| 1. | New generation method of pencil drawing using usm sharpening
锐化生成铅笔画的新方法 |
| 2. | Usm unlisted securities market
为挂牌上市证券市场 |
| 3. | Another negative attribute of the canon ef 180mm f / 3 . 5 l usm macro lens is its slow focus speed
另外一个180的弱点是它有极其慢的对焦速度。 |
| 4. | A new kind of driving circuit is designed , it realizes driving and frequency tracking of usm
本文研究并设计了一种新型的驱动电路,用以实现超声波电机的驱动和频率的自动跟踪。 |
| 5. | A 180mm lens is getting long for portraits and the canon ef 180mm f / 3 . 5 l usm macro lens ' slow focusing might have an impact here as well
而180拍人像则显得略长了一些，同时180缓慢的对焦速度也不很适合人像拍摄。 |
| 6. | This system is implemented on a dsp because the dsp is accuracy and efficient . on basis of referring and analyzing a large quantity of literatures , the following work has been carried out
本文在阅读和分析了大量国内外有关参考文献的基础上,做了以下研究工作:介绍了bp神经网络在usm速度控制系统中的应用。 |
| 7. | In tins paper , a new type of standing - wave linear usm with square - ring vibrator was presented , which had two contact surfaces and a support structure with four flexure hinges for the power output
摘要利用有限元分析软件对方环形直线驻波超声波电动机的振子进行了动态设计，提出了一种环梁式双接触面的振子结构，该振子采用柔性铰链与支撑结构连接，实现力的输出。 |
| 8. | According to tusm ' s characteristic and it ' s driving theory , a kind of usm ' s driver and control strategy is designed in this paper , which is based on digital singal processor ( dsp ) . the main work accomplished is summarized as follows
设计了两相混和式电动机的控制软件，实现了电机转速的开环控制，并同时给出了实验结果，并对实验结果进行了分析，验证了上述仿真结果的正确性。 |
| 9. | Being a sort of new principle micromotor in the fronitier of science , the ultrasonic motor ( usm ) is developed at recently twenty years . utilizing the stator surface particle elliptical motion excited by piezoceeramics , the usm is drived by friction force between the stator and rotor
本文以这一新型电动机为研究对象，对其运行特性和控制策略进行研究，是有较重要的理论和实际意义的。 |
