USM will try to enhance high frequencies, which is not something that I want.
超声波马达将努力提高高频率，这不正是我想要的。
Perhaps, this is the place for USM Eng Campus students to spend their weekend.
我想，这里或许是理工学子在周末可以消磨时间的地点。
The separation mode electrical match method for the resonant frequencies of USM was presented.
提出了超声电机谐振频率分离式电学匹配方法。
This paper introduces the technology of ultrasonic motor (USM) and its potential in the future.
对超声波马达技术及其应用现状和发展前景做了介绍。
Through MAC, encryption and timestamp, USM protects management messages from communication threats.
用户安全模型使用消息鉴别码、加密和时间戳保护网管消息的传输安全。
Then how USM works and how the ellipse trace of particle on the surface of stator forms are analyzed.
接着分析了超声波电动机的工作原理和定子表面质点椭圆运动的形成机理。
Control strategies for the two DOF trajectory following are studied and applied to the prototype USM.
研究了其中两个自由度的运动轨迹跟踪控制策略，并将其应用于电机样机的控制。
Besides, the position tracking control of USM for triangle and sinusoid is studied by means of P-control.
采用比例控制算法研究行波超声波电机对三角波、正弦波曲线的快速位置轨迹控制。
Moreover, the factors which affect the operation of USM are studied combined with the making process of USM.
并结合样机的制作过程分析了影响电机运转的不利因素。
Meanwhile, since the USM is capacitive, its voltage would be interfered by resonant excited by the inductors.
串联电感又会与电学上容性的超声电机产生谐振影响超声电机上电压的高低。
All of the researching results were contributed to improve the design theory and the control method of the USM.
研究结果为超声波电动机的设计和控制提供了参考依据。
This dissertation developed a novel multi-DOF plane liner USM and the relevant electrical match and driving system.
本文研制了一种新型平面多自由度超声电机及其电学匹配和驱动系统。
Introduces its makeup and control mode of linear coordinate slider and rotary coordinate rotor basing on rotary USM.
介绍基于旋转型超声电动机的线性坐标平台和旋转坐标转台系统组成及其控制方式。
The experiment results show that USM can complete rapid response speed and high precise position control while using neuron PID controller.
实验表明，使用神经元自适应PID算法对超声波电机进行速度和位置控制，可以达到快速响应和高精度的控制效果。
To avoid the vibration under non-working modes, inductors should be connected in series to the USM, which is driven by switched-supply power.
以开关电源驱动的超声电机为了避免激发出电机的非工作模态振动，需要串联电感滤除高次谐波。
Finally an anisotropic two-phase turbulence model for dense gas-particle flows combining the usm model with the particle kinetic theory is proposed.
本文将二阶矩两相湍流模型和颗粒动力学理论结合，提出了各向异性的二阶矩稠密两相湍流模型。
Finally, an anisotropic two-phase turbulence model for dense gas-particle flows, combining the USM model with the particle kinetic theory, is proposed.
本文将二阶矩两相湍流模型和颗粒动力学理论结合，提出了各向异性的二阶矩稠密两相湍流模型。
A quadric transducer coordinately driving spherical USM was proposed and fabricated. This kind of USM has merits such as simple structure and high output torque.
研制了一种基于四换能器协调驱动的球型超声电机，该电机具有结构简单、输出转矩大等优点。
The contract states between the stator and the rotator of traditional ring type traveling wave USM is dynamic point-area contract, which lead to low output torque.
传统的圆环型行波超声电机定转子之间的接触状态为动态的点面接触，造成其输出力矩低。
Objective to discuss how to display the fetal facial frame using 3d ultrasound surface mode (USM) and then to improve the detection rate of fetal cleft lip at the optimal periods.
目的探讨应用三维超声表面模式显像观察胎儿面部结构，选择最佳时间，提高胎儿唇裂的检出率。
The contents are summarized as follows:The feature, background and apply of the USM are introduced, and the nonlinear phenomenon and experiment procedure about the USM are discussed.
主要工作和结论如下：介绍了超声电机的特点、研究背景，概述了超声电机的非线性现象以及非线性动力学实验研究进展。
The experimental result indicates that cutting speed, precise process and surface quality of the combined USM and ECM machining are all greatly improved compared with those of the USM or ECM.
试验结果表明，超声电解复合加工和单一的超声加工、电解加工比较可显著提高其加工速度、加工精度及表明质量。
Ultrasonic Motor (USM) has excellent performance and many useful features, however, its mathematical model has strong non-linearity and time-variety to make precise position servo very difficult.
超声波电机是一种新型的电机，它有许多电磁电机无法比拟的优点，但它的数学模型的强非线性和时变性，使高精度的位置定位非常困难。
The USM driving control system based on digital signal processor was designed. The digital wave synthesizer was used as the signal generator, and the full-bridge inverter was used in power amplifier.
设计了基于数字信号处理器的超声电机驱动控制系统，以数字波合成器作为超声信号发生器，以全桥逆变器为功放。
The USM driving control system based on digital signal processor was designed. The digital wave synthesizer was used as the signal generator, and the full-bridge inverter was used in power amplifier.
设计了基于数字信号处理器的超声电机驱动控制系统，以数字波合成器作为超声信号发生器，以全桥逆变器为功放。
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