Missile Guidance Law Based on Extended State Observer

Zhu, Zheng; Dong, Xu; Liu, Jingmeng; Xia, Yuanqing

doi:10.1109/tie.2012.2232254

Cited by 147 publications

(89 citation statements)

References 24 publications

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“…And it just includes the information of system's input and output. Thereby, it has been widely used in many systems, such as missile control system, 22 optical system, 23 and other high-precision occasions. 24 Therefore, the double ESOs are chosen to estimate the friction states in the inner speed loop and in the outer speed loop.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Double speed loops control for high-precision position tracking of position-controlled actuators involving a harmonic drive reducer

Cai

Huang

Tang

et al. 2016

Advances in Mechanical Engineering

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In this article, a kind of position control method based on double speed closed loops is proposed to reduce turning error and nonlinear dead zone, which are caused by the flexibility and nonlinear friction in harmonic drive system. The speed loop of motor side is the inner loop and the speed loop of load side is the outer loop. Besides, the robustness performances of double speed loops and single speed loop are analyzed in theory, respectively. And it is stated that the performance of double speed loops is better than the performance of single speed loop. Furthermore, to further reduce the turning error and enhance the precision of system, the article puts forward applying double proportional-integral controllers with double extended state observers in the two speed loops. Extended state observers can transform the nonlinear models into an approximate linear model and eliminate the nonlinear frictions in the system. Finally, a few comparative experimental results show that the proposed control method has better performance for restraining the nonlinear features and enhancing the precision of the harmonic drive system.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Double speed loops control for high-precision position tracking of position-controlled actuators involving a harmonic drive reducer

Cai

Huang

Tang

et al. 2016

Advances in Mechanical Engineering

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“…The choice of 2 0; 1=2 À Á aims to make ' ¼ 1 À À Á = > 1, and therefore the error bounds can be tuned arbitrarily small since " 2 0; 1 ð Þ. Furthermore, different from some existing observers, [4][5][6][7][8][9][10]15,16) where only the target maneuvers or the LOS angular rate can be estimated, the proposed observer, Eq. (12), can synchronously estimate the lumped uncertainty and LOS angular rate from LOS angle measurement in a finite time.…”

Section: Homogenous Observer Designmentioning

confidence: 99%

“…To this end, it is of prime importance to design a high-performance observer to accurately estimate target maneuvering. Based on a suitable dynamics model, several feasible estimation algorithms have been designed and inserted in guidance loops as target maneuvering estimation blocks, such as time-delay control, 4) linear disturbance observer, 5,6) inertial-delay control, 7) extended state observer, 8) finite-time convergence disturbance observer 9) and references therein.…”

Section: Introductionmentioning

confidence: 99%

Homogenous Observer-Based Second-Order Sliding Mode Guidance Law

Lin

Wang

2016

Trans. Japan Soc. Aero. S Sci.

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A new homogenous observer-based finite-time convergent guidance law is proposed to intercept maneuvering targets without line-of-sight (LOS) angular rate information. The presented formulation is obtained via a combination of homogenous theory and second-order sliding mode (SOSM) method. Different from some existing observers, the proposed algorithm can estimate the lumped uncertainty and the LOS angular rate in an integrated manner. By virtue of the principle of SOSM, the undesired chattering is mitigated significantly without any sacrifice in performance. Detailed stability shows that the LOS angular rate can be stabilized in a small region around zero in finite time. Numerical simulations with some comparisons are carried out to demonstrate the superiority of the proposed method.

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“…The main feature is that the ESO can not only estimate the unmeasured system states but also observe the unknown disturbances. The ESO has been widely applied in many control fields [35][36][37][38][39]. In [40], an ESO was employed to estimate mismatched disturbances of power converter systems.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Barrier Control for Nonlinear Servomechanisms with Friction Compensation

Wang

Gao

et al. 2018

Complexity

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This paper proposes an adaptive barrier controller for servomechanisms with friction compensation. A modified LuGre model is used to capture friction dynamics of servomechanisms. This model is incorporated into an augmented neural network (NN) to account for the unknown nonlinearities. Moreover, a barrier Lyapunov function (BLF) is utilized to each step in a backstepping design procedure. Then, a novel adaptive control method is well suggested to ensure that the full-state constraints are within the given boundary. The stability of the closed-loop control system is proved using Lyapunov stability theory. Comparative experiments on a turntable servomechanism confirm the effectiveness of the devised control method.

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Missile Guidance Law Based on Extended State Observer

Cited by 147 publications

References 24 publications

RETRACTED: Double speed loops control for high-precision position tracking of position-controlled actuators involving a harmonic drive reducer

RETRACTED: Double speed loops control for high-precision position tracking of position-controlled actuators involving a harmonic drive reducer

Homogenous Observer-Based Second-Order Sliding Mode Guidance Law

Adaptive Barrier Control for Nonlinear Servomechanisms with Friction Compensation

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