距角

用DSP实现步进电机的步距角细分

Step motor subdivision designed by using DSP chips

步进电机PWM式相矢量合成分数步距角控制

Fractional Step Angle Control of Step motor Achieved by PWM Phase Vector Composition

SVC与桨距角控制改善异步机风电场暂态电压稳定性

Enhancement of Transient Voltage Stability of Induction Generator Based Wind Farm by SVC and Pitch Control

本文根据步进电视的结构与控制原理，提出一种PWM式相矢量合成分数步距角控制方案。

Based on the construction pattern and the control principle of stepmotor , fractional step angle control of stepmotor is achieved by PWM Phase Vector Cornposition .

在它到达最大距角（elongation）时，它将看上去大概为半明亮、被太阳照明的部分将在持续日子里减少。

By the time it arrives at its greatest elongation , it will appear roughly half-illuminated and the amount of its surface illuminated by the Sun will continue to decrease in the days to come .

建立了基于RBF神经网络的桨距角预测模型，并设计了神经网络模型控制器，利用神经网络模型控制器对风力机系统的输出功率进行了预测控制。

Based on RBF neural network , the prediction model of the pitch angle is established , and the neural network controller is designed . Besides , this controller is applied on the wind turbine power control .

提出了结合SVC、STATCOM等动态无功补偿装置与用于暂态稳定控制的桨距角控制的综合控制用于改善基于异步机的恒速风电机组的暂态电压稳定性。

The integrated control combined dynamic reactive power compensation with pitch control used for transient stability control is implemented to improve the transient voltage stability of IG based wind turbine .

为解决这一问题，本文将传统PID与模糊控制相结合设计模糊自适应PID控制器，通过仿真验证得到所设计的控制器能够使桨距角具有随动性，而且使系统具有较强的适应性和鲁棒性。

In order to solve this problem , this paper designs fuzzy adaptive PID controller , combined with the traditional PID and fuzzy control . Through simulation , it gets that the designed controller can make the pitch has a follower , and the system has strong adaptability and robustness .

采用SVC及风电机组桨距角控制能够改善异步机风电场的暂态电压稳定性，确保风电机组连续运行及电网安全稳定。

Finally , it is concluded that the adoption of the SVC and pitch control enhances the transient voltage stability of induction generator based wind farm , ensures the continuous operation of wind turbines and the security and stability of the power network .

计算机控制的步距角精度测试系统研制

Design of an Step Angle Error Testing System Controlled by Computer

同时它也是一种可变步距角的新型步进电动机系统，文[3]介绍了改变步距角的原理。

It is also a new stepmotor system with variable step angle .

步进电机步距角的软件细分法

A Software Method of Suballocation of Stepping Motor Stride Angle

单通道步距角微机测试系统

A Single-path Measuring System of Stepping Angle Used Microcomputer

步距角任意细分的步进电动机电流波形的讨论

Discussion of Current Waveform for Stepping Motors with Adjustable Subdivision of Stepping Angle

步进电机步距角细分单片机控制系统设计与研究

Research on the Chip Microprocessors System for Controlling Stepper Angle Fraction of the Stepper Motor

在高于额定风速时，如何控制桨距角的变化，从而保持输出功率恒定的方法。

At high wind speed , pitch angle is adjusted to keep rated output power .

然后进行科尔曼反变换将这些桨距角信号转换为旋转坐标系中的独立变桨距信号。

And then these outputs are transformed back to the individual pitch signals of rotating coordinate .

系统采用有限状态机设计脉冲分配并利用脉宽调制方法实现步距角的细分控制。

Pulse distributing is designed by finite state machine and the PWM realizes step angles subdivided control .

在电机控制中，存在步距角较大及低速震动等问题，有必要对其进行步距角细分。

But , in control there are still such problems as bigger stepper angles , and low-speed vibration .

提出了一种改进的桨距角控制方案&将系统频率偏差信号引入桨距角控制系统。

An improved pitch control scheme is presented by introducing a frequency deviation signal into the control system .

在此基础上，利用非线性动态逆方法，设计了系统在额定风速以上工作时的桨距角控制律。

The control strategies and algorithms for variable speed pitch controlled wind turbines were presented in this pa-per .

对风电机组的空气动力学模型、机械传动系统的轴系模型及桨距角控制模型进行了建模分析；

The aerodynamic model , shaft system model and pitch control model of the wind turbines model are presented ;

在高于额定风速时，通过变桨距控制器调节桨距角，系统能较好地将功率限制在额定值附近；

With the action of fuzzyPID-PID dual-mode controller , system can keep the rated output power above rated wind speed ;

该控制电路能够使步进电机的步距角均匀细分，并能提高步进电机的运行平稳性。

This method can have the step angle subdivided evenly , and can improve the smooth operation of the stepper motor .

风力发电机组数学模型分别对风力机、轴系、桨距角控制、异步发电机进行了建模，抽水蓄能系统数学模型则分别针对其发电工况和抽水工况进行了建模。

The wind turbine , shaft , pitch angle control and asynchronous generator are modeled respectively in the wind power model .

但是变桨距系统具有多变量、非线性等特点，就使得对桨距角的控制变得比较困难。

But the pitch system is multivariable and nonlinear , which makes the control of blade pitch angle become more difficult .

提出了风力机的桨距角控制策略和发电机的转速控制策略。

In accordance with the variation of wind speed , strategies for pitch angle control and rotational speed control were developed .

研究了桨尖马赫数、机翼桨距角及机翼剖面的不同外形对旋翼气动特性的影响。

The effects of wingtip 's speed 、 angle of attack and the airfoil shape on wing 's aerodynamic characteristics are presented .

脉冲控制部分采用了400细分的微步运行方式使步距角仅为0.27′，提高了步进电机的控制精度；

In the part of pulse controlling , the step size is 0.27 ′ through micro step running style of 400 dividing .

具有线性扭转桨叶的变距角，其中含有自动倾斜器和挥午调节的作用；

The feathering angle of the rotor blades with linear torsion , including the action of the swash plate and flapping adjustment ;