations for Obtaining Stabilizing Controllers 稳定控制器的两个类素数分解
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945704
K. Mori
In this paper, we present a criterion of stabilizability of plants without coprime factorization for plants with equal number of inputs and outputs. This consists of factorizations of plants. Principally it requires precisely two coprime-like factorizations. We parametrize stabilizing controllers based on the criterion and also present their applications.
本文给出了一类具有相等输入和输出数量的非素数分解对象的稳定性判据。这包括植物的分解。原则上,它需要精确地进行两个类素数分解。在此基础上对稳定控制器进行了参数化,并给出了它们的应用。
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引用次数: 1
Port Hamiltonian modelling and control of a micro-channel 一个微通道的哈密顿港建模和控制
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945728
Nelson Cisneros, Héctor Ramírez, A. Rojas
This paper presents the model of a micro-channel using a port-Hamiltonian system approach. The model is represented by a series of tanks and pipes interconnected in series. These hydraulic elements can be interpreted as basic elements equivalent to electric components such as capacitors, inductance and resistors. Based on this model we design a controller using the total hydraulic-mechanical energy as a local Lyapunov function. The objective is to control the level of the micro-channel in some arbitrary point inside the channel.
本文提出了一种基于端口-哈密顿系统方法的微通道模型。该模型由一系列串联连接的储罐和管道表示。这些液压元件可以被解释为相当于电子元件的基本元件,如电容器、电感和电阻。在此模型的基础上,设计了以总液压机械能作为局部李雅普诺夫函数的控制器。目标是控制微通道在通道内任意点的电平。
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引用次数: 2
Trajectory tracking for vessels with the kinematic model using complex networks 基于复杂网络的船舶运动轨迹跟踪
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945750
R. Carmona, H. Sung, H. AlbertoVazquez, Young Shik Kim
In this work, the trajectory synchronization in ship networks is proposed applying the theory of complex dynamic networks. The network nodes were modeled by the kinematic equation in the horizontal plane, without considering environmental disturbances. To solve the trajectory synchronization problem, the error synchronization is calculated as the difference between the ships trajectories, and then this error must be converged to zero. The error convergence is proven by the Lyapunov analysis proposed in the present work. The control law design for this method is determined by the structural properties of the network, as well as the dynamic characteristics in the nodes, and the simple choice of a coupling constant. To keep the separation distance between the ships trajectories a repulsion coefficient is added into the control law. Numerical simulations were carried out using Matlab, showing a fast error convergence for network synchronization. The obtained results in this work suggest the use of this method to solve the trajectory tracking problem in coordinated motion between ships, where the nodes in the network include the dynamic equation for ships.
本文应用复杂动态网络理论,提出了船舶网络中的轨迹同步问题。在不考虑环境干扰的情况下,采用水平面运动方程对网络节点进行建模。为了解决轨迹同步问题,将同步误差计算为舰船轨迹差,然后将该误差收敛为零。本文提出的李雅普诺夫分析证明了误差收敛性。该方法的控制律设计由网络的结构特性、节点的动态特性以及耦合常数的简单选择来决定。在控制律中加入排斥力系数以保持两船轨迹之间的距离。仿真结果表明,该方法具有较快的误差收敛速度。本文的研究结果表明,该方法可用于解决船舶间协调运动的轨迹跟踪问题,其中网络中的节点包含船舶的动力学方程。
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引用次数: 0
Fuzzy Tuner Based Modified Cascade Control for Electromagnetic Levitation System 基于模糊调谐器的电磁悬浮系统修正串级控制
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945622
R. Gandhi, D. Adhyaru
This research work presents the modified cascade control scheme using the Fuzzy Tuner. The proposed control structure is implemented for the Electromagnetic Levitation System (EMLS). This EMLS is a group of the highly nonlinear, unstable and electromechanically coupled system. The conventional cascade control with PID and PI controllers as primary and secondary loops is one of the widely used control approaches for the EMLS. However, the constant gains of the conventional cascade control structure may not provide the proper stabilization of the levitating object in the presence of the nonlinearities and the payload disturbances. Hence, Fuzzy Tuner is incorporated for the automatic tuning of the controller gains based on the ITAE criterion. Additionally, the nonlinear estimator is hybridized with the scheme to provide an online estimate of the vertical velocity of the EMLS. Also, the feed-forward compensator is introduced to compress the effect of the variation of the operating conditions. The experimental hardware is utilized to perform the stabilizing control and tracking control operations. The vertical payload disturbance in the range of 0-40 % is considered to check the efficacy of the proposed modified cascade controller.
