在此系统中，首先使用计算机来产生一个频率可调的超声波驱动信号，然后通过对马达转数的检测，系统得到压电超声马达的最佳谐振频率值。

In this system, a frequency-adjustable ultrasonic drive signal is made by computer, then based on the motor 's revolution number, system can automatically find the syntonic frequency of motor.

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对于激光系统性能而言，谐振腔最佳透射率具有非常重要的作用。

For the laser system performance, the resonator optimum transmission is of great important.

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用相平面法对谐振参数变化规律进行了分析，讨论了参数的最佳控制、开关器件的贮存时间补偿等问题。

After the parameters in control law is analyzed by Phase-Plane method, other questions including optimal control, compensation of storage time are also discussed.

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