查询词典 loading inductance

The design mains design about the loading-machine department of continuous-type caterpillar band coal-loading machine, the loading department uses the spider loading, the transportation system uses the scraper conveyer, the loading department and the department of transportation uses in common a group of oil motor to actuate, to take the place of the reduction gear, which makes the machine structure to be more compact and the revolution to be more coordinated, reduced the breakdown.

本设计是对连续式履带装煤机的装运部进行设计，装载部采用的是星轮装载，运输系统采用刮板输送机，装载部和运输部共用一组液压马达驱动，取消装载减速器，使机器结构更加紧凑，运转更加协调，减少了故障。

The converter can be improved just by exchanging the position of the resonant inductance and the transformer such that the transformer is connected with the lagging leg. The improved converter has several advantages over its counterpart, e.g., the clamping diodes conduct only once in a switching period, and the resonant inductance current is smaller in zero state, leading to a higher efficiency and reduced duty cycle loss. The operation principle of the improved converter and the comparison with the original converter are analyzed in this paper. The effect of the blocking capacitor in series with the transformer or resonant inductance is discussed, and a best scheme is determined.The improved converter is adopted to design the DC/DC converter of secondary power supply in HVDC power system.

本文将谐振电感和变压器交换位置，使变压器与滞后桥臂相连，这样箝位二极管在一个开关周期中只导通一次，同时零状态时谐振电感电流较小，有利于提高变换效率和减小占空比丢失，本文分析改进后变换器的工作原理，并与改进前的变换器进行对比，讨论隔直电容在不同位置对变换器工作的影响，确定一种最佳工程方案。

Equivalent inductance: the single self-inductance corresponding to the series or parallel combination of multiple inductors including the effect of their mutual inductance.

一个结论是：电感和环路的形状有很大关系；减小电感的有效方法之一就是在参考平面上方布线，这样，环路的面积就是"走线的长度×介质厚度"。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

It is presented that the equivalent circuit and formulae for calculating inductance parameters (self inductance and mutual inductance) of shunt reactor with auxiliary winding system in the paper.

提出带抽能线圈并联铁心电抗器的等效电路和电感参数设计公式，通过对这种特殊并联电抗器三维非线性磁场的有限元分析，准确地计算出电抗器的电感参数以及抽能线圈空载和负载情况下电抗器的伏安特性曲线。

The general calculation method of equivalent self-inductance coefficient of non-mutual-inductance-coupling two-end self-inductance network has been studied.

探讨无互感耦合的任意二端自感网络等效自感系数的一般计算方法。

By calculating the equivalent loading,the process of strength degradation under random loading was transformed into a process under the deterministic loading,and the relationship between reliability andtimes of loading action was obtained.Besides,the time-dependent reliability models under multi-loadings were established by analyzing the relationship between action times of different loadings and time.

该模型通过计算当量载荷，将随机载荷作用下的强度退化过程等效为确定性载荷作用下的退化过程，得到零件可靠度与载荷作用次数的关系，在此基础上，通过分析不同载荷出现次数与时间的关系，得到多个载荷共同作用下零件可靠度随时间的变化规律。

Based on the analysis of finished auto's loading/unloading process of AnJi-TNT Logistics, propose the maximum transportation capacity optimization of every Car-carrier loading with different goods-cars. Construct the scheme database of optimization for Car-carriers'loading in SQL-server 2000 database software. The optimization toward loading orders in customization is resolved with maximum transportation's capacity algorithm and matching scale method with Visual Basic background.

本文结合安吉天地汽车物流有限公司整车物流调度系统的配载流程进行分析，通过整数规划计算出每辆轿运车针对不同商品车的最大运能配载方案，在SQL-Server数据库平台下，对这些最大运能配载方案按一定规则保存并进行数据库的管理，最后利用事例推理在Visual Basic开发环境下提供面向客户混装订单的轿运车配载方案优化的解决方案，并进行了实例验证。

Finite element software ANSYS was employed to investigate the mechanical response of asphalt pavement structure under the axisymmetrical dynamic loading,and different loading period,loading amplitude and loading form were discussed in detail.

运用有限元程序ANSYS，采用轴对称模型，求出了沥青路面在动荷载作用下的力学响应，并针对不同的荷载作用周期、荷载幅值以及不同的荷载作用形式进行了详细的分析与讨论。

In Chapter Four, the surface fracture was studied for a functionally graded plate with a semi-elliptical surface crack under state thermal loading, and studied the influence of crack sizes, aspect ratios and material property on the stress intensity factors along a crack-front under two types thermal loading: calefactive state thermal loading and descent state thermal loading.

第四章研究了含有半椭圆表面裂纹的功能梯度材料板条在稳态温度热载荷作用下的裂纹问题分析，着重考虑了升温载荷及降温载荷作用下应力强度因子在裂纹前沿的分布及材料梯度及裂纹与板的几何尺寸对应力强度因子的影响。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。