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• The horizontal anger has a variable pitch.

横向搅龙具有可变螺距

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• A simplified model of variable speed variable pitch wind turbine is established.

建立了变速桨距风力发电机组简化模型

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• CNC lathe; variable pitch screw; NC Program; on the cutting point; graphic method;

数控车；螺距螺杆NC程序图解

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• In this paper, the mathematical model of DFIG and variable pitch system is established.

本文分别分析馈发电机桨距系统的数学模型

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• This provides a theoretical basis for latter variable pitch design of hardware and software.

后面桨距硬件软件设计提供理论依据

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• In this paper, the research for the control system begin with studying controller of variable pitch control system.

本文控制系统控制器研究切入点，控制系统展开研究

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• It is difficult to machine the variable pitch of screw part on the CMC lathe without variable pitch cutting faction.

对于只具备普通螺纹切削功能数控车床，一般来说不能加工螺距的螺纹。

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• First, traditional PID variable variable pitch control system and conventional fuzzy variable pitch control system are established.

本文首先建立了PID控制系统常规模糊变桨距控制系统。

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• Therefore, to carry out research on the variable pitch control system of wind turbine and its drive system has important significance.

因此开展风力机变桨距控制系统及其驱动系统研究具有重要意义

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• Once the program is loaded, only a few parameters are given, the development drawings of variable pitch helical blade will be obtained.

程序一经调用只要给出几个相关的参数，即可绘出螺距螺旋展开

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• The good or bad of variable pitch system affects wind generating set efficiency, safe operation and stable operation to a large extent.

桨距系统好坏很大程度地影响风力发电机组的效率安全运行稳定运行。

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• With the theory of kinematics, the universal model of changed Angle and variable pitch spiral groove on any turning surface is researched.

本文应用运动学理论研究任意回转体外表面倾角导程螺旋线通用模型

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• Compression cancellous bone screw with both ends thread is a Variable pitch screw designed tO provide rigid 'fixation of cancellous bone fracture.

双端螺纹加压螺钉的特点两端螺纹具有不同螺距，无螺帽。

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• The pump having the Angle adjustable vane is called the variable pitch vane type, and having the non-adjustable vane is called the fixed vane type.

循环水泵可分为拥有叶片角度调节装置的可调叶片叶片不可调节固定叶片式。

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• Programming by the plane curve unwrapped from the helix curve and cutting layer by layer, we created the variable pitch screw on the 3.5 axis NC milling.

文章基于3.5数控铣床，利用螺旋线展开平面曲线编程分层切削，加工螺距螺纹

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• Special skill: assembly and commissioning of various fans, familiar with the assembly of hydraulic device, bearing housings and rotors of variable pitch axial flow fans.

擅长：种类风机装配调试工作，精通动调风机液压调节装置轴承转子叶轮装配、调试及故障排除。

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• In view of this, a variable pitch valve spring is designed to eliminate the axial shifting and radial drifting of the valve disk and improve the service life of the valve.

鉴于，笔者试图设计泵阀螺距弹簧消除纵向振谐窜动径向失稳漂移提高泵阀工作寿命。

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• First, wind turbine aerodynamics and variable pitch control process was discussed to provide theoretical studying basis for studying of the system design and control strategy.

首先风力空气动力学桨距控制过程进行了探讨，系统设计控制策略的研究提供理论基础

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• The paper analyses the structural characteristic and work principle of screw with variable pitch, designed machining technics, put forward a particular method of nc programming.

文中分析了异型截面供送螺距结构特点工作原理设计了加工工艺提出套加工该螺杆的独特数控编程方法

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• MW variable speed constant frequency wind turbine from shenyang university of technology is a variable pitch wind turbine, it can change pitch to adjust power above rated wind speed.

沈阳工业大学研制MW级变速风电机组属于距型机组，额定风速以上进行桨距控制。

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• This paper introduces a design method of variable pitch screw, This methed make use of multinomial, bring out the boundary conditions which the design need and the operating range of the methed.

本文介绍了一种螺距螺杆设计方法方法采用多项式，并提出了设计所需边界条件这种方法的使用范围

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• With the stand-alone wind turbine capacity of large-scale, variable pitch control, a kind of wind power generation technology, is being more and more attention for its efficiency and practicality.

随着风力发电机组单机容量大型化桨距控制风力发电技术高效性和实用性受到越来越多的重视

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• In order to meet the constant power control requirements of wind turbines, the wind turbine model was linearized at the operation points, thus variable pitch PID control of wind turbines is achieved.

为了满足风力发电机功率控制要求，对其模型运行工作点处进行了线性化处理，从而实现了风力发电机变桨距PID控制。

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• "It's a variable-pitch propeller, which is like having gears on a bike," Land says.

一个距螺旋桨，像在自行车齿轮一样，”兰德说。

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• Some cars have variable-ratio steering, which uses a rack-and-pinion gear set that has a different tooth pitch (number of teeth per inch) in the center than it has on the outside.

有些转向系角传动比是可变的，这种转向器采用齿轮齿条式，中间而不是外部，不同齿密度（齿数）。

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• So, variable structure control theory is used in Angle stabilization of roll, and model - following variable structure control theory is used in acceleration stabilization of pitch and yaw.

因此，本文采用结构控制理论设计倾斜角稳定系统，采用了模型跟踪变结构控制理论设计俯仰偏航通道加速度稳定回路。

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• The torque control, pitch control and general wind turbine coordinate control strategy of variable speed adjustable pitch wind turbine were researched.

针对变速机组转矩控制距控制以及整机的协调控制进行了研究。

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• The torque control, pitch control and general wind turbine coordinate control strategy of variable speed adjustable pitch wind turbine were researched.

针对变速机组转矩控制距控制以及整机的协调控制进行了研究。

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