Disseny i implementació d’un quadcòpter

The purpose of this project is to design a drone capable of stabilizing autonomously, and its later implementation. First different controllers have been studied in order to decide which of them was the most appropriate for the device; the communication of the selected controller with a remote control station has been analyzed; a chassis where to put on all items of the drone has been chosen; and engines able to make the device fly have been selected. It has been necessary to adapt the power source system because the engine voltage input is higher than the one of the controller and the communication system on board. So it has been designed a buck converter. Subsequently, it has been studied what sensors were needed for the application, and how to treat the data obtained to obtain better estimates of the position of the device. To check the sensor an experiment has been done. It consisted on placing the drone in positions in where the direction was known to determine the accuracy of the measurements. At the same time, flight dynamics of devices with the described characteristics has been studied, and a proportional derivative control system has been proposed. With this control system, the user can control the orientation and the height of the device. While the implementation of control orientation worked, it has not been possible to implement height control because the barometer failed to work properly. Finally, wireless communication range has been checked. The drone has been implemented. However, it is unable to take off properly. It seems to be powerful enough to do it, but the control system does not keep the device horizontal enough for the flight to be controllable

Disseny i implementació d’un quadcòpter

The purpose of this project is to design a drone capable of stabilizing autonomously, and its later implementation. First different controllers have been studied in order to decide which of them was the most appropriate for the device; the communication of the selected controller with a remote control station has been analyzed; a chassis where to put on all items of the drone has been chosen; and engines able to make the device fly have been selected. It has been necessary to adapt the power source system because the engine voltage input is higher than the one of the controller and the communication system on board. So it has been designed a buck converter. Subsequently, it has been studied what sensors were needed for the application, and how to treat the data obtained to obtain better estimates of the position of the device. To check the sensor an experiment has been done. It consisted on placing the drone in positions in where the direction was known to determine the accuracy of the measurements. At the same time, flight dynamics of devices with the described characteristics has been studied, and a proportional derivative control system has been proposed. With this control system, the user can control the orientation and the height of the device. While the implementation of control orientation worked, it has not been possible to implement height control because the barometer failed to work properly. Finally, wireless communication range has been checked. The drone has been implemented. However, it is unable to take off properly. It seems to be powerful enough to do it, but the control system does not keep the device horizontal enough for the flight to be controllable

SMARAD - Centre of Excellence in Smart Radios and Wireless Research - Activity Report 2008 - 2010

Centre of Excellence in Smart Radios and Wireless Research (SMARAD), originally established with the name Smart and Novel Radios Research Unit, is aiming at world-class research and education in Future radio and antenna systems, Cognitive radio, Millimetre wave and THz techniques, Sensors, and Materials and energy, using its expertise in RF, microwave and millimetre wave engineering, in integrated circuit design for multi-standard radios as well as in wireless communications. SMARAD has the Centre of Excellence in Research status from the Academy of Finland since 2002 (2002-2007 and 2008-2013). Currently SMARAD consists of five research groups from three departments, namely the Department of Radio Science and Engineering, Department of Micro and Nanosciences, and Department of Signal Processing and Acoustics, all within the Aalto University School of Electrical Engineering. The total number of employees within the research unit is about 100 including 8 professors, about 30 senior scientists and about 40 graduate students and several undergraduate students working on their Master thesis. The relevance of SMARAD to the Finnish society is very high considering the high national income from exports of telecommunications and electronics products. The unit conducts basic research but at the same time maintains close co-operation with industry. Novel ideas are applied in design of new communication circuits and platforms, transmission techniques and antenna structures. SMARAD has a well-established network of co-operating partners in industry, research institutes and academia worldwide. It coordinates a few EU projects. The funding sources of SMARAD are diverse including the Academy of Finland, EU, ESA, Tekes, and Finnish and foreign telecommunications and semiconductor industry. As a byproduct of this research SMARAD provides highest-level education and supervision to graduate students in the areas of radio engineering, circuit design and communications through Aalto University and Finnish graduate schools such as Graduate School in Electronics, Telecommunications and Automation (GETA). During years 2008 – 2010, 21 doctor degrees were awarded to the students of SMARAD. In the same period, the SMARAD researchers published 141 refereed journal articles and 333 conference papers