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Outline
The navigation safety of UAV depends on the normal operation of its electronic equipment and sensors. Electromagnetic interference may lead to errors or failures of flight control systems, affecting the flight path and stability. The use of metal materials can effectively shield the electromagnetic field, but the introduction of metal will change the magnetic field characteristics of the system, resulting in the detuning of the compensation network and leading to the power supply system output power deviation and low efficiency. To study the electromagnetic shielding effect of aluminum-ferrite and the influence of the shielding structure on the electrical parameters of a magnetically coupled resonant wireless power supply system, the influence of the aluminum plate on the spatial magnetic field is studied at first, and the variations of the coil self-inductance, mutual inductance and the magnetic induction intensity in the non-working area are analyzed. Then, ferrite is added to improve the electrical parameters, so that the self-inductance and mutual inductance of the coil are close to the initial values. Finally, simulation results verified that the electromagnetic radiation in the non-working area met the safety standards. In addition, an experimental platform was built to analyze the characteristics of output parameters and verify the effectiveness of the shielding structure.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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