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Optimal Control of Linear Systems With Limited Control Actions: Threshold-Based Event-Triggered Control
Paderborn Univ, Chair Automat Control EIME, D-33098 Paderborn, Germany..
Huawei Technol Sweden AB, SE-16494 Kista, Sweden..
Paderborn Univ, Chair Automat Control EIME, D-33098 Paderborn, Germany..
KTH, Skolan för elektroteknik och datavetenskap (EECS), Reglerteknik. KTH, Skolan för elektroteknik och datavetenskap (EECS), Centra, ACCESS Linnaeus Centre.
2018 (Engelska)Ingår i: IEEE Transactions on Big Data, ISSN 2325-5870, E-ISSN 2168-6750, Vol. 5, nr 3, s. 1275-1286Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We consider a finite-horizon linear-quadratic optimal control problem where only a limited number of control messages are allowed for sending from the controller to the actuator. To restrict the number of control actions computed and transmitted by the controller, we employ a threshold-based event-triggering mechanism that decides whether or not a control message needs to be calculated and delivered. Due to the nature of threshold-based event-triggering algorithms, finding the optimal control sequence requires minimizing a quadratic cost function over a nonconvex domain. In this paper, we first provide an exact solution to this nonconvex problem by solving an exponential number of quadratic programs. To reduce computational complexity, we then propose two efficient heuristic algorithms based on greedy search and the alternating direction method of multipliers technique. Later, we consider a receding horizon control strategy for linear systems controlled by event-triggered controllers, and we further provide a complete stability analysis of receding horizon control that uses finite-horizon optimization in the proposed class. Numerical examples testify to the viability of the presented design technique.

Ort, förlag, år, upplaga, sidor
Institute of Electrical and Electronics Engineers (IEEE), 2018. Vol. 5, nr 3, s. 1275-1286
Nyckelord [en]
Event-triggered control, linear systems, optimal control, receding horizon control
Nationell ämneskategori
Reglerteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-235890DOI: 10.1109/TCNS.2017.2701003ISI: 000445357100040Scopus ID: 2-s2.0-85053785831OAI: oai:DiVA.org:kth-235890DiVA, id: diva2:1254145
Anmärkning

QC 20181008

Tillgänglig från: 2018-10-08 Skapad: 2018-10-08 Senast uppdaterad: 2018-10-08Bibliografiskt granskad

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Johansson, Mikael
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ReglerteknikACCESS Linnaeus Centre
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