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提出了一种基于磁通控制可调电抗器实现超声波换能器动态匹配的方法,建立了换能器和可调电抗器动态匹配系统,得到了换能器系统谐振频率和变压器二次侧注入电流之间的关系。通过跟随系统工作频率的变化,改变注入变压器二次侧的电流值使其一次侧呈现出能够实现系统谐振的电感值,实现了换能器大频率范围工作和高效率的输出。建立动态匹配试验电路,证明了方法的正确性和可行性。
A method of dynamic matching of ultrasonic transducer based on flux-controlled adjustable reactor is proposed. The dynamic matching system of transducer and adjustable reactor is established. The resonant frequency of transducer system and the secondary side injection of transformer The relationship between current. By following the change of system operating frequency, the value of the current injected into the secondary side of the transformer is changed so that the inductance value of the system resonance can be exhibited on the primary side, and the transducer operates in a large frequency range and has high efficiency. The establishment of dynamic matching test circuit proves the correctness and feasibility of the method.