本文提出了一种基于模糊调谐器的改进串级控制方案。所提出的控制结构已应用于电磁悬浮系统(EMLS)。该系统是一组高度非线性、不稳定的机电耦合系统。传统的以PID和PI控制器作为主回路和次回路的串级控制是EMLS广泛使用的控制方法之一。然而,在存在非线性和载荷扰动的情况下,传统串级控制结构的恒定增益可能无法提供适当的悬浮物稳定。因此,采用模糊调谐器对基于ITAE准则的控制器增益进行自动调谐。此外,将非线性估计器与该方案进行杂交,以提供EMLS垂直速度的在线估计。同时,还引入了前馈补偿器,减小了运行工况变化的影响。利用实验硬件进行稳定控制和跟踪控制操作。考虑0 ~ 40%范围内的垂直载荷扰动来检验所提出的改进串级控制器的有效性。
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引用次数: 0
A Formation Maintenance and Reconstruction Method of UAV Swarm based on Distributed Control with Obstacle Avoidance 基于分布式避障控制的无人机群编队维护与重构方法
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945601
Xiaowei Fu, Jing Pan, Haixiang Wang, Xiao-guang Gao
This paper studies the problem of formation maintenance and reconstruction of UAV swarm with obstacle avoidance. Firstly, a collision prediction mechanism is introduced to determine whether each UAV needs to avoid obstacles or not. Secondly, by designing the position and speed consistency control law between UAVs, each UAV and the virtual leader, combined with the obstacle avoidance mechanism based on the artificial potential field method, the swarm formation control and maintenance algorithm with obstacle avoidance is realized. Finally, the formation transformation is realized by changing the relative positional relationship between each UAV and the virtual leader. The simulation results show that the UAV swarm can generate, maintain and reconstruct the expected formation in a real-time distributed manner while avoiding obstacles.
研究了具有避障特性的无人机编队维护与重构问题。首先,引入碰撞预测机制,确定每架无人机是否需要避障;其次,通过设计无人机、各无人机和虚拟领导者之间的位置和速度一致性控制律,结合基于人工势场法的避障机制,实现了具有避障功能的蜂群编队控制与维护算法;最后,通过改变各无人机与虚拟leader之间的相对位置关系实现编队变换。仿真结果表明,该无人机群能够以实时分布式的方式生成、保持和重构期望编队,同时避开障碍物。
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引用次数: 4
Trajectory tracking of a quadrotor using TID controller 基于TID控制器的四旋翼飞行器轨迹跟踪
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945770
Kranthi Kumar Deveerasetty, Yimin Zhou, B. Han
In this paper, a TID controller is applied for the trajectory tracking of a quadrotor. The mathematical model of the control system is derived and compared with the traditional PD (Proportional-Derivative) controller. In order to improve the control precision of the UAV, the controller is designed by selecting the proper tuning parameters. To explore the effectiveness of the proposed controller, dynamic responses of a UAV obtained by using the TID controller and the validation of the results compared with the PD controller. The control performances are analysed by using MATLAB/Simulink model.
本文将TID控制器应用于四旋翼飞行器的轨迹跟踪。推导了控制系统的数学模型,并与传统的比例导数控制器进行了比较。为了提高无人机的控制精度,通过选择合适的整定参数对控制器进行了设计。为了验证所提控制器的有效性,利用TID控制器获得了无人机的动态响应,并将结果与PD控制器进行了对比验证。利用MATLAB/Simulink模型对其控制性能进行了分析。
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引用次数: 1
Path Planning for a Mobile Robot in Unknown Dynamic Environments Using Integrated Environment Representation and Reinforcement Learning 基于集成环境表示和强化学习的未知动态环境下移动机器人路径规划
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945595
Jian Zhang
This study develops a new path planning method which utilizes integrated environment representation and reinforcement learning to control a mobile robot with non-holonomic constraints in unknown dynamic environments. With the control algorithm presented, no approximating the shapes of the obstacles or even any information about the obstacles’ velocities is needed. Our novel approach enables to find the optimal path to the target efficiently and avoid collisions in a cluttered environment with steady and moving obstacles. We carry out extensive computer simulations to show the outstanding performance of our approach.
