Algebarske metode estimacije stanja autonomne letjelice primjenom akcelerometra

master's thesis

• Title (english): Algebraic methods for state estimation of unmanned aerial vehicles by using accelerometer
• Author: Joško Markučič
• Mentor: Josip Kasać (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2018-07-12, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

U ovom radu razmatrana je primjena algebarskih metoda estimacije stanja autonomne letjelice primjenom akcelerometra s ciljem sinteze regulacijskog sustava letjelice. Algebarske metode omogućuju robusnu identifikaciju parametara i estimaciju stanja sustava u realnom vremenu te predstavljaju potencijalnu alternativu konvencionalnom asimptotskom pristupu estimaciji varijabli stanja sustava. Algebarske metode estimacije primjenjene su na linearizirani model potpuno upravljive letjelice sa šest zakrenutih rotora, koji omogućuje potpuno decentralizirano upravljanje po svakom stupnju slobode gibanja letjelice. Pretpostavka je da je početna pozicija letjelice u ishodištu inercijalnog sustava te da postoji nepoznata konstantna pogreška mjerenja akceleracije. Korištena je konvencionalna algebarska metoda te metoda frekvencijskog pomaka za dobivanje izraza za algebarsku estimaciju drifta akcelerometra dok je za usporedbu s asimptotskom metodom korišten robusni kompenzator drifta akcelerometra.

Abstract (english)

This thesis discusses application of algebraic estimation methods of autonomous aircraft by using accelerometer with the aim of forming the aircraft control system. Algebraic methods enable robust parameter identification and real-time system estimation which represent a potential alternative to a conventional asymptotic approach to system state estimation. Algebraic estimation methods were applied to a linearized model of a fully actuated aircraft with six passively tiled rotors, which allows for a fully decentralized control of each aircraft degree of freedom. The assumption is that the initial position of the aircraft is at the origin of the inertial system and that tere is an unkown constant error in acceleration measurement. A conventional algebraic method and a frequency shift method were used to obtain expressions for algebraic accelerometer drift estimation, while for comparison with the asymptotic method a robust compensator of accelerometer drift was used.

• Keywords: algebarska metoda; metoda frekvencijskog pomaka; robusni kompenzator; drift akcelerometra; estimacija varijabli stanja; autonomna letjelica
• Keywords (english): algebraic method; frequency shift method; robust compensator; accelerometer drift; state observer; autonomous aircraft
• Language: croatian
• URN:NBN: urn:nbn:hr:235:644428
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 22:33:15