two fredom degree

说明：  lm求解非线性方程组(Solving nonlinear equations by LM)

转子磁场定向矢量控制的PWM逆变器仿真模型(Simulation Model of PWM Inverter with Rotor Field Oriented Vector Control)

说明：  用MACCORMACK方法求解一维LAVAL管亚音速流动(solve one dimensional laval tube with the method in maccormack)

计量模型，garch，var，用于建立各类模型，评估，roc等等(Econometric models, garch, var, used to build various models, evaluations, roc, etc.)

对于非线性模型的跟踪预估问题，摒弃额对非线性函数进行线性化的做法，采用无迹变换处理均值和方差的非线性传递问题。(For the tracking and prediction problem of the nonlinear model, the linearization of the non-linear function is abandoned, and the traceless transformation is used to deal with the non-linear transfer of mean and variance.)

三相永磁同步电机的滞环电流控制仿真模型，控制瞬态电流输出。(Simulation Model of hysteresis current Control for Three-phase permanent Magnet synchronous Motor)

转子系统启动时的瞬态动力学分析，有限元分析(Transient Dynamics Analysis of Rotor System at Start-up)

机器人MATLAB m语言，实现关节机器人的运动学正解运算。算(Robot MATLAB M language, realize kinematic joint robot forward kinematics, inverse operation.)

说明：  voce非线性各向同性强化弹塑性本构子程序（ansys格式）(voce-Nonlinear-Isotropic Hardening usermat)

说明：  完成对四旋翼飞行器的数学建模，并在matlab矩阵实验室中进行仿真，进一步设计飞行控制系统。(Complete the mathematical modeling of quadrotor aircraft, and simulate in MATLAB matrix laboratory.)