本文提出了一种新的路径规划方法,利用集成环境表示和强化学习来控制未知动态环境中具有非完整约束的移动机器人。所提出的控制算法不需要逼近障碍物的形状,甚至不需要任何障碍物的速度信息。我们的新方法能够有效地找到到达目标的最佳路径,并避免在具有稳定和移动障碍物的混乱环境中发生碰撞。我们进行了大量的计算机模拟,以显示我们的方法的卓越性能。
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引用次数: 3
Friction pre-sliding control and sliding impulse compensation 摩擦预滑控制与滑动冲量补偿
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945746
David G. Taylor
Precision position control in the order of micro metres demands that friction is either compensated for or included in the control system loop. The dynamic friction models including LuGre, Elasto-plastic and Generalized Maxwell-Slip (GMS) have been shown to model friction. Each of these dynamic models have the state variables of bristle displacement (z) and bristle displacement velocity dz/dt. They each have an equation that relates the bristle displacement velocity to the sliding velocity (v). This principle is disputed. It is shown that the presliding friction force can be analytically calculated from the applied electrical force, without having to have any relationship of the sliding velocity to the bristle displacement velocity. This leads to a feedback control system for presliding bristle displacement, without actual measurement of it.The dynamic friction models are currently used in real time control to provide feed forward compensation. Feed forward compensation is pre-emptive in that it provides anticipated friction force based on the planned velocity. A new control system strategy and method of overcoming the sliding friction forces called “impulse control” is developed which can be applied pre-emptively. Impulse control means the control of the time integral of a state variable. The term is not used to refer to control by short force pulses in this paper. The impulse control strategy is more generally applicable than just for the control of systems with friction. This friction control methodology is still awaiting a full practical implementation.
在微米量级的精确位置控制要求摩擦补偿或包括在控制系统回路中。包括LuGre、弹塑性和广义麦克斯韦滑移(GMS)在内的动力摩擦模型已被证明可以模拟摩擦。每个动态模型都有刚毛位移(z)和刚毛位移速度(dz/dt)的状态变量。它们都有一个将刚毛位移速度与滑动速度(v)联系起来的方程。这个原理是有争议的。结果表明,滑动前摩擦力可以由施加的电场力解析计算,而不必与滑动速度和刷毛位移速度有任何关系。这导致了一个反馈控制系统预滑脱猪鬃位移,没有实际测量它。动态摩擦模型目前用于实时控制,以提供前馈补偿。前馈补偿是先发制人的,因为它根据计划的速度提供预期的摩擦力。提出了一种新的控制策略和克服滑动摩擦力的方法,即“脉冲控制”。脉冲控制是指对状态变量的时间积分进行控制。在本文中,该术语不用于指短脉冲力控制。脉冲控制策略比只适用于有摩擦系统的控制更普遍。这种摩擦控制方法仍在等待全面的实际实施。
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引用次数: 0
Detuning Iterative Continuous Cycling based Multi-loop PI control for multivariable processes 基于失谐迭代连续循环的多环PI控制
Pub Date : 2019-11-01 DOI: 10.1109/ANZCC47194.2019.8945741
Shubham Khandelwal, K. Detroja
Encountering multivariable systems in process industries is quite common. Along with effectiveness and robustness, simplicity and easy scalability are the utmost requirements expected in a control system design. In this regard, we propose the Detuning Iterative Continuous Cycling (DICC) method for decentralized PI control of multi-input multi-output (MIMO) processes. The proposed DICC design utilizes the idea of continuous cycling for obtaining the ultimate parameters for the effective open-loop transfer functions (EOTFs). While for systems the controller settings are easily derived for the EOTFs, controller tuning for higher dimensional systems is challenging due to complicated EOTF dynamics. Therefore, the effective transfer function (ETF) description of the large scale MIMO system is used for obtaining the ultimate parameters during the closed loop continuous cycling test. Thereafter for obtaining multi-loop PI controller settings, the derived ultimate parameters for the EOTFs/ETFs are subjected to appropriate detuning adjustments. The wide applicability, effectiveness, simplicity and easy scalability of the proposed DICC method has been demonstrated by considering various $2 times 2, 3 times 3$ and $4 times 4$ dimensional MIMO systems. Further, robustness of the proposed design has also been tested by introducing a plant-model mismatch of ± 10% during the closed-loop simulations.
在过程工业中遇到多变量系统是很常见的。除了有效性和鲁棒性外,简单性和易于扩展性是控制系统设计的最高要求。在这方面,我们提出了失谐迭代连续循环(DICC)方法用于多输入多输出(MIMO)过程的分散PI控制。提出的DICC设计利用连续循环的思想来获得有效开环传递函数(EOTFs)的最终参数。虽然对于系统来说,控制器设置很容易为EOTF导出,但由于复杂的EOTF动力学,高维系统的控制器调整具有挑战性。因此,采用大规模MIMO系统的有效传递函数(ETF)描述来获取闭环连续循环测试过程中的最终参数。然后,为了获得多环PI控制器设置,对导出的eotf / etf的最终参数进行适当的失谐调整。通过考虑不同的$2 × 2,3 × 3$和$4 × 4$维MIMO系统,证明了DICC方法的广泛适用性、有效性、简单性和易于扩展性。此外,通过在闭环模拟中引入±10%的植物模型失配,还测试了所提出设计的鲁棒性。
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引用次数: 0
期刊
2019 Australian & New Zealand Control Conference (ANZCC)
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