开关函数 meaning in English
switching function
Examples
- Based on this , and by dint of switched network theory , we accessed a way to get electrical contacts ? switched functions of load elements
在此基础上,利用开关网络的理论,较好的获得了负载元件的电气联系? ?开关函数。 - Based on the traditional control on pwm rectifier , space vector pwm predictive current controller is presented using the switching function model
在传统的pwm整流控制的基础上，论文利用开关函数建模法，提出了基于预测电流的pwm电压空间矢量控制方法。 - In order to describe the hupqc system theoretically , the mathematical model of hupqc is derived by the concepts of space coordinate transform and the switch function
为了对电能质量综合调节系统在理论上进行描述，作者应用空间坐标系变换和开关函数的概念，建立了系统的数学模型。 - Simulation result shows that it is effective . afterwards the paper brings forward a mathematical model of upfc based on switch function . then it designs a control scheme relying on fuzzy self - adaptive pid control strategy in d and q - axis
论文利用开关函数建模法建立了统一潮流控制器的数学模型，推导了统一潮流控制器在d - q轴的控制方案，并采用模糊自适应pid控制方案实现对upfc的控制。 - There are five parts are as follows : in part one , the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration , then the low frequency oscillation of the system is simulated according to the model . next , from the view point of energy conversion of the inverter - induction system , a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not
首先引入开关函数概念，建立了正弦脉宽调制( spwm )逆变器供电异步电动机，考虑主磁路饱和时的变频调速系统整体数学模型，模拟系统的低频振荡；其次从逆变器-异步电动机系统能量转换角度出发，提出通过检测逆变器输入电流中负电流的间隔时间是否大于1 / f _ c ( f _ c为逆变器载波频率)来判定系统是否出现低频振荡；最后的实验结果验证了系统低频振荡建模和判据的实用性和正确性。