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Artículos de revistas sobre el tema "Disturbance attenuation"

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Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 31 de enero de 2023

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1

Martínez-García, Juan Carlos. "Combining Disturbance Decoupling with Disturbance Attenuation". IFAC Proceedings Volumes 31, n.º 18 (julio de 1998): 697–702. http://dx.doi.org/10.1016/s1474-6670(17)42072-6.

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2

Yi, Yang, Lubing Xu, Hong Shen y Xiangxiang Fan. "Disturbance observer-based L1 robust tracking control for hypersonic vehicles with T-S disturbance modeling". International Journal of Advanced Robotic Systems 13, n.º 6 (16 de noviembre de 2016): 172988141667111. http://dx.doi.org/10.1177/1729881416671117.

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This article concerns a disturbance observer-based L1 robust anti-disturbance tracking algorithm for the longitudinal models of hypersonic flight vehicles with different kinds of unknown disturbances. On one hand, by applying T-S fuzzy models to represent those modeled disturbances, a disturbance observer relying on T-S disturbance models can be constructed to track the dynamics of exogenous disturbances. On the other hand, L1 index is introduced to analyze the attenuation performance of disturbance for those unmodeled disturbances. By utilizing the existing convex optimization algorithm, a disturbance observer-based proportional-integral-controlled input is proposed such that the stability of hypersonic flight vehicles can be ensured and the tracking error for velocity and altitude in hypersonic flight vehicle models can converge to equilibrium point. Furthermore, the satisfactory disturbance rejection and attenuation with L1 index can be obtained simultaneously. Simulation results on hypersonic flight vehicle models can reflect the feasibility and effectiveness of the proposed control algorithm.

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3

Hagiwara, Takaaki, Kou Yamada, Iwanori Murakami, Yoshinori Ando, Shun Matsuura y Satoshi Aoyama. "An Application of the Modified PID Control System for Heat Flow Experiment". International Journal of Automation Technology 4, n.º 5 (5 de septiembre de 2010): 469–76. http://dx.doi.org/10.20965/ijat.2010.p0469.

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The Proportional-Integral-Derivative (PID) controller structure is the most widely used in industrial applications thanks to its structural simplicity and applicability in solving practical control problems. It is not, however, almighty. Yamada and Hagiwara proposed design modified PID controllers to make control for any plant stable and make admissible sets of P, I, and D parameters mutually independent. Applying modified PID control to practical plants requires that the influence of disturbance in the plant be considered. In many cases, this disturbance is unknown, making it difficulty to attenuate. Although designs have been proposed for modified PID control to attenuate unknown disturbances, little has been done in examining the attenuation of unknown disturbances. We demonstrate the effectiveness of modified PID control in attenuating unknown disturbances for temperature control in heat flow experiments.

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4

Xiong, Ping, Han Lin He y Jian Jun Tu. "Disturbance Attenuating Control for Cellular Neural Networks with Time-Varying Delays". Applied Mechanics and Materials 278-280 (enero de 2013): 1242–46. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.1242.

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The problem of disturbance attenuating controller design for delayed cellular neural networks (DCNNs) is considered. Via combining four different states cases in DCNNs and applying Razumikhin function analysis, a feedback control law in the form of linear matrix inequality (LMI) is derived for guaranteeing disturbance attenuation of the closed systems. Finally, a numerical example of DCNNs is given to indicate the effectiveness of the proposed disturbance attenuating control.

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5

Liu, H., L. Guo y Y. Zhang. "Composite attitude control for flexible spacecraft with simultaneous disturbance attenuation and rejection performance". Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 226, n.º 2 (9 de septiembre de 2011): 154–61. http://dx.doi.org/10.1177/0959651811415757.

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In this paper, a composite attitude control approach for orbiting spacecraft with rigid central hubs and flexible appendages is presented. The established attitude control model consists of the vibration modes excited by the rigid body, the space environment disturbances, the measurement noises, and the model uncertainty. The model is formulated into a dynamic system with two types of disturbance inputs. A composite control law with the simultaneous disturbance attenuation and rejection performance is presented for the flexible spacecraft system subject to multiple disturbances. The disturbance-observer-based control is designed for feedforward compensation of the elastic vibration. The H∞ state-feedback controller is designed to perform the robust attitude control in the presence of the space environment disturbances, measurement noises, and the model uncertainty. Numerical simulations show that the performance of the attitude control systems can be improved by combining the disturbance observer with H∞ state-feedback control.

