中文说明：
在matlab/simulink下用S-function实现了用递推最小二乘法的系统在线辨识，对象是开关磁阻电动机，在转矩和转速可测的前提下，得出转动惯量，摩擦系数和负载转矩的在线辨识。
English Description：
In Matlab / Simulink, S-function is used to realize the online identification of the system with recursive least square method. The object is switched reluctance motor. Under the premise of measurable torque and speed, the online identification of moment of inertia, friction coefficient and load torque is obtained.