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Disturbance observer-based event-triggered underactuated control for singularly perturbed PDE-ODE systems
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DOI：10.1080/00207179.2025.2575062.png)
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Abstract
En 中文
This article presents a disturbance observer-based adaptive event-triggered underactuated control scheme for singularly perturbed coupled systems subject to space-time-varying disturbance. Initially, the considered nonlinear partial differential equation-ordinary differential equation (PDE-ODE) systems are linearised by Takagi-Sugeno fuzzy rules and transformed into an integrated augmented system to facilitate system's analysis. Then, a singular perturbation theory is considered to analyse the multi-time scales phenomenon that is often neglected in existing work. Subsequently, a space-time-varying disturbance is considered to model the external system disturbance, and a disturbance observer and a composite observer are designed to estimate the unknown disturbance and the system's state. In addition, a variable-threshold adaptive event-triggered mechanism is constructed to flexibly reduce the network communication burden, and an underactuated control strategy is proposed to save the system control cost. Finally, simulations for a hypersonic rocket car demonstrate that the proposed controller and the disturbance observer are effective.
Keywords:
Adaptive event-triggered mechanism
disturbance observer
space-time-varying disturbance
singularly perturbed PDE-ODE systems
underactuated control
Journal
I
IF:
1.6
Papers:
85
Citations:
0
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