Traditional magnetically coupled resonant wireless power transfer technology uses fixed distances between coils for research, to prevent fluctuations in the receiving voltage, and lead to reduce transmission efficiency. This paper proposes a closed-loop control wireless communication wireless power transfer system with a wearable four-coil structure to stabilize the receiving voltage fluctuation caused by changes in the displacement between the coils. Test results show that the system can provide stable receiving voltage, no matter how the distance between the transmitting coil and the receiving coil is changed. When the transmission distance is 20 mm, the power transfer efficiency of the system can reach 18.5% under the open-loop state, and the stimulus parameters such as the stimulation period and pulse width can be adjusted in real time through the personal computer terminal.

中文翻译：

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用于植入式医疗器械的无线通信和无线电力传输系统

传统的磁耦合谐振无线电力传输技术采用固定线圈间距进行研究，以防止接收电压波动，导致传输效率降低。本文提出了一种具有可穿戴四线圈结构的闭环控制无线通信无线电力传输系统，以稳定由线圈之间位移变化引起的接收电压波动。测试结果表明，无论发射线圈与接收线圈之间的距离如何变化，该系统都能提供稳定的接收电压。当传输距离为20 mm时，系统在开环状态下的功率传输效率可达18.5%，