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6

Muresan, Cristina I., Isabela R. Birs, Dana Copot, Eva H. Dulf y Clara M. Ionescu. "Fractional-Order PI Controller Design Based on Reference–to–Disturbance Ratio". Fractal and Fractional 6, n.º 4 (15 de abril de 2022): 224. http://dx.doi.org/10.3390/fractalfract6040224.

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The presence of disturbances in practical control engineering applications is unavoidable. At the same time, they drive the closed-loop system’s response away from the desired behavior. For this reason, the attenuation of disturbance effects is a primary goal of the control loop. Fractional-order controllers have now been researched intensively in terms of improving the closed-loop results and robustness of the control system, compared to the standard integer-order controllers. In this study, a novel tuning method for fractional-order controllers is developed. The tuning is based on improving the disturbance attenuation of periodic disturbances with an estimated frequency. For this, the reference–to–disturbance ratio is used as a quantitative measure of the control system’s ability to reject disturbances. Numerical examples are included to justify the approach, quantify the advantages and demonstrate the robustness. The simulation results provide for a validation of the proposed tuning method.

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7

Djouadi, S. M. y G. Zames. "On optimal robust disturbance attenuation". Systems & Control Letters 46, n.º 5 (agosto de 2002): 343–51. http://dx.doi.org/10.1016/s0167-6911(02)00148-2.

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8

KNOBLOCH, HANS W. "DISTURBANCE ATTENUATION IN CONTROL SYSTEMS". International Game Theory Review 07, n.º 03 (septiembre de 2005): 261–83. http://dx.doi.org/10.1142/s0219198905000521.

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The paper deals with standard mathematical models for nonlinear affine control systems with two (vector-valued) inputs u (=control) and w (unknown except for a bound for the sup-norm). Interpretation of this scenario and its wide range of applications (in control and differential game theory): See the introduction. The main result of the paper is the presentation of a dissipation equality which seems to be new and which is the result of a special control strategy (discretized state feedback, see the introduction). Combination with Lyapunov techniques leads to a concrete proposal for stabilizing disturbed control system. The mathematical background — which is worked out in detail — amounts to an explicit integration of the Hamilton-Jacobi partial differential equation via the method of characteristics.

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9

Pagilla, Prabhakar R., Ramamurthy V. Dwivedula, Yongliang Zhu y Lokukaluge P. Perera. "Periodic Tension Disturbance Attenuation in Web Process Lines Using Active Dancers". Journal of Dynamic Systems, Measurement, and Control 125, n.º 3 (1 de septiembre de 2003): 361–71. http://dx.doi.org/10.1115/1.1590678.

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This paper investigates the role of active dancers in attenuation of web tension disturbances in a web process line. A general structure of the active dancer is considered; governing equations for web spans upstream and downstream to the dancer roller are developed. A structural limitation that facilitates efficient design of the active dancer system for web tension disturbance attenuation is derived and discussed based on the developed model. An open-architecture experimental web platform is developed for conducting real-time control experiments using the active dancer system. The active dancer system model is experimentally identified using the standard system identification techniques available in literature. Three types of control designs were investigated for the active dancer system: a proportional-integral-derivative controller, an internal model based controller, and a linear quadratic optimal controller. Data collected from a series of experiments using the three control designs validate the usefulness of the active dancers in attenuating web tension disturbances in a web process line. A representative sample of the experimental data is presented and discussed.

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10

Black, R. A. y T. V. How. "Attenuation of Flow Disturbances in Tapered Arterial Grafts". Journal of Biomechanical Engineering 111, n.º 4 (1 de noviembre de 1989): 303–10. http://dx.doi.org/10.1115/1.3168383.

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Flow disturbances in tapered arterial grafts of angles of taper between 0.5 and 1.0 deg were measured in vitro using a pulsed ultrasound Doppler velocimeter. The increase in transition Reynolds numbers with angle of taper and axial distance was determined for steady flow. The instantaneous centerline velocities were measured distal to a 50 percent area stenosis (as a model of a proximal anastomosis), in steady and pulsatile flow, from which the disturbance intensities were calculated. A significant reduction in post-stenotic disturbance intensity was recorded in the tapered grafts, relative to a conventional cylindrical graft. In pulsatile flow with a large backflow component, however, there was an increase in disturbance intensity due to diverging flow during flow reversal. This was observed only in the 1.0 deg tapered graft. These findings indicate that taper is an important consideration in the design of vascular prostheses.

