Small Low-cost Unmanned Aerial Vehicle Lithium-Polymer Battery Monitoring System
ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
American Society of Mechanical Engineers
Lithium-Polymer (LiPo) batteries are becoming a popular choice for electric small low cost Unmanned Aerial Vehicles (UAVs). In case of a multirotor UAVs, a battery failure means a certain loss of the air frame. To fully utilize their potential and maintain mission safety, a monitoring system predicting battery behaviour is required. In this study a change in battery dynamics during discharge, and its effect of thrust produced by actuators is measured. Experiments simulating flight conditions are performed, and measured data are interpolated with double exponential and polynomial curves. An obvious similarity between the battery state-of-charge and produced thrust is observed. Due to conventional altitude controllers’ inability to cope well with changes in battery dynamics, a controller invariant to those changes is presented.
Podhradsky, Michal; Bone, Jarret; Jensen, Austin; and Coopmans, Calvin, "Small Low-cost Unmanned Aerial Vehicle Lithium-Polymer Battery Monitoring System" (2013). AggieAir Presentations. Paper 36.