Prioritization schemes for reference and command governors

Kalabić, Uroš; Chitalia, Yash; Buckland, Julia; Kolmanovsky, Ilya

doi:10.23919/ecc.2013.6669212

Cited by 10 publications

(11 citation statements)

References 11 publications

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“…Several variants of the RG and CG schemes have been proposed in the literature, such as the Prioritized Reference Governor [132]. The Prioritized Reference Governor enforces hard constraints and it satisfies soft constraints in the order of priority.…”

Section: Nominal Case -Reference and Command Governorsmentioning

confidence: 99%

Reference and command governors for systems with constraints: A survey on theory and applications

2017

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Reference and command governors are add-on control schemes which enforce state and control constraints on pre-stabilized systems by modifying, whenever necessary, the reference. This paper surveys the extensive literature concerning the development of such schemes for linear and nonlinear systems. The treatment of unmeasured disturbances and parametric uncertainties is also detailed. Generalizations, including extended command governors, feedforward reference governors, reduced order reference governors, parameter governors, networked reference governors, and decentralized/distributed reference governors, are discussed. Practical applications of these techniques are presented and surveyed as well. A comprehensive list of references is included. Connections with related approaches, including model predictive control and input shaping, are discussed. Opportunities and directions for future research are highlighted.

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Section: Nominal Case -Reference and Command Governorsmentioning

confidence: 99%

Reference and command governors for systems with constraints: A survey on theory and applications

2017

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“…The other is the RG designed has a constrained domain of attraction that is not large enough. When steady violation occurs, prioritized reference governors can enforce over-limit constraints as soft constraints in the order of their priority so that if all constraints cannot be strictly met, slight violation of the soft constraints will be permitted [18]. The extended command governors use more degrees of freedom to find feasible solutions through optimization, which expands constrained domains of attraction by adding optimization parameters and inevitably increases the computational cost of the optimization problem [19].…”

Section: Introductionmentioning

confidence: 99%

Reference and Limit Governors for Limit Protection of Turbofan Engines

Pan

Qin

et al. 2019

Energies

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This paper proposes a novel architecture of limit protection including the references governors and limit governors and applies this architecture to limit protection in turbofan engines. References governors are designed as add-on schemes to a pre-stability engine control system that modifies reference commands to avoid constraints violation. Limit governors are proposed as an assistant part for references governors adjusting constraints to prevent references from stopping updates. The use of output admissible sets for a class of variable constraints is exploited to form invariant sets. Simulation results based on a turbofan engine model show that references governors with limit governors can effectively enforce the multiple constraints and provide enhanced engine thrust when steady violation occurs.

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“…An example of a command governor structure utilising soft contraints via slack variables are given in. 34 Here the authors utilize the slack variables and their weights to prioritise between various important constraints.…”

Section: Introductionmentioning

confidence: 99%