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11

He, Shuaipeng, Chuanlin Zhang, Ning Yang y Hui Li. "Exquisite disturbance attenuation control for a rotary inverted pendulum". Transactions of the Institute of Measurement and Control 40, n.º 3 (7 de octubre de 2016): 812–18. http://dx.doi.org/10.1177/0142331216667809.

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This paper investigates the problem of active disturbance attenuation control for a rotary inverted pendulum system. A nonlinear disturbance observer is first constructed to estimate the lumped disturbances, and then a feedback domination technique is integrated to handle the nonlinearities in a novel step-by-step way. Hence an exquisite composite controller can be constructed with strong robustness while the nominal control performance can be maintained. By utilizing a recursive stability analysis based on a Lyapunov function, the effectiveness of the proposed controller is assured. Numerical simulation results demonstrate the effectiveness of the proposed algorithm.

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12

Wang, Zhen, Zhong Wu, Lijun Li y Jun Yuan. "A composite anti-disturbance control scheme for attitude stabilization and vibration suppression of flexible spacecrafts". Journal of Vibration and Control 23, n.º 15 (9 de diciembre de 2015): 2470–77. http://dx.doi.org/10.1177/1077546315617632.

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Abstract: There exist multiple disturbances resulting from the structural vibrations of flexible appendages, unknown external and internal disturbances, and parameter uncertainties, which affect the attitude control performance seriously. To enhance the disturbance attenuation performance and vibration suppression ability, a composite anti-disturbance control scheme (CADCS) based on disturbance observer is proposed for attitude stabilization and vibration reduction of flexible spacecraft. The CADCS combines a composite disturbance observer (CDO) and a PD controller with feedforward. The multiple disturbances are equivalent to slowly varying disturbance and harmonic disturbance. The CDO can estimate two types of disturbance and compensate for them through feedforward. The PD controller realizes the asymptotic convergence by compensating the disturbance from CDO. The CADCS based on CDO and PD controller is not only simple and easy to realize, but also yields better vibration suppression and anti-disturbance performance. Simulation results of a certain spacecraft demonstrate the effectiveness of the proposed CADCS.

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13

Cao, Songyin y Jianzhong Qiao. "Robust Fault Tolerant Control for a Class of Time-Delay Systems with Multiple Disturbances". Mathematical Problems in Engineering 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/372957.

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A robust fault tolerant control (FTC) approach is addressed for a class of nonlinear systems with time delay, actuator faults, and multiple disturbances. The first part of the multiple disturbances is supposed to be an uncertain modeled disturbance and the second one represents a norm-bounded variable. First, a composite observer is designed to estimate the uncertain modeled disturbance and actuator fault simultaneously. Then, an FTC strategy consisting of disturbance observer based control (DOBC), fault accommodation, and a mixedH2/H∞controller is constructed to reconfigure the considered systems with disturbance rejection and attenuation performance. Finally, simulations for a flight control system are given to show the efficiency of the proposed approach.

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14

Li, Hongda, Yuan Wang, Zhiwei Shi y Min Chang. "An internal model frame-based disturbance attenuation control scheme for quad-rotors transporting unknown payloads". Transactions of the Institute of Measurement and Control 41, n.º 14 (9 de mayo de 2019): 3991–4000. http://dx.doi.org/10.1177/0142331219842323.

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The path following control of quad-rotors transporting uncertain payloads, whose control system is featured with time-variation, high nonlinearity and strong couplings among state variables and inputs, is investigated. Targeting this, an internal model frame-based disturbance attenuation control scheme that requires only rough model information is proposed. Firstly, a novel disturbance estimator (DE) for general single-input-single-output (SISO) system is proposed. Secondly, the DE proposed is applied in transporting unknown payloads by quad-rotors, to estimate the disturbances caused by the payloads for feedback compensation. Lastly, the control scheme based on internal model frame is designed to further reduce the remaining disturbances from disturbance estimation error.

