查询词典 Ac

A nerve net controller have been designed on the basis of the hardware design of the AC servo system and system model. The controller include two forward nerve net with three layers . One is designed to identify the AC servo system model and another is to control. The controller use special learning algorithm which to control system at the same time and improve its constringency pace through introducing new MFBP algorithm. The intelligent control algorithmic is programmed using C++ language after the controller have been designed .

在该交流伺服系统硬件设计和系统数学建模的基础上，设计了神经网络自适应控制器，这个控制器包括两个三层的前馈神经网络，一个神经网络用于非线性系统的辨识，另一个神经网络作为控制器，此控制器采取边学习边控制的工作方式，并采用一种新型的MFBP算法实现了控制算法的快速性，在控制器设计完成的基础上，利用C++语言具体实现智能控制算法的编写。

The AC-DC-AC voltage source inverter main circuit and TMS320LF2407 are selected to form high performance alternating current excitation system of ASG in this dissertation after detail schemes argumentation.

本论文在详细方案论证的基础上选择了交－直－交电压型主电路和数字信号处理器TMS320LF2407构成高性能的异步化同步发电机交流励磁系统。

Results Average neurobiotin concentration in the coupled ON cone bipolar cells was lower than that in the coupled AⅡ amacrine cells.

相对于AⅡ-AC 和ON-CB间可能的异源型缝隙连接，NB较易通过AⅡ-AC间的同源型缝隙连接。

The DC and AC attenuator circuits provide ranging for the AC and DC functions.

直流和交流衰减器电路提供直流和交流功能的量程切换。

The bulblets enlargement can not be affected significantly by AC, but the quality of bulblets can be enhanced in the medium with appropriate concentration of AC. Medium with higher concentration sucrose can promote bulblet enlargement but inhibit bulblet formation.

L-1多效唑有利于子球再分化；活性炭对子球增大无明显影响，但适当浓度的活性炭能提高培养子球的品质；高浓度蔗糖能促进子球增大，但对子球再分化有抑制影响。

On the basis of a general ac drive, the second method doesn't require additional sensors. According to the torque command and the speed performance during the initial state of an ac drive or using a mode selection, the rotor time constant is tuned and identified.

在不增加额外的感测器，建立在一般伺服驱动器下；第二种方法在驱动器起动时或利用模式的选择，根据给予的扭矩命令和所得速度响应关系而判断调整得适当之时间常数。

The high-voltage high-power multilevel converter and AC motors drive techniques are summarized compendiously for domestic and overseas studies in the prolegomenon of this dissertation. The evolution and research status of multilevel converter topologies are analyzed, the development of AC variable speed techniques and the characteristic of DTC are discussed, also, the aim and significance for the research are demonstrated. In this dissertation, SVPWM pattern and implement method have been addressed comprehensively for three-level NPC inverter.

本文绪论部分针对国内外高压大容量多电平变换技术和交流传动控制技术作了简要综述，着重分析了多电平拓扑结构的发展和研究现状，讨论了交流调速的发展和直接转矩控制技术的特点，指出本文选题的目的和意义。

We use a 1/2 Hp TECO ac induction motor to complete experiment. Simulation and experimental results are consistence, it shows the accuracy of simplified model. The researchful results can become prototype machine of universal ac induction motor drive.

实验是以一颗1/2Hp东元鼠笼式交流感应马达来进行，实验与模拟结果具有相当的一致性，表示模型建立的正确性；研究结果显示其研制的系统具有未来泛用型交流感应马达驱动器的雏型。

AC-DC-AC dirve technique. due to the obvious advantages of its application in locomotives andmotor coach,has been widely used in the railways all over the world since 1970s. This has become a tendency.

交－直－交传动技术应用于机车动车具有明显的优点，70年代以来被世界各国铁路广泛采用，已形成一种趋势。

In this research, we report the development and experimental results of a single cell electroporation lab chip via the integration of dielectrophoresis manipulation and AC electrokinetic pump. Both dielectrophoresis force and AC electrokinetics pump are incorporated in this micro-chip for the target of single cell electroporation.

在这篇论文研究中，我们设计一利用介电泳力(Dielectrophoresis， DEP)达到细胞操控并且整合交流电动式微帮浦之微生医实验室晶片，提供单一细胞电穿透的生医应用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。