Sensor signal reconfiguration using pre-estimated L2-L∞filter
LIN Jun
ZHANG Ping
Abstract：For SIMO systems contained unmodeled dynamics, pre-estimated L2–L∞filter was proposed to to achieve reconfiguration of fault sensor signals. By establishing transfer function matrix of fault sensors’ signals to the measurement with the minimum relative degree, pre-estimated signals of fault sensors were achieved. Combined with the presence of L2–L∞ filter, the design procedure of pre-estimated L2–L∞ filter were given. By contrast with the reconfigurations of aircraft fault sensors’ signals achieving by pre-estimated L2–L∞ filter, L2–L∞ filter and partial state observer and with Monte Carlo simulation tests, the reconfiguration signal, i.e. attack angle reconfigured by pitch angular rate, which achieved by pre-estimated L2–L∞filter has the highest precision. And the reconfiguration error of attack angle is less than 0.1 degree, while the system and the control input unmodeled dynamics flutter within ±30%and ±20%.
Keywords：pre-estimated L2-L∞filtersignal reconfigurationL2-L∞filterpartial state observeranalytical redun-dancy
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 243-250 )