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Unmanned aerial vehicle (UAV) and Chinese calligraphy seem like two completely unrelated subjects in today's world. UAV, as one of the most advanced technology to date, has gathered much attention lately due to its potentially unlimited applications. Contrarily, Chinese calligraphy is one of the most beautiful and ancient calligraphy art originally developed from China many thousand years ago. Today...
A hierarchical-distributed methodology (HDM) is presented to implement the autonomous mission execution for multiple unmanned aerial vehicles (UAVs). The main idea of HDM is to divide the event control law into the group and individual event control laws. The group event control law is focused on the mission events. The individual event control laws are focused on the task events and motion events...
This paper studies the stability of linear systems with uncertain parameters in the state matrix. Instead of arguing for the worst case like in the classical robust stability methods, we make use of the statistical information on these uncertain parameters, which can be obtained statistically from manufacturing data. Hence, this paper follows the idea of probabilistic robust control and investigates...
The recent development of small yet sophisticated sensors has led to the development of smaller unmanned aerial vehicles, especially in the form of quadrotor. When it is limited by the availability of the reverse propellers, the conventional quadrotor will no longer be realizable, and thus introducing the 4-standard-propeller (4SP) quadrotor design. This paper presents a comprehensive nonlinear modeling...
We investigate optimal placements of multiple bearing-only sensors for target localization in both 2D and 3D spaces. The target is assumed to be static, and sensortarget ranges are arbitrary but fixed. The Fisher information matrix is used to characterize the localization uncertainty. By employing frame theory, we show that there are two types of optimal sensor placements, regular and irregular. Necessary...
Based on the system adaptation framework which has been proposed in our previous work, this paper focuses on the input part, that is the identification of market influential factors. We first carry out the empirical research to preselect some possible factors from economic and sentiment aspects. The causal and multicollinear relationships between each of them and the external force of the market are...
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