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Maximum power point tracking (MPPT) technique is used in photovoltaic (PV) power generation system to assume the maximum power point (MPP) no matter how the PV panel temperature and irradiation conditions change. It plays a decisive role in PV power generation system. Therefore, this paper introduces a modified optimal voltage control (OVC) method coupled with active disturbance rejection control...
In this paper, size reduction of antenna structures taking reflection response and total efficiency into account has been investigated. In order to find available design trade-offs concerning the antenna footprint, its wideband matching, and efficiency, numerical optimization has been employed. Appropriate formulation of the objective function permits identification of the designs that exhibit the...
Image data communication is playing a more and more important role in the process of clinical data exchange during which the data can be intercepted and revealed. Hence lots of methods have been proposed to protect the images from unauthorized access and alteration. Yet, they all have various limitations. This work proposes an encryption framework with RSA, AES and MurmurHash to ameliorate these issues...
In computer games, high-quality pathfinding algorithms are important to bring satisfactory experiences to the players, which may improve the playability of computer game. The method of KM-A∗ belongs to hierarchical pathfinding, which incorporates the information of obstacle distribution when partitioning game maps using K-means clustering. This algorithm reduced unnecessary storage and unnatural paths...
We report our researching work on algorithm design and software development for Dammann gratings design and fabrication for CO2 laser medical applications. The algorithm consists of two parts: elements surface-relief optimization and mask data generating. In the first part, Simulated Annealing Algorithm is adopted and some acceleration codes are imbedded into the algorithm for fast-calculation consideration,...
Ant Colony Algorithm newly appears as a heuristic algorithm, which has received much attention recently. It is applied to the assignment problem and an improved algorithm is presented to raise the search ability for the global optimization. The assignment problem based on the Ant Colony Algorithm is briefly introduced, and then the mathematical description and the procedure of the Ant Colony Algorithm...
This paper focuses on the avionics task partition scheduling under the FP-EDF scheduling strategy in which the operation system adopts fixed priority strategy and each individual partition adopts dynamic priority scheduling strategy. For the partition task worst-case response time, a more exact analysis algorithm was addressed through checking each release of tasks during the partition busy period...
Constrained optimization problems (COPs) are a kind of mathematic programming problem frequently encountered in the disciplines of science and engineering application. After analyzing weaknesses of existing constrained optimization evolutionary algorithms (COEAs), a novel improved algorithm called complex-GA, which converts COPs into multi-objective optimization problems (MOPs) and effectively combines...
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