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15

Cheng, Cheng‐Fa. "Decentralized disturbance attenuation for interconnected systems". Journal of the Chinese Institute of Engineers 22, n.º 1 (enero de 1999): 101–8. http://dx.doi.org/10.1080/02533839.1999.9670447.

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16

Busawon, Krishna K. y Pousga Kabore. "Disturbance attenuation using proportional integral observers". International Journal of Control 74, n.º 6 (enero de 2001): 618–27. http://dx.doi.org/10.1080/00207170010025249.

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17

Owen, J. G. y G. Zames. "Duality theory of robust disturbance attenuation". Automatica 29, n.º 3 (mayo de 1993): 695–705. http://dx.doi.org/10.1016/0005-1098(93)90064-z.

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18

Jank, Gerhard. "Disturbance Attenuation in Hyperbolic 2D-systems". Multidimensional Systems and Signal Processing 17, n.º 2-3 (julio de 2006): 257–70. http://dx.doi.org/10.1007/s11045-006-7456-x.

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19

Battistelli, Giorgio, Daniele Mari, Daniela Selvi, Alberto Tesi y Pietro Tesi. "Switching Control for Adaptive Disturbance Attenuation". IFAC Proceedings Volumes 47, n.º 3 (2014): 1483–88. http://dx.doi.org/10.3182/20140824-6-za-1003.01556.

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20

Wang, Jiqiang, Hong Yue y Georgi Dimirovski. "Disturbance attenuation in linear systems revisited". International Journal of Control, Automation and Systems 15, n.º 4 (20 de julio de 2017): 1611–21. http://dx.doi.org/10.1007/s12555-016-0132-5.

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21

Jo, Nam Hoon, Chanyoung Jeon y Hyungbo Shim. "Noise Reduction Disturbance Observer for Disturbance Attenuation and Noise Suppression". IEEE Transactions on Industrial Electronics 64, n.º 2 (febrero de 2017): 1381–91. http://dx.doi.org/10.1109/tie.2016.2618858.

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22

Li, Yuanyuan y Yunliang Wei. "Composite control with observers for a class of stochastic systems with multiple disturbances". Discrete and Continuous Dynamical Systems - S 15, n.º 7 (2022): 1859. http://dx.doi.org/10.3934/dcdss.2022019.

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<p style='text-indent:20px;'>In this paper, the composite anti-disturbances control problem is considered for a class of stochastic systems with multiple disturbances. The states of the system are assumed to be unavailable. A state observer and a disturbance observer are constructed to estimate the states and the matched disturbance respectively. Based on the estimated values of state observer and disturbance observer, a non-fragile composite controller is designed to achieve disturbance attenuation and rejection. By means of the technique of the disturbance compensation control and stochastic control theory, some sufficient conditions are obtained to guarantee that the closed-loop system is asymptotically bounded in mean square or asymptotically stable in probability. Finally, a numerical example is given to verify the validity of the obtained results.</p>

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23

Wang, Zheng y Jianping Yuan. "Non-linear disturbance observer-based adaptive composite anti-disturbance control for non-linear systems with dynamic non-harmonic multisource disturbances". Transactions of the Institute of Measurement and Control 40, n.º 12 (11 de septiembre de 2017): 3458–65. http://dx.doi.org/10.1177/0142331217721967.

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In this paper, an adaptive composite anti-disturbance control structure is constructed for a class of non-linear systems with dynamic non-harmonic multisource disturbances. The key point of this paper is that a kind of non-harmonic disturbance, which has non-linear internal dynamics and complex features, is involved. A non-linear exogenous system is employed to describe the dynamic non-harmonic disturbances and several useful assumptions are introduced. By introducing a non-linear damping term, a novel adaptive non-linear disturbance observer is constructed. Based on the disturbance/uncertainty estimation and attenuation (DUEA) schemes, a composite anti-disturbance control structure is synthesized. Meanwhile, a new sufficient condition is derived and the stability of the closed-loop system is proved. Several illustrative examples are employed to demonstrate the effectiveness of the proposed method.

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24

Dong, Lewei, Xinjiang Wei y Huifeng Zhang. "Anti-disturbance control based on nonlinear disturbance observer for a class of stochastic systems". Transactions of the Institute of Measurement and Control 41, n.º 6 (8 de agosto de 2018): 1665–75. http://dx.doi.org/10.1177/0142331218787608.

