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As the process of traditional dynamics modeling for rigid-flexible couple system is complex, this paper introduces the theory of characteristic modeling to simplify the modeling process. Unlike other reduced-order models, characteristic model compresses the high-order information into the characteristic parameters. Therefore, it will not lose model information. In addition, in order to improve the...
A universal watermarking protocol for quantum images is designed in this paper. The protocol is developed based on quantum transform (QT) and quantum add operation (QAO). Moreover, a dynamic vector is introduced to control the embedding strength in the embedding process, which is obtained through the constraint that quantum image state should keep normalized in the entire computation process. Therefore,...
This paper presents the building electrical equipment Internet of Things (IOT) system and its energy-saving applications. The system which is based on the IOT technology is composed of the IOT node, environment module, switching module, air conditioning module, electrical parameter detection module, DDC controller module and management computer. It can not only collect and store the data of building...
A novel multiple classifiers fusion approach based on SFLS (Shortest Feature Line Segment) is proposed in this paper. SFLS is a kind of simple yet effective classification method depending on the shortest feature line. The original form of SFLS's output is just class label. To use SFLS as the member classifier in the multiple classifier system, the form of SFLS's output is modeled using the membership...
Ground test platform for attitude and orbit control system of small satellite is designed. Hardware interfaces between the real sensors / actuators and the onboard computer is simulated. Satellite dynamic and space environment is calculated in order to form a close-loop control system. Finally, the ground test system is validated by comparing the simulation result and in-orbit flying data.
A SINS/CNS/GNSS integrated navigation scheme is researched for advanced upper stage in this paper. First of all, the composition of the integrated navigation is introduced. Then, the error model of the integration system in launch inertial frame was established. especially the misalignments of star tracker are inputted as system states, and also the federated filter algorithm is used to estimate the...
In order to meet the requirements of unit equipment testing system applied to space vehicle control system, a universal testing system is designed. It consists of hardware architecture based on Compact PCI and software architecture based on VxWorks. It can meet the demand of the mission-critical applications totally. It has the advantages of well-run, high reliability, multipurpose testing, low-cost,...
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