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- 저자 : Shaorong Xie (검색결과 2 건)
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A Novel Control Method for Shallow Underwater Robot
Zhijie Tang,Pinglong Liu,Qian Luo,Jun Luo,Shaorong Xie 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.3
For the coordination and control of robot behavior, behavior decision is the foundation and the determinant of robot intelligence. Based on autonomous underwater vehicle (AUV), through the analysis of domestic anti-surge technology research status and inrush current model, a control technology with the use of behavioural decision upper and lower piecewise integration control between PID and FPID(Fuzzy PID) is designed. Then, according to the characteristics of underwater robotics and inrush current optimal path planning, AUV can get information and plan a different anti-surge behavioural decision, which makes underwater robot better complete the underwater operations. Finally, the simulation of anti-surge behaviour underwater robot is done. The results show that it achieves a good control performance, and the environmental adaptability of AUV has been improved.
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Influences of Wire Diameters on Output Power in Electromagnetic Energy Harvester
Yan Peng,Lan Zhang,Zhongjie Li,Songyi Zhong,Yong Liu,Shaorong Xie,Jun Luo 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.10 No.1
In this paper, we systematically investigate how the wire diameter affects the output performance of electromagnetic energy harvesters. The harvesters with the same structure but different coils mainly comprised of a magnet array, two coil arrays, a pair of springs and a housing. Different discrete wire diameters of coils are selected to compare the output performance and explore the optimal value. We first set up the theoretical model of the configuration to predict optimal wire diameter and conduct simulations to observe open-circuit voltage and output power, and find the hypothetically optimal diameter leading to the best performance. Subsequently, we fabricate a series of prototypes and conduct four groups of experiments from the following aspects for comparison purposes: constant frequency excitation, frequency sweep, impedance matching and charging capacitors, and validate the theoretically estimated value. When we operate the prototypes under the excitation of 20 Hz, 1.0 g, the maximum average power of 37.45 mW is generated with the best wire diameter, at least 1.62 times as high as that in other cases. The results of capacitor charging experiments, i.e., charging rate, further validate the output power trend. This study can be of great significance for power density improvement in electromagnetic energy harvesters.
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