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In engineering, there exist lots of nonlinear disturbance dynamics, which can be described by nonlinear exogenous systems. The current stochastic linear disturbance observer is conservative and is not applicable for nonlinear disturbance dynamics. This paper studies a class of stochastic systems with multiple disturbances, including white noise and disturbances modelled by a nonlinear exogenous system. To estimate the disturbance with nonlinear dynamics, a stochastic nonlinear disturbance observer is proposed. Based on the observer, a nonlinear disturbance observer-based disturbance attenuation control (NDOBDAC) scheme is constructed such that the composite closed-loop system is asymptotically mean-square bounded. According to the simulation example, the state responses of the system diverge in the absence of control, but it tends to be [Formula: see text] under NDOBDAC, which demonstrates the effectiveness of the proposed scheme. In addition, the anti-disturbance control accuracy of NDOBDAC approximately improves [Formula: see text] times compared with [Formula: see text] control and active disturbance rejection control (ADRC). The simulation results demonstrate the feasibility and effectiveness of the proposed scheme.

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25

Zeng, Sheng. "Adaptive Speed Control Design for Brushed Permanent Magnet DC Motor Based on Worst-Case Analysis Approach". Mathematical Problems in Engineering 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/698050.

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This paper presents the adaptive controller design for brushed permanent magnet DC motor used in velocity-tracking applications based on worst-case approach. We first formulate the robust adaptive control problem as a nonlinearH∞-control problem under imperfect state measurement, and then solve it using game-theoretic approach. The controller guarantees the boundedness of closed-loop signals with bounded exogenous disturbances, and achieves desired disturbance attenuation level with respect to the unmeasured exogenous disturbance inputs and the measured disturbance inputs. The strong robustness properties are illustrated by a simulation example.

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26

Chu, Zhaobi, Songgang Zhou, Min Zhu y Hua Li. "Finite-time trajectory control for a quadrotor aircraft using disturbance observer". International Journal of Advanced Robotic Systems 17, n.º 2 (1 de marzo de 2020): 172988142090384. http://dx.doi.org/10.1177/1729881420903847.

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In this article, we investigate the problem of finite-time trajectory tracking control for a quadrotor aircraft with unknown external disturbances. To improve convergence rate and disturbance rejection performance, a new composite controller is proposed by integrating finite-time control design and disturbance estimation attenuation technique. Explicit Lyapunov function is given to ensure the finite-time stability of the closed-loop control system. Numerical simulations also show the effectiveness of the proposed method.

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27

Altun, Yusuf. "The road disturbance attenuation for quarter car active suspension system via a new static two-degree-of-freedom design". An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 7, n.º 2 (13 de junio de 2017): 142–48. http://dx.doi.org/10.11121/ijocta.01.2017.00458.

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The main aim of this paper is to attenuate the effects of the road disturbance on the quarter-car active suspension system (ASS) for the passenger comfort by using design. Therefore, a new static disturbance compensator is proposed by using linear matrix inequality method such that the disturbance compensator and feedback controller are simultaneously designed for the disturbances in the linear time-invariant systems, which are measurable or predictable. They have static structure, and the disturbance compensator is designed on the feedforward path. The design is applied against the road disturbance affecting the quarter car ASS. The effectiveness of the design is demonstrated with the simulations.

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28

Ma, Guoqi y Prabhakar R. Pagilla. "Event-triggered equivalent-input-disturbance estimation and control for disturbance attenuation". IFAC Journal of Systems and Control 16 (junio de 2021): 100137. http://dx.doi.org/10.1016/j.ifacsc.2021.100137.

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29

Leuschke, Rainer y Brian C. Fabien. "Disturbance Attenuation Using a dc Motor for Radial Force Actuation in a Rotordynamic System". Journal of Dynamic Systems, Measurement, and Control 129, n.º 6 (18 de enero de 2007): 804–12. http://dx.doi.org/10.1115/1.2789471.

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This paper presents a technique for attenuating the external disturbances acting on the rotor of a prototype flywheel energy storage device. The approach uses a three-phase axial flux brushless dc motor to simultaneously produce a torque and a radial force. This is accomplished by using two phases of the motor for torque generation, and one phase to produce the radial force. The paper develops a set of equations that can be used to predict the forces generated by the motor coils. These equations are used to implement a feedback control system to suppress the effects of external excitations. The nonlinear controller requires the velocity measurements and the angular displacement of the flywheel. The controller essentially adds damping to the system, and the constant feedback gains solve an optimization problem that involves a H∞ bound on the disturbance attenuation. The experimental results clearly demonstrate that the dc motor can be used to suppress unwanted radial vibrations due to external disturbances.

