但是对转子磁链估计的精度要求很高。
提出了一种基于逆变器开关占空比的定子磁链估计方法。
This paper presents a stator flux estimation method based on the duty cycles of inverter switching.
文中提出了一种基于定子电流矢量定向的转子磁链估计器。
This paper proposes a rotor flux estimator based on stator current vector orientation.
然而，传统的磁链估计器的精度会因定子或转子电阻的摄动而降低。
However, the accuracy of traditional flux estimators will be degraded due to perturbations of stator or rotor resistance.
文中提出一种基于转子位置的面贴式永磁同步电动机的定子磁链估计方法。
A novel stator flux estimator based on rotor position is presented, which is applied for direct torque controlled(DTC)surface mounted permanent magnet synchronous motor(PMSM)drives.
在磁场定向控制的异步电机驱动系统中，精确的磁链估计是提高系统性能的关键。
In an induction motor drive system with field oriented control, the key to improve its performances is accurate flux estimate.
在控制算法上，采用了磁链估计算法实现电机无传感器控制、三段式低速启动策略启动电机。
On the control algorithm, using flux estimation algorithm for motor speed sensorless control, low speed startup strategy of three stage for motor start.
在此基础上，提出定子电阻整定的定子磁链估计方法，并建立一个定子磁场定向直接转矩控制的仿真系统。
On the basis of the scheme, a stator flux estimate technique based on stator resistance compensation is also presented, and the simulation system of the direct torque control project is established.
文章分析了永磁同步电机直接转矩控制系统的电压空间矢量选择和磁链估计模型，并提出了系统的实现方案。
This paper analogy the selection of voltage space vector and the flux linkage estimate model of the direct torque control system of PMSM, and the realizing project of the system.
仿真结果表明EKF可在整个调速范围内进行高精度的转速和磁链估计，控制系统具有优良的动态和稳态性能。
Simulation results show that the EKF can give the accurate estimation of rotor speed and flux in all drive range, and the proposed control scheme processes the perfect dynamic and static performance.
异步电机矢量控制的关键问题在于精确地估计转子磁链。
In vector control of induction motor, the key problem is to estimate rotor flux accurately.
系统采用具有自适应补偿的电压模型估算定子磁链，PI自适应法估计转速。
The stator flux is estimated by adaptive compensated voltage model, and the speed is estimated with PI adaptive method.
异步电机无速度传感器矢量控制系统需解决两个问题：转速的估计和转子磁链的观测。
Two problems must be solved in the speed sensorless Field Oriented Control of induction motor drive: the speed estimation and rotor flux observation.
仿真结果表明，这两种模型能够快速准确地估计在负载变化条件下感应电机的转子磁链。
The simulation results show that the models can instantaneously and accurately estimate the rotor flux magnitude of an induction motor under a variety of load conditions.
提出一种估计异步电机转子速度和转子磁链的新型降阶推广卡尔曼滤波器算法，建立了基于此算法的异步电机无速度传感器矢量控制系统。
A speed sensorless vector control system of induction motor with estimated rotor speed and rotor flux using a new reduced order extended Kalman filter is proposed.
此方案以估计出的位置角为反馈量，采用闭环双积分结构，分别估计了定子磁链的幅值和相位。
The amplitude and phase is estimated respectively through a double integrator close-loop, in stead of vector of flux, with angular and speed as feedback.
磁链自适应观测器中的非线性修正项除考虑转速跟踪误差的影响外，还考虑了转子电阻估计误差和磁链观测误差的影响。
In rotor flux adaptive observers, the influence of flux amplitude tracking error estimate and rotor resistance estimate error in addition to speed tracking error is considered.
当电机转速的估计值收敛于转速的真实值时，观测的转子磁链也收敛于其真实值，可将其用于直接磁场定向控制中。
When the estimated speed converges to the actual rotor speed, the rotor flux observed converges to its true value, which can be used in direct field orientation control (DFOC).
为了实现高性能异步电动机矢量控制，必需解决转子磁链的准确估计。
In order to achieve a high performance of vector control for induction motor, the rotor flux must be estimated accurately.
针对直接矢量控制感应电机感应电机调速系统 ，设计和训练一个三层前馈神经网络以估计系统的实际转子磁链和单位矢量 ，并由此构成系统的闭环控制。
This paper designed and trained a three-layer fee dforward neural network to estimate the actual rotor flux and unit vector ford irect vector controlled induction motor speed drive.
转子磁链观测器以两个电流观测器和速度观测器的输出作为输入，估计转速反馈到第二个电流观测器和转子磁链观测器。
The rotor speed observer takes the outputs from the second current observer and the rotor flux observer as its inputs and generates the estimated rotor speed as the output.
转子磁链观测器以两个电流观测器和速度观测器的输出作为输入，估计转速反馈到第二个电流观测器和转子磁链观测器。
The rotor speed observer takes the outputs from the second current observer and the rotor flux observer as its inputs and generates the estimated rotor speed as the output.
应用推荐