Adaptive Event-Triggered Control of Uncertain Nonlinear Systems Using Intermittent Output Only

Zhang, Zhirong; Chen, Wen; Xing, Lantao; Song, Yongduan

doi:10.1109/tac.2021.3115435

Cited by 73 publications

(46 citation statements)

References 21 publications

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“…These results verify the effectiveness of the proposed method and it can be clearly seen that the control performance is improved on the basis of existing methods. Tracking Error z1(t) in this paper z1(t) in [5] z1(t) in [11] Fig. 5.…”

Section: Time-varying Feedback Based Controllermentioning

confidence: 74%

“…This is particularly true when system order increases, because at each step of design, the time derivatives of virtual control signals α i (i = 1, • • • , n − 1) are required in the next step, thereby u(t) requires the first-order time derivative of α n−1 , which requires the second-order time derivative of α n−2 , and so on, rendering the analytical computation of the repetitive derivative of the virtual control quite involved. Several efforts, such as dynamic surface control (DSC) [2]- [5], command filtered backstepping [6], [7], and neural networks/fuzzy logic systems approximation [20]- [23] have been made in alleviating such complexity.…”

Section: Introductionmentioning

confidence: 99%

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Backstepping Design Embedded With Time-Varying Command Filters

Song¹

2022

Preprint

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If embedded with command filter properly, the implementation of backstepping design could be dramatically simplified. In this paper, we introduce a command filter with time-varying gain and integrate it with backstepping design, resulting in a new set of backstepping control algorithms with low complexity even for high-order strict-feedback systems. Furthermore, with the aid of "softening" sign function based compensator, zero-error output tracking is ensured while at the same time maintaining prescribed transient performance. Numerical simulation is carried out to verify the effectiveness and benefits of the proposed method.

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Section: Time-varying Feedback Based Controllermentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Backstepping Design Embedded With Time-Varying Command Filters

Song¹

2022

Preprint

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“…Remark 3. To see the novelty of the proposed control method, it is worth making the following comments: i) The proposed distributed scheme is based upon the networked strict-feedback systems with directed communication and state-triggering setting, which includes the existing results in [10], [19], [20] as special cases; ii) Different from the methods in [8], [10], [19], where the system uncertainties must be parametric, the agent model considered here is non-identical and in strict-feedback form with mismatched and nonparametric uncertainties; and iii) Unlike the results in [10], [19], the communication regarding all states is executed via an event-based discontinuous way in this work, which saves both communication and energy resources.…”

Section: B Controller Designmentioning

confidence: 99%

“…The work in [6] further considers a class of nonlinear systems in the framework of event-triggered control, while the input-to-state stability (ISS) condition is required. Such limitation is successfully removed in [7], [8] by developing some event-triggered adaptive control algorithms based on the backstepping technique. However, the results in [4]- [8] are only applicable for single nonlinear systems, albeit there exist a large of engineering systems that are literally networked.…”

Section: Introductionmentioning

confidence: 99%

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Distributed Event-triggered Control of Networked Strict-feedback Systems Via Intermittent State Feedback

Sun¹,

Huang²,

Song³

2022

Preprint

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It poses technical difficulty to achieve stable tracking even for single mismatched nonlinear strict-feedback systems when intermittent state feedback is utilized. The underlying problem becomes even more complicated if such systems are networked with directed communication and state-triggering setting. In this work, we present a fully distributed neuroadaptive tracking control scheme for multiple agent systems in strict-feedback form using triggered state from the agent itself and the triggered states from the neighbor agents. To circumvent the non-differentiability of virtual controllers stemming from state-triggering, we first develop a distributed continuous control scheme under regular state feedback, upon which we construct the distributed event-triggered control scheme by replacing the states in the preceding scheme with the triggered ones. Several useful lemmas are introduced to allow the stability condition to be established with such replacement, ensuring that all the closed-loop signals are semi-globally uniformly ultimately bounded (SGUUB), with the output tracking error converging to a residual set around zero. Besides, with proper choices of the design parameters, the tracking performance in the mean square sense can be improved. Numerical simulation verifies the benefits and efficiency of the proposed method.

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Adaptive backstepping event‐triggered attitude tracking fault‐tolerant control for spacecraft systems

Sun

Zhu

Hou

2023

Adaptive Control & Signal

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SummaryThis article is dedicated to study the problem of attitude tracking fault‐tolerant control for fractionated spacecraft via wireless communication. The practical case is that the spacecraft system always subject to external disturbances, uncertain inertia parameters, and even unknown actuator faults. Under the backstepping control scheme framework, an adaptive attitude tracking fault‐tolerant controller is constructed, where the triggering strategy is set not only in the sensor‐to‐controller channel, but also in the controller‐to‐actuator channel. Hence, continuous communication and Zeno phenomenon are successfully avoided. Then, a fuzzy‐logic system is used to deal with system parameter uncertainties and adaptive control schemes are constructed to estimate unknown parameters. By using Lyapunov function theory, the uniform ultimate boundedness of the closed‐loop system is proved. Finally, the validity of the developed method is demonstrated via simulation results.

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Adaptive Event-Triggered Control of Uncertain Nonlinear Systems Using Intermittent Output Only

Cited by 73 publications

References 21 publications

Backstepping Design Embedded With Time-Varying Command Filters

Backstepping Design Embedded With Time-Varying Command Filters

Distributed Event-triggered Control of Networked Strict-feedback Systems Via Intermittent State Feedback

Adaptive backstepping event‐triggered attitude tracking fault‐tolerant control for spacecraft systems

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