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30

Pang, Hongbo y Jun Zhao. "Adaptive feedback passivity-based disturbance attenuation for switched nonlinearly parameterized systems". Transactions of the Institute of Measurement and Control 39, n.º 12 (3 de junio de 2016): 1811–20. http://dx.doi.org/10.1177/0142331216649432.

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This paper investigates the adaptive feedback passification and disturbance attenuation problems for a class of switched nonlinearly parameterized systems. First, a state-dependent switching law and a set of adaptive feedback controllers with new control inputs are designed to render the resulting closed-loop system passive for a class of switched nonlinearly parameterized systems without external disturbance. Then, the new control inputs are designed to solve the disturbance attenuation problem. Second, a set of adaptive feedback controllers and a composite state-dependent switching law are designed to solve the adaptive feedback passivity-based disturbance attenuation problem for a class of cascaded switched nonlinearly parameterized systems. A numerical example shows the effectiveness of the proposed method.

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31

Nikoofard, Amirhossein, Tor Arne Johansen, Hessam Mahdianfar y Alexey Pavlov. "Design and Comparison of Constrained MPC With PID Controller for Heave Disturbance Attenuation in Offshore Managed Pressure Drilling Systems". Marine Technology Society Journal 48, n.º 2 (1 de marzo de 2014): 90–103. http://dx.doi.org/10.4031/mtsj.48.2.4.

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AbstractThis paper presents a constrained finite horizon model predictive control (MPC) scheme for regulation of the annular pressure in a well during managed pressure drilling from a floating vessel subject to heave motion. In addition to the robustness of a controller, how to deal with heave disturbances despite uncertainties in the friction factor and bulk modulus is investigated. The stochastic model describing sea waves in the North Sea is used to simulate the heave disturbances. The results show that the closed-loop simulation without disturbance has a fast regulation response, without any overshoot, and is better than a proportional-integral-derivative controller. The constrained MPC for managed pressure drilling shows further improved disturbance rejection capabilities with measured or predicted heave disturbance. Monte Carlo simulations show that the constrained MPC has a good performance to regulate set point and attenuate the effect of heave disturbance in case of significant uncertainties in the well parameter values.

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32

Medvedev, Alexander. "Disturbance Attenuation in Finite Spectrum Assignment Controllers". IFAC Proceedings Volumes 29, n.º 1 (junio de 1996): 1620–25. http://dx.doi.org/10.1016/s1474-6670(17)57900-8.

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33

Chichka, D. F. y J. L. Speyer. "A Disturbance Attenuation Approach to Adaptive Control". IFAC Proceedings Volumes 26, n.º 2 (julio de 1993): 207–12. http://dx.doi.org/10.1016/s1474-6670(17)48254-1.

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34

Rapaport, Alain y Alessandro Astolfi. "Practical L2 disturbance attenuation for nonlinear systems". Automatica 38, n.º 1 (enero de 2002): 139–45. http://dx.doi.org/10.1016/s0005-1098(01)00176-5.

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35

Medvedev, Alexander. "Disturbance attenuation in finite-spectrum-assignment controllers". Automatica 33, n.º 6 (junio de 1997): 1163–68. http://dx.doi.org/10.1016/s0005-1098(97)00019-8.

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36

He, Jian-Bo, Qing-Guo Wang y Tong-Heng Lee. "H∞ disturbance attenuation for state delayed systems". Systems & Control Letters 33, n.º 2 (febrero de 1998): 105–14. http://dx.doi.org/10.1016/s0167-6911(97)00114-x.

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37

Battistelli, Giorgio, Daniele Mari, Daniela Selvi, Alberto Tesi y Pietro Tesi. "Adaptive disturbance attenuation via logic-based switching". Systems & Control Letters 73 (noviembre de 2014): 48–57. http://dx.doi.org/10.1016/j.sysconle.2014.09.003.

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38

Mo, LiPo, YingMin Jia y ZhiMing Zheng. "Finite-time disturbance attenuation of nonlinear systems". Science in China Series F: Information Sciences 52, n.º 11 (noviembre de 2009): 2163–71. http://dx.doi.org/10.1007/s11432-009-0194-6.

