在直接转矩控制理论基础上,推导出一种基于定子磁链矢量增量来确定定子参考电压矢量的新型无速度传感器直接转矩控制方案。
This paper obtains a new speed-sensorless direct torque control scheme for induction motor based on calculating the stator flux vector increment to determine the stator reference voltage.
文中推导出表征电阻器,电容器、电感器和四种非线性受控源增量模型的方框图。
The block diagrams which represent the incremental models of resistors, capacitors, inductors and four types of nonlinear controlled sources are derived.
本文在控制灵敏度矩阵的基础上,导出增量形控制方程组,然后利用其伪逆矩阵迅速求出方程组的解。
On the basis of the sensitive matrix of control, the control equation in incremental form is derived. The solution of this equation is quickly found by means of the pseudo-inverse matrix technique.
在这一理论框架下,增量的应力应变关系可以从所构造的能量函数中推导出来。
Under this framework, the stress-strain relations are derived from a pseudo-elastic strain-energy density.
文章从含时薛定谔波动方程出发,结合物理问题中的实际条件,推导出了空间和时间增量必须满足的数值稳定性条件。
Based on Time-dependent Schroe dinger wave equation and physical problems, the stability conditions for the choice of increment parameters are deduced in this paper.
采用误差分析方法导出增量型自动厚度控制(agc)模型设定序列的差分方程。
A differential equation of giving series of incremental AGC (Automatic Gauge Control) model has been derived by the error analysis method.
还导出了用于非线性分析的样条函数线法增量方程;
The increment equations of the spline function method of lines are also given out for analyzing the nonlinear problem.
依据行波能量吸收方法推导出了锚杆受爆炸波冲击时所需张力增量计算公式。
Based on the basis of traveling wave energy absorption method, the formula of allow tension increment of anchorage cable under condition of the blast wave shock is derived.
其关键点是导出了求估算步长的一个简单公式,从而很容易的由已知节点坐标求出到下一节点的坐标增量。
The key point of this method is that a simple formula has been derived for estimating step length. Therefore it is easy to find the unknown node coordinate from known one.
基于有限单元法,推导出多自由度结构体系在地震作用下的增量形式的运动方程,建立了大跨度斜拉桥的地震激励模型。
The incremental motion equations of a M DOF structural system excitated by seismic waves are formulated based on FEM, and a seismic response model for cable stayed bridges are proposed.
深入探讨了单旋翼涵道风扇式无人直升机的动力学原理,结合其全量方程和线性化增量方程,推导出了其钟摆模态的数学表示。
Then the equation of helicopter pendulum is derived from the nonlinear differential equation and linear differential equation, with the principle of helicopter aerodynamics.
用增量分析方法推导出单位产品成本变动率分析模型。
Incremental analysis is employed to infer the analytical model of the change ratio of unitcost.
针对增量有限元求解用时过多的问题 ,采用形变理论并利用理想形变的假设 ,导出用于板料成形设计的一步法 。
Based on the assumption of ideal forming theory and plain stress, the FE equations for axisymetric multi-step deep drawing inverse simulation are formulated with linear membrane element and .
以电流上升率保护和电流增量保护为基础,提出了一种新型的DDL保护方法及整定原则,并推导出了完整的动作方程。
Based on the current-rising-rate protection and current increment protection, the principle of DDL protection as well as its action equation is presented.
以电流上升率保护和电流增量保护为基础,提出了一种新型的DDL保护方法及整定原则,并推导出了完整的动作方程。
Based on the current-rising-rate protection and current increment protection, the principle of DDL protection as well as its action equation is presented.
应用推荐