Full
Outline
Collecting parameters such as current and temperature on the motor rotor can effectively prevent rotor side faults and achieve motor vector control better. However, the running rotor rotates at high speed, making it very difficult to provide the signal measured on the rotor side to the controller on the stator side. The electric field coupling wireless signal transmission technology consists of two pairs of axially aligned circular parallel plates forming capacitors, which are installed on both sides of the stator and rotor at the end of the motor. High-frequency and low impedance characteristics of the close-range plate capacitors are utilized to transmit digital signals between the motor stator and rotor, with significantly lower signal delay than other wireless communication technologies. Then modeled the communication circuit, calculated the parameters of each component, analyzed the causes of signal distortion, and the design of a contactless high-frequency signal transmission circuit based on parallel plate coupling capacitors was realized. An experimental platform was built, analog signals from the rotor side were collected and transmitted. By comparing the experimental results, the correctness of communication theory was verified.
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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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