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39

Kim, Kyung-Soo y Faryar Jabbari. "Disturbance attenuation via strictly positive real compensators". Journal of the Franklin Institute 340, n.º 6-7 (septiembre de 2003): 515–21. http://dx.doi.org/10.1016/j.jfranklin.2003.11.001.

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40

Chichka, D. F. y J. L. Speyer. "An adaptive controller based on disturbance attenuation". IEEE Transactions on Automatic Control 40, n.º 7 (julio de 1995): 1220–33. http://dx.doi.org/10.1109/9.400489.

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41

RAMAKER, R. A., J. MEDANIĆ y W. R. PERKINS. "Strictly proper projective controllers for disturbance attenuation". International Journal of Control 52, n.º 4 (octubre de 1990): 963–82. http://dx.doi.org/10.1080/00207179008953576.

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42

REZA MOHEIMANI, S. O., I. R. PETERSEN y H. R. POTA. "BROADBAND DISTURBANCE ATTENUATION OVER AN ENTIRE BEAM". Journal of Sound and Vibration 227, n.º 4 (noviembre de 1999): 807–32. http://dx.doi.org/10.1006/jsvi.1999.2389.

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43

Ding, Gang, Xunxian Wang y Zengjin Han. "H-? disturbance attenuation control of induction motor". International Journal of Adaptive Control and Signal Processing 14, n.º 2-3 (marzo de 2000): 223–44. http://dx.doi.org/10.1002/(sici)1099-1115(200003/05)14:2/3<223::aid-acs580>3.0.co;2-5.

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44

Ando, Yoshinori, Tatsuya Sakanushi, Kou Yamada, Iwanori Murakami, Takaaki Hagiwara y Masahiko Kobayashi. "A Design Method for Two-Degree-of-Freedom Simple Multi-Period Repetitive Control Systems". Applied Mechanics and Materials 36 (octubre de 2010): 243–52. http://dx.doi.org/10.4028/www.scientific.net/amm.36.243.

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The multi-period repetitive (MPR) control system is a type of servomechanism for periodic reference inputs. Using MPR controllers, transfer functions from the reference input to the output and from the disturbance to the output of the MPR control system have infinite numbers of poles. To specify the input-output characteristic and the disturbance attenuation characteristic easily, Yamada and Takenaga proposed MPR control systems, named simple multi-period repetitive (simple MPR) control systems, where these transfer functions have finite numbers of poles. In addition, Yamada and Takenaga clarified the parameterization of all stabilizing simple MPR controllers. However, using the simple MPR repetitive controller by Yamada and Takenaga, we cannot specify the input-output characteristic and the disturbance attenuation characteristic separately. From the practical point of view, it is desirable to specify the input-output characteristic and the disturbance attenuation characteristic separately. The purpose of this paper is to propose the parameterization of all stabilizing two-degree-of-freedom (TDOF) simple MPR controllers that can specify the input-output characteristic and the disturbance attenuation characteristic separately.

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45

Tezcan, I. Egemen y Tamer Bas¸ar. "Disturbance Attenuating Adaptive Controllers for Parametric Strict Feedback Nonlinear Systems With Output Measurements". Journal of Dynamic Systems, Measurement, and Control 121, n.º 1 (1 de marzo de 1999): 48–57. http://dx.doi.org/10.1115/1.2802441.

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We present a systematic procedure for designing H∞-optimal adaptive controllers for a class of single-input single-output parametric strict-feedback nonlinear systems that are in the output-feedback form. The uncertain nonlinear system is minimum phase with a known relative degree and known sign of the high-frequency gain. We use soft projection on the parameter estimates to keep them bounded in the absence of persistent excitations. The objective is to obtain disturbance attenuating output-feedback controllers which will track a smooth bounded trajectory and keep all closed-loop signals bounded in the presence of exogenous disturbances. Two recent papers (Pan and Bas¸ar, 1996a; Marino and Tomei, 1995) addressed a similar problem with full state information, using two different approaches, and obtained asymptotically tracking and disturbance-attenuating adaptive controllers. Here, we extend these results to the output measurement case for a class of minimum phase nonlinear systems where the nonlinearities depend only on the measured output. It is shown that arbitrarily small disturbance attenuation levels can be obtained at the expense of increased control effort. The backstepping methodology, cost-to-come function based H∞ -filtering and singular perturbations analysis constitute the framework of our robust adaptive control design scheme.

