本文介绍了两种对超声多普勒血流声谱国进行波形自动分类决策的方法。
Two methods for automatic classification and decision of Doppler waveforms for flow sonography analysis system are described.
对行波超声电机的控制模型进行了研究，并建立了等效动态振动模型。
The mathematics model of travelling-wave ultrasonic motors is studied in this paper and the equivalent vibrating model is built.
行波超声马达是一种靠摩擦力直接驱动的新型驱动器。
Traveling wave ultrasonic motor is a new type of actuator driven by friction.
提出了一种直接测量行波超声马达定子和转子接触状态的方法—电接触法。
An electric contact method to measure contact state of stator and rotor in traveling wave type ultrasonic motor (TWUSM) is presented.
在超声波电机理论研究和样机制作的基础上，开发了用于汽车车窗玻璃升降的行波型超声波电机。
Based on the theoretical research and prototype fabrication of traveling wave type ultrasonic motor, the traveling wave type ultrasonic motor used for lifting glass for vehicle window is developed.
在此基础上，对所采用的行波型超声波电动机的结构、工作原理及定位进行了研究。
Based on this, the structure, working principle and fixation of the traveling wave ultrasonic motor are researched.
为达到改善电机特性的目的，本文提出了一种定转子接触状态为三小区接触的多行波金属管式超声电机。
To improve the performances of BRUSM, the multi-traveling wave metal tube ultrasonic motor is proposed, that the stator is in contact with rotor in three tiny areas.
利用模糊预测控制对旋转型行波超声电机的速度控制进行了研究。
Applying fuzzy predictive control to the speed of rotary traveling wave type of ultrasonic motor was researched.
从理论上证明了用于直线型行波超声马达的波形成的可行性。
Demonstrates in theory the feasibility of generating the traveling wave used for linear traveling wave ultrasonic motors.
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。
Besides, the position tracking control of USM for triangle and sinusoid is studied by means of P-control.
从压电陶瓷的特性出发，分析了定子表面质点的运动，论述了行波型超声波电动机的运行机理。
Based on the research of the characteristics of piezoelectric ceramic, this paper presents the analysis of the movement of the stator surface points and work principle of motor.
通过将超声能量发射到对象内并对反射的信号进行波束形成而形成超声图像。
Ultrasound images are formed by transmitting ultrasound energy into the object and beamforming the reflected signals.
基于压电驱动的原理，本文对高频低幅的振动给料技术进行了探索，研制出一种具有长环形输送振子的行波型超声物料输送装置的模型样机。
Based on the principle of piezoelectric drive, we make an explorative study of a novel feeding device with vibration of high frequency and low amplitude.
研制了基于行波超声波电机与步进电机驱动的机器人多自由度机械臂精密定位控制系统。
This study puts forward an auto-detecting method of detecting the precision of dial gauges based on traveling wave ultrasonic motor and FPGA.
设计了一套行波型超声波电机驱动控制系统电路。
对圆柱体弯曲型行波超声电机进行了研究。该电机利用圆柱体的两个正交的一阶自由-自由弯曲模态进行工作。
In this paper, a traveling-wave type Ultrasonic Motors is studied, which makes the use of two orthogonal first order free-free bending vibration modes of a cylinder.
基于环形行波型超声马达定子振动有限元模型，详细分析研究了粘结层对超声马达定子振动特性的影响。
In this paper, the effect of adhesive on the vibration of the stator in ultrasonic motors was investigated in details.
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。
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.
在超声波电机理论研究和样机制作的基础上，开发了用于汽车车窗玻璃升降的行波型超声波电机。
In this paper series of traveling wave type ultrasonic motors that are fabricated by our group are introduced.
本文的研究主要侧重于设计制作出这两种回旋型压电行波超声波电机的实验样机并对其做性能实验。
The research object of the thesis is two types rotary piezoelectric ultrasonic motor that had been widely used in actual application of ultrasonic motors.
其次，针对行波型超声电机的正向和反向速度特性不一致的情况，提出一种正、反向速度平衡补偿算法，并用硬件实现了平衡补偿控制器。
Secondly, aiming at losing balance between the CW and CCW rotation speed, a balancing compensation algorithm is put forward, and which is implemented with hardware.
其次，针对行波型超声电机的正向和反向速度特性不一致的情况，提出一种正、反向速度平衡补偿算法，并用硬件实现了平衡补偿控制器。
Secondly, aiming at losing balance between the CW and CCW rotation speed, a balancing compensation algorithm is put forward, and which is implemented with hardware.
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