“这是一个变距螺旋桨，就像在自行车上安齿轮一样，”兰德说。
"It's a variable-pitch propeller, which is like having gears on a bike," Land says.
此外，明阳的自主制造和生产齿轮箱，发电机，变桨距控制系统的检测设施，是按计划进行的。
In addition, Ming Yang's self-manufacturing and testing facilities to produce gearbox, generator and pitch control system are progressing as planned.
介绍了电动变桨距系统的结构，阐述了变桨距系统在运行中因变桨轴承故障而存在的问题。
Introduced electric pitch from the structure of system and elaborated electric pitch from system in the movement because of electric pitch system bearings failure but existent problem.
冲压空气涡轮流场数值研究主要目的是模拟在实际高空加油工作状态下涡轮变桨距气动特性。
The aim of numerical experiment of ram air turbines is mainly to simulating its adjustable pitch aerodynamic characteristic on the actual flight refuel conditions.
本文分别分析了双馈发电机和变桨距系统的数学模型。
In this paper, the mathematical model of DFIG and variable pitch system is established.
利用实验装置验证变桨距机构的合理性。
The rationality of pitch-regulated mechanism was demonstrated by experiments.
介绍一种用来控制变桨距大型风力发电机组的模糊控制器。
A fuzzy controller to be used to control varying oar distance large scaled wind power generator is introduced.
本文针对风力发电变桨距传动及控制系统进行了研究。
This paper studies virtual design of pitch Angle transmission and control system of wind turbine.
变桨距是通过改变风力机叶片桨距角来改变风力机的转速，从而调整发电机输出功率。
Pitch angle control system can change pitch, accordingly regulate the rotational speed and output power by adjusting blade incidence of wind-driven device.
通过建立理想气动模型的计算，尽可能真实地确定1.5MW的双馈异步发电机组的变桨距设备的主要参数。
Study on the ideal model of blade, we can work out the primary parameters of 1.5MW wind turbine's pitch control system.
首先根据电控旋翼的刚体桨叶变距运动方程，推导了襟翼操纵量与桨叶桨距的显式关系式。
First, relationship between flap input and blade pitch was deduced based on the pitch kinetic equation of rigid blade.
介绍了带有转子电流控制器(RCC)的变桨距调节异步风力发电机系统的基本原理及其控制策略。
Fundamental principles and control strategies of pitch-controlled wind induction generator system with rotor current controller (RCC) were presented.
应用鲁棒调节器理论，为偏航时大型变桨距风力机组设计了一个运行于额定风速以上的控制器。
A controller is designed using the robust regulator theory for a large pitch regula ted wind turbine while yawing.
通过风力机空气动力学分析和模型研究，为变桨距控制提供了理论基础。
Based on the research of wind turbine aerodynamics characteristics, a model was established and the theoretical foundation of pitch control was built.
针对变速变距机组的转矩控制、桨距控制以及整机的协调控制进行了研究。
The torque control, pitch control and general wind turbine coordinate control strategy of variable speed adjustable pitch wind turbine were researched.
本文以变桨距控制系统中控制器的研究为切入点，对控制系统展开了研究。
In this paper, the research for the control system begin with studying controller of variable pitch control system.
首先对风力机空气动力学和变桨距控制过程进行了探讨，为系统的设计及控制策略的研究提供理论基础。
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.
这为后面的变桨距硬件和软件设计提供了理论依据。
This provides a theoretical basis for latter variable pitch design of hardware and software.
变桨距系统的好坏很大程度地影响风力发电机组的效率、安全运行与稳定运行。
The good or bad of variable pitch system affects wind generating set efficiency, safe operation and stable operation to a large extent.
针对兆瓦级水平轴变桨距风力发电机的控制要求，设计了变桨距液压控制系统。
According to the controlling requirement of megawatt wind driven generator with variable propeller pitch of horizon axis, the hydraulic control system of a variable propeller pitch is designed.
随着风力发电机组单机容量的大型化，变桨距控制风力发电技术因其高效性和实用性正受到越来越多的重视。
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.
本文首先建立了PID变桨距控制系统和常规的模糊变桨距控制系统。
First, traditional PID variable variable pitch control system and conventional fuzzy variable pitch control system are established.
由沈阳工业大学研制的MW级变速恒频风电机组属于变桨距型机组，它在额定风速以上进行变桨距调功控制。
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.
建立了变速变桨距风力发电机组的简化模型。
A simplified model of variable speed variable pitch wind turbine is established.
在此试验台上对提出的分段PID变桨距控制算法以及变速恒频和变桨距切换设定的控制策略进行试验研究。
Then the piecewise PID pitch-controlled algorithm and the control strategy for transition between variable speed constant frequency (VSCF) and pitch control were used in the test-bed.
特别是随着风机容量和体积不断增大，变桨距控制对控制载荷会有很大的帮助。
Although pitch control is used primarily to limit power in high winds, it also has a significant effect on various loads.
本发明属于直升机桨毂设计技术，涉及一种用于直升机金属轴承铰接式桨毂的一种鱼钩式变距摇臂。
The invention belongs to a design technology of a helicopter propeller hub and relates to a fishhook-type distance-variable rocker arm used for a helicopter metal bearing articulated propeller hub.
本发明属于直升机桨毂设计技术，涉及一种用于直升机金属轴承铰接式桨毂的一种鱼钩式变距摇臂。
The invention belongs to a design technology of a helicopter propeller hub and relates to a fishhook-type distance-variable rocker arm used for a helicopter metal bearing articulated propeller hub.
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