A novel fast model predictive control with actuator saturation for large-scale structures

Peng, Haijun; Li, Fēi; Zhang, Sheng

doi:10.1016/j.compstruc.2017.03.014

Cited by 29 publications

(10 citation statements)

References 47 publications

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“…To solve the DMPC problem, the subsystem prediction model ( 5) should be discretized in the time domain; then the state evolution can be predicted by the discrete convolution integral [30]. However, this discretization approach involves considerable off-line computation of matrix exponentials, especially for a large-scale system [31]. Thus, to improve the computational efficiency, an explicit Newmark-β algorithm is applied to discretize the subsystem (3).…”

Section: A Discretization By the Explicit Newmark-β Methodsmentioning

confidence: 99%

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A Physics-Guided Coordinated Distributed MPC Method for Shape Control of an Antenna Reflector

Peng

Song

et al. 2022

IEEE Trans. Cybern.

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Active shape control for an antenna reflector is a significant procedure used to compensate the impacts for a complicated space environment. In this paper, a physics-guided distributed model predictive control (DMPC) framework for reflector shape control with input saturation is proposed. First, guided by the actual physical characteristics, an overall structural system is decomposed into multilevel subsystems with the help of a so-called substructuring technique. For each subsystem, a prediction model with information interaction is discretized by an explicit Newmark-β method. Then, to improve the systemwide control performance, a coordinator among all the subsystems is designed in an iterative fashion. The input saturation constraints are addressed by transforming the original problem into a linear complementarity problem (LCP). Finally, by solving the LCP, the input trajectory can be obtained. The performance of the proposed DMPC algorithm is validated through an experiment on the shape control of an antenna reflector structure.

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Section: A Discretization By the Explicit Newmark-β Methodsmentioning

confidence: 99%

“…Performing an iterative calculation of the recurrence formula (29), all the future dynamic responses can be expressed by the predictive initial state and control inputs, given as (31) where the subscript "i" denotes the i th subsystem, superscripts "k" and "l" denote the predictive time step, and…”

Section: A Discretization By the Explicit Newmark-β Methodsmentioning

confidence: 99%

A Physics-Guided Coordinated Distributed MPC Method for Shape Control of an Antenna Reflector

Peng

Song

et al. 2022

IEEE Trans. Cybern.

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“…Monolithic mirror with large diameter is avoided, offers the advantages of achievable manufacturing process and allowable packaging configurations. On the other hand, there is added difficulty in accurately deploying and phasing individual mirror segments to achieve a phased primary mirror with desirable optical quality [13], [15], [16]. The additional actuation and control systems are required for each segment.…”

Section: Introductionmentioning

confidence: 99%

One Novel Distributed Space Telescope With Payload Formation

Liu

Shen

2020

IEEE Access

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Large aperture space technology is critical for next-step astrophysics missions with high resolution requirement. The distributed telescope has been proven as an appealing solution to break the technical limitation in obtaining large apertures. However, the stringent interference imaging condition puts forward extremely high control accuracy requirement on the distributed telescope which is still a challenge task and need to be further studied. This paper thus presents one distributed space telescope with payload formation by synthesizing the non-contact electromagnetic actuators. The distributed optical apertures are connected by using the deployed mechanical structure while the non-contact actuators are further employed for high precision payload formation. Large equivalent aperture is obtained due to the achievable long baseline configuration, in addition, the ultra-high control accuracy of the distributed telescope is guaranteed. The dynamics modeling and the corresponding control strategy are also provided. The effectiveness of the proposed distributed space telescope is evaluated using simulation studies. INDEX TERMS Astrophysical investigation, distributed telescope, interference imaging, payload formation.

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“…Moreover, interesting research branches of LCPs include, just to mention a few, the robust version in the presence of uncertain data [26], which was motivated by robust optimization; properties of the solution map of a parametric LCP [7], which employed powerful tools from variational analysis; and various algorithms for solving LCPs [5,10,15]. Also, many works encountered or dealt with large scale LCPs, e. g., see [4,16,18,23].…”

Section: Introductionmentioning

confidence: 99%