调速

Flow motor double closed loop speed regulation systems is widely applied in the project, in order to make the system has a good dynamic performance of system design must be.

直流电动机双闭环调速系统在工程中应用广泛，为了使系统具有良好的动态性能必须对系统进行设计。

Rigid PVC pipe production line is mainly used in the manufacture of the plastic PVC pipes with various tube diameters and wall thickness in the aspects such as the agricultural and nonstructural plumbing, cable laying etc. Thin set is composed of the conical twin-screw extruder, vacuum forming table , dragger, cutter, stirring up rack etc. The screws extruder and the extractor adopt the imported AC frequency employ the superior goods. The prime mover has the traction modes such as to claw, three-claw and so on. It may choose the saw blade cutting type or the planet cutting type. It is additionally attached with measuring apparatus and the intensifying device. The unit is of the reliable performance and high production efficiency. This company may allocate the special installation for the manufacture of the inner wall spiral coil and core ply blister tube set according to the clients requirements.

硬质PVC 塑胶管材出产线主要有阿谁与出产农用给排水、建筑给排水、线缆铺设等方面的各类管径、壁厚的塑胶PVC管材，该机组由锥形双螺杆挤出机、真空定形台、牵引机、翻料架等构成螺杆挤出机及牵引机采用进***流变频调速设置，真空泵以及牵引机电均采用优质产品牵引有二爪、三爪、四爪、六爪等牵引体式格局可选用锯片或者行星切割形式，另可计长及增厚装置，机组机能可靠，出产效益高，本公司可更具客户的要求，配备布置专用装置出产螺旋消音管以及芯层发泡管机组

Adjustable frequency driver is one of the most useful devices of industrial drive engineering.

变频器是工业调速传动领域中应用很广泛的设备之一。

The experimental results show that the system has good dynamic performance and control effect.

实验结果表明，该调速系统具有良好的动态性能和控制效果。

This thesis designed a switch reluctance dynamo speed control system.

本论文设计了一个开关磁阻电机调速系统。

Electric machinery and electrotechnology ; Adjustable speed with variable frequency ; Self-adaptive optimal design ; Induction motor

清华大学电机工程与应用电子技术系；清华大学电机工程与应用电子技术系；清华大学电机工程与应用电子技术系；江西电机有限责任公司北京 100084；北京 100084；北京 100084；江西南昌 330002电机电工；变频调速；自适应优化设计；异步电机

According to theoretical analysis and experiments on the throttle control system,the quantitative relationship among the speed of executive element , the flow area of the throttle and the load is determined.

文摘：本文通过对进油路节流调速系统的理论分析与试验研究，阐明了执行元件的运行速度与节流阀的通流面积以及负载之间的定量关系。

According to theoretical analysis and experiments on the throttle cothel system,the quantitative relationship among the speed of executive element, the flow area of the throttle and the load is determined.

本文通过对进油路节流调速系统的理论分析与试验研究，阐明了执行元件的运行速度与节流阀的通流面积以及负载之间的定量关系。

Make up of a new accessorial shaft elevator electrical control system .

文中阐述了凡口新副井提升机电控系统的结构和功能，对信号系统、多功能数字深度指示系统、主控制系统、晶闸管直流调速系统、计算机监控系统进行了详细的分析和论述，重点阐述新一代国产提升机电控系统的特点、优点。

The frequency band energy method based on the wavelet packets analysis is used for the feature extraction of signal.

同时，运用基于改进的小波包的频带能量法提取变频调速系统的故障特征，分析了小波包分解层次对特征量提取的影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。