DR. FRANCISCO RUIZ SÁNCHEZ

@inproceedings{Martinez-Alvarado2014b,

title = {Dynamic Response of BLDC-Thruster for Small Scale Quadrotors under Aerodynamic Load Torque},

author = {Martinez-Alvarado, Ricardo and Ruiz-Sanchez, Francisco J. and Sanchez-Orta, Anand and Garcia-Salazar, Octavio},

url = {https://www.researchgate.net/publication/276958535_Dynamic_Response_of_BLDC-Thruster_for_Small_Scale_Quadrotors_under_Aerodynamic_Load_Torque},

doi = {10.1109/ROPEC.2014.7036341},

isbn = {978-1-4799-5683-8},

year  = {2014},

date = {2014-01-01},

booktitle = {Dynamic Response of BLDC-Thruster for Small Scale Quadrotors under Aerodynamic Load Torque},

pages = {1-6},

organization = {iee international autumn meeting on power, electronics and computing},

abstract = {In multi-rotor UAVs, a controlled Thrust is a main factor to achieve a safe and stable flight. Thrust is the result of a coordinated action of a set of symmetrically distributed thrusters whose single contribution is usually described as a square function of its rotor speed; however, aerodynamic forces induce a load torque on the rotor that disturb its expected speed response, thus its effective Thrust, affecting the whole performance of the aircraft. In this paper, we analyse and quantify the effects of the aerodynamic load torque induced on the spinning propeller of a BLDC thruster used in small scale Quadrotors and present some experimental validation. We describe the model of a 3-phase thruster with a two blade propeller of fixed pitch angle, we analyse its numerical simulation to determine the effects of the induced load torque on the dynamic response of the rotor, and we experimentally verify the results assuming ideal conditions of hover flight. Finally we illustrate the convenience of using feedback control to reduce the sensibility of thrusters face to non modelled dynamics applying a PD controller and we discuss about the importance of an accurate dynamic model of the thruster for control purposes. 



Dynamic Response of BLDC-Thruster for Small Scale Quadrotors under Aerodynamic Load Torque (PDF Download Available). Available from: https://www.researchgate.net/publication/276958535_Dynamic_Response_of_BLDC-Thruster_for_Small_Scale_Quadrotors_under_Aerodynamic_Load_Torque [accessed Jun 16, 2017].},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Mart\'{i}nez-Alvarado2014,

title = {performance evaluation of propeller-engine systems for unmanned aerial vehicles in hovering},

author = {Mart\'{i}nez-Alvarado, Ricardo and S\'{a}nchez-Orta, Anand and Granda-Guti\'{e}rrez, E. and Ruiz-Sanchez, Francisco J.},

url = {https://www.researchgate.net/publication/267094930_PERFORMANCE_EVALUATION_OF_PROPELLER-ENGINE_SYSTEMS_FOR_UNMANNED_AERIAL_VEHICLES_IN_HOVERING_MODE},

issn = {1405-2172},

year  = {2014},

date = {2014-00-00},

booktitle = {performance evaluation of propeller-engine systems for unmanned aerial vehicles in hovering},

volume = {36},

pages = {131-136},

publisher = {congreso internacional en ingenieria electronica electro 2014},

abstract = {A flexible tool to dimensioning and optimizing the performance of a propeller-engine system for multi-rotor Unmanned Aerial Vehicles (UAVs) is proposed. The study is centered on an experimental platform designed to identify the dynamic behavior of the thruster which operates as main actuator in multi-rotor UAVs. The aim is to optimize the performance of the propulsion system with basis on its dynamic behavior. The dynamic of an UAV changes notably according to the performance of the thruster, which is composed by a propeller coupled to a Brushless Direct Current (BLDC) Motor. The dynamic response of the propulsion system is acquired from the experimental data, including the electric, mechanical and aerodynamic effects of the wing when the propeller is the load of the rotor. The experimental platform allows evaluating the performance of the system and determining the payload for a UAV, but also validates control laws to regulate the thruster action. 



PERFORMANCE EVALUATION OF PROPELLER-ENGINE SYSTEMS FOR UNMANNED AERIAL VEHICLES IN HOVERING MODE (PDF Download Available). Available from: https://www.researchgate.net/publication/267094930_PERFORMANCE_EVALUATION_OF_PROPELLER-ENGINE_SYSTEMS_FOR_UNMANNED_AERIAL_VEHICLES_IN_HOVERING_MODE [accessed Jun 16, 2017].},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}