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46

Niu, Dan, Xisong Chen, Xiaojun Wang y Xingpeng Zhou. "Composite disturbance rejection control for hydraulic classification". Transactions of the Institute of Measurement and Control 40, n.º 6 (15 de marzo de 2017): 1863–72. http://dx.doi.org/10.1177/0142331217693917.

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In the hydraulic classification, precise control for the flow rate of overflow water is vital to guarantee the uniformity and stability of the powder product size. Usually the multiple overflow tanks are supplied by a shared overflow pipeline, which gives rise to large coupling effects in the controls for the flow rates of multiple overflow tanks simultaneously. To solve this issue, it is necessary to keep the water pressure in the shared overflow pipeline accurately constant, which is not easy due to strong disturbances. Several control strategies have been proposed to control the constant water pressure. However, most of them (such as proportional-integral-derivative and model predictive control) reject disturbances just through feedback regulation and do not reject disturbances directly. This may cause poor control performances in the presence of strong disturbances. For improving the disturbance rejection performance, a control scheme based on proportional-integral-derivatives and disturbance observer is put forward in this paper. The scheme employs disturbance observer as feedforward compensation and a proportional-integral-derivative controller as feedback regulation. The disturbance rejection properties under both model mismatches and external disturbances are discussed. The test results illustrate that the proposed method can remarkably improve the disturbance attenuation property compared with the conventional proportional-integral-derivative method in the hydraulic classification process.

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47

Whalley, R. y M. Ebrahimi. "Closed-loop system disturbance recovery". Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 217, n.º 6 (1 de junio de 2003): 631–49. http://dx.doi.org/10.1243/095440603321919563.

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The regulation of linearized multivariable system models, following input set point and load disturbance changes, is considered. An inner and outer closed-loop control strategy is outlined, enabling targeted recovery rates, offset attenuation and low steady state interaction to be achieved. Proportional control and passive network compensation alone are employed. Gain ratio selection and outer loop tuning are exercised, ensuring thereby the confinement of output perturbations to low-frequency load disturbances and reference input changes. Application studies are presented for purposes of comparison.

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48

Rodríguez, Carlos, Ernesto Aranda-Escolástico, María Guinaldo, José Luis Guzmán y Sebastián Dormido. "Event–Based Feedforward Control of Linear Systems with input Time–Delay". International Journal of Applied Mathematics and Computer Science 29, n.º 3 (1 de septiembre de 2019): 541–53. http://dx.doi.org/10.2478/amcs-2019-0040.

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Abstract This paper proposes a new method for the analysis of continuous and periodic event-based state-feedback plus static feed-forward controllers that regulate linear time invariant systems with time delays. Measurable disturbances are used in both the control law and triggering condition to provide better disturbance attenuation. Asymptotic stability and L2-gain disturbance rejection problems are addressed by means of Lyapunov–Krasovskii functionals, leading to performance conditions that are expressed in terms of linear matrix inequalities. The proposed controller offers better disturbance rejection and a reduction in the number of transmissions with respect to other robust event-triggered controllers in the literature.

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49

Zhang, Haibo, Dayi Wang, Chunling Wei y Bing Xiao. "End-Effector Trajectory Tracking Control of Space Robot withL2Gain Performance". Mathematical Problems in Engineering 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/175342.

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This paper presents a novel solution to the control problem of end-effector robust trajectory tracking for space robot. External disturbance and system uncertainties are addressed. For the considered robot operating in free-floating mode, a Chebyshev neural network is introduced to estimate system uncertainties and external disturbances. An adaptive controller is then proposed. The closed-loop system is guaranteed to be ultimately uniformly bounded. The key feature of this proposed approach is that, by choosing appropriate control gains, it can achieve any given small level ofL2gain disturbance attenuation from external disturbance to system output. The tracking performance is evaluated through a numerical example.

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50

Wei, Xin-Jiang, Zhao-Jing Wu y Hamid Reza Karimi. "Disturbance observer-based disturbance attenuation control for a class of stochastic systems". Automatica 63 (enero de 2016): 21–25. http://dx.doi.org/10.1016/j.automatica.2015.10.019.

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