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Currently, absolute positioning methods for indoor flying robots use multiple cameras to measure position through image processing. However, such systems are large scale and costly. Therefore, we have developed a measurement and control system that uses ultrasonic waves. The system consists of a ground base with three ultrasonic transmitter units and a flying robot. The flying robot is equipped with...
Nano-satellite has payload limitation to minimize weight and cost then minimum number of attitude sensors can be loaded which are sun sensor, magnetometer and gyroscope. However, The sun sensor cannot be used during eclipse, nano-satellite keeps estimating attitude with model propagator. Which contains the uncertainty, torque disturbance. For small satellite has too low moment of inertia to vulnerable...
Use of a Quadrotor is considered as one of the methods to inspect infrastructures such as a tunnel or a bridge. In such a case, it needs to control the position of the airframe. Note, however, that it is difficult to realize the position control using GPS in environments, such as in a tunnel or under a bridge, because there is a problem, such as the weakness of the GPS signal or the incomplete reaching...
We propose a feature extraction method for lane changes of other traffic participants. According to previous research, over 90 % of car crashes are caused by human mistakes, and lane changes are the main factor. Therefore, if an intelligent system can predict a lane change and alarm a driver before another vehicle crosses the center line, this can contribute to reducing the accident rate. The main...
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