The nonlinear elastic hysteresis behaviour of granite is studied based on experimental results under constant amplitude cyclic loading. 通过花岗岩常幅循环加载试验,分析岩石的非线弹性滞后特性。
The martensitic transformation temperatures could be considerably increased by increasing Mn and decreasing Ga with fixed Ni content, while the temperature hysteresis becomes narrow and Curie temperature keeps constant. 保持Ni含量不变,增加Mn,降低Ga含量会使马氏体相变温度明显提高,同时相变滞后温区减小,居里温度基本不变。
The transformation hysteresis and reverse martensitic transformation temperatures decreased abruptly during the initial thermal cycling process and then remained constant with further thermal cycling times. 相变热滞、逆马氏体相变温度在热循环初期迅速降低,当热循环次数超过2次时则均保持不变;
The heating methods have evident effects on hysteresis. Hysteresis occurs under the condition of increasing the heat flux with constant pressure, while TD hysteresis ( Temperature Deviation) occurs when decreasing the heat flux. 研究发现不同的加热方式对沸腾滞后影响明显:当热通量逐渐增加时,出现滞后现象,而此后逐渐降低热通量,会产生TD滞后(TemperatureDeviation)。
We designed a relaxation oscillator with1MHZ frequency and94% duty cycle, which is composed of hysteresis comparator and charge and discharge circuit with constant current. 振荡器采用由迟滞比较器和恒流源充放电电路组成的张弛振荡器(设计频率为1MHZ,占空比为94%)。
In this paper a novel hysteresis current control method based on quasi optimized space voltage vectors for Active Power Filters ( APF) with constant switching frequency is proposed. 提出了一种基于优化电压矢量的有源滤波器定频滞环电流控制新方法。
While during the linear creep stage, the stress/ strain hysteresis loop width, area and dislocation density remain constant. 在冰的线性蠕变阶段,滞弹性试验所形成的应力/应变滞后环的宽度、面积和位错密度保持不变。
Based on some simplified assumptions the equation for thermal hysteresis is introduced and a formula is thereby derived for calculating the time constant. 按一定的简化假设,建立了百叶箱热滞方程,井导出了百叶箱热滞系数的计算公式。
After comparing the hysteresis current control and PWM control with constant frequency, the author proposed the PWM control with constant frequency. 作者分析比较了目前常用的电流模拟滞环PWM控制和开关频率固定的PWM电流控制策略,采用了开关频率固定的PWM电流环的数字化控制。
At present, the demand of middle and small synchronous brushless motors has a tendency to increase, and hysteresis motor has win the good graces of the equipments that requirement precise speed and constant starting torque during working. 目前,对中小型无刷同步电机的需求呈增长趋势,而其中的磁滞电动机在那些要求精确转速及恒定起动转矩的设备中一直受到特别的青眯。
It is found that higher La content lead to slime hysteresis loops, and decline the dielectric constant of the thick film. La的掺杂使得厚膜的电滞回线变得细斜,同时也降低了厚膜的介电常数。