Trajectory simulation with batter y simulation with battery modeling for electric p y modeling for electric poweredunmanned aerial vehicles
Başlık çevirisi mevcut değil.
- Tez No: 797312
- Danışmanlar: DR. DREW LANDMAN
- Tez Türü: Yüksek Lisans
- Konular: Astronomi ve Uzay Bilimleri, Makine Mühendisliği, Astronomy and Space Sciences, Mechanical Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2020
- Dil: İngilizce
- Üniversite: Old Dominion University
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 151
Özet
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Özet (Çeviri)
Fixed wing electric powered unmanned aerial vehicles (UAVs) has been widely adopted for the last decade in a great number of applications. One of the primary advantages to fixed wing versus multi-rotor designs is the efficiency in forward flight with best possible range and endurance capabilities. In electrically powered air vehicles range and endurance are monitored by the State-of-Charge (SOC) of the battery. To understand the capabilities of the battery, discharge experiments can be conducted in lab environments; however, sometimes the results are difficult to integrate in flight simulations. In this thesis, a trajectory simulation is developed that can estimate an instantaneous SOC and terminal voltage of the Lithium Polymer (Li-Po) battery of a fixed wing UAV. The simulation code is generated using the traditional flight dynamics equations for a mathematical five degree of freedom (5-DOF) system in the MATLAB environment. Simplistic control relations are defined for setting the pitch angle(θ) and roll angle(𝜙) of the UAV. An AVISTAR ELITE RC model has been chosen to simulate the flight mission with the goal of future flight test validations. Initially, battery simulation was carried out in the ODU UAV lab by discharging a 3300Mah Li-Po battery to half capacity with constant current over a range of current draw. Later, these constant current discharge curves were converted to the constant power curves which are more suitable for the battery powered aircraft applications. Simulated battery pulse discharge tests were also conducted, and battery parameters were estimated in SIMULINK for the validation of the constant power method used in the simulation. The overall results of this research demonstrate the endurance and range of the electric UAV for mission paths that include takeoff, climb/descent and turning flight phases.
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