TY - GEN
T1 - Stochastic design of switching controller for quadrotor UAV under intermittent localization
AU - Schioler, Henrik
AU - Leth, John
AU - Leth, Tobias
AU - Totu, Luminita
PY - 2017/3/1
Y1 - 2017/3/1
N2 - This paper presents a novel methodology for the design of motion controllers for UAV's of quad-rotor type. The developed controllers are of time switching type, where discrete modes are determined by the momentary availability of global positioning information. Relevant application scenarios are found, where the availability of GPS or generally GNSS is scarce, e.g. in case of indoor flight. For indoor flight dedicated indoor positioning technology may be applied, such as the ultra-sound/radio solution from [1]. Even with such technology available, due to reflection, interference and absorption, the required positioning service cannot be provided continuously without intermittency. A control model is presented, for which a general observer based controller framework is suggested. Feedback and observer gains are then allowed to switch according to the availability of positioning information. The mechanical states of the UAV are inherently un-observable in the absence of positioning information. Therefore the controller, in that case, will be unstable. However, by designing a set of feedback/observer gains to obtain stochastic stability under a given stochastic model for the switching process, an overall well functioning controller is obtained.
AB - This paper presents a novel methodology for the design of motion controllers for UAV's of quad-rotor type. The developed controllers are of time switching type, where discrete modes are determined by the momentary availability of global positioning information. Relevant application scenarios are found, where the availability of GPS or generally GNSS is scarce, e.g. in case of indoor flight. For indoor flight dedicated indoor positioning technology may be applied, such as the ultra-sound/radio solution from [1]. Even with such technology available, due to reflection, interference and absorption, the required positioning service cannot be provided continuously without intermittency. A control model is presented, for which a general observer based controller framework is suggested. Feedback and observer gains are then allowed to switch according to the availability of positioning information. The mechanical states of the UAV are inherently un-observable in the absence of positioning information. Therefore the controller, in that case, will be unstable. However, by designing a set of feedback/observer gains to obtain stochastic stability under a given stochastic model for the switching process, an overall well functioning controller is obtained.
UR - http://www.scopus.com/inward/record.url?scp=85016960313&partnerID=8YFLogxK
U2 - 10.1109/AUCC.2016.7868196
DO - 10.1109/AUCC.2016.7868196
M3 - Article in proceeding
AN - SCOPUS:85016960313
T3 - Australian Control Conference (AuCC)
SP - 243
EP - 248
BT - 2016 Australian Control Conference (AuCC)
PB - IEEE
T2 - 2016 Australian Control Conference, AuCC 2016
Y2 - 3 November 2016 through 4 November 2016
ER -