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针对二级直线倒立摆系统;采用拉格朗日方程法建立其理论模型;分别使用线性二次最优控制(Linear Quadratic Regulator;LQR)及基于趋近律的滑模控制(Sliding Mode Control;SMC)算法来实现干扰存在情况下倒立摆的平衡控制。对于LQR算法;研究了矩阵[Q]和矩阵[R]与反馈控制矩阵[K]的定性关系;并经过反复多次实验;不断试凑;得到一组良好的控制参数;实现了倒立摆的稳定控制。SMC算法采用基于指数趋近律的控制方法进行了滑模变结构控制器的设计;并利用边界层法来进一步削弱抖振。最后通过仿真及实验;实现了倒立摆的实物平衡控制。 相似文献
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把视觉引入倒立摆的控制中,建立了视觉伺服的倒立摆系统.利用针孔摄像机的成像几何模型建立与图像坐标有关的状态空间方程,采用基于图像的视觉伺服控制方法,对摆杆在像平面上的位置进行实时控制.在Matlab环境下用LQR(Linear Quadratic Regulator)和极点配置法进行仿真,对比仿真结果.验证了系统方程推导的正确性,以及控制算法的有效性. 相似文献
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二级倒立摆是一个典型的欠驱动非线性系统,其控制问题具有一定的挑战性.为了解决时变参考信号下二级倒立摆的起摆和跟踪控制问题,本文提出了一种基于能量控制与近似输出调节方法的起摆和三阶控制器设计方案.首先,采用能量控制方法将第1级摆杆从下垂位置摆起到倒立位置附近;其次,采用滑模控制方法将第1级摆杆稳定在倒立位置,同时,采用等效小车与能量控制相结合的方法将第2级摆杆摆起到倒立位置附近;最后,采用基于近似输出调节理论的多项式近似方法设计三阶控制器实现二级倒立摆的位置跟踪控制.仿真和实验结果均验证了该控制方案的有效性. 相似文献
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基于简化模型的倒立摆控制实验研究 总被引:5,自引:0,他引:5
王晓凯 《计算技术与自动化》1997,16(1):16-19
本文根据二级倒立摆系统的特点,对其离散数学模型进行了简化,基于这个简化模型,应用二次型性能和指标最优控制的方法,设计控制规律,避免了状态观测器的设计过程,实验结果证明了这种方法的可行性。 相似文献
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介绍了倒立摆系统的几种主要控制方法,如线性控制、模糊控制、拟人智能控制和鲁俸控制,分析了各种方法的特点以及它们之间的联系,对各种方法的优缺点进行了评价.通过上述内容的介绍与探讨,充分展示了倒立摆作为一个典型控制对象,在控制理论研究中的重要地位.最后,揭示了研究倒立摆控制问题的现实意义,并对这一领域的前景提出展望. 相似文献
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对单级倒立摆系统的平衡控制问题进行了研究,分别采用PD,PI和PID三种方案实现了单级倒立摆系统的平衡控制。首先,建立系统的数学模型,然后通过仿真实验设计并整定各方案的控制器参数,将所设计的控制器分别在实际的物理设备上进行实时控制实验,都成功地实现了倒立摆的平衡控制。实际控制结果验证了各方案的正确性和有效性。 相似文献
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Hamid Khaloozadeh 《Asian journal of control》2014,16(4):1191-1201
This paper suggests a new method to design observers in a class of nonlinear time‐delay systems with delays in system states. The method is based on an extension of the well‐known state‐dependent Riccati equation (SDRE) technique. The conditions for locally asymptotic stability of the proposed observer are investigated. Some numerical simulations are provided to show the design procedure and the flexibility of the proposed observer. 相似文献
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Chutiphon Pukdeboon 《Asian journal of control》2013,15(5):1284-1294
This paper investigates the problem of output feedback attitude tracking control of a rigid spacecraft in the presence of external disturbances. Two optimal control laws with a disturbance estimator are developed to deal with this problem. An adapted extended state observer is used to estimate the angular velocity tracking errors and to allow for compensation for the total disturbances. The proposed control can be expressed as the sum of a nonlinear optimal controller and an estimated disturbance. For the optimal controller, the state‐dependent Riccati equation and optimal Lyapunov techniques are employed to solve the infinite‐time nonlinear optimal control problem. The developed controllers can minimize a performance index and ensure the stability of the closed‐loop system and external disturbance attenuation. On the other hand, using the adapted extended state observer, the asymptotic convergence of estimation error dynamics is proven. An example of multiaxial attitude manoeuvres is given and simulation results are included to demonstrate and verify the usefulness of the proposed controllers. 相似文献
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Yazdan Batmani 《Asian journal of control》2018,20(3):1303-1311
In this paper, two suboptimal event‐triggered control techniques are proposed for both the regulation and the tracking problems in a broad class of nonlinear networked control systems. The proposed techniques are based on the state‐dependent Riccati equation (SDRE) methodology. In the case of the regulation problem, the asymptotic stability of the origin of the closed‐loop system under the proposed event‐triggered control law is investigated. In addition, for the tracking problem, it is proved that the tracking error between the system output and its desired trajectory converges asymptotically to zero under some mild conditions. It is shown that the proposed methods can considerably reduce the information exchange between the controller and the actuator. Due to the implementation procedures of the proposed techniques, no Zeno behavior is occurred. Three numerical simulations are provided to demonstrate the design procedure and the flexibility of the proposed event‐triggered control techniques. 相似文献
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单级倒立摆控制是一个即复杂而又对准确性、快速性要求很高的非线性不稳定系统控制问题。单级倒立摆数学模型的建立对研究其稳定性具有指导作用。用拉格朗日功能平衡法建立了倒立摆的刚体动力学方程,采用了LQR法对其进行了控制设计,并且进行了MATLAB仿真,结果表明此方法均可以成功控制倒立摆,使其稳定并具有良好的鲁棒性。 相似文献
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In this paper we consider the problem of infinite-horizon sensor scheduling for estimation in linear Gaussian systems. Due to possible channel capacity, energy budget or topological constraints, it is assumed that at each time step only a subset of the available sensors can be selected to send their observations to the fusion center, where the state of the system is estimated by means of a Kalman filter. Several important properties of the infinite-horizon schedules will be presented in this paper. In particular, we prove that the infinite-horizon average estimation error and the boundedness of a schedule are independent of the initial covariance matrix. We further provide a constructive proof that any feasible schedule with finite average estimation error can be arbitrarily approximated by a bounded periodic schedule. We later generalized our result to lossy networks. These theoretical results provide valuable insights and guidelines for the design of computationally efficient sensor scheduling policies. 相似文献
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倒立摆网络控制系统的自适应灰色预测策略研究 总被引:1,自引:0,他引:1
基于灰色理论、自适应切换方法以及MIMO网络控制系统的研究,提出了一种网络环境下自适应灰色预测控制策略,并对整个建模过程进行了详细推导。该方法利用新陈代谢原理建立等维新息GM(1,1)模型,其在线辨识参数较少,避免了Diophantine方程和逆矩阵的在线求解,从而减少了计算量,提高了网络控制系统的实时性。倒立摆网络控制系统的仿真实验表明了所提方法的有效性。 相似文献
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在视觉信息用于连续反馈中,人们提出了基于视觉的伺服控制形式,对视觉传感器得到的图像进行快速处理,在尽量短的时间内给出反馈信息,构成系统的位置闭环控制。本文基于视频的倒立摆摆起控制,提供了一个视觉反馈倒立摆摆杆位置来控制的途径。文中对视频采集系统和软件设计进行了详细介绍,并给出了实际效果图。 相似文献