而压电性能表明在不同方向的机电耦合系数均比石英晶体相应参数大得多。

The piezoelectric property indicates that the electromechanical coupling coefficients in the different directions are much larger than the corresponding parameter of quartz crystal.

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最后，设计了无耦合条件下永磁直流电机参数简易测试系统。实现了电机电流的采集、处理及电机参数的自动辨识。

Finally, the simple test system is designed, which actualizes the collection of the motor current data and automatic identification of the parameters.

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最后，基于系统的机电耦合动力学模型，进行了平台运动稳定性分析，得到了平台实现稳定悬浮时控制参数的选择范围，垂直方向：0.3<141.5，0<0.052，水平方向：0.3<77.4，0.001<0.038。

The range of the controlling parameters is found when the magnetic table is suspending stably, vertical direction: 0.3<141.5,0<0.052, horizontal direction: 0.3<77.4,0.001<0.038.

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