The geometric parameter design and optimization of coils and magnetizer in the magnetic circuit assure the intensity and uniformity of magnetic field to lay over the GMM rod.

• 第四章搭建了GMM换能器试验平台，测试预压力和偏置磁场对其工作能力和能量传递效率的影响，优化了初始预压应力和磁偏置；