Automatic Flight Control
Mostrando 1-6 de 6 artigos, teses e dissertações.
-
1. An approach to design feedback controllers for flight control systems employing the concepts of gain scheduling and optimization.
The role of feedback in the design of aircraft stability and control is becoming increasingly important. The basic reason driving this trend is the necessity to cope with a growing number of more stringent requirements, which are sometimes conflicting. This work presents a design methodology applicable to flight control laws, which can be either a control an
Publicado em: 2009
-
2. Desenvolvimento e avaliação de estratégias de assistência à pilotagem para aeronaves leves
The following work presents the process of choice and development of a series of strategies to facilitate piloting on light aircrafts. These strategies are based on trajectory control instead of attitude control like it is usually done in conventional aircrafts, aiming smaller learning times as well as reduction in pilot workload, such that flight safety is
Publicado em: 2009
-
3. Influência das precipitações pluviométricas e da atividade forrageira das abelhas africanizadas (Apis mellifera L.) no comportamento higiênico / Influence of rainfall and foraging activity on hygienic behavior of Africanized honey bees (Apis mellifera L.)
Hygienic behavior (HB) of honey bees (Apis mellifera ) is a useful and selectable characteristic for resistance to diseases. However, in order to efficiently evaluate and select for this behavior we need to understand the mechanisms involved and how environmental factors influence HB. We examined how time of the day, bee age and behavioral ontogeny, and clim
Publicado em: 2009
-
4. Estudos de um método para cálculo de ganhos da malha de controle de atitude de um lançador de satélites / Analytical method for computing the controller gains of a satellite launcher
In this work, the VLS (Satellite Launcher Vehicle) control gains are calculated applying a frozen poles technique for each 1-second interval, allowing that a linear time invariant analysis to be executed inside each time interval during all flight phases. The system control architecture is proportional-integral with derivative feedback, making the 3 gains (p
Publicado em: 2004
-
5. Estudos de um método para cálculo de ganhos da malha de controle de atitude de um lançador de satélites / Analytical method for computing the controller gains of a satellite launcher
Neste trabalho, os ganhos do controlador do VLS são calculados aplicando-se a técnica de pólos congelados em intervalos de 1 segundo de vôo, permitindo que uma análise linear invariante seja adotada para cada intervalo de tempo ao longo de todas fases de vôo. Como a arquitetura de controle adotada é fixa (PID), os valores dos ganhos devem ser escalona
Publicado em: 2004
-
6. AutomaticgeocodingoftheinteferometricSARimages:Geo-InSARsystems / Geocodificação automática de imagens de radar de abertura sintética interferométrico: sistema Geo-InSAR
The generation of high resolution topographic map from airborne InSAR data, involves two processing parts, the Interferometric SAR processing and the InSAR Geocoding. The first part can be done in the automatic mode, because the algorithms involved are efficient and well known. In the second part, the phase calibration is the critical processing step, and th
Publicado em: 2000