Euler method and Runge-Kutta method for ordinary differential equations of first order

龙格库塔法电机启动过程的暂态分析，电机内角接时，只有c相接入电源-Runge-Kutta method the motor to start the process of transient analysis, motor angles then, only c relative to access the power

DSP程序导航解算中使用二阶龙格库塔法更新四元数-The second-order Runge-Kutta method is used to update the quaternion in DSP program navigation solution